Abstract:
Objective To compare the efficacy and safety of LY01011, a recombinant anti-RANKL fully human monoclonal antibody injection, versus denosumab in the treatment of bone metastases from solid tumors.
Methods A randomized, double-blind, positive drug parallel-controlled, multicenter clinical trial was conducted. A total of 850 subjects were randomly assigned (1:1) to either the experimental group (424 subjects) or the control group (426 subjects). The experimental group received 13 doses of LY01011, while the control group received 3 doses of denosumab followed by 10 doses of LY01011.
Results The primary efficacy endpoint was the natural logarithmic change from baseline in urinary N-terminal telopeptide of type I collagen corrected by urinary creatinine (uNTX/uCr) at week 13. The change was -1.740 (0.0420) in the experimental group and -1.745 (0.0421) in the control group. The least-squares mean difference between groups was 0.005 (90% CI: −0.088 to 0.097), indicating no statistically significant difference (P>0.05). Safety profiles, including treatment-emergent adverse events, laboratory tests, vital signs, physical examinations, and electrocardiograms, were comparable between groups (P>0.05).
Conclusions LY01011 demonstrated biosimilarity to denosumab, with favorable safety profile, tolerability, and potential for clinical application.