At the beginning of April 2023, the FDA published a draft of the fourth in a series of Guidance Documents entitled “Patient-Focused Drug Development: Incorporating Clinical Outcome Assessments (COA) Into Endpoints For Regulatory Decision-Making”.  Once finalized these four documents will be combined and will replace the 2009 Guidance, “Patient-Reported Outcome Measures: Use in Medical Product Development to Support Labeling Claims”.  Part 3, which was released in draft in June 2022, provides advice around the development and validation of new COA (including the modification of existing COA).

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