Similarly to standard diagnostic parameters, also levels of intrathecal NFL did not differ between the groups (median MS and AID: 2378 pg/ml, MS without AID: 1979 pg/ml, MS and ABF: 1697 pg/ml, MS without AID and ABF: 2060 pg/ml; Fig. 3). The gene discussed is AICDA; the disease is myeloid sarcoma.