In the CyTOF cohort, the MMD group displayed increased expression levels of CD14, CXCR3, CX3CR1, CD45RA, CD45RO, CD11b, CD11c, CD25, CD27, CD62L, HLA‐DR and p‐STAT3 in comparison to the HC group. Here, STAT3 is linked to multiminicore myopathy.