At the first visit (Day 1), all subjects will complete Patient Acceptable Symptom State (PASS) and pain Numeric Rating Scale (NRS) assessments and then receive a blinded study injection into their target knee (the same target knee injected in the parent study), with subjects receiving the same treatment (either 0.07 mg LOR or placebo) as they received in the parent study. Subjects will have clinic visits for pain and function assessments, collection of adverse events, and knee radiographs. At Week 48, all subjects, regardless of previous treatment, will receive an injection of 0.07 mg LOR into their target knee. Subjects will receive injections of 0.07 mg LOR into their target knee every 52 weeks thereafter until end of study.
This study is designed as a long-term extension to the Phase 3 parent-study SM04690-OA-11. It aims to evaluate the safety and efficacy of long-term use of lorecivivint (LOR) in subjects with knee osteoarthritis (OA). The first 48 weeks will be single-blind and placebo-controlled while the remainder of the study will be open-label and uncontrolled. Subjects must enroll no later than 6 weeks following completion of the parent-study.