Epidermodysplasia verruciformis-5 is an autosomal recessive immunologic disorder characterized by onset of warts and verrucous or plaque-like skin lesions associated with HPV infection. Immunologic workup shows T-cell lymphopenia, particularly affecting CD4+ T cells. There is an increased risk of skin malignancy, and some patients may have other symptoms of immune dysfunction (summary by Horev et al., 2015). For a discussion of genetic heterogeneity of susceptibility to epidermodysplasia verruciformis, see EV1 (226400).