The vast majority of primary immunodeficiencies (PIDs) occur due to the defects in cells originating from hematopoietic stem cells, while in some PIDs, there are defects in various genes responsible for non-leucocyte immune response such as seen in epidermodysplasia verruciformis (EV). EV caused by the mutations in TMC6, TMC8, and CIB1 genes is called "typical." "Atypical" EV may develop in patients with primary immunodeficiencies originating from hematopoietic stem cells, which include severe T-cell failure, caused by inactivating biallelic mutations of STK4, RHOH, CORO1A, ITK, TPP2, DCLRE1C, LCK, RASGRP1, or DOCK8 genes. Here, we present a family with TMC8 gene mutation leading to disseminated epidermodysplasia verruciformis including laryngeal papilloma and recurrent cutaneous squamous cell carcinomas. Typical EV with impaired local, keratinocyte-intrinsic immune response should be considered when routine immunological examinations are normal in patients presenting with clinical signs of EV. Although it is not possible to prevent EV lesions, early and appropriate surveillance for malignancy is mandatory.
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