MED12 (92% vs 5%, Fisher's exact test, P = 1.620 × 10−6), TERT (42% vs 0, Fisher's exact test, P = 0.0047), and RARA (33% vs 0, Fisher's exact test, P = 0.0157, Fig. S2D) were significantly more frequently mutated in that subset of PTs than in adenosarcomas, whereas no gene was significantly more frequently mutated in adenosarcomas. Here, RARA is linked to adenosarcoma.