Determination of sex steroid receptor in human basal cell carcinoma.

The role of estrogens in the development of skin cancer is controversial. Sex steroids have a profound effect on the epidermis and epidermal appendages. Estradiol in pharmacologic doses has been reported to stimulate basal cell carcinoma in an animal model. Sex hormones act by means of a specific protein receptor. In this study we used a specific, highly sensitive monoclonal antibody to evaluate sex steroid receptors in human basal cell carcinoma. No estrogen or progesterone receptor protein was detected in the basal cell tumor, despite clear positive control tissues. We conclude that these sex steroid receptors are not present in significant amounts to mediate a direct effect in basal carcinoma.