FGF1 and ovarian endometriosis: In a study by Hayrabedyan et al., the expression of several angiogenic factors (interleukin-1 alpha (IL-1 alpha), Fibroblast growth factor FGF-1, and S100A13) and a common pan-ovarian carcinoma antigen were investigated, in several cases of adenomyosis and ovarian endometriosis [42].