BRAF and melanoma: Of the melanomas with BRAF gene mutations, 15% (5/32) had a thickness less than 1 mm, 12.5% (4/32) a thickness between 1 and 2 mm, inclusive, 9.3% (3/32) a thickness greater than 2 mm up to 4 mm, and 21.8% (7/32) a thickness greater than 4 mm.