Interpreting Sameness of Gene Therapy Products under the Orphan Drug Regulations
This guidance provides FDA’s current thinking on determining sameness of human gene therapy products under FDA’s orphan drug regulations for the purpose of orphan-drug designation and orphan-drug exclusivity. This guidance is intended to assist stakeholders, including industry and academic sponsors who seek orphan-drug designation and orphan-drug exclusivity, in the development of gene therapies for rare diseases. This guidance focuses specifically on factors that FDA generally intends to consider when determining sameness for gene therapy products and does not address sameness determinations for other types of products. This guidance finalizes the draft guidance of the same title dated January 2020
Ref:https://www.fda.gov/regulatory-information/search-fda-guidance-documents/interpreting-sameness-gene-therapy-products-under-orphan-drug-regulations
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