Cancer prone diseases
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autosomal recessive in 10 to 20 % of the patients; other cases are sporadic; rare disease.
226400 , 305350
302 Epidermodysplasia verruciformis
Phenotype and clinics
age at onset is variable; more frequently: young adults or children
two types of elementary cutaneous lesions are observed :
- persistant papule-like warts, isolated, or confluent with a psoriasic aspect
- white spots, pityriasis versicolor-like
both types of lesions are localized mainly on the outer part of the hands, on foreharms, legs, face, trunk and perianal zone.
immunodeficiency: decreased immune response of T lymphocytes to mitogens, decreased humoral response to Human Papilloma Virus antigens; EV lesions have been described in renal transplant recipients.
various Human Papilloma Virus (HPV) subtypes are regularly detected in the cutaneous lesions: HPV 5, 8, 9, 12, 14, 15, 17, 19, 25, 36, 38, 47, 50.
patients are simultaneously affected by differents HPV subtypes, according to disease localisation; these subtypes are different from those observed in common warts (HPV 2, 3, 4, 10).
Top left: numerous papule-like warts on the skin of an hand; right: other aspect of papule-like warts on one hand; bottom left: basocellular carcinoma of the face developped from epidermodysplasia verruciformis lesions; right: carcinoma of the face developped from epidermodysplasia verruciformis lesions - Courtesy Daniel Wallach
risk of malignant transformation of cutaneous lesions is within a delay of 20 to 30 yrs (very slow process comparable to the genital carcinogenesis associated with high risk HPVs)
cytology: squamous cell carcinoma (spinocellular or basocellular carcinoma, Bowen disease).
correlation with oncogenic subtypes of HPV found in the transformed lesions: HPV 5, 8, 14; the most frequent subtypes are HPV 5 and 8 (90% of cases).
benign familial forms are associated with HPV 3, without malignant evolution.
HPV-5 is present in the macular lesions.
probable potentialisation by UV ligth: 25 to 30% of malignant lesions localised to the face and forehead (hypothetic role of P53 mutations).
protein E6 and\/or E7 (tumor suppressor function) from HPV seem to be involved in the malignant transformation.
surgical resection of localized lesions; chemotherapy with Acitretin (25 mg\/j) for multifocal lesions.
local recidives, enhanced by UV exposition.
Genes involved and Proteins
genes and proteins are unknown.
Human papillomaviruses are commonly found in normal skin of immunocompetent hosts.
Astori G et al
Detection of new human papillomavirus sequences in skin lesions of a renal transplant recipient and characterization of one complete genome related to epidermodysplasia verruciformis-associated types.
Bens G et al
Toxic epidermal necrolysis in Singapore, 1989 through 1993: incidence and antecedent drug exposure.
Chan HL et al
Psoriasis: A possible reservoir for human papillomavirus type 5, the virus associated with skin carcinomas of epidermodysplasia verruciformis.
Favre M et al
Human papillomavirus DNA in non-melanoma skin cancers of a renal transplant recipient: detection of a new sequence related to epidermodysplasia verruciformis associated types.
Höpfl R et al
E7 proteins of four groups of human papillomaviruses, irrespective of their tissue tropism or cancer association, possess the ability to transactivate transcriptional promoters E2F site dependently.
Hiraiwa A et al
Skin autografts in epidermodysplasia verruciformis: human papillomavirus-associated cutaneous changes need over 20 years for malignant conversion.
Majewski S et al
p53 mutations implicate sunlight in post-transplant skin cancer irrespective of human papillomavirus status.
McGregor JM et al
Regulatory interactions of transcription factor YY1 with control sequences of the E6 promoter of human papillomavirus type 8.
Pajunk HS et al
[HPV-5 typing with nested PCR and sequencing in epidermodysplasia verruciformis].
Schaller J et al
E2 represses the late gene promoter of human papillomavirus type 8 at high concentrations by interfering with cellular factors.
Stubenrauch F et al
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