PDCD1 and Miyoshi myopathy: In contrast, the percentages of PD-1-ICOS+ Tfh, PD-1-ICOS+ Tfh1, PD-1-ICOS+ Tfh2, and PD-1+ICOS- Tfh17 cells in patients with MM were higher than those in HCs; however, the difference was not statistically significant (P > 0.05).