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Manejo clínico" ] ] "contieneResumen" => array:2 [ "en" => true "es" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 773 "Ancho" => 1559 "Tamanyo" => 88031 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Classification of paradoxical psoriasiform reactions.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "R. Navarro, E. Daudén" "autores" => array:2 [ 0 => array:2 [ "nombre" => "R." "apellidos" => "Navarro" ] 1 => array:2 [ "nombre" => "E." 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Ruiz-Salas, M. Alegre, A. López-Ferrer, J.R. Garcés" "autores" => array:4 [ 0 => array:4 [ "nombre" => "V." "apellidos" => "Ruiz-Salas" "email" => array:1 [ 0 => "v.ruizsalas@hotmail.com" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "M." "apellidos" => "Alegre" ] 2 => array:2 [ "nombre" => "A." "apellidos" => "López-Ferrer" ] 3 => array:2 [ "nombre" => "J.R." "apellidos" => "Garcés" ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Servicio de Dermatología, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain" "identificador" => "aff0005" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "Vismodegib: revisión" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1331 "Ancho" => 2504 "Tamanyo" => 231622 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Activation of the Hedgehog (Hh) pathway.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Basal cell carcinoma (BCC) is the most common skin cancer with an estimated annual incidence of 0.1% to 0.5%.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> It accounts for 80% of nonmelanoma skin cancers.</p><p id="par0010" class="elsevierStylePara elsevierViewall">Several therapeutic alternatives are available, including electrocoagulation, curettage, cryotherapy, topical imiquimod, photodynamic therapy, surgery, and radiotherapy, according to type and site of the tumor and the characteristics of the patient. In some cases however, BCC is particularly aggressive and metastasis may result.<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> To date, the therapeutic recommendations for unresectable or metastatic tumors and those inaccessible to radiotherapy have included chemotherapy with platinum, 5-fluoroacyl, vincristine, etoposide, bleomycin, methotrexate, cyclophosphamide, or doxorubicin, either as single agents or in combination. If chemotherapy was contraindicated due to associated comorbidities or adverse effects, palliative or supportive therapy was to be applied. Although Pfeiffer et al.<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a> claimed that cisplatinum was the most effective chemotherapeutic agent, other authors have reported equally or more effective therapeutic options such as the combination of vincristine, bleomycin, and prednisolone.</p><p id="par0015" class="elsevierStylePara elsevierViewall">In the near future, another option for control of locally advanced tumors not amenable to surgery or radiotherapy may be vismodegib, an inhibitor of the Hedgehog (Hh) signaling pathway.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Hedgehog Signaling Pathway</span><p id="par0020" class="elsevierStylePara elsevierViewall">The first articles were published on the Hh pathway when the Patched (PTCH) receptor was identified during embryonic study of the fruit fly <span class="elsevierStyleItalic">Drosophila melanogaster.</span><a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a> The Hh pathway appears to be crucial for normal embryonic development of <span class="elsevierStyleItalic">Drosophila</span>, conditioning segmentary polarity and normal morphologic structure.</p><p id="par0025" class="elsevierStylePara elsevierViewall">Several years earlier, Binns et al.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> reported an epidemic of cyclopia in sheep that consisted of the development of congenital defects characterized by the absence of midline facial structures and failure of the prosencephalon to develop into 2 hemispheres (holoprosencephaly). The cause of this malformation was the intake during gestation of a plant of the lily family called <span class="elsevierStyleItalic">Veratrum californicum</span>, which contains an alkaloid steroid called cyclopamine.<a class="elsevierStyleCrossRefs" href="#bib0030"><span class="elsevierStyleSup">6,7</span></a> Years later, cyclopamine was shown to have a direct role as an inhibitor of the Hh pathway by directly blocking one of the components of this pathway called Smoothened (SMO).<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a> However, although this agent was very important for study of preclinical models of the Hh signaling pathway, its poor oral bioavailability and acid sensitivity required the development of other synthetic and semisynthetic derivatives that could be administered orally.<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">The Hh signaling pathway plays a crucial role in organogenesis during embryogenesis in many species, but in adults it is only active in hair follicles and stem cells, where it plays a major role in maintaining tissue homeostasis and cell repair.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> The mechanism for processing, secretion, and signaling of Hh proteins has been more or less conserved in the phylogenetic scale, although with some differences. <span class="elsevierStyleItalic">Drosophila</span> has a single Hh gene, whereas vertebrates have 3 homologous Hh ligands: Sonic (Sh), Desert (Dh), and Indian (Ih), with the first of these being the most well-known. Dh is implicated in the development of male germ cells and Ih is an important regulator of bone growth and cartilage development.<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">11</span></a> Sh is implicated in several activities such as establishing left-right symmetry and development of the central nervous system, eyes, and muscles. The receptor system of these proteins is the Patched 1 (PTCH1) transmembrane protein receptor and a transmembrane SMO protein, which belongs to the G protein coupled receptor family and acts as a mandatory signal transducer for the Hh pathway (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>). In the absence of a ligand, the PTCH1 receptor suppresses SMO activity; if it binds the ligand, SMO suppression is abolished resulting in modulation and activation of the GLI transcription factors that translocate to the nucleus with induction of transcription of genes such as GLI1,<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a> the main marker for the Hh signaling pathway. SMO activation requires 2 stages for activation in presence of Hh: phosphorylation of the C-terminal end by the AMPc-dependent protein kinase (PKA), casein kinase 1 (CK1), casein kinase 2 (CK2), and the G protein coupled receptor kinase 2 (GRK2), and their subsequent translocation to the cell membrane through cytoplasmic vesicles. In absence of Hh, several phosphatases can maintain low levels of SMO phosphorylation.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">Two signaling modes operate within the Hh pathway, the canonic and noncanonic pathways. The canonic Hh pathway regulates the activation of members of the GLI family of transcription factors. The noncanonic pathway is activated independently of the GLI proteins and in turn is subdivided into 2 signaling pathways, those that do not require SMO (type 1) and those that in addition to not requiring SMO also do not require GLI (type 2). In the canonic Hh signaling pathway, in absence of ligand, PTCH prevents activation of SMO and translocation to the membrane, whereas binding of Hh to the PTCH receptor results in internalization of the ligand-receptor complex and activation by phosphorylation and translocation of SMO. In vertebrates, signaling occurs in the primary cilia, regulating the processing and activation of the GLI protein. The primary cilia are immobile cilia that are present in most vertebrate cells and that comprise a protrusion from the membrane in the apical region of polarized cells. PTCH1 is present in abundance in primary cilia in absence of Hh and is eliminated when Hh is present.<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">13</span></a> The fundamental role of the canonic Hh pathway is induction of cell proliferation through induction of genes that encode cyclin D1 and N-myc.<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">14</span></a> The noncanonical pathway of type 1 PTCH1 regulates cell survival, such that overexpression of PTCH1 induces apoptosis, as has been observed in several <span class="elsevierStyleItalic">in vitro</span> and <span class="elsevierStyleItalic">ex vivo</span> assays.<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a> In vertebrates, the 3 Hh ligands have an antiapoptotic effect on culture cells, and this effect is not blocked by SMO antagonists. In this signaling pathway, regulation of the cell cycle is achieved through modulation of the subcellular localization of cyclin B1. Binding of Sh to PTCH prevents PTCH from interacting with cyclin B1, giving rise to an increase in cell proliferation and cell survival.<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">13</span></a> In the type 2 canonic SMO-dependent signaling pathway, SMO regulates cytoskeletal actin through GTPases, inducing migration processes, tubulogenesis, and dendritic spine and axon formation in neurones.<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">13</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">As mentioned above, the Hh pathway is normally inactive during adult life and only remains functional in stem cells, skin, and hair follicles. <span class="elsevierStyleItalic">In vitro</span> and <span class="elsevierStyleItalic">in vivo</span> studies have shown how aberrant reactivation of the Hh pathway can activate genes that promote cell proliferation, giving rise to several types of tumors such as medulloblastomas; rabdomyosarcoma; melanoma; pancreatic, breast, lung, liver, and stomach cancer; and BCC.<a class="elsevierStyleCrossRefs" href="#bib0080"><span class="elsevierStyleSup">16,17</span></a> Therefore, inhibition of the GLI transcription factors has been proposed as an emerging therapeutic approach with promise in several types of tumors.</p><p id="par0045" class="elsevierStylePara elsevierViewall">There are basically 2 mechanisms by which an increase in the activation of the Hh pathway occurs. In one of these, there is an increase in the expression of Hh bound proteins, which directly leads to increased signaling. In the other, genetic changes in <span class="elsevierStyleItalic">PTCH1</span> and <span class="elsevierStyleItalic">SMO</span> give rise to constitutively active receptors that also lead to an increase in signal transduction by this pathway.</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Molecular Alterations in Basal Cell Carcinoma</span><p id="par0050" class="elsevierStylePara elsevierViewall">The Hh signaling pathway is constitutively activated in BCC.<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">18,19</span></a> Mutations have been found in the proteins that regulate the Hh pathway independently of the presence of the Hh ligand, whereas in other human tumors such as ovarian or colorectal cancer, carcinogenesis is activated by an increase in the expression of the Hh ligand in tumor cells, which in turn act on stromal cells through paracrine signaling mechanisms. Mutations in the <span class="elsevierStyleItalic">PTCH1</span> gene in BCC were identified by studying patients with basal cell nevus syndrome (BNS) or Gorlin syndrome, a hereditary disease in which patients present with multiple BCCs and developmental disorders. <span class="elsevierStyleItalic">PTCH1</span> mutations have been identified in most of the exons of the gene in patients with BNS and sporadic BCC. In the study conducted by Aszterbaum et al.,<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">20</span></a> 23 exons from 86 samples of DNA from patients with BNS, 26 from patients with sporadic BCC, and 7 from patients with BNS-associated BCC were analyzed. Of the 26 sporadic BCC analyzed, 11 showed loss of heterozygosity in one or more of the polymorphism markers studied. This suggests that <span class="elsevierStyleItalic">PTCH1</span> acts as a classic suppressor gene, requiring mutation in 2 alleles to activate tumorigenesis.</p><p id="par0055" class="elsevierStylePara elsevierViewall">In the case of acquired BCC, these mutations in both alleles arise due to postnatal insults, such as exposure to UV light, radiotherapy, chemical carcinogenesis, or random genetic mutations. In contrast, patients with BNS have a greater susceptibility to tumorigenesis, as one of the mutations is inherited through the germ line and so loss of heterozygosity occurs after only one acquired mutation. <span class="elsevierStyleItalic">PTCH</span> mutations were detected in 3 tumors, each one in a different exon of the gene. The mutation led to amino acid substitution in one case, the appearance of a stop codon in another, and a frameshift in the third. These mutations are not usually those associated with exposure to sunlight or induced by UV.</p><p id="par0060" class="elsevierStylePara elsevierViewall">In the case of patients with BNS, mutations were identified in 8 exons in 13 of the 86 patients. The mutations most frequently found corresponded to frameshifts, resulting in gene products with premature chain termination.</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Smoothened Mutations</span><p id="par0065" class="elsevierStylePara elsevierViewall">According to the model proposed for inhibition of SMO by PTCH in the presence of Sh, SMO can only be in its active form in the absence of Sh. In contrast, in patients with sporadic BCC, investigators have identified activating missense somatic mutations in the SMO gene which cause SMO to act as an oncogene. In order to investigate the oncogenic potential of SMO, Xie et al.<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">19</span></a> found that overexpression of mutated SMO in the epidermis of transgenic mice gave rise to the formation of epidermal disorders similar those in BCC, with a similar phenotype to those obtained in transgenic mice that express wild type Sh.<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">21</span></a></p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Mutations in the p53 Gene</span><p id="par0070" class="elsevierStylePara elsevierViewall">In addition to <span class="elsevierStyleItalic">PTCH</span> mutations, <span class="elsevierStyleItalic">p53</span> mutations are common in BCC. Ling et al.<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">22</span></a> studied microdissected samples from tumor and adjacent healthy skin by polymerase chain reaction and sequencing. They found allele loss from the <span class="elsevierStyleItalic">PTCH</span> locus in 6 of 8 samples from sporadic BCC and 17 of 19 samples from hereditary BCC, whereas <span class="elsevierStyleItalic">p53</span> mutations were found in all cases of sporadic disease and only in 7 of 20 hereditary cases. In the cases of hereditary BCC, <span class="elsevierStyleItalic">p53</span> mutations included single nucleotide deletions and unusual double-base substitutions compared with the pattern of missense mutations induced by UV light in sporadic cases. The high frequency of both mutations and their coexistence suggests that genetic mutations in the <span class="elsevierStyleItalic">PTCH</span> and <span class="elsevierStyleItalic">p53</span> genes are important for the development of BCC.</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Molecular Expression Pattern in Basal Cell Carcinoma</span><p id="par0075" class="elsevierStylePara elsevierViewall">In the analysis of the genetic expression profile of BCC performed by Bonifas et al.,<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">23</span></a> BCC expresses high levels <span class="elsevierStyleItalic">PTCH1</span>, <span class="elsevierStyleItalic">GLI1</span>, <span class="elsevierStyleItalic">HIP</span>, <span class="elsevierStyleItalic">WNT2B</span>, and <span class="elsevierStyleItalic">WNT5a</span> mRNA and low levels of <span class="elsevierStyleItalic">c-Myc</span>, <span class="elsevierStyleItalic">c-fos</span>, and <span class="elsevierStyleItalic">WNT4</span> mRNA compared to normal skin. These alterations suggest that mutations in the Hh pathway play a fundamental role in BCC carcinogenesis. PTCH1, GLI1, and HIP appear to be the most extensively expressed in this type of tumor. The <span class="elsevierStyleItalic">HIP</span> gene encodes a protein able to bind to Sh with an avidity similar to that of PTCH1, such that high levels of mRNA in BCC indicate that the function of this protein could be essential for Hh signaling in humans.</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Clinical Trials With Vismodegib</span><p id="par0080" class="elsevierStylePara elsevierViewall">Vismodegib (GDC-0449) was the first drug approved by the Food and Drug Administration (FDA) for the treatment of locally advanced BCC ineligible for surgery or radiotherapy and for metastatic BCC (Erivedge, Genentech, January 2012). This molecule is a 2-aryl pyridine that inhibits the Hh pathway by blocking activation of SMO.<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a></p><p id="par0085" class="elsevierStylePara elsevierViewall">To date, 1 phase I and 2 phase II trials have been published of vismodegib in patients with advanced and/or metastatic BCC (<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>).</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Phase I Clinical Trial</span><p id="par0090" class="elsevierStylePara elsevierViewall">Von Hoff et al.<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">24</span></a> conducted a 2-stage phase I trial that assessed the safety and tolerability of vismodegib in 68 patients, 33 of whom had advanced (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>15) or metastatic (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>18) BCC. In the first stage, which aimed to determine the maximum tolerated dose, 20 patients were evaluated at 3 different doses. They received the drug on Day 1, then had a washout period of 6 days before receiving the same dose from Day 8. Seven patients received 150 <span class="elsevierStyleHsp" style=""></span>mg/d, 9 received 270 <span class="elsevierStyleHsp" style=""></span>mg/d, and 4 received 540 <span class="elsevierStyleHsp" style=""></span>mg/d. No dose-limiting toxicities were reported. Three of the 20 patients had BCC and each received 3 different doses of vismodegib (150, 270, and 540<span class="elsevierStyleHsp" style=""></span>mg). In stage 2, the aim was to obtain additional information on pharmacokinetics, pharmacodynamics, and safety. A further 48 patients were recruited, 30 of whom had BCC: 16 patients received 150<span class="elsevierStyleHsp" style=""></span>mg/d and 14 received 270<span class="elsevierStyleHsp" style=""></span>mg/d. Follow-up was every 4 weeks and involved a physical examination, electrocardiogram, biochemistry, and hematology. For those patients with radiologically assessable disease (above all in metastatic BCC), the tumor assessment was based on response evaluation criteria in solid tumors (RECIST) (version 1.0). For patients with radiologically nonassessable disease, follow-up involved physical examination, such that complete response was considered as disappearance of the palpable or visible tumor, and a partial response as a reduction of more than 50% in the palpable or visible tumor diameter. Of the 18 patients with metastatic BCC, 9 achieved partial response, 7 had stable disease, and 2 had tumor progression. The overall response rate for patients with metastatic BCC was 50%. Of the 15 patients with locally advanced BCC, 2 achieved complete response, 7 achieved partial response, 4 had stable disease, and 2 had tumor progression. The overall response rate in this group of patients was 60%. The most frequently observed adverse effects, all grade 2 to 3, were muscle cramps, dysgeusia, anorexia, and weight loss. The dose established as the most appropriate was 150<span class="elsevierStyleHsp" style=""></span>mg/d, as no increases were observed in plasma concentration in parallel with and proportional to increases in the orally administered dose. Vismodegib undergoes minimal metabolism and more than 98% of the drug is eliminated unchanged by the biliary route (82% is recovered in feces and 4.4% in urine). Results from in vivo studies suggest that the drug acts as an inhibitor of the CYP2C8, CYP2C9, and CYP2C19 cytochromes and BRCP (breast cancer resistance protein). The adverse effects may be increased if the drug is administered concomitantly with other drugs that inhibit P-glycoprotein, such as clarithromycin, erythromycin, and azithromycin. The estimated half-life of vismodegib is 12 days after a single dose and 4 days after continuous daily administration.</p></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Phase II Clinical Trials</span><p id="par0095" class="elsevierStylePara elsevierViewall">Sekulic et al.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">25</span></a> conducted a phase II clinical trial that formed the basis for approval by the FDA. They enrolled 104 patients with metastatic BCC (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>33) and locally advanced BCC (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>71). Of these, 8 were excluded from the trial because the pathologist could not detect BCC in the initial biopsy. All patients received vismodegib at a dose of 150<span class="elsevierStyleHsp" style=""></span>mg/d until tumor progression was observed or severe pharmacologic toxicity occurred. The primary efficacy outcome measure was response rate. For patients with metastatic BCC, the RECIST guidelines were used (version 1.07) whereas for patients with locally advanced BCC, response was defined as a decrease of 30% or more in tumor size or complete disappearance. Progressive disease was defined as an increase of 20% or more in the size of the visible tumor or radiologically measured tumor, the appearance of a new ulceration, or new lesions. For patients with multiple lesions, the sum of the largest diameters was used to determine response and progression. In the group with metastatic BCC (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>33), 10 patients attained partial responses (30.3%) and there were no complete responses. The mean duration of objective response in this group of patients was 7.6 months. In the group with locally advanced BCC (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>63), 13 patients attained complete response (20.6%) and 14 had partial responses (22.2%). The overall response rate in this group of patients was 43%. The mean duration of response was 7.6 months. In addition, in 34 of the 63 patients (54%), no residual BCC was observed in subsequent biopsies. The most frequently observed adverse effects, all grade 2 or 3, were muscle cramps, weight loss, fatigue, and loss of appetite. The most serious adverse effects were observed in 7 patients (one with metastatic BCC and the rest with locally advanced BCC): 3 deaths of unknown cause, myocardial infarction, meningeal disease, and cerebrovascular accident. The relationship between deaths and the drug is not known at present. At a molecular level, increased expression of the genes that code for factor GLI1 and patched homologous receptor 2 (<span class="elsevierStyleItalic">PTCH2</span>) genes was noted and confirmed in skin tumor biopsies prior to treatment with vismodegib, compared with biopsies of healthy skin from other subjects.</p><p id="par0100" class="elsevierStylePara elsevierViewall">The other phase II clinical trial was published by Tang et al.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">26</span></a> This study was a randomized, double-blind, placebo-controlled study that aimed to investigate the efficacy of vismodegib in patients with Gorlin syndrome. The study enrolled 42 patients with this syndrome who were randomized 2:1 to receive oral vismodegib at a dose of 150<span class="elsevierStyleHsp" style=""></span>mg/d (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>26) or placebo (n<span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>15) for a period of 18 months. The primary efficacy outcome measure was the comparative rate of new BCC eligible for surgical resection (those with a diameter ≥<span class="elsevierStyleHsp" style=""></span>3<span class="elsevierStyleHsp" style=""></span>mm on the nose or periorbital area, ≥<span class="elsevierStyleHsp" style=""></span>5<span class="elsevierStyleHsp" style=""></span>mm on any part of the face, or ≥<span class="elsevierStyleHsp" style=""></span>9<span class="elsevierStyleHsp" style=""></span>mm on the trunk and thighs). The secondary efficacy outcome measures were decrease in the rate of appearance of small BCC (≤<span class="elsevierStyleHsp" style=""></span>5<span class="elsevierStyleHsp" style=""></span>mm) on the upper third of the back, decreased size of surgery-eligible BCC, effect duration on BCC after discontinuation of the drug, and changes in expression of the <span class="elsevierStyleItalic">Hh</span> gen in BCC. Clinical follow-up was performed monthly for the first 9 months and then every 3 months for the remaining 9 months. Only 38 patients completed the scheduled study visits in the first 3 months. In addition, molecular studies were undertaken to assess the degree of inhibition of the Hh pathway through analysis of levels of mRNA encoding GLI1 in skin biopsies performed at baseline and within 1 month of initiating vismodegib. A decrease was observed in the appearance of new BCC eligible for surgery in the vismodegib group compared to placebo (2 vs 29 new BCC per year, <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>.001). Vismodegib also reduced the size of existing tumors, expressed as a percentage of change in the sum of largest diameters (–65% vs –11%, <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>.003). Patients in the vismodegib group underwent fewer surgical procedures compared to the placebo group (mean number of procedures per patient 0.31 vs 4.4 for placebo, <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>.001). Almost all tumors responded to vismodegib, with almost complete clinical remission in some patients. In skin biopsy and molecular studies, among the patients who received vismodegib for the first 3 months, 46% of the biopsies showed presence of residual tumor, and among the lesions that appeared clinically resolved, presence of residual tumor was seen in only 17%. At a molecular level, the effect of vismodegib was also associated with a decrease in Hh signaling, with a decrease of up to 90% in expression of GLI1 mRNA in biopsies performed after 1 month of treatment and a reduction in tumor proliferation, assessed through expression of Ki67. However, the authors reported no changes in cell apoptosis, assessed by measurement of caspase 3. The most frequently observed adverse effects, all grade 1 to 3, were dysgeusia, muscle cramps, alopecia, and weight loss. No serious adverse effects were reported. After 8 months of treatment, 7 of the 26 patients (27%) who received the drug discontinued therapy due to adverse effects. These resolved between 1 and 3 months later.</p></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Vismodegib in Special Situations</span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Vismodegib and Gestation</span><p id="par0105" class="elsevierStylePara elsevierViewall">Vismodegib is considered a category D drug by the FDA. In studies with rats, teratogenicity was observed at 20% of the daily recommended dose for humans. Effects included the appearance of craniofacial defects, open perineum, and digital fusions.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">27</span></a></p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Vismodegib in Children</span><p id="par0110" class="elsevierStylePara elsevierViewall">The efficacy and safety of vismodegib in human children have not been studied. In animal studies, different abnormalities were observed at doses of 20% to 40% of the recommended adult dose, with the appearance of early epiphyseal closure and dental abnormalties.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">27</span></a></p></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Vismodegib in Elderly Patients</span><p id="par0115" class="elsevierStylePara elsevierViewall">To date, not enough patients aged ≥<span class="elsevierStyleHsp" style=""></span>65 years have been included in clinical trials to assess whether differences in terms of pharmacokinetics, safety, and efficacy are present in elderly patients. Because most metastatic and/or locally advanced BCCs occur in eldery patients, more postmarketing studies should be performed to provide data in these patients.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">28</span></a></p></span></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Mechanisms of Resistance to Vismodegib</span><p id="par0120" class="elsevierStylePara elsevierViewall">The topic of acquired resistance to drugs is particularly pertinent in the case of kinase inhibitors. Soon after the recent introduction of vismodegib as an inhibitor of the Hh signaling pathway, the first report of resistance to the therapeutic group targeting the SMO receptor was published.<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a> The concept has been extended to cover the phenomenon of acquired resistance to drugs targeting molecules related to the G-protein coupled receptor. Rudin et al.<a class="elsevierStyleCrossRef" href="#bib0150"><span class="elsevierStyleSup">30</span></a> published the first case of medulloblastoma treated with vismodegib. Good initial response was attained although loss of efficacy occurred after 3 months. The patient was a 26-year-old man with metastatic medulloblastoma who started treatment with vismodegib at a dose of 150<span class="elsevierStyleHsp" style=""></span>mg/d. He achieved a rapid and notable initial tumor regression; molecular analysis of the primary tumor and metastases prior to treatment revealed the existence of a mutation in PTCH1 (PTCH1-W844C), as well as overregulation of different genes implicated in the Hh pathway, thereby confirming the premise that the disease was induced by hyperactivation of this signaling pathway. Subsequently, Yauch et al.<a class="elsevierStyleCrossRef" href="#bib0155"><span class="elsevierStyleSup">31</span></a> attempted to elucidate the nature of the resistance mechanism in this patient. They collected a biopsy of the tumor lesion and identified, through genetic sequencing, a heterozygous missense mutation at position 1497 of SMO corresponding to switching aspartic acid (Asp) for histidine (His) in codon 473 (D473H). This mutation was not detected in pretreatment biopsies, although it may have been present at levels below the limit of detection. In turn, Dijkgraaf et al.,<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a> in in vitro studies, found a new mutation in SMO through induction of mutations in regions of SMO important for interaction with vismodegib. Most of the 21 new mutations that showed deficiency for vismodegib binding were inactive in terms of signaling, and were not expressed on the cell surface. However, mutation SMO-E518A showed substantial activity and partial resistance to the presence of 1<span class="elsevierStyleHsp" style=""></span>μmol/L of vismodegib. One way of approaching resistance generated by specific mutations is the development of second-generation inhibitors that conserve activity in the presence of mutations. This approach has been used successfully in the case of resistance to drugs targeting epidermal growth factor receptor (EGFR). An example is nilotinib, a second-generation inhibitor that showed clinical activity in patients with chronic myeloid leukemia resistant to imatinib.<a class="elsevierStyleCrossRef" href="#bib0165"><span class="elsevierStyleSup">33</span></a> A valid alternative could be the use of antagonists of the Hh signaling pathway with a different mechanism of action to vismodegib. For example, it has recently been found that itraconazole inhibits the Hh pathway through a mechanism other than the cyclopamine mechanism, although the details have not yet been elucidated.<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">34</span></a> The use of antagonists of the Hh pathway with targets other than SMO, such as GANT61, which blocks GLI function, could be considered as a strategy in the context of resistance to vismodegib.<a class="elsevierStyleCrossRef" href="#bib0175"><span class="elsevierStyleSup">35</span></a></p></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Use of Vismodegib in Other Tumors</span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Hedgehog Signaling Pathway Alteration in Other Tumors</span><p id="par0125" class="elsevierStylePara elsevierViewall">An aberrant Hh signaling pathway can trigger the initiation, proliferation, and propagation of different types of cancer through activation of a ligand-dependent or ligand-independent pathway. In the ligand-independent pathway, genetic mutations in different components of the Hh pathway, such as mutations that lead to loss of PTCH or SUFU function or increased activity of SMO, and missense mutations in GLI1 and GLI3, favor tumor cell survival and growth, as observed in the case of BCC and medulloblastoma. The ligand-dependent pathway may be autocrine if the Hh ligand produced by the tumor cell acts on neighboring cells to stimulate propagation and survival, or paracrine when the Hh ligand secreted by the epithelium stimulates the underlying stroma to propagate proliferation and malignant transformation. Autocrine signaling has been observed in cases of lung cancer, pancreatic cancer, and prostate cancer, whereas the paracrine pathway has been isolated in cases of ovarian and colorectal cancer.<a class="elsevierStyleCrossRef" href="#bib0180"><span class="elsevierStyleSup">36</span></a> Moreover, tumorigenic transition is influenced by the stage of the neoplastic process in which the Hh signaling variant intervenes. For example, in cases of BCC and medulloblastoma, alteration of the Hh pathway is important for initiating tumor formation and maintenance. In cases of colon cancer and pancreatic cancer, Hh alteration is important for tumor maintenance, but not for tumor formation. In other types of cancers, such as breast, ovarian, prostate, and lung cancer, it is known that this pathway is implicated, but the exact role has not been elucidated.<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">37</span></a> Specifically, in cases of pancreatic, ovarian, and colon cancers, and leukemia, different clinical trials are in progress to assess the efficacy of vismodegib alone or in combination with other chemotherapeutic regimens.</p></span></span><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Conclusion</span><p id="par0130" class="elsevierStylePara elsevierViewall">In the last decade, substantial progress has been made in the understanding of the functions and mechanisms of action of Hh protein in the development of cancer. Although not all mechanisms of the Hh signaling pathway have been fully studied, it is evident that an aberrant Hh pathway favors tumor growth and proliferation, making it more aggressive and more likely to metastasize. Inhibition of the Hh pathway is, therefore, a new, promising, and selective approach for treatment of certain types of advanced malignant neoplasms, such as BCC and medulloblastoma. Initial clinical trials performed with the oral SMO antagonist GDC-0449, show good efficacy and safety in BCC and in medulloblastoma. Preliminary studies have laid the foundations for the use of these inhibitors in other types of cancers. In some cases, clinical trials have been published with promising results. However, more experience is needed to truly assess their long-term efficacy, administration time, and the possible appearance of new adverse effects.</p></span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Ethical Responsibilities</span><span id="sec0095" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Protection of human and animal subjects</span><p id="par0135" class="elsevierStylePara elsevierViewall">The authors declare that no experiments were performed on humans or animals for this investigation.</p></span><span id="sec0100" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Confidentiality of data</span><p id="par0140" class="elsevierStylePara elsevierViewall">The authors declare that they have followed their hospital's protocol on the publication of data concerning patients and that all patients included in the study have received sufficient information and have given their written informed consent to participate in the study.</p></span><span id="sec0105" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0125">Right to privacy and informed consent</span><p id="par0145" class="elsevierStylePara elsevierViewall">The authors declare that patient data do not appear in this article.</p></span></span><span id="sec0110" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0130">Conflicts of Interest</span><p id="par0150" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:20 [ 0 => array:2 [ "identificador" => "xres372206" "titulo" => "Abstract" ] 1 => array:2 [ "identificador" => "xpalclavsec351326" "titulo" => "Keywords" ] 2 => array:2 [ "identificador" => "xres372205" "titulo" => "Resumen" ] 3 => array:2 [ "identificador" => "xpalclavsec351327" "titulo" => "Palabras clave" ] 4 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 5 => array:2 [ "identificador" => "sec0010" "titulo" => "Hedgehog Signaling Pathway" ] 6 => array:2 [ "identificador" => "sec0015" "titulo" => "Molecular Alterations in Basal Cell Carcinoma" ] 7 => array:2 [ "identificador" => "sec0020" "titulo" => "Smoothened Mutations" ] 8 => array:2 [ "identificador" => "sec0025" "titulo" => "Mutations in the p53 Gene" ] 9 => array:2 [ "identificador" => "sec0030" "titulo" => "Molecular Expression Pattern in Basal Cell Carcinoma" ] 10 => array:2 [ "identificador" => "sec0035" "titulo" => "Clinical Trials With Vismodegib" ] 11 => array:2 [ "identificador" => "sec0040" "titulo" => "Phase I Clinical Trial" ] 12 => array:2 [ "identificador" => "sec0045" "titulo" => "Phase II Clinical Trials" ] 13 => array:3 [ "identificador" => "sec0050" "titulo" => "Vismodegib in Special Situations" "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0055" "titulo" => "Vismodegib and Gestation" ] 1 => array:2 [ "identificador" => "sec0060" "titulo" => "Vismodegib in Children" ] 2 => array:2 [ "identificador" => "sec0065" "titulo" => "Vismodegib in Elderly Patients" ] ] ] 14 => array:2 [ "identificador" => "sec0070" "titulo" => "Mechanisms of Resistance to Vismodegib" ] 15 => array:3 [ "identificador" => "sec0075" "titulo" => "Use of Vismodegib in Other Tumors" "secciones" => array:1 [ 0 => array:2 [ "identificador" => "sec0080" "titulo" => "Hedgehog Signaling Pathway Alteration in Other Tumors" ] ] ] 16 => array:2 [ "identificador" => "sec0085" "titulo" => "Conclusion" ] 17 => array:3 [ "identificador" => "sec0090" "titulo" => "Ethical Responsibilities" "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0095" "titulo" => "Protection of human and animal subjects" ] 1 => array:2 [ "identificador" => "sec0100" "titulo" => "Confidentiality of data" ] 2 => array:2 [ "identificador" => "sec0105" "titulo" => "Right to privacy and informed consent" ] ] ] 18 => array:2 [ "identificador" => "sec0110" "titulo" => "Conflicts of Interest" ] 19 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2013-04-20" "fechaAceptado" => "2013-09-28" "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec351326" "palabras" => array:3 [ 0 => "Vismodegib" 1 => "Basal cell carcinoma" 2 => "Hedgehog pathway" ] ] ] "es" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palabras clave" "identificador" => "xpalclavsec351327" "palabras" => array:3 [ 0 => "Vismodegib" 1 => "Carcinoma basocelular" 2 => "Vía Hedgehog" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:2 [ "titulo" => "Abstract" "resumen" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">In January 2012, vismodegib (Erivedge, manufactured by Genentech) became the first selective inhibitor of the Hedgehog signaling pathway to be approved by the US Food and Drug Administration for the treatment of locally advanced and metastatic basal cell carcinoma. The drug selectively binds to Smoothened, a 7-helix transmembrane receptor, thereby inhibiting activation of transcription factors of the glioma-associated oncogene family and suppressing tumor proliferation and growth. Studies published to date have assessed the efficacy of vismodegib according to clinical and radiologic outcomes but little information is available on the molecular mechanisms underpinning the proven clinical efficacy of the drug. This review will cover recent data on the Hedgehog signaling pathway and data from clinical trials with vismodegib in the treatment of basal cell carcinoma, and will consider its use in other types of tumor.</p>" ] "es" => array:2 [ "titulo" => "Resumen" "resumen" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Vismodegib es el primer inhibidor selectivo de la vía de señalización Hedgehog que ha sido aprobado por la <span class="elsevierStyleItalic">Food and Drug Administration</span> (FDA) en EE. UU. para el tratamiento del carcinoma basocelular localmente avanzado y metastásico (Erivedge, Genentech, enero de 2012). Este fármaco se une e inactiva específicamente el receptor de transmembrana-7 Smoothened (SMO), frenando la activación de la familia de factores de transcripción del oncogén asociado a glioma (GLI), suprimiendo la proliferación y el crecimiento tumoral. Los estudios publicados hasta la fecha evalúan la eficacia de vismodegib basándose en criterios clínicos y radiológicos, pero disponemos de escasa información respecto a las bases moleculares que justifican la eficacia clínica probada del fármaco. Esta revisión intenta proporcionar datos actuales respecto a la vía de señalización Hedgehog, datos sobre los ensayos clínicos realizados con vismodegib en el tratamiento del carcinoma basocelular y su uso en otro tipo de tumores.</p>" ] ] "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: Ruiz V, Alegre M, López-Ferrer A, Garcés JR. Vismodegib: revisión. Actas Dermosifiliogr. 2014;105:744–751.</p>" ] ] "multimedia" => array:2 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1331 "Ancho" => 2504 "Tamanyo" => 231622 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Activation of the Hedgehog (Hh) pathway.</p>" ] ] 1 => array:7 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:2 [ "leyenda" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Abbreviations: CR, complete response; LA, locally advanced; M, metastasis; P, tumor progression; PR, partial response; SD, stable disease.</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"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Authors \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Clinical Phase \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">N Patients With BCC \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " colspan="5" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Response</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " colspan="2" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Response Rate</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">LA \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">M \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">CR \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">PR \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">SD \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">P \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">LA \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">M \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Von Hoff et al.<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">24</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">I \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">15 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">18 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2 (LA) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">9 (M)<span class="elsevierStyleHsp" style=""></span>+<span class="elsevierStyleHsp" style=""></span>7 (LA) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">7 (M)<span class="elsevierStyleHsp" style=""></span>+<span class="elsevierStyleHsp" style=""></span>4 (LA) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2 (M)<span class="elsevierStyleHsp" style=""></span>+<span class="elsevierStyleHsp" style=""></span>2 (LA) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">60% \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">50% \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Sekulic et al.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">25</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">II \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">71 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">33 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">13 (LA) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">14 (LA)<span class="elsevierStyleHsp" style=""></span>+<span class="elsevierStyleHsp" style=""></span>10 (M) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">43% \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">30.3% \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Tang et al.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">26</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">II \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">42 patients with Gorlin syndrome \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="7" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Reduction in no. BCC (2 vs 29) and less surgery (0.31 vs 4.4)</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab562538.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Summary of Clinical Trials with Vismodegib.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:37 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Basal cell carcinoma" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "A.I. Rubin" 1 => "E.H. Chen" 2 => "D. 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año/Mes | Html | Total | |
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2024 Noviembre | 3 | 7 | 10 |
2024 Octubre | 94 | 35 | 129 |
2024 Septiembre | 94 | 45 | 139 |
2024 Agosto | 124 | 77 | 201 |
2024 Julio | 111 | 33 | 144 |
2024 Junio | 96 | 41 | 137 |
2024 Mayo | 75 | 37 | 112 |
2024 Abril | 89 | 21 | 110 |
2024 Marzo | 115 | 29 | 144 |
2024 Febrero | 105 | 36 | 141 |
2024 Enero | 145 | 42 | 187 |
2023 Diciembre | 79 | 19 | 98 |
2023 Noviembre | 90 | 41 | 131 |
2023 Octubre | 124 | 36 | 160 |
2023 Septiembre | 90 | 25 | 115 |
2023 Agosto | 61 | 20 | 81 |
2023 Julio | 68 | 42 | 110 |
2023 Junio | 73 | 28 | 101 |
2023 Mayo | 83 | 31 | 114 |
2023 Abril | 66 | 15 | 81 |
2023 Marzo | 68 | 32 | 100 |
2023 Febrero | 48 | 28 | 76 |
2023 Enero | 50 | 48 | 98 |
2022 Diciembre | 60 | 38 | 98 |
2022 Noviembre | 57 | 35 | 92 |
2022 Octubre | 30 | 41 | 71 |
2022 Septiembre | 30 | 44 | 74 |
2022 Agosto | 34 | 50 | 84 |
2022 Julio | 33 | 33 | 66 |
2022 Junio | 34 | 35 | 69 |
2022 Mayo | 61 | 33 | 94 |
2022 Abril | 64 | 62 | 126 |
2022 Marzo | 43 | 55 | 98 |
2022 Febrero | 44 | 30 | 74 |
2022 Enero | 41 | 44 | 85 |
2021 Diciembre | 30 | 35 | 65 |
2021 Noviembre | 43 | 50 | 93 |
2021 Octubre | 52 | 66 | 118 |
2021 Septiembre | 30 | 46 | 76 |
2021 Agosto | 42 | 24 | 66 |
2021 Julio | 24 | 31 | 55 |
2021 Junio | 36 | 30 | 66 |
2021 Mayo | 45 | 27 | 72 |
2021 Abril | 42 | 31 | 73 |
2021 Marzo | 37 | 19 | 56 |
2021 Febrero | 91 | 31 | 122 |
2021 Enero | 33 | 19 | 52 |
2020 Diciembre | 31 | 19 | 50 |
2020 Noviembre | 23 | 20 | 43 |
2020 Octubre | 35 | 12 | 47 |
2020 Septiembre | 20 | 19 | 39 |
2020 Agosto | 20 | 21 | 41 |
2020 Julio | 29 | 15 | 44 |
2020 Junio | 37 | 23 | 60 |
2020 Mayo | 27 | 15 | 42 |
2020 Abril | 28 | 23 | 51 |
2020 Marzo | 32 | 13 | 45 |
2020 Febrero | 8 | 6 | 14 |
2020 Enero | 0 | 2 | 2 |
2019 Diciembre | 4 | 8 | 12 |
2019 Noviembre | 0 | 4 | 4 |
2019 Septiembre | 4 | 2 | 6 |
2019 Agosto | 3 | 6 | 9 |
2019 Julio | 0 | 4 | 4 |
2019 Junio | 2 | 17 | 19 |
2019 Mayo | 0 | 9 | 9 |
2019 Abril | 0 | 10 | 10 |
2019 Marzo | 2 | 8 | 10 |
2019 Febrero | 0 | 1 | 1 |
2019 Enero | 2 | 4 | 6 |
2018 Diciembre | 1 | 5 | 6 |
2018 Noviembre | 2 | 3 | 5 |
2018 Octubre | 2 | 0 | 2 |
2018 Septiembre | 3 | 0 | 3 |
2018 Agosto | 0 | 2 | 2 |
2018 Julio | 0 | 5 | 5 |
2018 Mayo | 0 | 8 | 8 |
2018 Abril | 0 | 2 | 2 |
2018 Marzo | 0 | 3 | 3 |
2018 Febrero | 25 | 10 | 35 |
2018 Enero | 41 | 10 | 51 |
2017 Diciembre | 25 | 14 | 39 |
2017 Noviembre | 31 | 12 | 43 |
2017 Octubre | 28 | 15 | 43 |
2017 Septiembre | 19 | 10 | 29 |
2017 Agosto | 29 | 30 | 59 |
2017 Julio | 15 | 12 | 27 |
2017 Junio | 31 | 27 | 58 |
2017 Mayo | 28 | 33 | 61 |
2017 Abril | 21 | 11 | 32 |
2017 Marzo | 22 | 34 | 56 |
2017 Febrero | 14 | 8 | 22 |
2017 Enero | 29 | 15 | 44 |
2016 Diciembre | 25 | 15 | 40 |
2016 Noviembre | 37 | 14 | 51 |
2016 Octubre | 35 | 20 | 55 |
2016 Septiembre | 2 | 11 | 13 |
2016 Agosto | 0 | 3 | 3 |
2016 Julio | 13 | 3 | 16 |
2016 Junio | 21 | 1 | 22 |
2016 Mayo | 17 | 1 | 18 |
2016 Abril | 8 | 2 | 10 |
2016 Marzo | 14 | 1 | 15 |
2016 Febrero | 15 | 4 | 19 |
2016 Enero | 15 | 4 | 19 |
2015 Diciembre | 18 | 1 | 19 |
2015 Noviembre | 12 | 16 | 28 |
2015 Octubre | 13 | 2 | 15 |
2015 Septiembre | 6 | 2 | 8 |
2015 Agosto | 6 | 2 | 8 |
2015 Julio | 20 | 8 | 28 |
2015 Junio | 30 | 11 | 41 |
2015 Mayo | 24 | 13 | 37 |
2015 Abril | 10 | 8 | 18 |
2015 Marzo | 25 | 9 | 34 |
2015 Febrero | 14 | 10 | 24 |
2015 Enero | 9 | 8 | 17 |
2014 Diciembre | 11 | 7 | 18 |
2014 Noviembre | 10 | 7 | 17 |
2014 Octubre | 29 | 12 | 41 |