Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

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.

rs1491153883

Current Build 156

Released September 21, 2022

Organism
Homo sapiens
Position
chr6:43605445-43605446 (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
insATT / insCTT
Variation Type
Indel Insertion and Deletion
Frequency
insCTT=0.00259 (30/11564, ALFA)
Clinical Significance
Not Reported in ClinVar
Gene : Consequence
POLR1C : Intron Variant
POLH : Intron 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: 20231103111315
Population Group Sample Size Ref Allele Alt Allele Ref HMOZ Alt HMOZ HTRZ HWEP
Total Global 11564 TT=0.99741 TTATT=0.00000, TTCTT=0.00259 0.994811 0.0 0.005189 0
European Sub 7614 TT=1.0000 TTATT=0.0000, TTCTT=0.0000 1.0 0.0 0.0 N/A
African Sub 2552 TT=0.9882 TTATT=0.0000, TTCTT=0.0118 0.976489 0.0 0.023511 0
African Others Sub 100 TT=0.99 TTATT=0.00, TTCTT=0.01 0.98 0.0 0.02 0
African American Sub 2452 TT=0.9882 TTATT=0.0000, TTCTT=0.0118 0.976346 0.0 0.023654 0
Asian Sub 108 TT=1.000 TTATT=0.000, TTCTT=0.000 1.0 0.0 0.0 N/A
East Asian Sub 84 TT=1.00 TTATT=0.00, TTCTT=0.00 1.0 0.0 0.0 N/A
Other Asian Sub 24 TT=1.00 TTATT=0.00, TTCTT=0.00 1.0 0.0 0.0 N/A
Latin American 1 Sub 142 TT=1.000 TTATT=0.000, TTCTT=0.000 1.0 0.0 0.0 N/A
Latin American 2 Sub 606 TT=1.000 TTATT=0.000, TTCTT=0.000 1.0 0.0 0.0 N/A
South Asian Sub 94 TT=1.00 TTATT=0.00, TTCTT=0.00 1.0 0.0 0.0 N/A
Other Sub 448 TT=1.000 TTATT=0.000, TTCTT=0.000 1.0 0.0 0.0 N/A


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
Allele Frequency Aggregator Total Global 11564 TT=0.99741 insATT=0.00000, insCTT=0.00259
Allele Frequency Aggregator European Sub 7614 TT=1.0000 insATT=0.0000, insCTT=0.0000
Allele Frequency Aggregator African Sub 2552 TT=0.9882 insATT=0.0000, insCTT=0.0118
Allele Frequency Aggregator Latin American 2 Sub 606 TT=1.000 insATT=0.000, insCTT=0.000
Allele Frequency Aggregator Other Sub 448 TT=1.000 insATT=0.000, insCTT=0.000
Allele Frequency Aggregator Latin American 1 Sub 142 TT=1.000 insATT=0.000, insCTT=0.000
Allele Frequency Aggregator Asian Sub 108 TT=1.000 insATT=0.000, insCTT=0.000
Allele Frequency Aggregator South Asian Sub 94 TT=1.00 insATT=0.00, insCTT=0.00
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 6 NC_000006.12:g.43605446_43605447insATT
GRCh38.p14 chr 6 NC_000006.12:g.43605446_43605447insCTT
GRCh37.p13 chr 6 NC_000006.11:g.43573183_43573184insATT
GRCh37.p13 chr 6 NC_000006.11:g.43573183_43573184insCTT
POLH RefSeqGene (LRG_470) NG_009252.1:g.34306_34307insATT
POLH RefSeqGene (LRG_470) NG_009252.1:g.34306_34307insCTT
Gene: POLH, DNA polymerase eta (plus strand)
Molecule type Change Amino acid[Codon] SO Term
POLH transcript variant 2 NM_001291969.2:c.702+127_…

NM_001291969.2:c.702+127_702+128insATT

N/A Intron Variant
POLH transcript variant 3 NM_001291970.2:c.1074+127…

NM_001291970.2:c.1074+127_1074+128insATT

N/A Intron Variant
POLH transcript variant 1 NM_006502.3:c.1074+127_10…

NM_006502.3:c.1074+127_1074+128insATT

N/A Intron Variant
POLH transcript variant X1 XM_047418900.1:c.618+127_…

XM_047418900.1:c.618+127_618+128insATT

N/A Intron Variant
Gene: POLR1C, RNA polymerase I and III subunit C (plus strand)
Molecule type Change Amino acid[Codon] SO Term
POLR1C transcript variant 2 NM_001318876.2:c.945+7617…

NM_001318876.2:c.945+76175_945+76176insATT

N/A Intron Variant
POLR1C transcript variant 3 NM_001363658.2:c. N/A Genic Downstream Transcript Variant
POLR1C transcript variant 1 NM_203290.4:c. N/A Genic Downstream Transcript Variant
POLR1C transcript variant X1 XM_047419577.1:c. N/A Genic Downstream Transcript 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.

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 TT= insATT insCTT
GRCh38.p14 chr 6 NC_000006.12:g.43605445_43605446= NC_000006.12:g.43605446_43605447insATT NC_000006.12:g.43605446_43605447insCTT
GRCh37.p13 chr 6 NC_000006.11:g.43573182_43573183= NC_000006.11:g.43573183_43573184insATT NC_000006.11:g.43573183_43573184insCTT
POLH RefSeqGene (LRG_470) NG_009252.1:g.34305_34306= NG_009252.1:g.34306_34307insATT NG_009252.1:g.34306_34307insCTT
POLH transcript variant 2 NM_001291969.2:c.702+126= NM_001291969.2:c.702+127_702+128insATT NM_001291969.2:c.702+127_702+128insCTT
POLH transcript variant 3 NM_001291970.2:c.1074+126= NM_001291970.2:c.1074+127_1074+128insATT NM_001291970.2:c.1074+127_1074+128insCTT
POLR1C transcript variant 2 NM_001318876.2:c.945+76174= NM_001318876.2:c.945+76175_945+76176insATT NM_001318876.2:c.945+76175_945+76176insCTT
POLH transcript variant 1 NM_006502.2:c.1074+126= NM_006502.2:c.1074+127_1074+128insATT NM_006502.2:c.1074+127_1074+128insCTT
POLH transcript variant 1 NM_006502.3:c.1074+126= NM_006502.3:c.1074+127_1074+128insATT NM_006502.3:c.1074+127_1074+128insCTT
POLH transcript variant X1 XM_005249186.1:c.888+126= XM_005249186.1:c.888+127_888+128insATT XM_005249186.1:c.888+127_888+128insCTT
POLH transcript variant X1 XM_047418900.1:c.618+126= XM_047418900.1:c.618+127_618+128insATT XM_047418900.1:c.618+127_618+128insCTT
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#.

2 SubSNP, 1 Frequency submissions
No Submitter Submission ID Date (Build)
1 1000G_HIGH_COVERAGE ss5268256399 Oct 13, 2022 (156)
2 SANFORD_IMAGENETICS ss5640293020 Oct 13, 2022 (156)
3 ALFA NC_000006.12 - 43605445 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).

Added to this RefSNP Cluster:
Submission IDs Observation SPDI Canonical SPDI Source RSIDs
6299829455 NC_000006.12:43605444:TT:TTATT NC_000006.12:43605444:TT:TTATT (self)
ss5640293020 NC_000006.11:43573181::TTC NC_000006.12:43605444:TT:TTCTT
ss5268256399 NC_000006.12:43605444::TTC NC_000006.12:43605444:TT:TTCTT (self)
6299829455 NC_000006.12:43605444:TT:TTCTT NC_000006.12:43605444:TT:TTCTT (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 rs1491153883

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.post820+afb47a3d