Inhibrx Biosciences Inc.’s monoclonal antibody for treating advanced or metastatic, unresectable chondrosarcoma hit its primary endpoint in a registrational phase II study, doubling the company’s stock on Oct. 24. Top-line data from the placebo-controlled study of ozekibart (INBRX-109) produced statistically significant and clinically meaningful improvement in median progression-free survival in a tough-to-treat patient population that has few remaining options.