Table 3.
Distribution of histotypes in NRAS-mutant MM patients (N = 525; 24.1%) among the 2,178 cases from the COSMIC database
| Histotype | NRAS-mutant Patients N (%) |
|---|---|
| Superficial Spreading Melanoma (SSM) | 177 (33.7%) |
| Nodular Melanoma (NM) | 209 (39.8%) |
| Acral Lentiginous Melanoma (ALM) | 87 (16.6%) |
| Desmoplastic Melanoma (DM) | 3 (0.6%) |
| Spitzoid Melanoma (SM) | 13 (2.5%) |
| Lentigo Maligna Melanoma (LMM) | 18 (3.4%) |
| Epithelioid Melanoma (EM) | 14 (2.7%) |
| Blue Nevus Melanoma (BNM) | 0 (0%) |
| Amelanotic Melanoma (AM) | 1 (0.2%) |
| Nevoid Melanoma (NEM) | 2 (0.4%) |
| Mucosal Lentiginous Melanoma (MLM) | 1 (0.2%) |
| Total | 525 |