ObsEva makes case for hormone suppressive therapy in uterine fibroid study, but safety qualms vex investors
About a month after the Swiss biotech disclosed a failed late-stage study in its IVF program, ObsEva on Monday unveiled positive pivotal data on its experimental treatment for heavy menstrual bleeding triggered by uterine fibroids, but the therapy’s safety profile irked investors.
ObsEva in-licensed the drug, linzagolix, from Japan’s Kissei Pharmaceutical in 2015. Two doses of the drug (100 mg and 200 mg) were tested against a placebo in the 535-patient Phase III study, dubbed PRIMROSE 2, in patients who were both on and off hormonal add-back therapy (ABT).
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