Biosimilar Interchangeability: How To Design A Multiple-Switch Study

US FDA guidance lays out two types of study design recommendations: a dedicated study to demonstrate interchangeability, and an integrated study intended to support determinations of both biosimilarity and interchangeability.

Switching studies intended to support interchangeability should include as least three transitions between a biosimilar and its US-licensed reference product, FDA’s new draft guidance on interchangeability states.

Such studies also should include a comparator arm in which patients receive only the reference product, the agency said.

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