Using our own PSC T-cell eQTL maps, we also performed colocalisation of PSC T-cell eQTLs with UC, CD, rheumatoid arthritis (RhA) and Type 1 diabetes mellitus (T1DM) risk loci, identifying ten IMD risk loci that colocalised with eQTLs for one or more genes (Supplementary Table 2). The gene discussed is DHX9; the disease is rheumatoid arthritis.