Thank you to everyone who sent me feedback on this podcast. This episode is based on a suggestion from Drew. In this episode, I discuss bioequivalence studies and generic drug development. I will refer to guidance documents from both the European Medicines Agency or EMA and the US Food and Drug Administration or FDA. First, I will start with a discussion of the definition of bioequivalence or BE. Then I will discuss the statistical basis for bioequivalence and how you can leverage that for study design. And I will end with some unique challenges related to bioequivalence. Throughout, I will give practical suggestions based on my experiences in the past with BE studies.

Links discussed in the show:

• EMA guidance on bioequivalence

• FDA guidance on statistical approaches to bioequivalence (December 2022)

• FDA statistical approaches to BE (January 2001)

• FDA guidance on BE studies (2022)

• FDA product-specific guidances on BE

• Lecture from Helmut Schütz on finding intra-subject variability (or CV%) for power calculations

• PowerTOST R Package

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