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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.

rs756416451

Current Build 156

Released September 21, 2022

Organism
Homo sapiens
Position
chrX:24843585 (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
A>G
Variation Type
SNV Single Nucleotide Variation
Frequency
G=0.000079 (21/264690, TOPMED)
G=0.000132 (23/174244, GnomAD_exome)
G=0.000038 (4/104253, GnomAD) (+ 2 more)
G=0.00011 (9/85252, ExAC)
G=0.00004 (1/23698, ALFA)
Clinical Significance
Reported in ClinVar
Gene : Consequence
POLA1 : Missense Variant
Publications
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: 20230706150541
Population Group Sample Size Ref Allele Alt Allele
Total Global 23698 A=0.99996 G=0.00004
European Sub 15830 A=0.99994 G=0.00006
African Sub 3926 A=1.0000 G=0.0000
African Others Sub 122 A=1.000 G=0.000
African American Sub 3804 A=1.0000 G=0.0000
Asian Sub 202 A=1.000 G=0.000
East Asian Sub 146 A=1.000 G=0.000
Other Asian Sub 56 A=1.00 G=0.00
Latin American 1 Sub 146 A=1.000 G=0.000
Latin American 2 Sub 610 A=1.000 G=0.000
South Asian Sub 104 A=1.000 G=0.000
Other Sub 2880 A=1.0000 G=0.0000


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 A=0.999921 G=0.000079
gnomAD - Exomes Global Study-wide 174244 A=0.999868 G=0.000132
gnomAD - Exomes European Sub 94717 A=1.00000 G=0.00000
gnomAD - Exomes Asian Sub 30135 A=1.00000 G=0.00000
gnomAD - Exomes American Sub 25292 A=0.99909 G=0.00091
gnomAD - Exomes African Sub 12651 A=1.00000 G=0.00000
gnomAD - Exomes Ashkenazi Jewish Sub 7242 A=1.0000 G=0.0000
gnomAD - Exomes Other Sub 4207 A=1.0000 G=0.0000
gnomAD - Genomes Global Study-wide 104253 A=0.999962 G=0.000038
gnomAD - Genomes European Sub 57135 A=1.00000 G=0.00000
gnomAD - Genomes African Sub 31424 A=1.00000 G=0.00000
gnomAD - Genomes American Sub 9366 A=0.9996 G=0.0004
gnomAD - Genomes Ashkenazi Jewish Sub 2527 A=1.0000 G=0.0000
gnomAD - Genomes East Asian Sub 2243 A=1.0000 G=0.0000
gnomAD - Genomes Other Sub 1558 A=1.0000 G=0.0000
ExAC Global Study-wide 85252 A=0.99989 G=0.00011
ExAC Europe Sub 51359 A=1.00000 G=0.00000
ExAC Asian Sub 15712 A=1.00000 G=0.00000
ExAC American Sub 9124 A=0.9990 G=0.0010
ExAC African Sub 8445 A=1.0000 G=0.0000
ExAC Other Sub 612 A=1.000 G=0.000
Allele Frequency Aggregator Total Global 23698 A=0.99996 G=0.00004
Allele Frequency Aggregator European Sub 15830 A=0.99994 G=0.00006
Allele Frequency Aggregator African Sub 3926 A=1.0000 G=0.0000
Allele Frequency Aggregator Other Sub 2880 A=1.0000 G=0.0000
Allele Frequency Aggregator Latin American 2 Sub 610 A=1.000 G=0.000
Allele Frequency Aggregator Asian Sub 202 A=1.000 G=0.000
Allele Frequency Aggregator Latin American 1 Sub 146 A=1.000 G=0.000
Allele Frequency Aggregator South Asian Sub 104 A=1.000 G=0.000
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 X NC_000023.11:g.24843585A>G
GRCh37.p13 chr X NC_000023.10:g.24861702A>G
POLA1 RefSeqGene NG_016798.2:g.154639A>G
Gene: POLA1, DNA polymerase alpha 1, catalytic subunit (plus strand)
Molecule type Change Amino acid[Codon] SO Term
POLA1 transcript variant 2 NM_016937.4:c.3937A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform 2 NP_058633.2:p.Ile1313Val I (Ile) > V (Val) Missense Variant
POLA1 transcript variant 1 NM_001330360.2:c.3955A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform 1 NP_001317289.1:p.Ile1319V…

NP_001317289.1:p.Ile1319Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant 3 NM_001378303.1:c.3880A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform 3 NP_001365232.1:p.Ile1294V…

NP_001365232.1:p.Ile1294Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant 4 NR_165482.1:n.3721A>G N/A Non Coding Transcript Variant
POLA1 transcript variant 5 NR_165483.1:n.3823A>G N/A Non Coding Transcript Variant
POLA1 transcript variant X9 XM_011545541.3:c. N/A Genic Downstream Transcript Variant
POLA1 transcript variant X8 XM_024452392.2:c. N/A Genic Downstream Transcript Variant
POLA1 transcript variant X10 XM_047442183.1:c. N/A Genic Downstream Transcript Variant
POLA1 transcript variant X1 XM_017029594.3:c.3955A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X1 XP_016885083.1:p.Ile1319V…

XP_016885083.1:p.Ile1319Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X2 XM_017029595.3:c.3955A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X2 XP_016885084.1:p.Ile1319V…

XP_016885084.1:p.Ile1319Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X3 XM_017029596.2:c.3955A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X3 XP_016885085.1:p.Ile1319V…

XP_016885085.1:p.Ile1319Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X4 XM_011545540.4:c.3955A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X4 XP_011543842.1:p.Ile1319V…

XP_011543842.1:p.Ile1319Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X5 XM_047442180.1:c.3937A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X5 XP_047298136.1:p.Ile1313V…

XP_047298136.1:p.Ile1313Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X6 XM_047442181.1:c.3529A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X6 XP_047298137.1:p.Ile1177V…

XP_047298137.1:p.Ile1177Val

I (Ile) > V (Val) Missense Variant
POLA1 transcript variant X7 XM_047442182.1:c.3529A>G I [ATC] > V [GTC] Coding Sequence Variant
DNA polymerase alpha catalytic subunit isoform X6 XP_047298138.1:p.Ile1177V…

XP_047298138.1:p.Ile1177Val

I (Ile) > V (Val) Missense Variant
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.

Allele: G (allele ID: 1052387 )
ClinVar Accession Disease Names Clinical Significance
RCV001363916.4 not provided Uncertain-Significance
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 A= G
GRCh38.p14 chr X NC_000023.11:g.24843585= NC_000023.11:g.24843585A>G
GRCh37.p13 chr X NC_000023.10:g.24861702= NC_000023.10:g.24861702A>G
POLA1 RefSeqGene NG_016798.2:g.154639= NG_016798.2:g.154639A>G
POLA1 transcript variant 2 NM_016937.4:c.3937= NM_016937.4:c.3937A>G
POLA1 transcript variant 2 NM_016937.3:c.3937= NM_016937.3:c.3937A>G
POLA1 transcript variant 1 NM_001330360.2:c.3955= NM_001330360.2:c.3955A>G
POLA1 transcript variant 1 NM_001330360.1:c.3955= NM_001330360.1:c.3955A>G
POLA1 transcript variant 3 NM_001378303.1:c.3880= NM_001378303.1:c.3880A>G
POLA1 transcript variant 5 NR_165483.1:n.3823= NR_165483.1:n.3823A>G
POLA1 transcript variant 4 NR_165482.1:n.3721= NR_165482.1:n.3721A>G
POLA1 transcript variant X4 XM_011545540.4:c.3955= XM_011545540.4:c.3955A>G
POLA1 transcript variant X4 XM_011545540.3:c.3955= XM_011545540.3:c.3955A>G
POLA1 transcript variant X5 XM_011545540.2:c.3955= XM_011545540.2:c.3955A>G
POLA1 transcript variant X2 XM_011545540.1:c.3955= XM_011545540.1:c.3955A>G
POLA1 transcript variant X2 XM_017029595.3:c.3955= XM_017029595.3:c.3955A>G
POLA1 transcript variant X2 XM_017029595.2:c.3955= XM_017029595.2:c.3955A>G
POLA1 transcript variant X3 XM_017029595.1:c.3955= XM_017029595.1:c.3955A>G
POLA1 transcript variant X1 XM_017029594.3:c.3955= XM_017029594.3:c.3955A>G
POLA1 transcript variant X1 XM_017029594.2:c.3955= XM_017029594.2:c.3955A>G
POLA1 transcript variant X2 XM_017029594.1:c.3955= XM_017029594.1:c.3955A>G
POLA1 transcript variant X3 XM_017029596.2:c.3955= XM_017029596.2:c.3955A>G
POLA1 transcript variant X3 XM_017029596.1:c.3955= XM_017029596.1:c.3955A>G
POLA1 transcript variant X7 XM_047442182.1:c.3529= XM_047442182.1:c.3529A>G
POLA1 transcript variant X5 XM_047442180.1:c.3937= XM_047442180.1:c.3937A>G
POLA1 transcript variant X6 XM_047442181.1:c.3529= XM_047442181.1:c.3529A>G
DNA polymerase alpha catalytic subunit isoform 2 NP_058633.2:p.Ile1313= NP_058633.2:p.Ile1313Val
DNA polymerase alpha catalytic subunit isoform 1 NP_001317289.1:p.Ile1319= NP_001317289.1:p.Ile1319Val
DNA polymerase alpha catalytic subunit isoform 3 NP_001365232.1:p.Ile1294= NP_001365232.1:p.Ile1294Val
DNA polymerase alpha catalytic subunit isoform X4 XP_011543842.1:p.Ile1319= XP_011543842.1:p.Ile1319Val
DNA polymerase alpha catalytic subunit isoform X2 XP_016885084.1:p.Ile1319= XP_016885084.1:p.Ile1319Val
DNA polymerase alpha catalytic subunit isoform X1 XP_016885083.1:p.Ile1319= XP_016885083.1:p.Ile1319Val
DNA polymerase alpha catalytic subunit isoform X3 XP_016885085.1:p.Ile1319= XP_016885085.1:p.Ile1319Val
DNA polymerase alpha catalytic subunit isoform X6 XP_047298138.1:p.Ile1177= XP_047298138.1:p.Ile1177Val
DNA polymerase alpha catalytic subunit isoform X5 XP_047298136.1:p.Ile1313= XP_047298136.1:p.Ile1313Val
DNA polymerase alpha catalytic subunit isoform X6 XP_047298137.1:p.Ile1177= XP_047298137.1:p.Ile1177Val
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#.

9 SubSNP, 5 Frequency, 1 ClinVar submissions
No Submitter Submission ID Date (Build)
1 EVA_EXAC ss1694480841 Apr 01, 2015 (144)
2 ILLUMINA ss1958183269 Feb 12, 2016 (147)
3 GNOMAD ss2745341955 Nov 08, 2017 (151)
4 GNOMAD ss2746087400 Nov 08, 2017 (151)
5 GNOMAD ss2977290748 Nov 08, 2017 (151)
6 ILLUMINA ss3022996322 Nov 08, 2017 (151)
7 ILLUMINA ss3653554752 Oct 12, 2018 (152)
8 ILLUMINA ss3726668588 Jul 13, 2019 (153)
9 TOPMED ss5117999624 Apr 25, 2021 (155)
10 ExAC NC_000023.10 - 24861702 Oct 12, 2018 (152)
11 gnomAD - Genomes NC_000023.11 - 24843585 Apr 25, 2021 (155)
12 gnomAD - Exomes NC_000023.10 - 24861702 Jul 13, 2019 (153)
13 TopMed NC_000023.11 - 24843585 Apr 25, 2021 (155)
14 ALFA NC_000023.11 - 24843585 Apr 25, 2021 (155)
15 ClinVar RCV001363916.4 Oct 16, 2022 (156)
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).

Added to this RefSNP Cluster:
Submission IDs Observation SPDI Canonical SPDI Source RSIDs
9979879, 14678176, ss1694480841, ss1958183269, ss2745341955, ss2746087400, ss2977290748, ss3022996322, ss3653554752 NC_000023.10:24861701:A:G NC_000023.11:24843584:A:G (self)
RCV001363916.4, 577085281, 681605981, 1127954816, ss3726668588, ss5117999624 NC_000023.11:24843584:A:G NC_000023.11:24843584:A:G (self)
Help

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

No publications for rs756416451

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