Table 3. Functional annotations of novel loci and associated SNPs (details on eQTLs and ENCODE annotations in Supplementary Tables 14 and 15, Supplementary Data 2 and 3)16,21,22,23,24,25,37,38,39,40,41,42,43.
SNP/locus | eQTL/ENCODE | Other diseases | Known functions of genes |
---|---|---|---|
rs207403811p11.2SNP location: Lies within either the first intron or 5′ UTR of the various ACCS/PHACS gene isoformsWithin the same LD block as the adjacent gene EXT2. | Risk allele is strongly associated with increased ACCS gene expression levels in peripheral blood cells (P<9.81 × 10−198), monocytes (P=1.07 × 10−36), and B-cells (P=1.46 × 10−29).It is also associated with increased EXT2 expression levels in peripheral blood cells (P=2.63 × 10−53).This SNP and others in LD are also located at sites predicted with high likelihood to affect chromatin structure and protein binding. | Not previously associated with any other trait. | ACCS encodes a1-aminocyclopropane-1-carboxylate synthase homologue that belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family.Shown to interact with the protein encoded by FBF1 (Fas (TNFRSF6) binding factor 1), a keratin-binding protein that is required for epithelial cell polarization, apical junction complex assembly andciliogenesis37,38EXT2 is a glycosyltransferase, which plays a role in heparan sulfate biosynthesis. Heparan sulfate in turn influences angiogenesis and cell proliferation; mutations in this gene cause multiple exotoses39,40. |
rs76343893q27.3SNP location: Lies within an intron of the ST6GAL1. | Risk allele is in strong LD (r2>0.9 in our samples, HapMap Europeans and Asians) with variants associated with decreased expression levels of ST6GAL1 in peripheral blood cells (rs3821819; P=5.96 × 10−20) and B-cells (rs17776120; P=1.61 × 10−7).This SNP and others in LD may affect chromatin structure and protein binding. | IgG glycosylation, Type 2 diabetes, oesophageal cancer.Drug-induced liver injury.In moderate LD with rs11710456 in IgG glycosylation in Europeans (r2=0.528) but not Asians (r2=0.12). | ST6GAL1 encodes ST6 beta-galactosamide alpha-2,6-sialyltranferase, a member of glycosyltransferase family involved in the generation of the cell-surface carbohydrate determinants and differentiation antigens.Regulates macrophage apoptosis via alpha2-6 sialylation of the TNFR1 death receptor.May play a regulatory role in innate immune response.Up-regulated in human cancers41,42. |
rs20335628q22.3SNP location: Located in an intergenic region closest to the genes ODF1, KLF10 and UBR5. | No evidence for effects on gene expression levels in peripheral blood cells, monocytes, B-cells.In LD with SNPs with potential regulatory effects on UBR5 expression, chromatin structure and protein binding. | Chronic lymphocytic leukaemia (CLL)Not in LD with CLL-associated SNP. | KLF10 encodes a transcriptional repressor that acts as an effector of transforming growth factor beta signalling and activity of this protein may inhibit the growth of cancers.UBR5 encodes a E3 ubiquitin ligase which interacts with the deubiquitinase DUBA which in turns plays a role in IL-17 production in T-cells and inflammatory response in the small intestine43. |
SNP, single-nucleotide polymorphism.
Other recently and previously reported loci are described in Supplementary Table 13.