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Krystal(US:KRYS) Forbesยท2025-07-31 13:50Longtime drug developer Suma Krishnan was 51 when she cofounded Krystal Biotech. Now the company has one gene therapy on the market and more in the works. #ForbesOver50 (Photo: Jamel Toppin for Forbes) https://t.co/hb8RGouKMY https://t.co/5138pb6yHR ...