2 FDA Gene Therapy Guidances Out

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FDA has published two guidances relating to gene therapy products. The first, Interpreting Sameness of Gene Therapy Products Under the Orphan Drug Regulations, gives the agency’s current thinking on determining the sameness of these products for orphan drug designation and exclusivity. It is intended to assist stakeholders in developing gene therapies for rare diseases. The document focuses specifically on factors FDA generally intends to consider when determining sameness and does not address sameness determinations for other product types. The guidance finalizes a 1/2020 draft.

The second document, Studying Multiple Versions of a Cellular or Gene Therapy Product in an Early-Phase Clinical Trial, is a draft that provides recommendations to sponsors interested in studying multiple versions of a cellular or gene therapy product in an early-phase clinical trial for a single disease. The agency says sponsors have expressed interest in gathering preliminary evidence of safety and activity using multiple versions of a cellular or gene therapy product in a single clinical trial. In the guidance, FDA gives recommendations for studies evaluating multiple versions of a cellular or gene therapy product, including how to organize and structure the INDs, submit new information, and report adverse events.

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