TRPV2 and Miyoshi myopathy: Presence of TRPV2 in MM cells was confirmed by immunofluorescence staining (Fig. 1f and Additional file 4: Figure S4a), both U266 and A549 were used as the negative control (Additional file 3: Figure S3 g and h), all three-cell lines have a high green fluorescence of CD38, but U266 and A549 have low red fluorescence of TRPV2, which indicated that TRPV2 is expressed at both mRNA and protein levels in MM cells.