Abstract:
:In general, similar to FDA and other health authorities, the PMDA requires clinical efficacy study(ies) to evaluate equivalence between a reference biological product and a Biosimilar product for new drug applications. Even if an identical clinical efficacy study is included in both of PMDA and FDA submissions, the coefficients of confidence interval (CI) used for comparison with the equivalence margins could be different between the two submissions (e.g., 95% CI vs. 90% CI). In this article, we will focus on clinical efficacy studies of Biosimilar products and provide an overview of the two one-sided tests (TOST) and the type I error rate for equivalence design. Then, we summarize published PMDA review reports of Biosimilar products in terms of the coefficients of CI and other elements of the primary endpoints, and explain some Japanese guidelines of Biosimilar and Statistics behind the difference between PMDA and FDA submissions. In addition, we discuss how to use statistical methods correctly and efficiently for PMDA submissions.
journal_name
Ther Innov Regul Scijournal_title
Therapeutic innovation & regulatory scienceauthors
Asami Y,Pan J,Oh M,Sato Adoi
10.1007/s43441-020-00133-3subject
Has Abstractpub_date
2020-09-01 00:00:00pages
1134-1137issue
5eissn
2168-4790issn
2168-4804pii
10.1007/s43441-020-00133-3journal_volume
54pub_type
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journal_title:Therapeutic innovation & regulatory science
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