Epidermodysplasia verruciformis in Nigerians

Area of Science:

• Dermatology
• Pathology
• Genetics

Background:

• Epidermodysplasia verruciformis (EV) is a rare genetic disorder characterized by abnormal susceptibility to specific human papillomaviruses (HPVs).
• EV lesions can range from flat-topped papules to larger plaques and have a high risk of malignant transformation, particularly to squamous cell carcinoma.
• Previous literature suggests variations in EV presentation and progression across different ethnic groups.

Purpose of the Study:

• To analyze the clinical and pathological characteristics of epidermodysplasia verruciformis (EV) in a cohort of Nigerian patients.
• To investigate the occurrence of specific skin conditions, such as seborrhoeic keratosis and solar elastosis, in relation to EV in this population.
• To explore factors contributing to the observed clinical course of EV in Africans.

Main Methods:

• Retrospective analysis of clinical data and histopathological findings from 12 Nigerian patients diagnosed with epidermodysplasia verruciformis.
• Detailed examination of lesion morphology, including typical wart-like papules and larger confluent plaques.
• Review of biopsy results for associated conditions like seborrhoeic keratosis and solar elastosis.

Main Results:

• Two distinct morphological variants of EV were identified: typical wart-like papules and larger confluent plaques.
• Seborrhoeic keratoses and solar elastosis were observed in patients with the second morphological variant of EV.
• No cases of malignant epithelial skin tumors were found in the entire study group, contrasting with findings in other populations.

Conclusions:

• The presentation of epidermodysplasia verruciformis in Nigerian patients may differ from other ethnic groups, with a notable absence of malignant transformation in this cohort.
• The co-occurrence of seborrhoeic keratosis and solar elastosis in a subgroup of EV patients suggests potential interactions or specific pathogenetic pathways.
• Further research is warranted to elucidate the factors contributing to the apparently more benign course of EV in African populations.