CYP24A1 and myeloid sarcoma: In this paper, we used three independent post-mortem human brain expression datasets to show that the risk allele C of a known MS disease SNP rs2248359 is strongly associated with increased expression of CYP24A1. The increase in expression could be a direct effect of the risk SNP or could be an effect of a SNP in linkage disequilibrium with this SNP.