** Shares of women's healthcare firm Organon OGN.N fall 2.9% to $9.79 before the bell
** OGN says it will discontinue the development of its experimental drug, after it failed to reduce pain in women suffering from endometriosis in a proof-of-concept mid-stage study
** Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus, often causing chronic pelvic pain and infertility
** The drug, OG-6219, was being tested in women aged 18 to 49 who had moderate-to-severe endometriosis-related pain, but results showed no significant improvement compared to a placebo
** Patients were randomized to receive one of three doses of OG-6219 or placebo orally twice a day - OGN
** Up to last close, stock down 32.6% YTD
(Reporting by Siddhi Mahatole)
((siddhi.mahatole@thomsonreuters.com))