NF1 and malignant peripheral nerve sheath tumor: We further validated these findings in the TCGA dataset, with 2 of 2 (100%) of MPNST-G1 harboring 17q deletions encompassing the NF1 locus, while 2 of 3 (66%) MPNST-G2 tumors harboring NF1 mutations (Supplementary Fig. 3c).