No significant differences between the fold changes of the PTvs.N to the Mvs.N dataset could be detected for FGFR1, IGF1R, FGFR2, MET, HRAS, PTEN and NF1. ERBB2, FGFR3 and MYC overexpression percentages were significantly higher in primary tumours than in metastases. The gene discussed is NF1; the disease is neoplasm.