FGF7 protein expression in human breast carcinomas.

FGFs, especially FGF7, are thought to play an important role in the stroma-epithelium interactions that take place in several tissues, including the prostate and mammary glands. Using an immunohistochemistry approach, FGF7 protein expression was measured in a series of 80 human breast carcinomas. FGF7 was found to be expressed in two-thirds of cases studied, either in the stroma or in the tumour cells. Although it did not reach significance level, a tendency was noted for FGF7 expression to be associated with the most differentiated and least aggressive tumours.