We found several genes with strong evidence for colocalization (ORMDL3, ANKRD55, FCRL3, AHI1, EAF2, GDPD5, and ZC2HC1A; see Table S10), i.e., instances where the MS risk allele also alters expression of these transcripts in the CSF. Here, ORMDL3 is linked to myeloid sarcoma.