3586

IL10

CSIF|GVHDS|IL-10|IL10A|TGIF;interleukin 10;IL10;interleukin 10

T-cell growth inhibitory factor|cytokine synthesis inhibitory factor|interleukin-10

1q31-q32

protein-coding

BACKGROUND: Epidermodysplasia verruciformis (EV) is a rare genetic disorder characterized by development of lesions associated with human papillomavirus in early childhood and malignant transformation in approximately half of individuals during adulthood. The persistence of human papillomavirus infection in EV is thought to be a result of an immunogenetic defect, which determines the generation of several cytokines capable of down-regulating cell-mediated immunity. OBJECTIVE: We sought to study the prevalence of interleukin 10 (IL-10)promoter polymorphisms in skin biopsy specimens of patients with EV compared with DNA samples from healthy individuals. Patients and methods DNA samples extractedfrom normal skin of 22 patients from Brazil with EV and blood samples from 27 healthy Brazilian individuals were studied for IL-10 promoter polymorphisms using restriction fragment length polymorphism analysis. RESULTS: The patients with EVshowed an increased rate of low-production genotypes of IL-10 compared with control subjects (P =.003). Patients with EV and skin cancer were more likely tohave low-production IL-10 genotypes than patients with benign forms of EV. CONCLUSION: IL-10 genotypes associated with low levels of IL-10 production may have an important role in the pathogenesis of EV, including the susceptibility for development of skin cancer in patients with EV.

BACKGROUND: Epidermodysplasia verruciformis (EV) is a rare genetic disorder characterized by development of lesions associated with human papillomavirus in early childhood and malignant transformation in approximately half of individuals during adulthood. The persistence of human papillomavirus infection in EV is thought to be a result of an immunogenetic defect, which determines the generation of several cytokines capable of down-regulating cell-mediated immunity. OBJECTIVE: We sought to study the prevalence of interleukin 10 (IL-10)promoter polymorphisms in skin biopsy specimens of patients with EV compared with DNA samples from healthy individuals. Patients and methods DNA samples extractedfrom normal skin of 22 patients from Brazil with EV and blood samples from 27 healthy Brazilian individuals were studied for IL-10 promoter polymorphisms using restriction fragment length polymorphism analysis. RESULTS: The patients with EVshowed an increased rate of low-production genotypes of IL-10 compared with control subjects (P =.003). Patients with EV and skin cancer were more likely tohave low-production IL-10 genotypes than patients with benign forms of EV. CONCLUSION: IL-10 genotypes associated with low levels of IL-10 production may have an important role in the pathogenesis of EV, including the susceptibility for development of skin cancer in patients with EV.