This study is a 2-period, multicenter, randomized, parallel-group, double-blind, placebo-controlled study consisting of a 2-year Core period, followed by a 3 year extension period. The primary objective of this study is to assess the efficacy of LNA043 compared to placebo at Week 104 as measured by the mean change from baseline in cartilage thickness using qMRI of the target knee
The study will determine the optimal dosing regimen of LNA043 in patients with knee osteoarthritis (OA).