rs2072183

This is a synonymous variant in the NPC1L1 gene — it does not change the protein's amino acid sequence.

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GWAS Catalog Trait Associations (3)

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

low density lipoprotein cholesterol measurement

Willer CJ et al. “Discovery and refinement of loci associated with lipid levels.” Nature Genetics 45(11):1274-1283 (2013)
Allele A
OR —
β 0.039
p 7.0e-16
N 94,595
Large GWAS
European
Spracklen CN et al. “Association analyses of East Asian individuals and trans-ancestry analyses with European individuals reveal new loci associated with cholesterol and triglyceride levels.” Human Molecular Genetics 26(9):1770-1784 (2017)
Allele A
OR 0.04
p 2.0e-14
N 205,367
Large GWAS
multi-ancestry
Teslovich TM et al. “Biological, clinical and population relevance of 95 loci for blood lipids.” Nature 466(7307):707-713 (2010)
Allele A
OR 1.17
p 4.0e-11
N 95,454
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 0.031
p 4.0e-8
N 94,674
Large GWAS
multi-ancestry

total cholesterol measurement

Willer CJ et al. “Discovery and refinement of loci associated with lipid levels.” Nature Genetics 45(11):1274-1283 (2013)
Allele C
OR —
β 0.036
p 4.0e-15
N 94,595
Large GWAS
European
Spracklen CN et al. “Association analyses of East Asian individuals and trans-ancestry analyses with European individuals reveal new loci associated with cholesterol and triglyceride levels.” Human Molecular Genetics 26(9):1770-1784 (2017)
Allele C
OR 0.04
p 2.0e-13
N 219,941
Large GWAS
multi-ancestry
Teslovich TM et al. “Biological, clinical and population relevance of 95 loci for blood lipids.” Nature 466(7307):707-713 (2010)
Allele C
OR 2.01
p 3.0e-11
N 100,184
Large GWAS
European

total lipids in large VLDL

Zoodsma M et al. “A genetic map of human metabolism across the allele frequency spectrum.” Nature Genetics 57(10):2445-2455 (2025)
Allele C
OR 0.02
p 1.0e-12
N 450,015
Large GWAS
multi-ancestry
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ClinVar annotation

Drug Response★☆☆☆
2 submitters1 publication

Statins, attenuated cholesterol lowering by; not specified

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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