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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Melanoma is the eighth most common cancer&#46; It accounts for approximately 5&#37; of all new cancer cases&#44; and incidence is rising steadily&#46;<a class="elsevierStyleCrossRefs" href="#bib0385"><span class="elsevierStyleSup">1&#44;2</span></a> The incidence of cutaneous melanoma in the Spanish population is 8&#46;7 cases per 100&#160;000 population&#46;<a class="elsevierStyleCrossRef" href="#bib0395"><span class="elsevierStyleSup">3</span></a> Survival rates for early-stage melanoma are higher than 95&#37;&#44; but prognosis worsens considerably for disseminated forms&#44; which have a 5-year-survival rate of less than 20&#37;&#46;<a class="elsevierStyleCrossRef" href="#bib0390"><span class="elsevierStyleSup">2</span></a> Chemotherapy is the most widely accepted treatment for advanced cutaneous melanoma&#44; but response rates are lower than 15&#37; and the impact on survival outcomes is minimal&#46;<a class="elsevierStyleCrossRef" href="#bib0400"><span class="elsevierStyleSup">4</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">The emergence of immunotherapy marked an important change in the search for alternative treatments&#46; The association between cancer cells and the immune system has been recognized for decades&#44; and cutaneous melanoma is probably one of the most immunogenic tumors that exist&#46; The interaction between the immune system and melanoma is dynamic&#44; however&#44; and tumor cells use various mechanisms to avoid recognition and destruction by the immune system&#44; favoring disease progression&#46;<a class="elsevierStyleCrossRef" href="#bib0405"><span class="elsevierStyleSup">5</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">Treatment strategies aimed at boosting the immune response through vaccines and biochemotherapy were attempted for several years&#44; but the results were disappointing&#46;<a class="elsevierStyleCrossRefs" href="#bib0410"><span class="elsevierStyleSup">6&#44;7</span></a> A more recent approach&#44; however&#44; that of using monoclonal antibodies directed against immune checkpoint inhibitors&#44; has been met with enthusiasm&#46;<a class="elsevierStyleCrossRef" href="#bib0420"><span class="elsevierStyleSup">8</span></a></p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Evidence Supporting the Immune Response in Melanoma</span><p id="par0020" class="elsevierStylePara elsevierViewall">In contrast to other cancers&#44; numerous findings&#44; both clinical and histological&#44; support the involvement of the immune system in the fight against melanoma&#46;<a class="elsevierStyleCrossRef" href="#bib0425"><span class="elsevierStyleSup">9</span></a></p><p id="par0025" class="elsevierStylePara elsevierViewall">An inflammatory infiltrate within and around the tumor&#44; sometimes accompanied by tumor regression&#44; is observed in the majority of melanomas&#46; Signs of regression are observed in up to 35&#37; of cases&#44; and tumor regression is actually 6 times more common in melanoma than in other types of tumors&#46;<a class="elsevierStyleCrossRef" href="#bib0430"><span class="elsevierStyleSup">10</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">Another more recently described finding is a correlation between the density of high endothelial venules and lymphocytic infiltration in association with greater tumor regression&#46;<a class="elsevierStyleCrossRef" href="#bib0435"><span class="elsevierStyleSup">11</span></a> An association has also been observed between tumor regression and melanomas with a lower mitotic or proliferative rate&#44; i&#46;e&#46;&#44; melanomas with a better prognosis<a class="elsevierStyleCrossRef" href="#bib0440"><span class="elsevierStyleSup">12</span></a> &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">The appearance of a halo around nevi provides further evidence of autoimmune reactivity and this halo can eventually cause the nevus to disappear completely&#46; Vitiligo has also been observed in 2&#37; to 7&#37; of advanced melanomas following systemic therapy and has been linked to a better prognosis&#46;<a class="elsevierStyleCrossRef" href="#bib0445"><span class="elsevierStyleSup">13</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">Although the above findings and observations only serve to generate hypotheses&#44; numerous studies have demonstrated the participation of the immune system in regressive melanoma&#46; Findings include predominant infiltration of tumors by T lymphocytes&#44; which are mediators of the innate immune system&#44;<a class="elsevierStyleCrossRef" href="#bib0450"><span class="elsevierStyleSup">14</span></a> and oligoclonal expansion of T lymphocytes in melanomas with extensive areas of regression&#46;<a class="elsevierStyleCrossRef" href="#bib0455"><span class="elsevierStyleSup">15</span></a> Adoptive cell therapy with T lymphocytes isolated from regressive melanomas has also been show to generate cytolytic activity against autologous melanomas&#46;<a class="elsevierStyleCrossRef" href="#bib0460"><span class="elsevierStyleSup">16</span></a></p><p id="par0045" class="elsevierStylePara elsevierViewall">Whatever the case&#44; the development of melanoma implies a breakdown in the body&#39;s defense system&#46; This immune system failure is mediated by both factors that are intrinsic to the tumor cells and impaired immune defenses&#44; which reduce the ability of the immune system to exert its effector function&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">Suboptimal activation of specific T lymphocytes due to weak or absent expression of antigens in melanoma cells is known to result in immune response failure&#46;<a class="elsevierStyleCrossRef" href="#bib0465"><span class="elsevierStyleSup">17</span></a> The expression of endothelial adhesion molecules in the tumor is also reduced&#44; and in addition&#44; certain cells in the tumor infiltrate&#44; such as macrophages&#44; release growth factors&#44; cytokines&#44; and suppressors of immune response&#46;<a class="elsevierStyleCrossRefs" href="#bib0470"><span class="elsevierStyleSup">18&#44;19</span></a></p><p id="par0055" class="elsevierStylePara elsevierViewall">The antitumor immune response alone thus is not sufficient to produce the elimination of tumor cells&#44; but it can favor response to immunotherapy&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Antigens That Trigger an Immune Response</span><p id="par0060" class="elsevierStylePara elsevierViewall">Two signals are needed for the activation of T lymphocytes&#46; First&#44; the T-cell receptor &#40;TCR&#41; recognizes the antigen presented by dendritic cells through the major histocompatibility complex&#44; and second&#44; the cluster of differentiation &#40;CD&#41; antigen 28 expressed on the surface of T lymphocytes produces a costimulatory signal by binding to its ligands B7-1 or B7-2&#46; Without this second signal&#44; the T lymphocytes would not respond to the stimulus&#44; resulting in anergy&#46;<a class="elsevierStyleCrossRef" href="#bib0480"><span class="elsevierStyleSup">20</span></a></p><p id="par0065" class="elsevierStylePara elsevierViewall">Activated T lymphocytes must then migrate to the site of the tumor&#44; where they will act to destroy the tumor cells&#46;<a class="elsevierStyleCrossRef" href="#bib0485"><span class="elsevierStyleSup">21</span></a> These intratumoral cells&#44; however&#44; often exhibit decreased proliferation&#44; cytokine production&#44; and cytolytic activity&#44; although outside the tumor microenvironment&#44; they have been shown to mount powerful specific responses&#44; suggesting the existence of signals in this microenvironment that block lymphocyte function&#46;<a class="elsevierStyleCrossRef" href="#bib0490"><span class="elsevierStyleSup">22</span></a></p><p id="par0070" class="elsevierStylePara elsevierViewall">The activation of TCR also produces signals that stimulate immune checkpoint inhibitors&#46; Cytotoxic T-lymphocyte associated antigen 4 &#40;CTLA-4&#41; and programmed cell death protein 1 &#40;PD-1&#41; are cell surface receptors involved in the regulation of activated T lymphocytes&#46; They belong to the B7-CD28 superfamily and by binding to their ligands&#44; they trigger inhibitory pathways resulting in reduced T-lymphocyte activity&#46;<a class="elsevierStyleCrossRef" href="#bib0495"><span class="elsevierStyleSup">23</span></a></p><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Cytotoxic T-Lymphocyte Associated Antigen</span><p id="par0075" class="elsevierStylePara elsevierViewall">Activated T lymphocytes express CTLA-4&#46; This receptor is expressed approximately 24 to 48<span class="elsevierStyleHsp" style=""></span>hours after activation and it binds to B7 with a greater infinity than to CD28&#44; providing an inhibitory signal to T lymphocytes&#46;<a class="elsevierStyleCrossRef" href="#bib0500"><span class="elsevierStyleSup">24</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">CTLA-4 is a powerful coinhibitor that has a role in the development of tolerance from early on&#46; Studies of CTLA-1<span class="elsevierStyleSup">-</span>&#47;<span class="elsevierStyleSup">&#8722;</span> mice have shown that the absence of CTLA-4 results in a massive infiltrate of autoreactive T lymphocytes in diverse tissues&#44; with death occurring within 2 to 3 weeks<a class="elsevierStyleCrossRefs" href="#bib0505"><span class="elsevierStyleSup">25&#44;26</span></a> &#40;<a class="elsevierStyleCrossRef" href="#fig0010">Fig&#46; 2</a>&#41;&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">PD-1 and PD Ligand 1</span><p id="par0085" class="elsevierStylePara elsevierViewall">PD-1 is a transmembrane receptor of the CD28 family that is normally expressed in activated CD4<span class="elsevierStyleSup">&#43;</span> and CD8<span class="elsevierStyleSup">&#43;</span> lymphocytes&#46;<a class="elsevierStyleCrossRef" href="#bib0515"><span class="elsevierStyleSup">27</span></a> It has an immunosuppressive function&#44; which under normal conditions prevents an excessive immune response to autologous cells&#46; PD-1 expression is induced by the activation of T lymphocytes and is interrupted when the antigen is eliminated by the immune response&#46; If this response is inadequate&#44; however&#44; PD-1 expression persists&#44; generating a phenotype of ineffective T lymphocytes&#46;<a class="elsevierStyleCrossRef" href="#bib0520"><span class="elsevierStyleSup">28</span></a></p><p id="par0090" class="elsevierStylePara elsevierViewall">PD-1 has 2 ligands&#58; PD-ligand 1 &#40;PD-L1&#41;&#44; also known as <span class="elsevierStyleItalic">B7-H1</span> and <span class="elsevierStyleItalic">CD274</span>&#44; and PD-L2 &#40;B7-DC or CD273&#41;&#46; PD-L1 is expressed in more cells than PD-L2&#46; When PD-L1 is expressed on the surface of tumor cells and binds to PD-1 on T lymphocytes&#44; it activates a signaling cascade that suppresses TCR activation&#44; thereby preventing the release of growth factors and survival signals&#46;<a class="elsevierStyleCrossRef" href="#bib0525"><span class="elsevierStyleSup">29</span></a> Evidently&#44; thus&#44; binding of PD-1 expressed on the surface of T lymphocytes to its ligand has a key role in blocking the immune response &#40;<a class="elsevierStyleCrossRef" href="#fig0015">Fig&#46; 3</a>&#41;&#46;</p><elsevierMultimedia ident="fig0015"></elsevierMultimedia></span></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">The Mechanism of Action of Immunomodulators</span><p id="par0095" class="elsevierStylePara elsevierViewall">Numerous treatment strategies aimed at boosting the antitumor immune response have been developed since the 1980s&#44; but they have had limited success&#46;<a class="elsevierStyleCrossRef" href="#bib0460"><span class="elsevierStyleSup">16</span></a> Recent years&#44; however&#44; have witnessed the emergence of a new strategy based on the blockage of receptors that inhibit the antitumor immune response rather than on the direct reactivation of the immune system&#46; The antibodies used in these treatments bind not to the tumor cells but to the lymphocytes in order to stimulate a response&#46;</p><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">CTLA-4 Inhibition</span><p id="par0100" class="elsevierStylePara elsevierViewall">T lymphocytes express CTLA-4 on their surface within 2 to 3 days of activation and as a consequence exhibit reduced activity&#46;<a class="elsevierStyleCrossRef" href="#bib0530"><span class="elsevierStyleSup">30</span></a> In theory&#44; thus&#44; CTLA-4 blockade would allow specific T cells to maintain their activity&#46;</p><p id="par0105" class="elsevierStylePara elsevierViewall">The above theory was proven by the use of fully humanized monoclonal antibodies targeting CTLA-4&#44; such as ipilimumab&#46; By interfering with CTLA-4-B7 binding&#44; the inhibitory stimulus disappears&#44; and the lymphocytes maintain their activity&#46;<a class="elsevierStyleCrossRef" href="#bib0535"><span class="elsevierStyleSup">31</span></a> While this interaction means that the immune system will continue to fight against the tumor cells&#44; it also means that it will target nontumor cells &#40;<a class="elsevierStyleCrossRef" href="#fig0020">Fig&#46; 4</a>&#41;&#46;</p><elsevierMultimedia ident="fig0020"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">PD-1 and PD-L1 Blockade</span><p id="par0110" class="elsevierStylePara elsevierViewall">PD-1 needs to bind to its ligands in order to exert its inhibitory effect&#46; Most tissues&#44; including tumor cells&#44; express PD-L1&#46; PD-L2&#44; by contrast&#44; is expressed only on dendritic cells&#44; macrophages&#44; mast cells&#44; and B lymphocytes&#46;<a class="elsevierStyleCrossRef" href="#bib0540"><span class="elsevierStyleSup">32</span></a> PD-L1 expression on tumor cells can be mediated by oncogenic processes secondary to activating mutations&#44; or activated by interferon released by specific T lymphocytes infiltrating the tumor&#46;<a class="elsevierStyleCrossRefs" href="#bib0545"><span class="elsevierStyleSup">33&#44;34</span></a> PD-L1 expression&#44; however&#44; can apparently only be induced if T lymphocytes expressing PD-1 exist&#46; This phenomenon is known as <span class="elsevierStyleItalic">adaptive immune resistance</span><a class="elsevierStyleCrossRef" href="#bib0555"><span class="elsevierStyleSup">35</span></a> &#40;<a class="elsevierStyleCrossRef" href="#fig0025">Fig&#46; 5</a>&#41;&#46;</p><elsevierMultimedia ident="fig0025"></elsevierMultimedia><p id="par0115" class="elsevierStylePara elsevierViewall">The above pathway can be inhibited by blocking PD-1&#44; preventing it from binding to PD-L1 or PD-L2&#44; or blocking PD-L1&#44; impeding thus its interaction with PD-1&#46;</p><p id="par0120" class="elsevierStylePara elsevierViewall">Unlike CTLA-4-deficient mice&#44; PD-1- and PD-L1-deficient mice do not die early&#44; but rather progressively develop multiple autoimmune disorders&#46;<a class="elsevierStyleCrossRefs" href="#bib0560"><span class="elsevierStyleSup">36&#44;37</span></a> This would explain the wide range of adverse effects observed in patients treated with immunomodulators&#46;</p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Oncolytic Viruses</span><p id="par0125" class="elsevierStylePara elsevierViewall">Oncolytic viral therapy is a new tool that has proven effective in the treatment of multiple solid tumors&#44; including melanoma&#46;<a class="elsevierStyleCrossRef" href="#bib0570"><span class="elsevierStyleSup">38</span></a> The best results to date have been obtained with oncolytic herpes simplex virus type 1 &#40;HSV-1&#41; vectors&#46; HSV-1 is a strongly oncolytic genetically modified virus that selectively infects and replicates in tumor cells&#44; but spares healthy cells&#46;<a class="elsevierStyleCrossRef" href="#bib0575"><span class="elsevierStyleSup">39</span></a></p></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Immunomodulatory Drugs</span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Anti-CTLA-4 Antibodies</span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Ipilimumab</span><p id="par0130" class="elsevierStylePara elsevierViewall">Ipilimumab was the first immunomodulatory drug with proven survival benefits in patients with metastatic melanoma&#46;<a class="elsevierStyleCrossRefs" href="#bib0535"><span class="elsevierStyleSup">31&#44;40</span></a> It was approved by the US Food and Drug Administration &#40;FDA&#41; in 2011 and by the European Medicines Agency &#40;EMA&#41; just a few months later<a class="elsevierStyleCrossRef" href="#bib0585"><span class="elsevierStyleSup">41</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0135" class="elsevierStylePara elsevierViewall">A randomized controlled trial comparing ipilimumab and dacarbazine showed longer overall survival for patients treated with ipilimumab&#46;<a class="elsevierStyleCrossRef" href="#bib0590"><span class="elsevierStyleSup">42</span></a> Median survival was just 9&#46;5 months&#44; but what was remarkable was that 22&#37; of patients survived long term&#46;<a class="elsevierStyleCrossRef" href="#bib0595"><span class="elsevierStyleSup">43</span></a></p><p id="par0140" class="elsevierStylePara elsevierViewall">Because of its mechanism of action&#44; ipilimumab is associated with a large number of adverse effects&#44; most of which are of an autoimmune nature&#46; Adverse effects have been reported in approximately 60&#37; of patients treated with this drug&#46;<a class="elsevierStyleCrossRef" href="#bib0600"><span class="elsevierStyleSup">44</span></a> The most common effects are diarrhea&#44; colitis&#44; dermatitis&#44; hypophysitis&#44; and thyroiditis&#46; Just 10&#37; to 15&#37; of adverse effects are moderate or severe &#40;grade 3 or 4&#41; and they tend to resolve within 4 to 6 weeks with corticosteroids or in a relatively short time with other immunosuppressants<a class="elsevierStyleCrossRef" href="#bib0605"><span class="elsevierStyleSup">45</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#41;&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><p id="par0145" class="elsevierStylePara elsevierViewall">Pseudoprogression is a common phenomenon following the introduction of immunomodulatory drugs&#46; It is due to the activation of T lymphocytes and the release of cytokines&#44; which produce chemotaxis of inflammatory mediators&#44; edema&#44; and even local necrosis&#44; causing a temporary increase in tumor volume&#46;<a class="elsevierStyleCrossRef" href="#bib0600"><span class="elsevierStyleSup">44</span></a> Pseudoprogression is more common in melanoma than in other tumors&#44; and it is something that clinicians need to be familiar with in order not to interrupt treatment in patients who could ultimately benefit from immunotherapy&#44; despite the initial increase in tumor size&#46;</p><p id="par0150" class="elsevierStylePara elsevierViewall">Pseudoprogression is also a limiting factor for the use of immunomodulatory drugs in patients with advanced metastatic disease in high-risk locations&#44; such as metastases to the central nervous system&#46; An increase in tumor volume&#44; albeit temporary&#44; would be life-threatening in such cases&#46;</p></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Tremelimumab</span><p id="par0155" class="elsevierStylePara elsevierViewall">Tremelimumab is an IgG2 anti-CTLA-4 antibody&#46; Despite the successful results reported in early-phase trials&#44; the phase III trial showed no significant differences between tremelimumab and chemotherapy&#44; and the drug was therefore not approved for use in advanced melanoma&#46;<a class="elsevierStyleCrossRef" href="#bib0610"><span class="elsevierStyleSup">46</span></a></p></span></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Anti-PD-1 Antibodies</span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Nivolumab</span><p id="par0160" class="elsevierStylePara elsevierViewall">Nivolumab was the first anti-PD-1 antibody that showed good tolerance and significant response in several patients with solid tumors&#46;<a class="elsevierStyleCrossRef" href="#bib0615"><span class="elsevierStyleSup">47</span></a> It was approved for use in Spain at the end of 2015&#44; and in February of the following year&#44; was made available for patients with unresectable or metastatic melanoma&#44; regardless of <span class="elsevierStyleItalic">BRAF</span> mutation status&#46; It is a monoclonal antibody with high affinity for PD-1&#46; It blocks interactions between this receptor and PD-L1 and PD-L2&#44; increasing specific T lymphocyte proliferation and cytokine production&#46;<a class="elsevierStyleCrossRefs" href="#bib0615"><span class="elsevierStyleSup">47&#44;48</span></a></p><p id="par0165" class="elsevierStylePara elsevierViewall">The results of the first phase III trial showed nivolumab to be superior to chemotherapy&#44; and this superiority was confirmed in later trials<a class="elsevierStyleCrossRefs" href="#bib0620"><span class="elsevierStyleSup">48&#44;49</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#46; The main treatment-related adverse effects are fatigue&#44; diarrhea&#44; nausea&#44; anorexia&#44; and fever&#46; Practically all the adverse effects resolve spontaneously or with the administration of systemic corticosteroids&#46; Autoimmune-type effects include cutaneous effects &#40;exanthema&#44; pruritus&#44; vitiligo&#41;&#44; gastrointestinal effects &#40;diarrhea&#44; colitis&#41;&#44; elevated liver enzymes&#44; hypothyroidism or hyperthyroidism&#44; and pneumonitis&#46;<a class="elsevierStyleCrossRef" href="#bib0635"><span class="elsevierStyleSup">51</span></a> Although adverse effects are relatively uncommon&#44; careful monitoring of patients&#44; together with initiation of treatment where necessary&#44; is essential&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Pembrolizumab</span><p id="par0170" class="elsevierStylePara elsevierViewall">Pembrolizumab is the monoclonal antibody with the highest affinity for PD-1&#46; The results from phase I and II trials led the authorities to grant accelerated approval for the use of this drug in patients with advanced melanoma who did not respond to ipilimumab&#46;<a class="elsevierStyleCrossRefs" href="#bib0640"><span class="elsevierStyleSup">52&#44;53</span></a> Pembrolizumab is associated with better responses and survival rates than either chemotherapy or ipilimumab&#46;<a class="elsevierStyleCrossRefs" href="#bib0650"><span class="elsevierStyleSup">54&#8211;56</span></a> The most common adverse effects are asthenia&#44; skin rash&#44; pruritus&#44; and diarrhea<a class="elsevierStyleCrossRefs" href="#bib0640"><span class="elsevierStyleSup">52&#44;55</span></a> &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#46;</p><p id="par0175" class="elsevierStylePara elsevierViewall">Both nivolumab and pembrolizumab were approved for use in advanced &#40;unresectable or metastatic&#41; melanoma by the Spanish Agency for Medicines and Medical Devices &#40;AEMPS&#41; in January 2016&#46;<a class="elsevierStyleCrossRefs" href="#bib0665"><span class="elsevierStyleSup">57&#44;58</span></a></p><p id="par0180" class="elsevierStylePara elsevierViewall">Another anti-PD-1 antibody&#44; pidilizumab&#44; was found to be inferior to both nivolumab and pembrolizumab and was not granted approval&#46;<a class="elsevierStyleCrossRef" href="#bib0675"><span class="elsevierStyleSup">59</span></a></p></span></span><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Anti PD-L1 Antibodies</span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Atezolizumab</span><p id="par0185" class="elsevierStylePara elsevierViewall">The first results reported for atezolizumab in melanoma showed response rates of up to 29&#37;&#46; When combined with vemurafenib&#44; however&#44; an objective response rate &#40;for complete and partial responses&#41; of 76&#37; was observed&#46;<a class="elsevierStyleCrossRef" href="#bib0680"><span class="elsevierStyleSup">60</span></a></p></span><span id="sec0095" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">BMS-936559</span><p id="par0190" class="elsevierStylePara elsevierViewall">BMS-936559 is a fully humanized IgG4 anti-PD-L1 antibody&#46; Preliminary studies have shown response rates of over 17&#37; and a low rate of adverse effects &#40;9&#37;&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0685"><span class="elsevierStyleSup">61</span></a></p></span><span id="sec0100" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">MED14736</span><p id="par0195" class="elsevierStylePara elsevierViewall">MED14736 is a fully humanized IgG1 anti-PD-L1 antibody&#46; It is currently being investigated in a combined study together with dabrafenib and trametinib&#46; Provisional results have shown response rates of over 65&#37; and severe adverse effects in 35&#37; to 40&#37; of patients&#46;<a class="elsevierStyleCrossRef" href="#bib0690"><span class="elsevierStyleSup">62</span></a></p></span></span><span id="sec0105" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0125">Oncolytic Viruses</span><span id="sec0110" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0130">Talimogene Laherparepvec</span><p id="par0200" class="elsevierStylePara elsevierViewall">Talimogene laherparepvec was approved for use in patients with unresectable melanoma and regional and distance metastases &#40;stages IIIB&#44; IIIC&#44; and IVM1a&#41; without visceral involvement at the end of 2015&#46;<a class="elsevierStyleCrossRef" href="#bib0695"><span class="elsevierStyleSup">63</span></a> It is an attenuated HSV-I vector produced by genetic recombination&#44; designed to specifically replicate inside tumor cells and produce human granulocyte-macrophage colony stimulating factor &#40;GM-CSF&#41; with the aim of stimulating the systemic antitumor response&#46;</p><p id="par0205" class="elsevierStylePara elsevierViewall">It is administered subcutaneously and must be injected directly into cutaneous melanoma lesions&#46; In patients with multiple lesions&#44; the largest lesions must be treated first</p><p id="par0210" class="elsevierStylePara elsevierViewall">Treatment with talimogene laherparepvec has shown response rates of 26&#37;&#44; together a favorable adverse effect profile and increased in long-term survival&#46;<a class="elsevierStyleCrossRef" href="#bib0700"><span class="elsevierStyleSup">64</span></a> Compared with ipilimumab and vemurafenib&#44; talimogene laherparepvec showed comparable or slightly superior overall survival outcomes&#44; particularly in patients with visceral metastasis&#46;<a class="elsevierStyleCrossRef" href="#bib0705"><span class="elsevierStyleSup">65</span></a></p></span></span></span><span id="sec0115" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0135">Drug Combinations</span><p id="par0215" class="elsevierStylePara elsevierViewall">CTLA-4 and PD-1 exert an inhibitory function through different pathways&#44; and therefore blockade of both receptors should favor the destruction of tumor cells by the immune system&#46; This theory was first proven in animal models<a class="elsevierStyleCrossRef" href="#bib0710"><span class="elsevierStyleSup">66</span></a> and later in humans&#46; To date&#44; randomized clinical trials have investigated the combined use of nivolumab and ipilimumab and shown higher response rates than those achieved with either treatment alone&#46;<a class="elsevierStyleCrossRefs" href="#bib0715"><span class="elsevierStyleSup">67&#8211;69</span></a> Nonetheless&#44; over half of the patients treated developed serious adverse effects&#46; The most common serious effects were colitis&#44; diarrhea&#44; and elevated liver enzymes&#44; and most cases required treatment with systemic corticosteroids&#46;<a class="elsevierStyleCrossRefs" href="#bib0720"><span class="elsevierStyleSup">68&#44;69</span></a></p><p id="par0220" class="elsevierStylePara elsevierViewall">The combined use of nivolumab and ipilimumab was approved by the FDA in September 2015 and is currently pending approval by the EMA&#46;</p></span><span id="sec0120" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0140">Biomarkers of Response to Immunotherapy</span><p id="par0225" class="elsevierStylePara elsevierViewall">Following the success of immunotherapy&#44; research has now turned to the search for biomarkers capable of identifying patients with a greater chance of responding to treatment&#46;</p><p id="par0230" class="elsevierStylePara elsevierViewall">Expression of PD-L1 in pretreatment tumor samples has shown the clearest association with response to date&#44; with an increased response to anti PD-1 and anti PD-L1 antibodies observed in PD-L1-positive patients&#46;<a class="elsevierStyleCrossRefs" href="#bib0550"><span class="elsevierStyleSup">34&#44;70&#44;71</span></a> No association has been found between PD-L1 expression and response to ipilimumab and nivolumab combination therapy&#46;<a class="elsevierStyleCrossRef" href="#bib0720"><span class="elsevierStyleSup">68</span></a></p><p id="par0235" class="elsevierStylePara elsevierViewall">PD-L1 has several disadvantages in terms of its potential as a biomarker&#46; Its expression is highly variable&#44; even in samples from the same patient&#44; and in addition&#44; although greater clinical benefits have been observed in PD-L1-positive patients&#44; a considerable number of PD-L1-negative patients also respond to treatment&#46;<a class="elsevierStyleCrossRefs" href="#bib0680"><span class="elsevierStyleSup">60&#44;70</span></a></p><p id="par0240" class="elsevierStylePara elsevierViewall">Interferon released by CD8<span class="elsevierStyleSup">&#43;</span> cells infiltrating the tumor margin and parenchyma is another potential confounder&#44; as it induces PD-L1 expression in tumor cells &#40;adaptive immune response&#41;&#46; PD-L1 expression is thus an indirect marker of antigen-specific T lymphocyte activation&#46; Tumors with higher levels of PD-L1 and PD-1 respond better to treatment&#44; but specific CD8<span class="elsevierStyleSup">&#43;</span> lymphocytes must first be present&#46;<a class="elsevierStyleCrossRef" href="#bib0740"><span class="elsevierStyleSup">72</span></a></p><p id="par0245" class="elsevierStylePara elsevierViewall">Generally speaking&#44; the best biomarker currently available for predicting response to any immunomodulatory drug is the presence of CD8<span class="elsevierStyleSup">&#43;</span> at the tumor margin&#46;<a class="elsevierStyleCrossRef" href="#bib0740"><span class="elsevierStyleSup">72</span></a></p></span><span id="sec0125" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0145">Future Prospects</span><span id="sec0130" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0150">Future combinations</span><p id="par0250" class="elsevierStylePara elsevierViewall">Multiple trials are underway investigating combinations of immunomodulatory drugs and other treatments for use in patients with advanced melanoma&#46;</p><p id="par0255" class="elsevierStylePara elsevierViewall">Both CTLA-4 and PD-1 inhibit immune response through different pathways&#44; and it is therefore essential to consider their synergistic use&#46; In the case of targeted therapies and oncolytic viral therapy&#44; the antigens released as a result of the death of tumor cells are presented to the lymphocytes by antigen-presenting cells&#44; which also release certain cytokines and chemokines&#46; These events all induce an antitumor immune response&#44; and in this sense anti-BRAF drugs&#44; oncolytic viruses&#44; and peptidic vaccines could favor response to immunomodulatory drugs&#46;<a class="elsevierStyleCrossRef" href="#bib0745"><span class="elsevierStyleSup">73</span></a></p></span><span id="sec0135" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0155">Adjuvant Therapy</span><p id="par0260" class="elsevierStylePara elsevierViewall">Preventive treatment in patients with a greater risk of metastasis is one of the key challenges in the management of melanoma&#46; The options currently used to control locally advanced tumors are surgery&#44; sentinel lymph node biopsy&#44; and interferon &#945;&#46; Nonetheless&#44; the possibility of effectively treating these patients with other agents could change the course of disease&#44; as well as management approaches by dermatologists&#46;</p><p id="par0265" class="elsevierStylePara elsevierViewall">In October 2015&#44; the FDA&#44; following the results of a clinical trial&#44; approved ipilimumab for use as adjuvant therapy in patients with locally advanced melanoma&#44; i&#46;e&#46;&#44; in patients with stage <span class="elsevierStyleSmallCaps">iii</span> melanoma&#44; lymph node metastases &#62;<span class="elsevierStyleHsp" style=""></span>1<span class="elsevierStyleHsp" style=""></span>mm&#44; and complete lymph node dissection&#46;<a class="elsevierStyleCrossRef" href="#bib0750"><span class="elsevierStyleSup">74</span></a> The trial showed a 5-year disease-free survival rate of 40&#46;8&#37; versus 30&#46;3&#37; for the placebo group&#46;<a class="elsevierStyleCrossRef" href="#bib0755"><span class="elsevierStyleSup">75</span></a> Nevertheless&#44; 45&#37; of patients experienced grade 3 or 4 adverse effects&#44; although the severity of these effects can be considerably reduced through adequate management&#46; The most common adverse effects associated with ipilimumab are diarrhea&#44; colitis&#44; endocrine effects &#40;hypophysitis with hypopituitarism&#44; hypothyroidism or hyperthyroidism&#44; and adrenal dysfunction&#41;&#44; vitiligo&#44; exanthema&#44; pruritus&#44; and fatigue&#46;</p><p id="par0270" class="elsevierStylePara elsevierViewall">Multiple studies are currently investigating the use of immunomodulatory drugs other than ipilimumab as adjuvant therapy for patients with high-risk tumors following complete excision&#44; and their results will become available in the coming years&#46;<a class="elsevierStyleCrossRef" href="#bib0760"><span class="elsevierStyleSup">76</span></a></p></span></span><span id="sec0140" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0160">Conclusions</span><p id="par0275" class="elsevierStylePara elsevierViewall">Treatment of melanoma has changed significantly since the introduction of immunotherapy scarcely 5 years ago&#44; and survival rates are much higher than those obtained with previous treatments&#46;</p><p id="par0280" class="elsevierStylePara elsevierViewall">Nevertheless&#44; the discovery of any new treatment necessitates new studies to better understand the underlying mechanisms of action&#46; Research in the field of immunotherapy and melanoma should focus on identifying criteria for selecting the most suitable candidates for treatment and exploring which drugs or combinations of drugs produce the best responses&#46; The effectiveness of immunomodulatory drugs could be even further enhanced by combining their use with other approaches&#44; such as targeted therapy and oncolytic viral therapy&#46;</p><p id="par0285" class="elsevierStylePara elsevierViewall">In conclusion&#44; boosting the immune response is a key factor in the treatment of melanoma and will probably form part of all treatment regimens yet to come&#46;</p></span><span id="sec0145" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0165">Ethical Disclosures</span><span id="sec0150" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0170">Protection of humans and animals</span><p id="par0290" class="elsevierStylePara elsevierViewall">The authors declare that no tests were carried out in humans or animals for the purpose of this study&#46;</p></span><span id="sec0155" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0175">Confidentiality of data</span><p id="par0295" class="elsevierStylePara elsevierViewall">The authors declare that they have followed their hospital&#39;s protocol on the publication of data concerning patients&#46;</p></span><span id="sec0160" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0180">Right to privacy and informed consent</span><p id="par0300" class="elsevierStylePara elsevierViewall">The authors declare that no private patient data appear in this article&#46;</p></span></span><span id="sec0165" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0185">Conflicts of Interest</span><p id="par0305" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest&#46;</p></span></span>"
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          "titulo" => "Introduction"
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        5 => array:2 [
          "identificador" => "sec0010"
          "titulo" => "Evidence Supporting the Immune Response in Melanoma"
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        6 => array:3 [
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          "titulo" => "Antigens That Trigger an Immune Response"
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              "titulo" => "Cytotoxic T-Lymphocyte Associated Antigen"
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              "titulo" => "PD-1 and PD Ligand 1"
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          "titulo" => "The Mechanism of Action of Immunomodulators"
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          "titulo" => "Drug Combinations"
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          "titulo" => "Acknowledgments"
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    "fechaRecibido" => "2016-05-18"
    "fechaAceptado" => "2017-01-31"
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            1 => "Clinical oncology"
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            0 => "Melanoma"
            1 => "Oncolog&#237;a cl&#237;nica"
            2 => "Inmunolog&#237;a"
            3 => "Inmunoterapia"
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        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Approaches to treating melanoma have changed radically since the introduction of immunotherapy&#44; and survival figures are now higher than possible with earlier therapies&#46; The immunomodulators currently available mainly block CTLA-4 &#40;cytotoxic<span class="elsevierStyleHsp" style=""></span>T lymphocyte-associated molecule-4&#41; and PD-1 &#40;programed cell death protein 1&#41; translocated to the cell surface&#44; where they inhibit the antitumor immune response&#46; Treatments blocking these molecules are being more widely used&#46; Research now seeks new molecular targets&#44; the best combinations of available drugs&#44; and biomarkers that can identify ideal candidates for each one</p></span>"
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        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Desde la introducci&#243;n de la inmunoterapia el tratamiento del melanoma ha sufrido una revoluci&#243;n&#44; consigui&#233;ndose cifras de supervivencia superiores a las que se alcanzaban con los tratamientos previos&#46; Los f&#225;rmacos inmunomoduladores disponibles actualmente van dirigidos principalmente frente a las mol&#233;culas de superficie CTLA-4 y PD-1&#44; que ejercen un efecto inhibidor sobre la respuesta inmune antitumoral&#46; Se trata de un tratamiento en pleno proceso de expansi&#243;n&#44; y la investigaci&#243;n se dirige hacia el descubrimiento de nuevas mol&#233;culas&#44; las combinaciones de los f&#225;rmacos disponibles o la identificaci&#243;n de biomarcadores que permitan seleccionar a los pacientes id&#243;neos para cada terapia&#46;</p></span>"
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        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0020">Please cite this article as&#58; Escandell I&#44; Mart&#237;n JM&#44; Jord&#225; E&#46; Novedades en inmunolog&#237;a del melanoma&#46; Actas Dermosifiliogr&#46; 2017&#59;108&#58;708&#8211;720&#46;</p>"
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          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Image showing regression in melanoma&#46; A&#44; Clinical image showing a central region with loss of pigment&#46; B&#44; Dermoscopic features of the lesion showing a multicomponent pattern with a central white area&#46; C and D&#44; Histologic images showing a dense lymphocytic infiltrate in the dermis without epidermal involvement&#44; together with melanophages and fibrosis in the dermis &#40;hematoxylin-eosin&#44; original magnification &#215;10 &#91;C&#93; and &#215;20 &#91;D&#93;&#41;&#46;</p>"
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          "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Diagram showing T lymphocyte activation&#46; Activation of T lymphocyte after interaction between TCR and HLA and between costimulatory molecules B7 and CD28 &#40;left&#41;&#46; Inhibition of response following binding of CTLA-4 to B7 &#40;right&#41;&#46;</p> <p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">TCR indicates T-cell receptor&#59; CD28&#44; cluster of differentiation 28&#59; MHC&#44; major histocompatibility complex&#59; CTLA-4&#44; cytoxic T-lymphocyte associated protein 4&#46;</p>"
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          "en" => "<p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Diagram showing PD-1 and PD-L1 activity&#46; Activation of T lymphocyte by interaction between stimulatory and costimulatory molecules &#40;left&#41;&#46; Inhibition of T cell following binding of PD-1 to PD-L1 &#40;right&#41;&#46;</p> <p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">APC indicates antigen-presenting cell&#59; MHC&#44; major histocompatibility complex&#59; TCR&#44; T-cell receptor&#59; CD28&#44; cluster of differentiation 28&#59; PD-1&#44; programmed death protein 1&#59; PD-L1&#44; programmed death protein ligand 1&#46;</p>"
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          "en" => "<p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Diagram showing activity of ipilimumab&#46; T-lymphocyte inhibition through binding between CTLA-4 and B7 &#40;left&#41;&#46; Activation of T lymphocyte through CTLA-4 blockade following binding between CTLA-4 and the monoclonal antibody ipilimumab&#46;</p> <p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">TCR indicates T-cell receptor&#59; CD28&#44; cluster of differentiation 28&#59; MHC&#44; major histocompatibility complex&#59; CTLA-4&#44; cytoxic T-lymphocyte associated protein 4&#46;</p>"
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          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Interaction between PD-1 and PD-L1 leading to T-lymphocyte inhibition &#40;left&#41;&#46; Binding between anti PD-1 drugs such as nivolumab or pembrolizumab to PD-1 on the surface of the lymphocytes&#44; resulting in their activation and hence the generation of the antitumor response &#40;right&#41;&#46;</p> <p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">APC indicates antigen-presenting cell&#59; MHC&#44; major histocompatibility complex&#59; TCR&#44; T-cell receptor&#59; CD28&#44; cluster of differentiation 28&#59; PD-1&#44; programmed death protein 1&#59; PD-L1&#44; programmed death protein ligand 1&#46;</p>"
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          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Abbreviations&#58; CTLA-4&#44; cytoxic T-lymphocyte associated protein 4&#59; HSV-1&#44; herpes simplex virus type 1&#59; Ig&#44; immunoglobulin&#59; PD-1&#44; programmed death protein 1&#59; PFU&#44; plaque-forming units&#59; PD-L1&#44; programmed death protein ligand 1</p>"
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Agent&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Previous Names&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Commercial Name&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Pharmaceutical Company&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Therapeutic Target&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Type of Molecule&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Administration Route&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Dose&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">MDX-010 MDX-101&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Yervoy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Bristol-Myers Squibb&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">CTLA-4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Humanized recombinant IgG1 antibody&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intravenous&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg every 3 wk up to 4 doses&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">MDX-1106&#44; ONO-4538 BMS-936558&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Opdivo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Bristol-Myers Squibb&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">PD-1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Fully humanized IgG4 antibody&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intravenous &#40;for 60<span class="elsevierStyleHsp" style=""></span>min&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">3<span class="elsevierStyleHsp" style=""></span>mg&#47;kg every 2 wk&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">MK-3475&#44; Lambrolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Keytruda&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Merck&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">PD-1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Humanized IgG4 antibody&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intravenous&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">2<span class="elsevierStyleHsp" style=""></span>mg&#47;kg every 3 wk&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Pidilizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">CT-011&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top"><span class="elsevierStyleItalic">&#8211;</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Medivation&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">PD-1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Humanized IgG1 antibody&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intravenous&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">1&#46;5<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Atezolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">MPDL-3280A&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top"><span class="elsevierStyleItalic">&#8211;</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Roche&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">PD-L1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Humanized IgG1 antibody&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intravenous&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">15<span class="elsevierStyleHsp" style=""></span>mg&#47;kg every 3 wk&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Talimogene laherparepvec&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">JS1&#47;34&#46;5-&#47;47-&#47;&#40;GM-CSF&#41;&#59; Onco-Vex<span class="elsevierStyleSup">GM-CSF</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Imlygic&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Amgen&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Tumor cells&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Attenuated HSV-1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Subcutaneous&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">First visit&#58; Vial containing 10<span class="elsevierStyleSup">6</span> PFU&#47;mL<br>Subsequent visits&#58; Vial containing 10<span class="elsevierStyleSup">8</span> PFU&#47;mL &#40;maximum 4<span class="elsevierStyleHsp" style=""></span>mL&#47;visit&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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                0 => "xTab1527649.png"
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          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Commercial Data&#44; Characteristics&#44; and Administration Route for Currently Available Immunomodulatory Drugs&#46;</p>"
        ]
      ]
      6 => array:8 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
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          "leyenda" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">Source&#58; National Cancer Institute&#46;<a class="elsevierStyleCrossRef" href="#bib0605"><span class="elsevierStyleSup">45</span></a></p>"
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            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Grade&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Category&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Description&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Mild&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Asymptomatic or mild symptoms&#46; Intervention not indicated&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">II&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Moderate&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Symptomatic&#44; limits instrumental activities of daily living&#46;<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a> Local or noninvasive intervention indicated&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Severe&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Not immediately life-threatening but limits self-care activities of daily living&#46;<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">b</span></a> Hospitalization indicated&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">IV&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Very Severe&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Life-threatening adverse effects&#46; Urgent intervention indicated&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">V&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Death&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Death related to administration of drug&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
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            0 => array:3 [
              "identificador" => "tblfn0005"
              "etiqueta" => "a"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Preparing meals&#44; shopping for groceries or clothes&#44; using the telephone&#44; managing money&#44; etc&#46;</p>"
            ]
            1 => array:3 [
              "identificador" => "tblfn0010"
              "etiqueta" => "b"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Bathing&#44; dressing and undressing&#44; feeding self&#44; using the toilet&#44; taking medication&#44; not bedridden&#46;</p>"
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Classification of Adverse Effects Associated With Pharmacological Treatment Based on the Common Terminology Criteria for Adverse Events &#40;Version 4&#46;0&#41; Issued by the National Cancer Institute&#46;</p>"
        ]
      ]
      7 => array:8 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
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            "identificador" => "at3"
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          "leyenda" => "<p id="spar0085" class="elsevierStyleSimplePara elsevierViewall">Abbreviations&#58; BRAF<span class="elsevierStyleSup">&#43;</span>&#44; patients with <span class="elsevierStyleItalic">BRAF</span> mutation&#59; BRAF-WT&#44; patients without <span class="elsevierStyleItalic">BRAF</span> mutation &#40;wild-type&#41;&#59; DCZ&#44; dacarbazine&#59; DFS&#44; disease-free survival&#59; T-VEC&#44; talimogene laherparepvec&#59; QT&#44; chemotherapy&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Study<a class="elsevierStyleCrossRef" href="#tblfn0015"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Drug&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Phase&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Population&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Patients&#44; No&#46;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Arms&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Response Rates&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">DFS&#44; mo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">Adverse Effects &#40;Grade &#8805;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Hodi et al&#46; &#40;2010&#41;<a class="elsevierStyleCrossRef" href="#bib0580"><span class="elsevierStyleSup">40</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Previously treated advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">676&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>vaccine gp100<br>Ipilimumab<br>Vaccine gp100&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 5&#37;<br>Ipilimumab&#58; 10&#46;9&#37;<br>Vaccine gp100&#58; 1&#46;5&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS combination&#58; 10<br>DFS ipilimumab&#58; 10&#46;1<br>DFS vaccine gp100&#58; 6&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab and combination&#58; 10&#37;-15&#37;<br>Vaccine gp100&#58; 3&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Topalian et al&#46; &#40;2012&#41;<a class="elsevierStyleCrossRef" href="#bib0620"><span class="elsevierStyleSup">48</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">104&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab as monotherapy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">28&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS<span class="elsevierStyleHsp" style=""></span>&#62;<span class="elsevierStyleHsp" style=""></span>11&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">14&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Robert et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0625"><span class="elsevierStyleSup">49</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Previously untreated advanced melanoma BRAF-WT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">418&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab<br>DCZ&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&#58; 40&#37;<br>DCZ&#58; 13&#46;9&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS&#58; 5&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&#58; 11&#46;7&#37;<br>DCZ&#58; 17&#46;6&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Weber et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0630"><span class="elsevierStyleSup">50</span></a><br>&#91;Checkmate-037&#93;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma after ipilimumab or anti-BRAF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">405&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab<br>QT<br>DCZ<br>Paclitaxel&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&#58; 31&#46;7&#37;<br>QT&#58; 10&#46;6&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS Nivolumab&#58; 4&#46;7<br>DFS QT&#58; 4&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Nivolumab&#58; 9&#37;<br>QT&#58; 31&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Hamid et al&#46; &#40;2013&#41;<a class="elsevierStyleCrossRef" href="#bib0640"><span class="elsevierStyleSup">52</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">135&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab as monotherapy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">38&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS<span class="elsevierStyleHsp" style=""></span>&#62;<span class="elsevierStyleHsp" style=""></span>7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">13&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Ribas et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0655"><span class="elsevierStyleSup">55</span></a><br>&#91;Keynote-002&#93;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">II&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma in patients resistant to ipilimumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">540&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab<br>0&#46;2<span class="elsevierStyleHsp" style=""></span>mg&#47;kg<br>0&#46;10<span class="elsevierStyleHsp" style=""></span>mg&#47;kg QT&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&#58; 21&#37; &#40;25&#37; 10<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41;<br>QT&#58; 4&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS pembrolizumab&#58; 5&#46;4 &#40;5&#46;8 in 10<span class="elsevierStyleHsp" style=""></span>mg&#47;kg arm&#41;<br>DFS QT&#58; 3&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&#58; 11&#37; &#40;14&#37; 10<span class="elsevierStyleHsp" style=""></span>mg&#47;kg&#41;<br>QT&#58; 26&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Robert et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0660"><span class="elsevierStyleSup">56</span></a><br>&#91;Keynote-006&#93;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">834&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab<br>Ipilimumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&#58; 33&#37;<br>Ipilimumab&#58; 12&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS pembrolizumab&#58; 5&#46;5<br>DFS ipilimumab&#58; 2&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Pembrolizumab&#58; 10&#37;<br>Ipilimumab&#58; 20&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Andtbacka et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0700"><span class="elsevierStyleSup">64</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">T-VEC&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">436&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Intralesional T-VEC<br>Subcutaneous GM-CSF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">T-VEC&#58; 26&#37;<br>GM-CSF&#58; 5&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DSF T-VEC&#58; 8&#46;2<br>DFS GM-CSF&#58; 2&#46;9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">T-VEC&#58; 36&#37; &#40;2&#37; grade<span class="elsevierStyleHsp" style=""></span>&#62;<span class="elsevierStyleHsp" style=""></span>3&#41;<br>GM-CSF&#58; 21&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Wolchok et al&#46; &#40;2013&#41;<a class="elsevierStyleCrossRef" href="#bib0715"><span class="elsevierStyleSup">67</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">53&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab<br>Sequential treatment&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 40&#37;<br>Sequential&#58; 20&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS combination &#62;<span class="elsevierStyleHsp" style=""></span>5<br>DFS sequential &#62;<span class="elsevierStyleHsp" style=""></span>2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 53&#37;<br>Sequential&#58; 18&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Postow et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0720"><span class="elsevierStyleSup">68</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Previously untreated advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">142&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab<br>Ipilimumab only&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 60&#37; &#40;22&#37; complete response&#41;<br>Ipilimumab&#58; 11&#37; &#40;partial response&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS combination<span class="elsevierStyleHsp" style=""></span>&#62;<span class="elsevierStyleHsp" style=""></span>11 &#40;study cutoff&#41; BRAF-WT&#47;8&#46;5 BRAF&#43;<br>DFS ipilimumab&#58; 4&#46;4 for BRAF-WT&#47;2&#46;7 for BRAF&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 54&#37;<br>Ipilimumab&#58; 24&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " align="left" valign="top">Larkin et al&#46; &#40;2015&#41;<a class="elsevierStyleCrossRef" href="#bib0725"><span class="elsevierStyleSup">69</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">III&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Previously untreated advanced melanoma&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">945&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Ipilimumab<span class="elsevierStyleHsp" style=""></span>&#43;<span class="elsevierStyleHsp" style=""></span>nivolumab<br>Ipilimumab<br>Nivolumab&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 57&#46;6&#37;<br>Ipilimumab&#58; 19&#37;<br>Nivolumab&#58; 43&#46;7&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">DFS combination&#58; 11&#46;9<br>DFS ipilimumab&#58; 2&#46;9<br>DFS Nivolumab&#58; 6&#46;9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="left" valign="top">Combination&#58; 55&#37;<br>Ipilimumab&#58; 27&#46;3&#37;<br>Nivolumab&#58; 16&#46;3&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
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      "titulo" => "References"
      "seccion" => array:1 [
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