NF1 and perineurioma: Intraneural perineuriomas harbor missense mutations in TRAF7 [83], whereas soft tissue perineuriomas commonly show deletions of chromosome 22q (NF2) and deletions of chromosome 17q11 (NF1) [84], as well as chromosome 2p deletions or rearrangements or deletions of chromosome 10q (sclerosing variant) [85].