SKM9-2 antigen was detected in 92% of MPMs, and the positive rate exceeded those for other MM diagnostic markers, viz. calretinin (80%), cytokeratin 5/6 (CK5/6) (78%), podoplanin (82%), nucleus Wilms’ tumor gene product 1 (WT-1) (87%), and mesothelin (79%). This evidence concerns the gene WT1 and Miyoshi myopathy.