
The $1 Billion Bet on Pre-Symptomatic Medicine: Who Will Own the Longitudinal Baseline?
DDDr. Dereck Mush, MD, MBA
Sep 13Prime editing company developing genetic therapies for inherited diseases.
Prime Medicine is advancing PM647, an investigational in vivo prime-editing therapy for alpha-1 antitrypsin deficiency. The FDA cleared its investigational new drug application in September 2026, allowing a US clinical study of the approach targeting the PiZZ genotype. Clinical efficacy remains to be established.

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