SLC35A2 and Familial prostate cancer: In addition, 1α,25(OH)2D3 inhibits glucuronidation and so, inactivation of androgen in prostate cancer cells through the repression of UDP-glucuronosyltransferases (UGT) 2B15 and 2B17, which is counterintuitive given the growth promoting action of androgen and the antiproliferative effect of 1α,25(OH)2D3 in prostate cancer cells (Kaeding et al., 2008).