Inborn Errors of Metabolism That Use Dietary Management: Considerations for Optimizing and Standardizing Diet in Clinical Trials for Drug Product Development; Draft Guidance for Industry; Availability

The Food and Drug Administration (FDA or Agency) is announcing the availability of a draft guidance for industry entitled ``Inborn Errors of Metabolism That Use Dietary Management: Considerations for Optimizing and Standardizing Diet in Clinical Trials for Drug Product Development.'' This draft guidance describes FDA's current recommendations regarding how to optimize and standardize dietary management in clinical trials for the development of drugs treating inborn errors of metabolism (IEM) for which dietary management is a key component of patients' metabolic control. Optimizing dietary management in these patients before entry into and during the clinical trial(s) is essential to providing an accurate evaluation of the efficacy of new drug products.