Clinical trial to assess safety and efficacy of novel GnRH antagonist in patients with pelvic pain associated with endometriosis

GENEVA, SWITZERLAND, 12 October, 2016

ObsEva SA, a Swiss biopharmaceutical company focused on the development and commercialization of novel therapeutics for serious conditions that compromise a woman’s reproductive health and pregnancy, today announced randomization of the first patient in its Phase 2b clinical study (EDELWEISS) of OBE2109 for the treatment of endometriosis. OBE2109 is a novel, orally administered, gonadotropin-releasing hormone (GnRH) antagonist that has been tested in more than 150 Japanese patients with endometriosis. In those Phase 2a studies, conducted by Kissei Pharmaceutical Co., Ltd. (Kissei), a dose-dependent suppression of estradiol was observed with treatment with OBE2109. In addition, patients reported significant reductions of endometriosis-associated pelvic pain, analgesic use and bleeding days.

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