CD4 and leprosy: In keeping with the observation that a credible set SNP for the leprosy association overlaps with an active promoter 5’ to ACTR1A, among eQTL mapping data in primary immune cells (Fig 3A), there is evidence for colocalisation between the leprosy risk locus and an eQTL for ACTR1A expression in CD4+ T cells (posterior probability of colocalisation, PP4 = 0.94).