{{Rsnum
|rsid=4800488
|Gene=NPC1
|Chromosome=18
|position=23537607
|Orientation=plus
|GMAF=0.4899
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;C)
|geno3=(C;C)
|Gene_s=NPC1
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;C)
| geno3=(C;C)
| CEU | 25.7 | 54.0 | 20.4
| HCB | 41.6 | 43.1 | 15.3
| JPT | 53.6 | 40.2 | 6.2
| YRI | 14.3 | 48.3 | 37.4
| ASW | 21.1 | 42.1 | 36.8
| CHB | 41.6 | 43.1 | 15.3
| CHD | 41.3 | 50.5 | 8.3
| GIH | 26.3 | 55.6 | 18.2
| LWK | 15.6 | 50.5 | 33.9
| MEX | 31.0 | 37.9 | 31.0
| MKK | 20.5 | 47.4 | 32.1
| TSI | 11.8 | 43.1 | 45.1
| HapMapRevision=28
}}{{PMID Auto
|PMID=20571217
|Title=Epistasis Between Intracellular Cholesterol Trafficking-Related Genes (NPC1 and ABCA1) and Alzheimer's Disease Risk
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Illumina Human 1M}}