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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
chr8:18400124 (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=0.000257 (68/264690, TOPMED)
T=0.000095 (24/251356, GnomAD_exome)
T=0.000178 (25/140238, GnomAD) (+ 6 more)
T=0.000124 (15/121328, ExAC)
T=0.000064 (7/109842, ALFA)
T=0.00055 (43/78698, PAGE_STUDY)
T=0.00038 (5/13006, GO-ESP)
T=0.0002 (1/5008, 1000G)
T=0.0012 (4/3288, PRJNA289433)
Clinical Significance
Not Reported in ClinVar
Gene : Consequence
NAT2 : Missense Variant
0 citations
Genomic View
See rs on genome

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.18400124A>T
GRCh37.p13 chr 8 NC_000008.10:g.18257634A>T
NAT2 RefSeqGene NG_012246.1:g.13880A>T
Gene: NAT2, N-acetyltransferase 2 (plus strand)
Molecule type Change Amino acid[Codon] SO Term
NAT2 transcript NM_000015.3:c.121A>T N [AAC] > Y [TAC] Coding Sequence Variant
arylamine N-acetyltransferase 2 NP_000006.2:p.Asn41Tyr N (Asn) > Y (Tyr) Missense Variant
NAT2 transcript variant X1 XM_017012938.1:c.121A>T N [AAC] > Y [TAC] Coding Sequence Variant
arylamine N-acetyltransferase 2 isoform X1 XP_016868427.1:p.Asn41Tyr N (Asn) > Y (Tyr) 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

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 109842 A=0.999936 T=0.000064
European Sub 92342 A=0.99999 T=0.00001
African Sub 4312 A=0.9995 T=0.0005
African Others Sub 174 A=1.000 T=0.000
African American Sub 4138 A=0.9995 T=0.0005
Asian Sub 3330 A=1.0000 T=0.0000
East Asian Sub 2674 A=1.0000 T=0.0000
Other Asian Sub 656 A=1.000 T=0.000
Latin American 1 Sub 790 A=0.995 T=0.005
Latin American 2 Sub 946 A=1.000 T=0.000
South Asian Sub 274 A=1.000 T=0.000
Other Sub 7848 A=1.0000 T=0.0000


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 A=0.999743 T=0.000257
gnomAD - Exomes Global Study-wide 251356 A=0.999905 T=0.000095
gnomAD - Exomes European Sub 135328 A=1.000000 T=0.000000
gnomAD - Exomes Asian Sub 49008 A=1.00000 T=0.00000
gnomAD - Exomes American Sub 34562 A=0.99991 T=0.00009
gnomAD - Exomes African Sub 16244 A=0.99871 T=0.00129
gnomAD - Exomes Ashkenazi Jewish Sub 10080 A=1.00000 T=0.00000
gnomAD - Exomes Other Sub 6134 A=1.0000 T=0.0000
gnomAD - Genomes Global Study-wide 140238 A=0.999822 T=0.000178
gnomAD - Genomes European Sub 75954 A=1.00000 T=0.00000
gnomAD - Genomes African Sub 42032 A=0.99945 T=0.00055
gnomAD - Genomes American Sub 13648 A=0.99985 T=0.00015
gnomAD - Genomes Ashkenazi Jewish Sub 3320 A=1.0000 T=0.0000
gnomAD - Genomes East Asian Sub 3130 A=1.0000 T=0.0000
gnomAD - Genomes Other Sub 2154 A=1.0000 T=0.0000
ExAC Global Study-wide 121328 A=0.999876 T=0.000124
ExAC Europe Sub 73304 A=1.00000 T=0.00000
ExAC Asian Sub 25164 A=1.00000 T=0.00000
ExAC American Sub 11550 A=0.99991 T=0.00009
ExAC African Sub 10402 A=0.99865 T=0.00135
ExAC Other Sub 908 A=1.000 T=0.000
The PAGE Study Global Study-wide 78698 A=0.99945 T=0.00055
The PAGE Study AfricanAmerican Sub 32514 A=0.99905 T=0.00095
The PAGE Study Mexican Sub 10810 A=1.00000 T=0.00000
The PAGE Study Asian Sub 8318 A=1.0000 T=0.0000
The PAGE Study PuertoRican Sub 7918 A=0.9997 T=0.0003
The PAGE Study NativeHawaiian Sub 4534 A=1.0000 T=0.0000
The PAGE Study Cuban Sub 4228 A=1.0000 T=0.0000
The PAGE Study Dominican Sub 3828 A=0.9976 T=0.0024
The PAGE Study CentralAmerican Sub 2450 A=1.0000 T=0.0000
The PAGE Study SouthAmerican Sub 1982 A=1.0000 T=0.0000
The PAGE Study NativeAmerican Sub 1260 A=0.9992 T=0.0008
The PAGE Study SouthAsian Sub 856 A=1.000 T=0.000
GO Exome Sequencing Project Global Study-wide 13006 A=0.99962 T=0.00038
GO Exome Sequencing Project European American Sub 8600 A=1.0000 T=0.0000
GO Exome Sequencing Project African American Sub 4406 A=0.9989 T=0.0011
1000Genomes Global Study-wide 5008 A=0.9998 T=0.0002
1000Genomes African Sub 1322 A=0.9992 T=0.0008
1000Genomes East Asian Sub 1008 A=1.0000 T=0.0000
1000Genomes Europe Sub 1006 A=1.0000 T=0.0000
1000Genomes South Asian Sub 978 A=1.000 T=0.000
1000Genomes American Sub 694 A=1.000 T=0.000
MxGDAR/Encodat-PGx Global Study-wide 3288 A=0.9988 T=0.0012
MxGDAR/Encodat-PGx MxGDAR Sub 3288 A=0.9988 T=0.0012

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 A= T
GRCh38.p13 chr 8 NC_000008.11:g.18400124= NC_000008.11:g.18400124A>T
GRCh37.p13 chr 8 NC_000008.10:g.18257634= NC_000008.10:g.18257634A>T
NAT2 RefSeqGene NG_012246.1:g.13880= NG_012246.1:g.13880A>T
NAT2 transcript NM_000015.3:c.121= NM_000015.3:c.121A>T
NAT2 transcript NM_000015.2:c.121= NM_000015.2:c.121A>T
NAT2 transcript variant X1 XM_017012938.1:c.121= XM_017012938.1:c.121A>T
arylamine N-acetyltransferase 2 NP_000006.2:p.Asn41= NP_000006.2:p.Asn41Tyr
arylamine N-acetyltransferase 2 isoform X1 XP_016868427.1:p.Asn41= XP_016868427.1:p.Asn41Tyr

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#.

32 SubSNP, 9 Frequency submissions
No Submitter Submission ID Date (Build)
1 NHLBI-ESP ss342253599 May 09, 2011 (134)
2 EXOME_CHIP ss491410752 May 04, 2012 (137)
3 ILLUMINA ss780867820 Aug 21, 2014 (142)
4 ILLUMINA ss783552751 Aug 21, 2014 (142)
5 1000GENOMES ss1328853890 Aug 21, 2014 (142)
6 EVA_EXAC ss1689107796 Apr 01, 2015 (144)
7 ILLUMINA ss1752722176 Sep 08, 2015 (146)
8 ILLUMINA ss1917826200 Feb 12, 2016 (147)
9 ILLUMINA ss1946231103 Feb 12, 2016 (147)
10 ILLUMINA ss1959092392 Feb 12, 2016 (147)
11 HUMAN_LONGEVITY ss2301164523 Dec 20, 2016 (150)
12 TOPMED ss2470822122 Dec 20, 2016 (150)
13 GNOMAD ss2737016589 Nov 08, 2017 (151)
14 GNOMAD ss2748005905 Nov 08, 2017 (151)
15 GNOMAD ss2863932563 Nov 08, 2017 (151)
16 AFFY ss2985432607 Nov 08, 2017 (151)
17 ILLUMINA ss3022824443 Nov 08, 2017 (151)
18 TOPMED ss3555514675 Nov 08, 2017 (151)
19 ILLUMINA ss3630009709 Oct 12, 2018 (152)
20 ILLUMINA ss3635161272 Oct 12, 2018 (152)
21 ILLUMINA ss3640868562 Oct 12, 2018 (152)
22 ILLUMINA ss3644964277 Oct 12, 2018 (152)
23 ILLUMINA ss3653365273 Oct 12, 2018 (152)
24 ILLUMINA ss3654194397 Oct 12, 2018 (152)
25 ILLUMINA ss3726518826 Jul 13, 2019 (153)
26 ILLUMINA ss3744577628 Jul 13, 2019 (153)
27 ILLUMINA ss3745461062 Jul 13, 2019 (153)
28 PAGE_CC ss3771427479 Jul 13, 2019 (153)
29 ILLUMINA ss3772953662 Jul 13, 2019 (153)
30 EVA ss3824350609 Apr 26, 2020 (154)
31 EVA ss3984448902 Apr 26, 2021 (155)
32 TOPMED ss4777604951 Apr 26, 2021 (155)
33 1000Genomes NC_000008.10 - 18257634 Oct 12, 2018 (152)
34 ExAC NC_000008.10 - 18257634 Oct 12, 2018 (152)
35 gnomAD - Genomes NC_000008.11 - 18400124 Apr 26, 2021 (155)
36 gnomAD - Exomes NC_000008.10 - 18257634 Jul 13, 2019 (153)
37 GO Exome Sequencing Project NC_000008.10 - 18257634 Oct 12, 2018 (152)
38 The PAGE Study NC_000008.11 - 18400124 Jul 13, 2019 (153)
39 MxGDAR/Encodat-PGx NC_000008.10 - 18257634 Apr 26, 2021 (155)
40 TopMed NC_000008.11 - 18400124 Apr 26, 2021 (155)
41 ALFA NC_000008.11 - 18400124 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
40947072, 9201149, 6184515, 808469, 1903, ss342253599, ss491410752, ss780867820, ss783552751, ss1328853890, ss1689107796, ss1752722176, ss1917826200, ss1946231103, ss1959092392, ss2470822122, ss2737016589, ss2748005905, ss2863932563, ss2985432607, ss3022824443, ss3630009709, ss3635161272, ss3640868562, ss3644964277, ss3653365273, ss3654194397, ss3744577628, ss3745461062, ss3772953662, ss3824350609, ss3984448902 NC_000008.10:18257633:A:T NC_000008.11:18400123:A:T (self)
288783607, 648948, 384382816, 614982511, 3574252779, ss2301164523, ss3555514675, ss3726518826, ss3771427479, ss4777604951 NC_000008.11:18400123:A:T NC_000008.11:18400123:A: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 rs149283608


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.post596+ae089ad