rs2073547

This is a upstream gene variant variant in the NPC1L1 gene.

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GWAS Catalog Trait Associations (10)

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

low density lipoprotein cholesterol measurement

Klimentidis YC et al. “Phenotypic and Genetic Characterization of Lower LDL Cholesterol and Increased Type 2 Diabetes Risk in the UK Biobank.” Diabetes 69(10):2194-2205 (2020)
Allele A
OR 0.05
p 4.0e-88
N 431,167
Major Consortium StudyLarge 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 A
OR 0.04
p 2.0e-40
N 440,546
Large GWAS
European
Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele A
OR 0.03
p 5.0e-36
N 394,642
Large GWAS
European
Hoffmann TJ et al. “A large electronic-health-record-based genome-wide study of serum lipids.” Nature Genetics 50(3):401-413 (2018)
Allele A
OR —
β 0.038
p 5.0e-9
N 94,674
Large GWAS
multi-ancestry

total cholesterol measurement

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 7.0e-31
N 394,642
Large GWAS
European

Hypercholesterolemia

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 0.05
p 6.0e-15
N 404,034
Major Consortium StudyLarge GWAS
multi-ancestry
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ClinVar annotation

Drug Response
1 submitter

Statins, attenuated cholesterol lowering by

View on ClinVar →

About NPC1L1

The protein encoded by this gene is a multi-pass membrane protein. It contains a conserved N-terminal Niemann-Pick C1 (NPC1) domain and a putative sterol-sensing domain (SSD) which includes a YQRL motif functioning as a plasma membrane to trans-Golgi network transport signal in other proteins. This protein takes up free cholesterol into cells through vesicular endocytosis and plays a critical role in the absorption of intestinal cholesterol. It also has the ability to transport alpha-tocopherol (vitamin E). The drug ezetimibe targets this protein and inhibits the absorption of intestinal cholesterol and alpha-tocopherol. In addition, this protein may play a critical role in regulating lipid metabolism. Polymorphic variations in this gene are associated with plasma total cholesterol and low-density lipoprotein cholesterol (LDL-C) levels and coronary heart disease (CHD) risk. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

View all NPC1L1 variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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