FZD7 and Miyoshi myopathy: Furthermore, using triple FACS staining of HFK cells that also includes NCAM (Fig. 4b) we were able to demonstrate cell populations of the FZD7+EpCAM+NCAM+ progenitor phenotype (MM-derived, 2.5±1.0% of total cells, 4.7±1.0% FZD7+NCAM+ cells within the EpCAM+ population) as well as FZD7+NCAM+EpCAM− (0.6±0.5% of total cells, 2.2±0.7% FZD7+NCAM+ cells within the EpCAM− population) and surprisingly also FZD7+EpCAM−NCAM− phenotypes (2.0±0.8% of total cells, 7.8±4.18% FZD7+NCAM− cells within the EpCAM− population), which are both likely to represent putative MM-originating stem cells.