CD19 and Miyoshi myopathy: Interestingly, the percentage of CD19+CD24hiCD38hi Bregs in BMMCs of MM patients was significantly higher: the median = 10.08% (range = 2.46%–74.58%) as compared with PBMCs of HVs: median = 3.58% (range = 0.03%–14.92%; p < 0.0001) as well as with PBMCs of MM: median = 1.32% (range = 0.54%–4.69%; p < 0.0001) (Figure 1B).