rs147998249

This variant is located in the GPT gene.

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GWAS Catalog Trait Associations (2)

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

aspartate aminotransferase to alanine aminotransferase ratio

Sinnott-Armstrong N et al. “Genetics of 35 blood and urine biomarkers in the UK Biobank.” Nature Genetics 53(2):185-194 (2021)
Allele C
OR 1.55
p —
N 354,455
Major Consortium StudyLarge 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 C
OR 1.52
p —
N 928,679
Large GWAS
multi-ancestry
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 C
OR 1.25
p 9.9e-324
N 406,783
Major Consortium StudyLarge GWAS
European
Sinnott-Armstrong N et al. “Genetics of 35 blood and urine biomarkers in the UK Biobank.” Nature Genetics 53(2):185-194 (2021)
Allele C
OR 1.28
p —
N 355,729
Major Consortium StudyLarge 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 C
OR 2.02
p 8.0e-61
N 164,197
Large GWAS
European
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ClinVar annotation

Likely Benign★★★☆
2 submitters1 publication
View on ClinVar →

About GPT

This gene encodes cytosolic alanine aminotransaminase 1 (ALT1); also known as glutamate-pyruvate transaminase 1. This enzyme catalyzes the reversible transamination between alanine and 2-oxoglutarate to generate pyruvate and glutamate and, therefore, plays a key role in the intermediary metabolism of glucose and amino acids. Serum activity levels of this enzyme are routinely used as a biomarker of liver injury caused by drug toxicity, infection, alcohol, and steatosis. A related gene on chromosome 16 encodes a putative mitochondrial alanine aminotransaminase.[provided by RefSeq, Nov 2009]

View all GPT variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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