RESUMEN
BACKGROUND: UV radiation is a risk factor for nonmelanoma skin cancer (NMSC). The relation between DNA damage and oncogenesis suggests that diminished DNA repair capacity (DRC) is involved in tumorigenesis. OBJECTIVE: The purpose of this study was to test the hypothesis that a low DRC is a susceptibility factor for the development of NMSC in Puerto Rico. METHODS: A case-control retrospective clinical study was done to compare the age-adjusted DRC in participants with and without NMSC. DRC was measured using a host cell reactivation assay with a luciferase reporter gene irradiated with UV light and transfected into human peripheral lymphocytes. An epidemiologic questionnaire was used to solicit risk factors. RESULTS: The mean (+/-2 SE) DRC of 177 control patients without skin cancer was 8.6% +/- 0.7. Participants (280) with NMSC had a 42% lower DRC (5.0% +/- 0.3). CONCLUSION: A low DRC is a susceptibility factor for NMSC.
Asunto(s)
Daño del ADN/genética , Reparación del ADN/genética , Neoplasias Cutáneas/etnología , Neoplasias Cutáneas/genética , Población Blanca/genética , Adulto , Distribución por Edad , Anciano , Carcinoma Basocelular/etnología , Carcinoma Basocelular/genética , Carcinoma de Células Escamosas/etnología , Carcinoma de Células Escamosas/genética , Estudios de Casos y Controles , Femenino , Predisposición Genética a la Enfermedad , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Primarias Múltiples/etnología , Neoplasias Primarias Múltiples/genética , Oportunidad Relativa , Puerto Rico/epidemiología , Estudios Retrospectivos , Medición de Riesgo , Distribución por SexoRESUMEN
PURPOSE: To describe three Hispanic patients with oculodermal melanocytosis and uveal melanoma. METHOD: Case series. RESULTS: Three Hispanic patients with oculodermal melanocytosis and uveal melanoma underwent enucleation. The diagnosis of choroidal melanoma was confirmed by histopathologic examination. CONCLUSION: In the Hispanic population, uveal melanoma can occur in the presence of oculodermal melanocytosis.