In dermal fibroblasts obtained from 12 people with Dupuytren disease (mean age, 55 years; range, 42‐72 years), the production of TGF‐β1 was greater than that of TGF‐β2, and addition of TGF‐β1 (5 ng/mL) to Dupuytren disease cultures increased mitogenesis by up to fivefold.57 The gene discussed is TGFB2; the disease is Dupuytren Contracture.