These discrepancies between the different compartments (PB vs. BM) were seen only at the time of MM diagnosis; the only differences maintained at CR were those of total CD4+ and CD8+ T cell compartments among CD3+ T cells (for CD4: 46.3% in PB vs. 40.9% in BM; p < 0.001; for CD8: 43.8% in PB vs. 53.1% in BM; p < 0.001). Here, CD4 is linked to Miyoshi myopathy.