NTRK2 and Miyoshi myopathy: To further strengthen the presence of progenitor phenotypes we found by triple staining of NTRK2 along with NCAM and EpCAM, EpCAM+NCAM+NTRK2+ cells (3.1±2.5% of total, 6.8±3.3% NCAM+NTRK2+ cells within the EpCAM+ population) as well as putative MM stem cell populations, EpCAM−NCAM+NTRK2+ cells (0.61±0.3% of total, 3.3±2.5% NCAM+NTRK2+ cells within the EpCAM− population) and EpCAM−NCAM−NTRK2+ cells (2.7±2.4% of total, 7.5±2.7% NCAM−NTRK2+ cells within the EpCAM− population) (Fig. 4b).