A Study Evaluating the Safety and Efficacy of SM04690 for the Treatment of Moderately to Severely Symptomatic Knee Osteoarthritis

Summary

This phase 2 study is a placebo-controlled, double-blind, parallel group study of four concentrations of SM04690 (0.03, 0.07, 0.15, and 0.23 mg per 2 mL injection) injected intraarticularly (IA) into the target knee joint of subjects with moderately to severely symptomatic osteoarthritis (OA). Based on previous studies of SM04690, key phenotypes of laterality (unilateral vs bilateral) as well as chronic pain (as measured by the Widespread Pain Index) were identified as confounding variables impacting the overall assessment of both radiologic and clinical efficacy outcomes. The design of SM04690-OA-04 is based upon previous study designs while assessing strategies to combat the confounding impact of laterality and chronic pain. To evaluate the effect of IA vehicle injection on patient-reported outcomes (PRO) such as pain, stiffness, and function in OA, this study also includes one cohort that receives a 2 mL IA injection of vehicle (placebo), and one cohort that receives a sham injection (i.e., a needle stick with 0 mL vehicle injected).

Timeline

Start

2017-04-24

Primary completion

2018-04-30

Completion

2018-04-30

Publications

• Results Yazici Y, McAlindon TE, Gibofsky A, Lane NE, Lattermann C, Skrepnik N, Swearingen CJ, Simsek I, Ghandehari H, DiFrancesco A, Gibbs J, Tambiah JRS, Hochberg MC. A Phase 2b randomized trial of lorecivivint, a novel intra-articular CLK2/DYRK1A inhibitor and Wnt pathway modulator for knee osteoarthritis. Osteoarthritis Cartilage. 2021 May;29(5):654-666. doi: 10.1016/j.joca.2021.02.004. Epub 2021 Feb 12.
• Tambiah J, Kennedy S, Swearingen C, McAlindon T, Yazici Y. Impact of structural severity on outcomes in knee osteoarthritis: an analysis of data from phase 2 and phase 3 lorecivivint clinical trials. Rheumatology (Oxford). 2025 May 1;64(5):2583-2590. doi: 10.1093/rheumatology/keae610.
• Tambiah JRS, Simsek I, Swearingen CJ, Kennedy S, Cole BJ, McAlindon TE, Yazici Y. Comparing Patient-Reported Outcomes From Sham and Saline-Based Placebo Injections for Knee Osteoarthritis: Data From a Randomized Clinical Trial of Lorecivivint. Am J Sports Med. 2022 Mar;50(3):630-636. doi: 10.1177/03635465211067201. Epub 2022 Jan 10.
• Tambiah JRS, Kennedy S, Swearingen CJ, Simsek I, Yazici Y, Farr J, Conaghan PG. Individual Participant Symptom Responses to Intra-Articular Lorecivivint in Knee Osteoarthritis: Post Hoc Analysis of a Phase 2B Trial. Rheumatol Ther. 2021 Jun;8(2):973-985. doi: 10.1007/s40744-021-00316-w. Epub 2021 Jun 8.

Drugs

Indications