CD16a expression and other proteins in the 38 cases of neurogenic tumors (18 cases of NF; 14 cases of ANNUBP; and 6 cases of MPNST arising in neurofibroma) showed no association with a shorter FFR or overall survival periods in univariate Cox proportional hazard regression analysis (Table 3), nor did the 32 patients with NF or ANNUBP. This evidence concerns the gene FCGR3A and neurofibroma.