Geneva-based Obseva SA’s phase III Primrose 2 trial with gonadotropin-releasing hormone (GnRH) antagonist linzagolix in heavy menstrual bleeding (HMB) due to uterine fibroids (UFs) hit the primary endpoint in 94% of patients, and the company in the second quarter of 2020 will report six-month data from the Primrose 1 study, which is also a phase III experiment, in the same indication.