CD274 and Miyoshi myopathy: Classifying MM patients according to the ISS, we described a higher PD-L1 expression on CD14+ cells in patients with ISS = II and III as compared with ISS = I patients (ISS II + III vs. I, median MFI 20.35 vs. 14.72, Mann-Whitney test, p = 0.02) (Figure 1E), with no differences on PC compartment (data not shown).