We recently found that the activated nerve growth factor (NGF) receptor p-TrkA is more frequently expressed compared to p75, another NGF receptor that belongs to the tumor necrosis factor family, in MM, and that p-TrkA expression is significantly higher in peritoneal MM compared to their pleural counterparts (Figures 1-D, 1-E). This evidence concerns the gene NGFR and Miyoshi myopathy.