In the CyTOF cohort, MMD group displayed heightened expression levels of CCR10, CXCR3, CX3CR1, CD45RA, CD45RO, CD11b, CD11c, CD25, CD27, CD62L, HLA‐DR, p‐STAT3, ERK and TGFβ compared to the HC group. The gene discussed is CD27; the disease is multiminicore myopathy.