rs2642438

This is a protein-altering variant in the MTARC1 gene.

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GWAS Catalog Trait Associations (152)

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

high density lipoprotein cholesterol measurement

Jee YH et al. “Genome-wide association studies in a large Korean cohort identify quantitative trait loci for 36 traits and illuminate their genetic architectures.” Nature Communications 16(1):4935 (2025)
Allele A
OR 0.03
p 3.0e-66
N 928,679
Large GWAS
multi-ancestry
Graham SE et al. “The power of genetic diversity in genome-wide association studies of lipids.” Nature 600(7890):675-679 (2021)
Allele A
OR 0.03
p 1.0e-42
N 1,320,016
Large GWAS
European
Verma A et al. “Diversity and scale: Genetic architecture of 2068 traits in the VA Million Veteran Program.” Science (new York, N.y.) 385(6706):eadj1182 (2024)
Allele A
OR 0.04
p 2.0e-21
N 578,125
Major Consortium StudyLarge GWAS
multi-ancestry
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 2.0e-49
N 450,015
Large GWAS
multi-ancestry
Richardson TG et al. “Evaluating the relationship between circulating lipoprotein lipids and apolipoproteins with risk of coronary heart disease: A multivariable Mendelian randomisation analysis.” Plos Medicine 17(3):e1003062 (2020)
Allele A
OR 0.03
p 2.0e-40
N 403,943
Large GWAS
European
Sakaue S et al. “A cross-population atlas of genetic associations for 220 human phenotypes.” Nature Genetics 53(10):1415-1424 (2021)
Allele A
OR 0.03
p 4.0e-34
N 390,103
Large GWAS
multi-ancestry
Koskeridis F et al. “Pleiotropic genetic architecture and novel loci for C-reactive protein levels.” Nature Communications 13(1):6939 (2022)
Allele A
OR 0.03
p 2.0e-27
N 361,194
Large GWAS
European
Klarin D et al. “Genetics of blood lipids among ~300,000 multi-ethnic participants of the Million Veteran Program.” Nature Genetics 50(11):1514-1523 (2018)
Allele A
OR 0.02
p 6.0e-13
N 297,626
Major Consortium StudyLarge GWAS
multi-ancestry
Kim YJ et al. “The contribution of common and rare genetic variants to variation in metabolic traits in 288,137 East Asians.” Nature Communications 13(1):6642 (2022)
Allele A
OR 0.03
p 4.0e-14
N 288,127
Large GWAS
East Asian
Karjalainen MK et al. “Genome-wide characterization of circulating metabolic biomarkers.” Nature 628(8006):130-138 (2024)
Allele A
OR 0.03
p 3.0e-15
N 136,016
Large GWAS
multi-ancestry
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 2.0e-16
N 115,082
Large GWAS
European
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele A
OR 0.03
p 1.0e-11
N 88,329
Large GWAS
European
de Vries PS et al. “Multiancestry Genome-Wide Association Study of Lipid Levels Incorporating Gene-Alcohol Interactions.” American Journal of Epidemiology 188(6):1033-1054 (2019)
Allele A
OR —
β 0.007
p 2.0e-8
N 71,394
Large GWAS
multi-ancestry

serum alanine aminotransferase amount

Jee YH et al. “Genome-wide association studies in a large Korean cohort identify quantitative trait loci for 36 traits and illuminate their genetic architectures.” Nature Communications 16(1):4935 (2025)
Allele A
OR 0.03
p 2.0e-64
N 928,679
Large GWAS
multi-ancestry
Ghouse J et al. “Integrative common and rare variant analyses provide insights into the genetic architecture of liver cirrhosis.” Nature Genetics 56(5):827-837 (2024)
Allele A
OR 0.01
p 3.0e-62
N 1,010,710
Large GWAS
European
Sakaue S et al. “A cross-population atlas of genetic associations for 220 human phenotypes.” Nature Genetics 53(10):1415-1424 (2021)
Allele A
OR 0.03
p 1.0e-34
N 494,681
Large GWAS
multi-ancestry
Pazoki R et al. “Genetic analysis in European ancestry individuals identifies 517 loci associated with liver enzymes.” Nature Communications 12(1):2579 (2021)
Allele A
OR 0.01
p 6.0e-57
N 437,267
Large GWAS
European
Verma A et al. “Diversity and scale: Genetic architecture of 2068 traits in the VA Million Veteran Program.” Science (new York, N.y.) 385(6706):eadj1182 (2024)
Allele A
OR 0.04
p 6.0e-42
N 406,783
Major Consortium StudyLarge GWAS
European
Chen VL et al. “Genome-wide association study of serum liver enzymes implicates diverse metabolic and liver pathology.” Nature Communications 12(1):816 (2021)
Allele A
OR 11.70
p 1.0e-31
N 390,812
Large GWAS
multi-ancestry
Vujkovic M et al. “A multiancestry genome-wide association study of unexplained chronic ALT elevation as a proxy for nonalcoholic fatty liver disease with histological and radiological validation.” Nature Genetics 54(6):761-771 (2022)
Allele A
OR 0.07
p 7.0e-24
N 218,595
Large GWAS
multi-ancestry

free cholesterol in medium 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 G
OR 0.03
p 4.0e-57
N 450,015
Large GWAS
multi-ancestry
Karjalainen MK et al. “Genome-wide characterization of circulating metabolic biomarkers.” Nature 628(8006):130-138 (2024)
Allele G
OR 0.04
p 3.0e-16
N 136,016
Large GWAS
multi-ancestry
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 5.0e-16
N 88,329
Large GWAS
European

phospholipids in 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 G
OR 0.03
p 7.0e-55
N 450,015
Large GWAS
multi-ancestry
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 3.0e-15
N 88,329
Large GWAS
European

apolipoprotein A 1 measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele G
OR 0.03
p 2.0e-54
N 450,015
Large GWAS
multi-ancestry
Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele G
OR 0.03
p 8.0e-41
N 394,642
Large GWAS
European
Richardson TG et al. “Evaluating the relationship between circulating lipoprotein lipids and apolipoproteins with risk of coronary heart disease: A multivariable Mendelian randomisation analysis.” Plos Medicine 17(3):e1003062 (2020)
Allele G
OR 0.03
p 4.0e-42
N 393,193
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 G
OR 0.04
p 9.0e-18
N 115,082
Large GWAS
European
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 5.0e-15
N 88,329
Large GWAS
European

total lipids in 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 G
OR 0.03
p 9.0e-54
N 450,015
Large GWAS
multi-ancestry
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 2.0e-15
N 88,329
Large GWAS
European

free cholesterol in 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 G
OR 0.03
p 6.0e-53
N 450,015
Large GWAS
multi-ancestry
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 3.0e-16
N 88,329
Large GWAS
European

concentration of medium HDL particles measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele G
OR 0.03
p 9.0e-53
N 450,015
Large GWAS
multi-ancestry

total lipids in medium 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 G
OR 0.03
p 3.0e-51
N 450,015
Large GWAS
multi-ancestry
Karjalainen MK et al. “Genome-wide characterization of circulating metabolic biomarkers.” Nature 628(8006):130-138 (2024)
Allele G
OR 0.03
p 2.0e-15
N 136,016
Large GWAS
multi-ancestry
Davyson E et al. “Metabolomic Investigation of Major Depressive Disorder Identifies a Potentially Causal Association With Polyunsaturated Fatty Acids.” Biological Psychiatry 94(8):630-639 (2023)
Allele G
OR 0.04
p 4.0e-14
N 88,329
Large GWAS
European

HDL cholesterol change measurement

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele G
OR 0.03
p 1.0e-50
N 450,015
Large GWAS
multi-ancestry

About MTARC1

Enables molybdenum ion binding activity; molybdopterin cofactor binding activity; and oxidoreductase activity, acting on other nitrogenous compounds as donors. Contributes to nitrite reductase (NO-forming) activity. Involved in cellular detoxification of nitrogen compound; nitrate metabolic process; and nitric oxide biosynthetic process. Located in mitochondrion. Part of nitric-oxide synthase complex. [provided by Alliance of Genome Resources, Jul 2025]

View all MTARC1 variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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