Of note, 3 samples were assigned to cluster B despite what was expected based on their classifier result: 1 MTT in NF1, that classified as MPNST-like, 1 MPNST in NF1 that classified as osteosarcoma, and 1 MTT in NF1 that classified as RMS-like. The gene discussed is NF1; the disease is osteosarcoma.