Recently, we developed a joint likelihood approach to this problem and used it to compare MS risk associations from the IMSGC ImmunoChip study to eQTL in CD4+ T cells, CD14+ monocytes and lymphoblastoid cell lines.63 We found that, of 59 densely genotyped loci showing genome‐wide significance to MS risk, 56 also had an eQTL to at least one gene within 100 kb of the most associated MS variant, with most of these harbouring eQTLs to multiple genes. Here, CD4 is linked to myeloid sarcoma.