ARID2 and melanoma: The most frequently mutated other genes in RAF1-fusion melanomas were TERTp (62%; 23/37), CDKN2A (60%; 24/40), TP53 (13%; 5/40), SPTA (12%; 3/26), FOXP1 (12%; 4/27), ARID2 (10%; 3/29), and PTEN (10%; 4/40) (Fig. 3b).