NF1 and neoplasm: One MPNST (non-NF1) had no SCNAs; others: average 13 SCNAs/tumor. Gains more common than losses. The only amplifications were in non-NF1 (sporadic) tumors, with 5p and 12q coamplified, and other amplifications unique. Gain of 7p11-p13 and 17q24-q25 in 52% of cases. Gain of 5p15 in 47% cases. About 42% of cases had gain of 8q22-q24 or 12q21-q24. One sporadic had only 17q25 gain. One sporadic only had gain of 9q34 and 14q31q32. One sporadic only had gains 4p15p16, 5p15, 9q31q33, 12q14q22, 12q24.3, 14q31q32, and 21q22. Gains of 1q31-q32, 7q11-q31, and 9q32-q33 were each in 37% of tumors.