Human papilloma virus 5-DNA in a carcinoma of an epidermodysplasia verruciformis patient infected with various human papillomavirus types.

An epidermodysplasia verruciformis patient suffering from generalized warts and a carcinoma at the forehead was found to be infected by at least six types and subtypes of human papillomaviruses. The central part of the carcinoma, however, harbored only human papillomavirus 5 DNA. The DNA persisted extrachromosomally in high genome copy number. In contrast to wart DNA preparations, a significant part of the viral sequences in the carcinoma was present as oligomers, at least part of them being concatemers as shown by S1 digest. The human papillomavirus 5 subtype from this carcinoma was compared with the two other carcinoma isolates described so far and proved to be rather similar.