June 9, 2026 02:22 PM EDT

A fa­ther built a gene ther­a­py for his daugh­ter. He says an FDA re­quest is the bot­tle­neck

Grace Sci­ence ap­peared to be one of the few com­pa­nies fight­ing ul­tra-rare dis­eases whose gene ther­a­py can­di­date might make it across the fin­ish line.

Co-found­ed …

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