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dbSNP Short Genetic Variations

Welcome to the Reference SNP (rs) Report

All alleles are reported in the Forward orientation. Click on the Variant Details tab for details on Genomic Placement, Gene, and Amino Acid changes. HGVS names are in the HGVS tab.

Reference SNP (rs) Report

This page reports data for a single dbSNP Reference SNP variation (RefSNP or rs) from the new redesigned dbSNP build.
Top of the page reports a concise summary for the rs, with more specific details included in the corresponding tabs below.
All alleles are reported in the Forward orientation. Use the Genomic View to inspect the nucleotides flanking the variant, and its neighbors.
For more information see Help documentation.


Current Build 155

Released April 9, 2021

Homo sapiens
chr8:18400641 (GRCh38.p13) Help

The anchor position for this RefSNP. Includes all nucleotides potentially affected by this change, thus it can differ from HGVS, which is right-shifted. See here for details.

Variation Type
SNV Single Nucleotide Variation
T=0.000552 (146/264690, TOPMED)
T=0.000163 (41/251000, GnomAD_exome)
T=0.000042 (7/168544, ALFA) (+ 8 more)
T=0.000464 (65/140158, GnomAD)
T=0.000198 (24/121080, ExAC)
T=0.00079 (62/78700, PAGE_STUDY)
T=0.00054 (7/13006, GO-ESP)
T=0.0006 (3/5008, 1000G)
T=0.0027 (9/3286, PRJNA289433)
C=0.5 (1/2, SGDP_PRJ)
T=0.5 (1/2, SGDP_PRJ)
Clinical Significance
Not Reported in ClinVar
Gene : Consequence
NAT2 : Missense Variant
0 citations
Genomic View
See rs on genome

ALFA Allele Frequency
The ALFA project provide aggregate allele frequency from dbGaP. More information is available on the project page including descriptions, data access, and terms of use.

Release Version: 20201027095038
Population Group Sample Size Ref Allele Alt Allele
Total Global 168544 C=0.999958 T=0.000042
European Sub 146850 C=0.999993 T=0.000007
African Sub 4292 C=0.9988 T=0.0012
African Others Sub 168 C=1.000 T=0.000
African American Sub 4124 C=0.9988 T=0.0012
Asian Sub 6294 C=1.0000 T=0.0000
East Asian Sub 4476 C=1.0000 T=0.0000
Other Asian Sub 1818 C=1.0000 T=0.0000
Latin American 1 Sub 440 C=1.000 T=0.000
Latin American 2 Sub 950 C=1.000 T=0.000
South Asian Sub 280 C=1.000 T=0.000
Other Sub 9438 C=0.9999 T=0.0001


Frequency tab displays a table of the reference and alternate allele frequencies reported by various studies and populations. Table lines, where Population="Global" refer to the entire study population, whereas lines, where Group="Sub", refer to a study-specific population subgroupings (i.e. AFR, CAU, etc.), if available. Frequency for the alternate allele (Alt Allele) is a ratio of samples observed-to-total, where the numerator (observed samples) is the number of chromosomes in the study with the minor allele present (found in "Sample size", where Group="Sub"), and the denominator (total samples) is the total number of all chromosomes in the study for the variant (found in "Sample size", where Group="Study-wide" and Population="Global").

Study Population Group Sample Size Ref Allele Alt Allele
TopMed Global Study-wide 264690 C=0.999448 T=0.000552
gnomAD - Exomes Global Study-wide 251000 C=0.999837 T=0.000163
gnomAD - Exomes European Sub 135084 C=1.000000 T=0.000000
gnomAD - Exomes Asian Sub 49000 C=1.00000 T=0.00000
gnomAD - Exomes American Sub 34554 C=0.99991 T=0.00009
gnomAD - Exomes African Sub 16172 C=0.99765 T=0.00235
gnomAD - Exomes Ashkenazi Jewish Sub 10078 C=1.00000 T=0.00000
gnomAD - Exomes Other Sub 6112 C=1.0000 T=0.0000
gnomAD - Genomes Global Study-wide 140158 C=0.999536 T=0.000464
gnomAD - Genomes European Sub 75912 C=1.00000 T=0.00000
gnomAD - Genomes African Sub 41998 C=0.99852 T=0.00148
gnomAD - Genomes American Sub 13650 C=0.99993 T=0.00007
gnomAD - Genomes Ashkenazi Jewish Sub 3318 C=1.0000 T=0.0000
gnomAD - Genomes East Asian Sub 3128 C=1.0000 T=0.0000
gnomAD - Genomes Other Sub 2152 C=0.9991 T=0.0009
ExAC Global Study-wide 121080 C=0.999802 T=0.000198
ExAC Europe Sub 73272 C=1.00000 T=0.00000
ExAC Asian Sub 25148 C=1.00000 T=0.00000
ExAC American Sub 11536 C=0.99983 T=0.00017
ExAC African Sub 10216 C=0.99785 T=0.00215
ExAC Other Sub 908 C=1.000 T=0.000
The PAGE Study Global Study-wide 78700 C=0.99921 T=0.00079
The PAGE Study AfricanAmerican Sub 32514 C=0.99840 T=0.00160
The PAGE Study Mexican Sub 10810 C=0.99981 T=0.00019
The PAGE Study Asian Sub 8318 C=1.0000 T=0.0000
The PAGE Study PuertoRican Sub 7918 C=0.9997 T=0.0003
The PAGE Study NativeHawaiian Sub 4534 C=1.0000 T=0.0000
The PAGE Study Cuban Sub 4230 C=1.0000 T=0.0000
The PAGE Study Dominican Sub 3828 C=0.9990 T=0.0010
The PAGE Study CentralAmerican Sub 2450 C=0.9996 T=0.0004
The PAGE Study SouthAmerican Sub 1982 C=1.0000 T=0.0000
The PAGE Study NativeAmerican Sub 1260 C=0.9992 T=0.0008
The PAGE Study SouthAsian Sub 856 C=1.000 T=0.000
GO Exome Sequencing Project Global Study-wide 13006 C=0.99946 T=0.00054
GO Exome Sequencing Project European American Sub 8600 C=1.0000 T=0.0000
GO Exome Sequencing Project African American Sub 4406 C=0.9984 T=0.0016
1000Genomes Global Study-wide 5008 C=0.9994 T=0.0006
1000Genomes African Sub 1322 C=0.9977 T=0.0023
1000Genomes East Asian Sub 1008 C=1.0000 T=0.0000
1000Genomes Europe Sub 1006 C=1.0000 T=0.0000
1000Genomes South Asian Sub 978 C=1.000 T=0.000
1000Genomes American Sub 694 C=1.000 T=0.000
MxGDAR/Encodat-PGx Global Study-wide 3286 C=0.9973 T=0.0027
MxGDAR/Encodat-PGx MxGDAR Sub 3286 C=0.9973 T=0.0027
SGDP_PRJ Global Study-wide 2 C=0.5 T=0.5

Variant Details tab shows known variant placements on genomic sequences: chromosomes (NC_), RefSeqGene, pseudogenes or genomic regions (NG_), and in a separate table: on transcripts (NM_) and protein sequences (NP_). The corresponding transcript and protein locations are listed in adjacent lines, along with molecular consequences from Sequence Ontology. When no protein placement is available, only the transcript is listed. Column "Codon[Amino acid]" shows the actual base change in the format of "Reference > Alternate" allele, including the nucleotide codon change in transcripts, and the amino acid change in proteins, respectively, allowing for known ribosomal slippage sites. To view nucleotides adjacent to the variant use the Genomic View at the bottom of the page - zoom into the sequence until the nucleotides around the variant become visible.

Genomic Placements
Sequence name Change
GRCh38.p13 chr 8 NC_000008.11:g.18400641C>T
GRCh37.p13 chr 8 NC_000008.10:g.18258151C>T
NAT2 RefSeqGene NG_012246.1:g.14397C>T
Gene: NAT2, N-acetyltransferase 2 (plus strand)
Molecule type Change Amino acid[Codon] SO Term
NAT2 transcript NM_000015.3:c.638C>T P [CCA] > L [CTA] Coding Sequence Variant
arylamine N-acetyltransferase 2 NP_000006.2:p.Pro213Leu P (Pro) > L (Leu) Missense Variant
NAT2 transcript variant X1 XM_017012938.1:c.638C>T P [CCA] > L [CTA] Coding Sequence Variant
arylamine N-acetyltransferase 2 isoform X1 XP_016868427.1:p.Pro213Leu P (Pro) > L (Leu) Missense Variant

Clinical Significance tab shows a list of clinical significance entries from ClinVar associated with the variation, per allele. Click on the RCV accession (i.e. RCV000001615.2) or Allele ID (i.e. 12274) to access full ClinVar report.

Not Reported in ClinVar

Aliases tab displays HGVS names representing the variant placements and allele changes on genomic, transcript and protein sequences, per allele. HGVS name is an expression for reporting sequence accession and version, sequence type, position, and allele change. The column "Note" can have two values: "diff" means that there is a difference between the reference allele (variation interval) at the placement reported in HGVS name and the reference alleles reported in other HGVS names, and "rev" means that the sequence of this variation interval at the placement reported in HGVS name is in reverse orientation to the sequence(s) of this variation in other HGVS names not labeled as "rev".

Placement C= T
GRCh38.p13 chr 8 NC_000008.11:g.18400641= NC_000008.11:g.18400641C>T
GRCh37.p13 chr 8 NC_000008.10:g.18258151= NC_000008.10:g.18258151C>T
NAT2 RefSeqGene NG_012246.1:g.14397= NG_012246.1:g.14397C>T
NAT2 transcript NM_000015.3:c.638= NM_000015.3:c.638C>T
NAT2 transcript NM_000015.2:c.638= NM_000015.2:c.638C>T
NAT2 transcript variant X1 XM_017012938.1:c.638= XM_017012938.1:c.638C>T
arylamine N-acetyltransferase 2 NP_000006.2:p.Pro213= NP_000006.2:p.Pro213Leu
arylamine N-acetyltransferase 2 isoform X1 XP_016868427.1:p.Pro213= XP_016868427.1:p.Pro213Leu

Submissions tab displays variations originally submitted to dbSNP, now supporting this RefSNP cluster (rs). We display Submitter handle, Submission identifier, Date and Build number, when the submission appeared for the first time. Direct submissions to dbSNP have Submission ID in the form of an ss-prefixed number (ss#). Other supporting variations are listed in the table without ss#.

33 SubSNP, 10 Frequency submissions
No Submitter Submission ID Date (Build)
1 NHLBI-ESP ss342253615 May 09, 2011 (134)
2 EXOME_CHIP ss491410767 May 04, 2012 (137)
3 ILLUMINA ss780867831 Sep 08, 2015 (146)
4 ILLUMINA ss783552762 Sep 08, 2015 (146)
5 1000GENOMES ss1328853918 Aug 21, 2014 (142)
6 EVA_EXAC ss1689107906 Apr 01, 2015 (144)
7 ILLUMINA ss1752722193 Sep 08, 2015 (146)
8 ILLUMINA ss1917826211 Feb 12, 2016 (147)
9 ILLUMINA ss1946231118 Feb 12, 2016 (147)
10 ILLUMINA ss1959092413 Feb 12, 2016 (147)
11 HUMAN_LONGEVITY ss2301164566 Dec 20, 2016 (150)
12 TOPMED ss2470822164 Dec 20, 2016 (150)
13 GNOMAD ss2737016747 Nov 08, 2017 (151)
14 GNOMAD ss2748005959 Nov 08, 2017 (151)
15 GNOMAD ss2863932617 Nov 08, 2017 (151)
16 AFFY ss2985432620 Nov 08, 2017 (151)
17 ILLUMINA ss3022824460 Nov 08, 2017 (151)
18 TOPMED ss3555514779 Nov 08, 2017 (151)
19 ILLUMINA ss3630009732 Oct 12, 2018 (152)
20 ILLUMINA ss3635161291 Oct 12, 2018 (152)
21 ILLUMINA ss3640868581 Oct 12, 2018 (152)
22 ILLUMINA ss3644964292 Oct 12, 2018 (152)
23 ILLUMINA ss3653365290 Oct 12, 2018 (152)
24 ILLUMINA ss3654194411 Oct 12, 2018 (152)
25 ILLUMINA ss3726518841 Jul 13, 2019 (153)
26 ILLUMINA ss3744577639 Jul 13, 2019 (153)
27 ILLUMINA ss3745461081 Jul 13, 2019 (153)
28 PAGE_CC ss3771427494 Jul 13, 2019 (153)
29 ILLUMINA ss3772953679 Jul 13, 2019 (153)
30 EVA ss3824350634 Apr 26, 2020 (154)
31 SGDP_PRJ ss3869405016 Apr 26, 2020 (154)
32 EVA ss3984448909 Apr 26, 2021 (155)
33 TOPMED ss4777605089 Apr 26, 2021 (155)
34 1000Genomes NC_000008.10 - 18258151 Oct 12, 2018 (152)
35 ExAC NC_000008.10 - 18258151 Oct 12, 2018 (152)
36 gnomAD - Genomes NC_000008.11 - 18400641 Apr 26, 2021 (155)
37 gnomAD - Exomes NC_000008.10 - 18258151 Jul 13, 2019 (153)
38 GO Exome Sequencing Project NC_000008.10 - 18258151 Oct 12, 2018 (152)
39 The PAGE Study NC_000008.11 - 18400641 Jul 13, 2019 (153)
40 MxGDAR/Encodat-PGx NC_000008.10 - 18258151 Apr 26, 2021 (155)
41 SGDP_PRJ NC_000008.10 - 18258151 Apr 26, 2020 (154)
42 TopMed NC_000008.11 - 18400641 Apr 26, 2021 (155)
43 ALFA NC_000008.11 - 18400641 Apr 26, 2021 (155)

History tab displays RefSNPs (Associated ID) from previous builds (Build) that now support the current RefSNP, and the dates, when the history was updated for each Associated ID (History Updated).

Added to this RefSNP Cluster:
Submission IDs Observation SPDI Canonical SPDI Source RSIDs
40947100, 9201265, 6184693, 808492, 1910, 21421996, ss342253615, ss491410767, ss780867831, ss783552762, ss1328853918, ss1689107906, ss1752722193, ss1917826211, ss1946231118, ss1959092413, ss2470822164, ss2737016747, ss2748005959, ss2863932617, ss2985432620, ss3022824460, ss3630009732, ss3635161291, ss3640868581, ss3644964292, ss3653365290, ss3654194411, ss3744577639, ss3745461081, ss3772953679, ss3824350634, ss3869405016, ss3984448909 NC_000008.10:18258150:C:T NC_000008.11:18400640:C:T (self)
288783726, 648963, 384382904, 614982649, 8805314737, ss2301164566, ss3555514779, ss3726518841, ss3771427494, ss4777605089 NC_000008.11:18400640:C:T NC_000008.11:18400640:C:T (self)

Publications tab displays PubMed articles citing the variation as a listing of PMID, Title, Author, Year, Journal, ordered by Year, descending.

No publications for rs138707146


The Flanks tab provides retrieving flanking sequences of a SNP on all molecules that have placements.

Genome context:
Select flank length:

Genomic regions, transcripts, and products
Top Help

NCBI Graphical Sequence Viewer display of the genomic region, transcripts and protein products for the reported RefSNP (rs).
Use the zoom option to view the nucleotides around the RefSNP and find other neighboring RefSNPs.
Visit Sequence Viewer for help with navigating inside the display and modifying the selection of displayed data tracks.

Software version is: 2.0.1.post629+eb05767