We first probed the snRNAseq data provided by Jakel et al work (Jäkel et al., 2019), and observed that few cells express Ndst1 in both control and MS tissues but when the oligodendrocytes that express Ndst1 are compared, there is a trend to increased expression in MS tissue (Figure 8—figure supplement 1). Here, NDST1 is linked to myeloid sarcoma.