Methylation of MIR129-2 was more frequent in IgD immunoglobulin isotype, occurring in 3 (100%) of IgD, 34 (59.5%) of IgG, 8 (34.8%) of IgA, and 2 (18.2%) of light chain but none of non-secretary MM (p=0.013). The gene discussed is CD79A; the disease is Miyoshi myopathy.