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dbSNP Short Genetic Variations

Examples: rs268, BRCA1 and more Advanced search

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.

rs6942930

Current Build 156

Released September 21, 2022

Organism
Homo sapiens
Position
chr7:1512784 (GRCh38.p14) 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.

Alleles
G>A / G>C / G>T
Variation Type
SNV Single Nucleotide Variation
Frequency
A=0.489338 (129523/264690, TOPMED)
A=0.494557 (69139/139800, GnomAD)
A=0.49494 (30830/62290, ALFA) (+ 23 more)
G=0.34532 (9758/28258, 14KJPN)
G=0.34121 (5718/16758, 8.3KJPN)
G=0.4800 (3074/6404, 1000G_30x)
G=0.4726 (2367/5008, 1000G)
A=0.4823 (2202/4566, GO-ESP)
G=0.4406 (1974/4480, Estonian)
A=0.4813 (1855/3854, ALSPAC)
A=0.4730 (1754/3708, TWINSUK)
G=0.3311 (970/2930, KOREAN)
G=0.4471 (912/2040, HGDP_Stanford)
G=0.3417 (626/1832, Korea1K)
G=0.4533 (796/1756, HapMap)
A=0.480 (479/998, GoNL)
G=0.332 (261/786, PRJEB37584)
G=0.468 (281/600, NorthernSweden)
A=0.266 (142/534, MGP)
G=0.300 (135/450, SGDP_PRJ)
G=0.458 (99/216, Qatari)
G=0.380 (82/216, Vietnamese)
G=0.50 (48/96, Ancient Sardinia)
A=0.50 (48/96, Ancient Sardinia)
G=0.21 (9/42, Siberian)
A=0.40 (16/40, GENOME_DK)
Clinical Significance
Not Reported in ClinVar
Gene : Consequence
None
Publications
1 citation
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: 20230706150541
Population Group Sample Size Ref Allele Alt Allele
Total Global 62290 G=0.50506 A=0.49494
European Sub 50272 G=0.50750 A=0.49250
African Sub 4426 G=0.5190 A=0.4810
African Others Sub 166 G=0.554 A=0.446
African American Sub 4260 G=0.5176 A=0.4824
Asian Sub 172 G=0.372 A=0.628
East Asian Sub 132 G=0.356 A=0.644
Other Asian Sub 40 G=0.42 A=0.57
Latin American 1 Sub 226 G=0.513 A=0.487
Latin American 2 Sub 1168 G=0.5411 A=0.4589
South Asian Sub 4936 G=0.4605 A=0.5395
Other Sub 1090 G=0.5183 A=0.4817


Help

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").

Download
Study Population Group Sample Size Ref Allele Alt Allele
TopMed Global Study-wide 264690 G=0.510662 A=0.489338
gnomAD - Genomes Global Study-wide 139800 G=0.505443 A=0.494557
gnomAD - Genomes European Sub 75696 G=0.49553 A=0.50447
gnomAD - Genomes African Sub 41920 G=0.52149 A=0.47851
gnomAD - Genomes American Sub 13632 G=0.52157 A=0.47843
gnomAD - Genomes Ashkenazi Jewish Sub 3322 G=0.5939 A=0.4061
gnomAD - Genomes East Asian Sub 3082 G=0.3670 A=0.6330
gnomAD - Genomes Other Sub 2148 G=0.5009 A=0.4991
Allele Frequency Aggregator Total Global 62290 G=0.50506 A=0.49494
Allele Frequency Aggregator European Sub 50272 G=0.50750 A=0.49250
Allele Frequency Aggregator South Asian Sub 4936 G=0.4605 A=0.5395
Allele Frequency Aggregator African Sub 4426 G=0.5190 A=0.4810
Allele Frequency Aggregator Latin American 2 Sub 1168 G=0.5411 A=0.4589
Allele Frequency Aggregator Other Sub 1090 G=0.5183 A=0.4817
Allele Frequency Aggregator Latin American 1 Sub 226 G=0.513 A=0.487
Allele Frequency Aggregator Asian Sub 172 G=0.372 A=0.628
14KJPN JAPANESE Study-wide 28258 G=0.34532 A=0.65468
8.3KJPN JAPANESE Study-wide 16758 G=0.34121 A=0.65879
1000Genomes_30x Global Study-wide 6404 G=0.4800 A=0.5200
1000Genomes_30x African Sub 1786 G=0.5364 A=0.4636
1000Genomes_30x Europe Sub 1266 G=0.4684 A=0.5316
1000Genomes_30x South Asian Sub 1202 G=0.4834 A=0.5166
1000Genomes_30x East Asian Sub 1170 G=0.3513 A=0.6487
1000Genomes_30x American Sub 980 G=0.542 A=0.458
1000Genomes Global Study-wide 5008 G=0.4726 A=0.5274
1000Genomes African Sub 1322 G=0.5325 A=0.4675
1000Genomes East Asian Sub 1008 G=0.3393 A=0.6607
1000Genomes Europe Sub 1006 G=0.4602 A=0.5398
1000Genomes South Asian Sub 978 G=0.496 A=0.504
1000Genomes American Sub 694 G=0.537 A=0.463
GO Exome Sequencing Project Global Study-wide 4566 G=0.5177 A=0.4823
GO Exome Sequencing Project European American Sub 3182 G=0.5220 A=0.4780
GO Exome Sequencing Project African American Sub 1384 G=0.5079 A=0.4921
Genetic variation in the Estonian population Estonian Study-wide 4480 G=0.4406 A=0.5594
The Avon Longitudinal Study of Parents and Children PARENT AND CHILD COHORT Study-wide 3854 G=0.5187 A=0.4813
UK 10K study - Twins TWIN COHORT Study-wide 3708 G=0.5270 A=0.4730
KOREAN population from KRGDB KOREAN Study-wide 2930 G=0.3311 A=0.6689, C=0.0000, T=0.0000
HGDP-CEPH-db Supplement 1 Global Study-wide 2040 G=0.4471 A=0.5529
HGDP-CEPH-db Supplement 1 Est_Asia Sub 466 G=0.335 A=0.665
HGDP-CEPH-db Supplement 1 Central_South_Asia Sub 406 G=0.414 A=0.586
HGDP-CEPH-db Supplement 1 Middle_Est Sub 332 G=0.431 A=0.569
HGDP-CEPH-db Supplement 1 Europe Sub 316 G=0.465 A=0.535
HGDP-CEPH-db Supplement 1 Africa Sub 236 G=0.513 A=0.487
HGDP-CEPH-db Supplement 1 America Sub 212 G=0.684 A=0.316
HGDP-CEPH-db Supplement 1 Oceania Sub 72 G=0.44 A=0.56
Korean Genome Project KOREAN Study-wide 1832 G=0.3417 A=0.6583
HapMap Global Study-wide 1756 G=0.4533 A=0.5467
HapMap African Sub 668 G=0.485 A=0.515
HapMap American Sub 662 G=0.476 A=0.524
HapMap Asian Sub 252 G=0.290 A=0.710
HapMap Europe Sub 174 G=0.483 A=0.517
Genome of the Netherlands Release 5 Genome of the Netherlands Study-wide 998 G=0.520 A=0.480
CNV burdens in cranial meningiomas Global Study-wide 786 G=0.332 A=0.668
CNV burdens in cranial meningiomas CRM Sub 786 G=0.332 A=0.668
Northern Sweden ACPOP Study-wide 600 G=0.468 A=0.532
Medical Genome Project healthy controls from Spanish population Spanish controls Study-wide 534 G=0.734 A=0.266
SGDP_PRJ Global Study-wide 450 G=0.300 A=0.700
Qatari Global Study-wide 216 G=0.458 A=0.542
A Vietnamese Genetic Variation Database Global Study-wide 216 G=0.380 A=0.620
Ancient Sardinia genome-wide 1240k capture data generation and analysis Global Study-wide 96 G=0.50 A=0.50
Siberian Global Study-wide 42 G=0.21 A=0.79
The Danish reference pan genome Danish Study-wide 40 G=0.60 A=0.40
Help

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.p14 chr 7 NC_000007.14:g.1512784G>A
GRCh38.p14 chr 7 NC_000007.14:g.1512784G>C
GRCh38.p14 chr 7 NC_000007.14:g.1512784G>T
GRCh37.p13 chr 7 NC_000007.13:g.1552420G>A
GRCh37.p13 chr 7 NC_000007.13:g.1552420G>C
GRCh37.p13 chr 7 NC_000007.13:g.1552420G>T
Help

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
Help

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 C T
GRCh38.p14 chr 7 NC_000007.14:g.1512784= NC_000007.14:g.1512784G>A NC_000007.14:g.1512784G>C NC_000007.14:g.1512784G>T
GRCh37.p13 chr 7 NC_000007.13:g.1552420= NC_000007.13:g.1552420G>A NC_000007.13:g.1552420G>C NC_000007.13:g.1552420G>T
Help

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#.

94 SubSNP, 25 Frequency submissions
No Submitter Submission ID Date (Build)
1 BCM_SSAHASNP ss10350763 Jul 11, 2003 (116)
2 ILLUMINA ss66816708 Nov 30, 2006 (127)
3 ILLUMINA ss67519402 Nov 30, 2006 (127)
4 ILLUMINA ss67885597 Nov 30, 2006 (127)
5 ILLUMINA ss70897141 May 25, 2008 (130)
6 ILLUMINA ss71491643 May 17, 2007 (127)
7 ILLUMINA ss75829085 Dec 07, 2007 (129)
8 ILLUMINA ss79239493 Dec 15, 2007 (130)
9 KRIBB_YJKIM ss84580581 Dec 15, 2007 (130)
10 BGI ss104390104 Feb 23, 2009 (131)
11 1000GENOMES ss111378123 Jan 25, 2009 (130)
12 1000GENOMES ss113172414 Jan 25, 2009 (130)
13 ILLUMINA-UK ss115882933 Feb 14, 2009 (130)
14 ILLUMINA ss122652118 Dec 01, 2009 (131)
15 ILLUMINA ss154393402 Dec 01, 2009 (131)
16 GMI ss157944455 Dec 01, 2009 (131)
17 ILLUMINA ss159568918 Dec 01, 2009 (131)
18 COMPLETE_GENOMICS ss163526859 Jul 04, 2010 (132)
19 ILLUMINA ss172221425 Jul 04, 2010 (132)
20 ILLUMINA ss174176128 Jul 04, 2010 (132)
21 BUSHMAN ss202820101 Jul 04, 2010 (132)
22 1000GENOMES ss222851343 Jul 14, 2010 (132)
23 1000GENOMES ss233809393 Jul 15, 2010 (132)
24 1000GENOMES ss240799575 Jul 15, 2010 (132)
25 BL ss253981276 May 09, 2011 (134)
26 GMI ss279146882 May 04, 2012 (137)
27 GMI ss285559086 Apr 25, 2013 (138)
28 ILLUMINA ss537413197 Sep 08, 2015 (146)
29 TISHKOFF ss559738676 Apr 25, 2013 (138)
30 SSMP ss654088068 Apr 25, 2013 (138)
31 NHLBI-ESP ss712753474 Apr 25, 2013 (138)
32 ILLUMINA ss825570011 Apr 01, 2015 (144)
33 ILLUMINA ss833080030 Jul 13, 2019 (153)
34 EVA-GONL ss983837738 Aug 21, 2014 (142)
35 JMKIDD_LAB ss1074282678 Aug 21, 2014 (142)
36 1000GENOMES ss1323528160 Aug 21, 2014 (142)
37 DDI ss1430995196 Apr 01, 2015 (144)
38 EVA_GENOME_DK ss1582027205 Apr 01, 2015 (144)
39 EVA_DECODE ss1593405080 Apr 01, 2015 (144)
40 EVA_UK10K_ALSPAC ss1617368664 Apr 01, 2015 (144)
41 EVA_UK10K_TWINSUK ss1660362697 Apr 01, 2015 (144)
42 EVA_MGP ss1711151818 Apr 01, 2015 (144)
43 EVA_SVP ss1712924439 Apr 01, 2015 (144)
44 HAMMER_LAB ss1804819850 Sep 08, 2015 (146)
45 WEILL_CORNELL_DGM ss1927083293 Feb 12, 2016 (147)
46 GENOMED ss1970600590 Jul 19, 2016 (147)
47 JJLAB ss2024209180 Sep 14, 2016 (149)
48 USC_VALOUEV ss2152409102 Dec 20, 2016 (150)
49 HUMAN_LONGEVITY ss2290972534 Dec 20, 2016 (150)
50 SYSTEMSBIOZJU ss2626596982 Nov 08, 2017 (151)
51 GRF ss2708057909 Nov 08, 2017 (151)
52 ILLUMINA ss2711100415 Nov 08, 2017 (151)
53 GNOMAD ss2848644695 Nov 08, 2017 (151)
54 SWEGEN ss3000461860 Nov 08, 2017 (151)
55 BIOINF_KMB_FNS_UNIBA ss3025899856 Nov 08, 2017 (151)
56 CSHL ss3347386208 Nov 08, 2017 (151)
57 ILLUMINA ss3638675083 Oct 12, 2018 (152)
58 ILLUMINA ss3639339419 Oct 12, 2018 (152)
59 ILLUMINA ss3639697190 Oct 12, 2018 (152)
60 ILLUMINA ss3643612966 Oct 12, 2018 (152)
61 EGCUT_WGS ss3668394329 Jul 13, 2019 (153)
62 EVA_DECODE ss3718905880 Jul 13, 2019 (153)
63 ACPOP ss3734266661 Jul 13, 2019 (153)
64 EVA ss3766066657 Jul 13, 2019 (153)
65 PACBIO ss3785706445 Jul 13, 2019 (153)
66 PACBIO ss3791023622 Jul 13, 2019 (153)
67 PACBIO ss3795903299 Jul 13, 2019 (153)
68 KHV_HUMAN_GENOMES ss3809229465 Jul 13, 2019 (153)
69 EVA ss3824249382 Apr 26, 2020 (154)
70 EVA ss3825712961 Apr 26, 2020 (154)
71 EVA ss3830359098 Apr 26, 2020 (154)
72 EVA ss3838666305 Apr 26, 2020 (154)
73 EVA ss3844116521 Apr 26, 2020 (154)
74 HGDP ss3847862508 Apr 26, 2020 (154)
75 SGDP_PRJ ss3866409502 Apr 26, 2020 (154)
76 KRGDB ss3913420330 Apr 26, 2020 (154)
77 KOGIC ss3960690033 Apr 26, 2020 (154)
78 EVA ss3984581874 Apr 26, 2021 (155)
79 EVA ss3985272337 Apr 26, 2021 (155)
80 EVA ss4017315985 Apr 26, 2021 (155)
81 TOPMED ss4732306530 Apr 26, 2021 (155)
82 TOMMO_GENOMICS ss5181362875 Apr 26, 2021 (155)
83 1000G_HIGH_COVERAGE ss5271468495 Oct 14, 2022 (156)
84 EVA ss5371021471 Oct 14, 2022 (156)
85 HUGCELL_USP ss5468798553 Oct 14, 2022 (156)
86 EVA ss5508816119 Oct 14, 2022 (156)
87 1000G_HIGH_COVERAGE ss5558941505 Oct 14, 2022 (156)
88 SANFORD_IMAGENETICS ss5642134652 Oct 14, 2022 (156)
89 TOMMO_GENOMICS ss5720682489 Oct 14, 2022 (156)
90 YY_MCH ss5808244783 Oct 14, 2022 (156)
91 EVA ss5822268707 Oct 14, 2022 (156)
92 EVA ss5855719935 Oct 14, 2022 (156)
93 EVA ss5857311166 Oct 14, 2022 (156)
94 EVA ss5971326378 Oct 14, 2022 (156)
95 1000Genomes NC_000007.13 - 1552420 Oct 12, 2018 (152)
96 1000Genomes_30x NC_000007.14 - 1512784 Oct 14, 2022 (156)
97 The Avon Longitudinal Study of Parents and Children NC_000007.13 - 1552420 Oct 12, 2018 (152)
98 Genetic variation in the Estonian population NC_000007.13 - 1552420 Oct 12, 2018 (152)
99 The Danish reference pan genome NC_000007.13 - 1552420 Apr 26, 2020 (154)
100 gnomAD - Genomes NC_000007.14 - 1512784 Apr 26, 2021 (155)
101 GO Exome Sequencing Project NC_000007.13 - 1552420 Oct 12, 2018 (152)
102 Genome of the Netherlands Release 5 NC_000007.13 - 1552420 Apr 26, 2020 (154)
103 HGDP-CEPH-db Supplement 1 NC_000007.12 - 1518946 Apr 26, 2020 (154)
104 HapMap NC_000007.14 - 1512784 Apr 26, 2020 (154)
105 KOREAN population from KRGDB NC_000007.13 - 1552420 Apr 26, 2020 (154)
106 Korean Genome Project NC_000007.14 - 1512784 Apr 26, 2020 (154)
107 Medical Genome Project healthy controls from Spanish population NC_000007.13 - 1552420 Apr 26, 2020 (154)
108 Northern Sweden NC_000007.13 - 1552420 Jul 13, 2019 (153)
109 Ancient Sardinia genome-wide 1240k capture data generation and analysis NC_000007.13 - 1552420 Apr 26, 2021 (155)
110 CNV burdens in cranial meningiomas NC_000007.13 - 1552420 Apr 26, 2021 (155)
111 Qatari NC_000007.13 - 1552420 Apr 26, 2020 (154)
112 SGDP_PRJ NC_000007.13 - 1552420 Apr 26, 2020 (154)
113 Siberian NC_000007.13 - 1552420 Apr 26, 2020 (154)
114 8.3KJPN NC_000007.13 - 1552420 Apr 26, 2021 (155)
115 14KJPN NC_000007.14 - 1512784 Oct 14, 2022 (156)
116 TopMed NC_000007.14 - 1512784 Apr 26, 2021 (155)
117 UK 10K study - Twins NC_000007.13 - 1552420 Oct 12, 2018 (152)
118 A Vietnamese Genetic Variation Database NC_000007.13 - 1552420 Jul 13, 2019 (153)
119 ALFA NC_000007.14 - 1512784 Apr 26, 2021 (155)
Help

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).

Associated ID History Updated (Build)
rs59386212 May 25, 2008 (130)
rs74301181 Dec 02, 2009 (131)
Added to this RefSNP Cluster:
Submission IDs Observation SPDI Canonical SPDI Source RSIDs
ss3639339419, ss3639697190 NC_000007.11:1325660:G:A NC_000007.14:1512783:G:A (self)
540400, ss111378123, ss113172414, ss115882933, ss163526859, ss202820101, ss253981276, ss279146882, ss285559086, ss825570011, ss1593405080, ss1712924439, ss3643612966, ss3847862508 NC_000007.12:1518945:G:A NC_000007.14:1512783:G:A (self)
35443861, 19766253, 14132577, 8192144, 707362, 8801148, 20597724, 267578, 7551526, 498264, 131293, 9125223, 18426482, 4925456, 39332182, 19766253, 4402163, ss222851343, ss233809393, ss240799575, ss537413197, ss559738676, ss654088068, ss712753474, ss833080030, ss983837738, ss1074282678, ss1323528160, ss1430995196, ss1582027205, ss1617368664, ss1660362697, ss1711151818, ss1804819850, ss1927083293, ss1970600590, ss2024209180, ss2152409102, ss2626596982, ss2708057909, ss2711100415, ss2848644695, ss3000461860, ss3347386208, ss3638675083, ss3668394329, ss3734266661, ss3766066657, ss3785706445, ss3791023622, ss3795903299, ss3824249382, ss3825712961, ss3830359098, ss3838666305, ss3866409502, ss3913420330, ss3984581874, ss3985272337, ss4017315985, ss5181362875, ss5371021471, ss5508816119, ss5642134652, ss5822268707, ss5971326378 NC_000007.13:1552419:G:A NC_000007.14:1512783:G:A (self)
46467440, 250075530, 3316770, 17068034, 54519593, 569684089, 4812659947, ss2290972534, ss3025899856, ss3718905880, ss3809229465, ss3844116521, ss3960690033, ss4732306530, ss5271468495, ss5468798553, ss5558941505, ss5720682489, ss5808244783, ss5855719935, ss5857311166 NC_000007.14:1512783:G:A NC_000007.14:1512783:G:A (self)
ss10350763 NT_007819.13:848093:G:A NC_000007.14:1512783:G:A (self)
ss66816708, ss67519402, ss67885597, ss70897141, ss71491643, ss75829085, ss79239493, ss84580581, ss104390104, ss122652118, ss154393402, ss157944455, ss159568918, ss172221425, ss174176128 NT_007819.17:1542419:G:A NC_000007.14:1512783:G:A (self)
20597724, ss3913420330 NC_000007.13:1552419:G:C NC_000007.14:1512783:G:C (self)
20597724, ss3913420330 NC_000007.13:1552419:G:T NC_000007.14:1512783:G:T (self)
Help

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

1 citation for rs6942930
PMID Title Author Year Journal
19118814 Genome-wide association study implicates a chromosome 12 risk locus for late-onset Alzheimer disease. Beecham GW et al. 2009 American journal of human genetics
Help

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.post761+d5e8e07