NEFL and myeloid sarcoma: Mean NfL levels were three times higher in 158 patients with progressive MS (1260.4 ng/L, SD=1119.7) than 158 NINDCs and 14 HCs (469 ng/L, SD=306.2), and meta-analysis showed a significant effect size of 0.96, p<0.00001 (figure 5).