A randomized, double-blind, parallel-group phase I study comparing the pharmacokinetics, safety, and immunogenicity of LY01008, a candidate bevacizumab biosimilar, with its reference product Avastin (R) in healthy Chinese male subjects

Background Bevacizumab, an inhibitor of angiogenesis, has been approved in several anti-cancer therapies. This study compared the pharmacokinetic (PK) profiles, safety, and immunogenicity of a bevacizumab biosimilar, LY01008, with those of European Union - approved bevacizumab (Avastin (R)) in healthy Chinese males. Research Design and Methods In this double-blind, open-label, parallel-group study, healthy Chinese male subjects were randomized 1:1 to receive either LY01008 or Avastin (R) 3 mg/kg intravenously. Primary study endpoints were PK parameters such as the area under the concentration-time curve (AUC) from time zero to infinity (AUC(0-infinity)), AUC from time zero to last quantifiable concentration (AUC(0-t)), and maximum serum concentration (C-max). Secondary study endpoints included safety, tolerability, and immunogenicity. Results One hundred and twelve subjects were randomized to receive LY01008 (n = 56) or Avastin (R) (n = 56). The 90% CIs of the GMRs of AUC(0-t), AUC(0-infinity), and C-max of LY01008 to Avastin (R) were all within the bioequivalence margin. Other PK parameters, safety, and immunogenicity profiles were comparable across the two treatment groups. Conclusions This study demonstrated equivalent PK, comparable safety, and similar immunogenicity of LY01008 to Avastin (R) in healthy subjects, thus paving the way for further clinical evaluation.