Hope Medicine Inc. reported positive interim results for monoclonal antibody HMI-115 in a phase II endometriosis trial that saw the mean non-menstrual pelvic pain score reduced by 50%. “HMI-115 is a prolactin receptor blocker, and we're using it to treat endometriosis and some other diseases. It is a first-in-class new mechanism to treat endometriosis,” Hope Medicine CEO Nathan Chen told BioWorld.