There was no relationship between BRAF/NRAS mutations and gene dosage at 9p21.3.     ///    "BRAF/NRAS mutations were detected in 77% of relapsers and 58% of nonrelapsers (Fisher's exact P = 0.17), and did not predict ulceration or mitotic rate. "    ///    Deletion at chromosome arm 9p in relation to BRAF/NRAS mutations and prognostic significance for primary melanoma.. 