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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 154

Released April 21, 2020

Homo sapiens
chr3:120670582 (GRCh38.p12) 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
A=0.031714 (7900/249102, GnomAD_exome)
A=0.023366 (2934/125568, TOPMED)
A=0.031343 (3765/120124, ExAC) (+ 15 more)
A=0.02956 (928/31398, GnomAD)
A=0.02547 (331/12998, GO-ESP)
A=0.04259 (476/11176, ALFA Project)
A=0.0192 (96/5008, 1000G)
A=0.0429 (192/4480, Estonian)
A=0.0319 (123/3854, ALSPAC)
A=0.0334 (124/3708, TWINSUK)
A=0.027 (27/998, GoNL)
A=0.030 (18/600, NorthernSweden)
A=0.036 (19/534, MGP)
A=0.051 (11/216, Qatari)
A=0.07 (3/40, GENOME_DK)
G=0.45 (9/20, SGDP_PRJ)
G=0.5 (2/4, Siberian)
A=0.5 (2/4, Siberian)
Clinical Significance
Not Reported in ClinVar
Gene : Consequence
HGD : Intron 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.p12 chr 3 NC_000003.12:g.120670582G>A
GRCh37.p13 chr 3 NC_000003.11:g.120389429G>A
HGD RefSeqGene NG_011957.1:g.16900C>T
Gene: HGD, homogentisate 1,2-dioxygenase (minus strand)
Molecule type Change Amino acid[Codon] SO Term
HGD transcript NM_000187.4:c.177-50C>T N/A Intron Variant
HGD transcript variant X1 XM_005247412.2:c.177-50C>T N/A Intron Variant
HGD transcript variant X2 XM_005247413.2:c.177-50C>T N/A Intron Variant
HGD transcript variant X5 XM_005247414.5:c.177-50C>T N/A Intron Variant
HGD transcript variant X4 XM_011512746.2:c.177-50C>T N/A Intron Variant
HGD transcript variant X3 XM_017006277.2:c.-247-50C…


N/A Intron 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 (New)
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 28252 G=0.96234 A=0.03766
European Sub 20398 G=0.95774 A=0.04226
African Sub 3578 G=0.9852 A=0.0148
African Others Sub 122 G=1.000 A=0.000
African American Sub 3456 G=0.9847 A=0.0153
Asian Sub 172 G=1.000 A=0.000
East Asian Sub 114 G=1.000 A=0.000
Other Asian Sub 58 G=1.00 A=0.00
Latin American 1 Sub 154 G=0.961 A=0.039
Latin American 2 Sub 616 G=0.979 A=0.021
South Asian Sub 98 G=0.96 A=0.04
Other Sub 3236 G=0.9611 A=0.0389


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
gnomAD - Exomes Global Study-wide 249102 G=0.968286 A=0.031714
gnomAD - Exomes European Sub 133662 G=0.961679 A=0.038321
gnomAD - Exomes Asian Sub 48794 G=0.97524 A=0.02476
gnomAD - Exomes American Sub 34352 G=0.98224 A=0.01776
gnomAD - Exomes African Sub 16186 G=0.99117 A=0.00883
gnomAD - Exomes Ashkenazi Jewish Sub 10038 G=0.94511 A=0.05489
gnomAD - Exomes Other Sub 6070 G=0.9562 A=0.0438
TopMed Global Study-wide 125568 G=0.976634 A=0.023366
ExAC Global Study-wide 120124 G=0.968657 A=0.031343
ExAC Europe Sub 72646 G=0.96184 A=0.03816
ExAC Asian Sub 24898 G=0.97389 A=0.02611
ExAC American Sub 11344 G=0.98334 A=0.01666
ExAC African Sub 10336 G=0.99110 A=0.00890
ExAC Other Sub 900 G=0.931 A=0.069
gnomAD - Genomes Global Study-wide 31398 G=0.97044 A=0.02956
gnomAD - Genomes European Sub 18900 G=0.95857 A=0.04143
gnomAD - Genomes African Sub 8714 G=0.9925 A=0.0075
gnomAD - Genomes East Asian Sub 1560 G=0.9994 A=0.0006
gnomAD - Genomes Other Sub 1088 G=0.9669 A=0.0331
gnomAD - Genomes American Sub 848 G=0.978 A=0.022
gnomAD - Genomes Ashkenazi Jewish Sub 288 G=0.917 A=0.083
GO Exome Sequencing Project Global Study-wide 12998 G=0.97453 A=0.02547
GO Exome Sequencing Project European American Sub 8592 G=0.9657 A=0.0343
GO Exome Sequencing Project African American Sub 4406 G=0.9918 A=0.0082
ALFA Total Global 11176 G=0.95741 A=0.04259
ALFA European Sub 8134 G=0.9564 A=0.0436
ALFA Other Sub 2302 G=0.9574 A=0.0426
ALFA African Sub 676 G=0.967 A=0.033
ALFA Asian Sub 60 G=1.00 A=0.00
ALFA South Asian Sub 4 G=0.8 A=0.2
ALFA Latin American 1 Sub 0 G=0 A=0
ALFA Latin American 2 Sub 0 G=0 A=0
1000Genomes Global Study-wide 5008 G=0.9808 A=0.0192
1000Genomes African Sub 1322 G=0.9939 A=0.0061
1000Genomes East Asian Sub 1008 G=1.0000 A=0.0000
1000Genomes Europe Sub 1006 G=0.9632 A=0.0368
1000Genomes South Asian Sub 978 G=0.968 A=0.032
1000Genomes American Sub 694 G=0.971 A=0.029
Genetic variation in the Estonian population Estonian Study-wide 4480 G=0.9571 A=0.0429
The Avon Longitudinal Study of Parents and Children PARENT AND CHILD COHORT Study-wide 3854 G=0.9681 A=0.0319
UK 10K study - Twins TWIN COHORT Study-wide 3708 G=0.9666 A=0.0334
Genome of the Netherlands Release 5 Genome of the Netherlands Study-wide 998 G=0.973 A=0.027
Northern Sweden ACPOP Study-wide 600 G=0.970 A=0.030
Medical Genome Project healthy controls from Spanish population Spanish controls Study-wide 534 G=0.964 A=0.036
Qatari Global Study-wide 216 G=0.949 A=0.051
The Danish reference pan genome Danish Study-wide 40 G=0.93 A=0.07
SGDP_PRJ Global Study-wide 20 G=0.45 A=0.55
Siberian Global Study-wide 4 G=0.5 A=0.5

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 G= A
GRCh38.p12 chr 3 NC_000003.12:g.120670582= NC_000003.12:g.120670582G>A
GRCh37.p13 chr 3 NC_000003.11:g.120389429= NC_000003.11:g.120389429G>A
HGD RefSeqGene NG_011957.1:g.16900= NG_011957.1:g.16900C>T
HGD transcript NM_000187.3:c.177-50= NM_000187.3:c.177-50C>T
HGD transcript NM_000187.4:c.177-50= NM_000187.4:c.177-50C>T
HGD transcript variant X1 XM_005247412.1:c.177-50= XM_005247412.1:c.177-50C>T
HGD transcript variant X1 XM_005247412.2:c.177-50= XM_005247412.2:c.177-50C>T
HGD transcript variant X2 XM_005247413.1:c.177-50= XM_005247413.1:c.177-50C>T
HGD transcript variant X2 XM_005247413.2:c.177-50= XM_005247413.2:c.177-50C>T
HGD transcript variant X3 XM_005247414.1:c.177-50= XM_005247414.1:c.177-50C>T
HGD transcript variant X5 XM_005247414.5:c.177-50= XM_005247414.5:c.177-50C>T
HGD transcript variant X4 XM_011512746.2:c.177-50= XM_011512746.2:c.177-50C>T
HGD transcript variant X3 XM_017006277.2:c.-247-50= XM_017006277.2:c.-247-50C>T

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#.

37 SubSNP, 17 Frequency submissions
No Submitter Submission ID Date (Build)
1 GMI ss284734959 Apr 25, 2013 (138)
2 1000GENOMES ss331004978 May 09, 2011 (134)
3 1000GENOMES ss489894728 May 04, 2012 (137)
4 ILLUMINA ss536439061 Sep 08, 2015 (146)
5 NHLBI-ESP ss712547081 Apr 25, 2013 (138)
6 EVA-GONL ss979083942 Aug 21, 2014 (142)
7 JMKIDD_LAB ss1070777393 Aug 21, 2014 (142)
8 1000GENOMES ss1305860188 Aug 21, 2014 (142)
9 EVA_GENOME_DK ss1580152580 Apr 01, 2015 (144)
10 EVA_DECODE ss1588566161 Apr 01, 2015 (144)
11 EVA_UK10K_ALSPAC ss1608059712 Apr 01, 2015 (144)
12 EVA_UK10K_TWINSUK ss1651053745 Apr 01, 2015 (144)
13 EVA_EXAC ss1687158547 Apr 01, 2015 (144)
14 EVA_MGP ss1711029907 Apr 01, 2015 (144)
15 WEILL_CORNELL_DGM ss1922310272 Feb 12, 2016 (147)
16 JJLAB ss2021722973 Sep 14, 2016 (149)
17 USC_VALOUEV ss2149815108 Dec 20, 2016 (150)
18 HUMAN_LONGEVITY ss2255254808 Dec 20, 2016 (150)
19 TOPMED ss2422579240 Dec 20, 2016 (150)
20 GNOMAD ss2733990667 Nov 08, 2017 (151)
21 GNOMAD ss2747077650 Nov 08, 2017 (151)
22 GNOMAD ss2798281808 Nov 08, 2017 (151)
23 SWEGEN ss2993074628 Nov 08, 2017 (151)
24 CSHL ss3345231491 Nov 08, 2017 (151)
25 TOPMED ss3403602885 Nov 08, 2017 (151)
26 ILLUMINA ss3628759194 Oct 12, 2018 (152)
27 OMUKHERJEE_ADBS ss3646291551 Oct 12, 2018 (152)
28 EGCUT_WGS ss3661001394 Jul 13, 2019 (153)
29 EVA_DECODE ss3710145731 Jul 13, 2019 (153)
30 ACPOP ss3730286857 Jul 13, 2019 (153)
31 KHV_HUMAN_GENOMES ss3803735811 Jul 13, 2019 (153)
32 EVA ss3823945473 Apr 25, 2020 (154)
33 EVA ss3825639985 Apr 25, 2020 (154)
34 EVA ss3828038419 Apr 25, 2020 (154)
35 EVA ss3837451398 Apr 25, 2020 (154)
36 EVA ss3842881670 Apr 25, 2020 (154)
37 SGDP_PRJ ss3856814243 Apr 25, 2020 (154)
38 1000Genomes NC_000003.11 - 120389429 Oct 12, 2018 (152)
39 The Avon Longitudinal Study of Parents and Children NC_000003.11 - 120389429 Oct 12, 2018 (152)
40 Genetic variation in the Estonian population NC_000003.11 - 120389429 Oct 12, 2018 (152)
41 ExAC NC_000003.11 - 120389429 Oct 12, 2018 (152)
42 The Danish reference pan genome NC_000003.11 - 120389429 Apr 25, 2020 (154)
43 gnomAD - Genomes NC_000003.11 - 120389429 Jul 13, 2019 (153)
44 gnomAD - Exomes NC_000003.11 - 120389429 Jul 13, 2019 (153)
45 GO Exome Sequencing Project NC_000003.11 - 120389429 Oct 12, 2018 (152)
46 Genome of the Netherlands Release 5 NC_000003.11 - 120389429 Apr 25, 2020 (154)
47 Medical Genome Project healthy controls from Spanish population NC_000003.11 - 120389429 Apr 25, 2020 (154)
48 Northern Sweden NC_000003.11 - 120389429 Jul 13, 2019 (153)
49 Qatari NC_000003.11 - 120389429 Apr 25, 2020 (154)
50 SGDP_PRJ NC_000003.11 - 120389429 Apr 25, 2020 (154)
51 Siberian NC_000003.11 - 120389429 Apr 25, 2020 (154)
52 TopMed NC_000003.12 - 120670582 Oct 12, 2018 (152)
53 UK 10K study - Twins NC_000003.11 - 120389429 Oct 12, 2018 (152)
54 dbGaP Population Frequency Project NC_000003.12 - 120670582 Apr 25, 2020 (154)

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
ss284734959, ss1588566161 NC_000003.10:121872118:G:A NC_000003.12:120670581:G:A (self)
17112883, 9532636, 6739642, 7094479, 6317519, 46817358, 3076166, 403778, 4187969, 145736, 3571722, 4352202, 8831223, 2331462, 9532636, ss331004978, ss489894728, ss536439061, ss712547081, ss979083942, ss1070777393, ss1305860188, ss1580152580, ss1608059712, ss1651053745, ss1687158547, ss1711029907, ss1922310272, ss2021722973, ss2149815108, ss2422579240, ss2733990667, ss2747077650, ss2798281808, ss2993074628, ss3345231491, ss3628759194, ss3646291551, ss3661001394, ss3730286857, ss3823945473, ss3825639985, ss3828038419, ss3837451398, ss3856814243 NC_000003.11:120389428:G:A NC_000003.12:120670581:G:A (self)
261524259, 387029711, ss2255254808, ss3403602885, ss3710145731, ss3803735811, ss3842881670 NC_000003.12:120670581:G:A NC_000003.12:120670581:G:A (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 rs145728491


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.post557+f76c771