NCIt definition : Steroid sulfatase inhibitor BN 83495 selectively binds to and inhibits steroid sulfatase
(STS), which may inhibit the production of locally active estrogens and so inhibit
estrogen-dependent cell growth in tumor cells, such as those of the breast, ovary,
and endometrium. STS is a cytoplasmic enzyme responsible for the conversion of circulating
inactive estrone sulfate and estradiol sulfate to biologically active unconjugated
estrone and estradiol, respectively.;