rs9378248

This is a regulatory region variant variant in the HLA-B gene.

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GWAS Catalog Trait Associations (21)

Genome-wide significant associations (p < 5×10⁻⁸) from the NHGRI-EBI GWAS Catalog.

saturated fatty acids to total fatty acids percentage

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.03
p 8.0e-49
N 450,015
Large GWAS
multi-ancestry

cholesterol to total lipids in large HDL percentage

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.03
p 1.0e-44
N 450,015
Large GWAS
multi-ancestry

cholesteryl esters to total lipids in large HDL percentage

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.03
p 9.0e-41
N 450,015
Large GWAS
multi-ancestry

polyunsaturated fatty acids to monounsaturated fatty acids ratio

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.03
p 4.0e-39
N 450,015
Large GWAS
multi-ancestry
Sun Y et al. “GWAS and multi-omics integrative analysis reveal novel loci and their molecular mechanisms for circulating fatty acids.” Hgg Advances 6(4):100470 (2025)
Allele A
OR —
p 2.0e-11
N 128,922
Large GWAS
European

free cholesterol in very large HDL measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.02
p 2.0e-36
N 450,015
Large GWAS
multi-ancestry

cholesterol in very large HDL measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.02
p 1.0e-30
N 450,015
Large GWAS
multi-ancestry

cholesteryl ester measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.02
p 2.0e-28
N 450,015
Large GWAS
multi-ancestry

fatty acid amount

Sun Y et al. “GWAS and multi-omics integrative analysis reveal novel loci and their molecular mechanisms for circulating fatty acids.” Hgg Advances 6(4):100470 (2025)
Allele A
OR —
p 5.0e-27
N 239,268
Large GWAS
European
Richardson TG et al. “Characterising metabolomic signatures of lipid-modifying therapies through drug target mendelian randomisation.” Plos Biology 20(2):e3001547 (2022)
Allele A
OR 0.03
p 5.0e-12
N 115,006
Large GWAS
European

total lipids in very large HDL measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele A
OR 0.02
p 4.0e-25
N 450,015
Large GWAS
multi-ancestry
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Research that mentions this SNP (1)

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Association of IL23R, TNFRSF1A, and HLA-DRB1*0103 allele variants with inflammatory bowel disease phenotypes in the Finnish population
AssociationN=7,457Maarit Lappalainen et al.(2008)· Inflammatory Bowel Diseases

PhD thesis describing comprehensive genome-wide association studies of acute anterior uveitis (AAU) in European (2,752 cases, 3,836 controls) and East Asian (821 cases, 4,898 controls) populations. European descent GWAS identified HLA-B at genome-wide significance plus 11 suggestive loci (ERAP1, NOS2, MERTK). East Asian GWAS identified HLA-B and ERAP1 at genome-wide significance plus 12 suggestive loci (GPR68, RHBDD2). Mendelian randomization confirmed ERAP1 as functionally relevant and showed genetically predicted CRP levels positively associated with AAU risk.

Traits studied:Acute anterior uveitis (AAU)Ankylosing spondylitis (AS)Spondyloarthropathies
PubMedDOIMetascience Observatory

About HLA-B

HLA-B belongs to the HLA class I heavy chain paralogues. This class I molecule is a heterodimer consisting of a heavy chain and a light chain (beta-2 microglobulin). The heavy chain is anchored in the membrane. Class I molecules play a central role in the immune system by presenting peptides derived from the endoplasmic reticulum lumen. They are expressed in nearly all cells. The heavy chain is approximately 45 kDa and its gene contains 8 exons. Exon 1 encodes the leader peptide, exon 2 and 3 encode the alpha1 and alpha2 domains, which both bind the peptide, exon 4 encodes the alpha3 domain, exon 5 encodes the transmembrane region and exons 6 and 7 encode the cytoplasmic tail. Polymorphisms within exon 2 and exon 3 are responsible for the peptide binding specificity of each class one molecule. Typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. Hundreds of HLA-B alleles have been described. [provided by RefSeq, Jul 2008]

View all HLA-B variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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