To summarize, our analysis identified six risk proteins (NAMPT, TIE1, CBR1, PDE4D, PAFAH1B2, NCF2) and seven protective proteins (FSTL1, PTPN4, SOCS3, GZMB, GPC1, C1QC, FCGR3B) that are causally associated with MM risk. This evidence concerns the gene FSTL1 and Miyoshi myopathy.