When we analyzed the possible correlation between HHV-6A/B IgG titers and the cell subsets, we did not find any significant result among the untreated MS patients, but we did in the HC group: HHV-6A/B IgG titers correlated with IL-17-producing CD4+ T cells (r = 0.535) and with GM-CSF-producing B cells (r = −0.543) (Figure 3). Here, CSF2 is linked to myeloid sarcoma.