In contrast, no relationships between microglia/macrophages and neurons were detected in HLA‐DRB1*15+ MS cases (Iba1+: r = 0.207, p = 0.409; CD68+: r = 0.185, p = 0.463; TMEM119+: r = 0.355, p = 0.125) (Figure 2C). Here, HLA-DRB1 is linked to myeloid sarcoma.