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[May 2026] FDA's NAMs Validation Framework, Finalized Patient Preference Information Guidance + Clinical Thermometer Warning Letter

CDER tells you how to put new approach methodologies in front of reviewers, FDA finalizes guidance on patient preference information across the product life cycle, plus a warning letter breakdown.

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This month, Jesse Hart breaks down CDER's draft guidance for new approach methodologies in drug development: the four-pillar framework, the validation-versus-qualification distinction, and where programs typically fall short. Jonathan Wacks explains the finalized Patient Preference Information guidance and how to structure a PPI initiative. And Judson Russell dissects the warning letter to PhysiTemp Instruments and what it teaches about 510(k) exemption claims, process validation, and complaint handling.

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