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.

rs121913428

Current Build 156

Released September 21, 2022

Organism
Homo sapiens
Position
chr7:55174015 (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
Variation Type
SNV Single Nucleotide Variation
Frequency
None
Clinical Significance
Reported in ClinVar
Gene : Consequence
EGFR : Missense Variant
Publications
18 citations
Genomic View
See rs on genome
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").

None
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.55174015G>A
GRCh38.p14 chr 7 NC_000007.14:g.55174015G>C
GRCh37.p13 chr 7 NC_000007.13:g.55241708G>A
GRCh37.p13 chr 7 NC_000007.13:g.55241708G>C
EGFR RefSeqGene (LRG_304) NG_007726.3:g.159984G>A
EGFR RefSeqGene (LRG_304) NG_007726.3:g.159984G>C
Gene: EGFR, epidermal growth factor receptor (plus strand)
Molecule type Change Amino acid[Codon] SO Term
EGFR transcript variant 2 NM_201282.2:c. N/A Genic Downstream Transcript Variant
EGFR transcript variant 3 NM_201283.2:c. N/A Genic Downstream Transcript Variant
EGFR transcript variant 4 NM_201284.2:c. N/A Genic Downstream Transcript Variant
EGFR transcript variant 1 NM_005228.5:c.2156G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform a precursor NP_005219.2:p.Gly719Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant 1 NM_005228.5:c.2156G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform a precursor NP_005219.2:p.Gly719Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant 6 NM_001346898.2:c.2156G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform f precursor NP_001333827.1:p.Gly719Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant 6 NM_001346898.2:c.2156G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform f precursor NP_001333827.1:p.Gly719Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant EGFRvIII NM_001346941.2:c.1355G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform i precursor NP_001333870.1:p.Gly452Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant EGFRvIII NM_001346941.2:c.1355G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform i precursor NP_001333870.1:p.Gly452Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant 8 NM_001346900.2:c.1997G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform h NP_001333829.1:p.Gly666Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant 8 NM_001346900.2:c.1997G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform h NP_001333829.1:p.Gly666Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant 5 NM_001346897.2:c.2021G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform e precursor NP_001333826.1:p.Gly674Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant 5 NM_001346897.2:c.2021G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform e precursor NP_001333826.1:p.Gly674Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant 7 NM_001346899.2:c.2021G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform g precursor NP_001333828.1:p.Gly674Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant 7 NM_001346899.2:c.2021G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform g precursor NP_001333828.1:p.Gly674Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant X1 XM_047419952.1:c.1997G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform X1 XP_047275908.1:p.Gly666Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant X1 XM_047419952.1:c.1997G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform X1 XP_047275908.1:p.Gly666Ala G (Gly) > A (Ala) Missense Variant
EGFR transcript variant X2 XM_047419953.1:c.1997G>A G [GGC] > D [GAC] Coding Sequence Variant
epidermal growth factor receptor isoform X1 XP_047275909.1:p.Gly666Asp G (Gly) > D (Asp) Missense Variant
EGFR transcript variant X2 XM_047419953.1:c.1997G>C G [GGC] > A [GCC] Coding Sequence Variant
epidermal growth factor receptor isoform X1 XP_047275909.1:p.Gly666Ala G (Gly) > A (Ala) 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: A (allele ID: 362954 )
ClinVar Accession Disease Names Clinical Significance
RCV000418583.1 Non-small cell lung carcinoma Likely-Pathogenic
RCV000420993.1 Squamous cell lung carcinoma Likely-Pathogenic
RCV000428419.1 Glioblastoma Likely-Pathogenic
RCV000439067.1 Lung adenocarcinoma Likely-Pathogenic
Allele: C (allele ID: 54392 )
ClinVar Accession Disease Names Clinical Significance
RCV000038381.6 Non-small cell lung carcinoma Pathogenic
RCV000426037.1 Glioblastoma Likely-Pathogenic
RCV000436293.1 Lung adenocarcinoma Likely-Pathogenic
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
GRCh38.p14 chr 7 NC_000007.14:g.55174015= NC_000007.14:g.55174015G>A NC_000007.14:g.55174015G>C
GRCh37.p13 chr 7 NC_000007.13:g.55241708= NC_000007.13:g.55241708G>A NC_000007.13:g.55241708G>C
EGFR RefSeqGene (LRG_304) NG_007726.3:g.159984= NG_007726.3:g.159984G>A NG_007726.3:g.159984G>C
EGFR transcript variant 1 NM_005228.5:c.2156= NM_005228.5:c.2156G>A NM_005228.5:c.2156G>C
EGFR transcript variant 1 NM_005228.4:c.2156= NM_005228.4:c.2156G>A NM_005228.4:c.2156G>C
EGFR transcript variant 1 NM_005228.3:c.2156= NM_005228.3:c.2156G>A NM_005228.3:c.2156G>C
EGFR transcript variant 7 NM_001346899.2:c.2021= NM_001346899.2:c.2021G>A NM_001346899.2:c.2021G>C
EGFR transcript variant 7 NM_001346899.1:c.2021= NM_001346899.1:c.2021G>A NM_001346899.1:c.2021G>C
EGFR transcript variant 8 NM_001346900.2:c.1997= NM_001346900.2:c.1997G>A NM_001346900.2:c.1997G>C
EGFR transcript variant 8 NM_001346900.1:c.1997= NM_001346900.1:c.1997G>A NM_001346900.1:c.1997G>C
EGFR transcript variant EGFRvIII NM_001346941.2:c.1355= NM_001346941.2:c.1355G>A NM_001346941.2:c.1355G>C
EGFR transcript variant EGFRvIII NM_001346941.1:c.1355= NM_001346941.1:c.1355G>A NM_001346941.1:c.1355G>C
EGFR transcript variant 6 NM_001346898.2:c.2156= NM_001346898.2:c.2156G>A NM_001346898.2:c.2156G>C
EGFR transcript variant 6 NM_001346898.1:c.2156= NM_001346898.1:c.2156G>A NM_001346898.1:c.2156G>C
EGFR transcript variant 5 NM_001346897.2:c.2021= NM_001346897.2:c.2021G>A NM_001346897.2:c.2021G>C
EGFR transcript variant 5 NM_001346897.1:c.2021= NM_001346897.1:c.2021G>A NM_001346897.1:c.2021G>C
EGFR transcript variant X1 XM_047419952.1:c.1997= XM_047419952.1:c.1997G>A XM_047419952.1:c.1997G>C
EGFR transcript variant X2 XM_047419953.1:c.1997= XM_047419953.1:c.1997G>A XM_047419953.1:c.1997G>C
epidermal growth factor receptor isoform a precursor NP_005219.2:p.Gly719= NP_005219.2:p.Gly719Asp NP_005219.2:p.Gly719Ala
epidermal growth factor receptor isoform g precursor NP_001333828.1:p.Gly674= NP_001333828.1:p.Gly674Asp NP_001333828.1:p.Gly674Ala
epidermal growth factor receptor isoform h NP_001333829.1:p.Gly666= NP_001333829.1:p.Gly666Asp NP_001333829.1:p.Gly666Ala
epidermal growth factor receptor isoform i precursor NP_001333870.1:p.Gly452= NP_001333870.1:p.Gly452Asp NP_001333870.1:p.Gly452Ala
epidermal growth factor receptor isoform f precursor NP_001333827.1:p.Gly719= NP_001333827.1:p.Gly719Asp NP_001333827.1:p.Gly719Ala
epidermal growth factor receptor isoform e precursor NP_001333826.1:p.Gly674= NP_001333826.1:p.Gly674Asp NP_001333826.1:p.Gly674Ala
epidermal growth factor receptor isoform X1 XP_047275908.1:p.Gly666= XP_047275908.1:p.Gly666Asp XP_047275908.1:p.Gly666Ala
epidermal growth factor receptor isoform X1 XP_047275909.1:p.Gly666= XP_047275909.1:p.Gly666Asp XP_047275909.1:p.Gly666Ala
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#.

6 SubSNP, 7 ClinVar submissions
No Submitter Submission ID Date (Build)
1 DF-BWCC ss275515292 Nov 22, 2010 (133)
2 DF-BWCC ss275515294 Nov 22, 2010 (133)
3 CSS-BFX ss5442108709 Oct 14, 2022 (156)
4 CSS-BFX ss5442108710 Oct 14, 2022 (156)
5 EVA ss5512433101 Oct 14, 2022 (156)
6 EVA ss5935864412 Oct 14, 2022 (156)
7 ClinVar RCV000038381.6 Oct 14, 2022 (156)
8 ClinVar RCV000418583.1 Oct 12, 2018 (152)
9 ClinVar RCV000420993.1 Oct 12, 2018 (152)
10 ClinVar RCV000426037.1 Oct 12, 2018 (152)
11 ClinVar RCV000428419.1 Oct 12, 2018 (152)
12 ClinVar RCV000436293.1 Oct 12, 2018 (152)
13 ClinVar RCV000439067.1 Oct 12, 2018 (152)
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)
rs121913429 May 06, 2011 (133)
Added to this RefSNP Cluster:
Submission IDs Observation SPDI Canonical SPDI Source RSIDs
ss5442108709, ss5512433101, ss5935864412 NC_000007.13:55241707:G:A NC_000007.14:55174014:G:A
RCV000418583.1, RCV000420993.1, RCV000428419.1, RCV000439067.1, ss275515294 NC_000007.14:55174014:G:A NC_000007.14:55174014:G:A (self)
ss5442108710, ss5512433101, ss5935864412 NC_000007.13:55241707:G:C NC_000007.14:55174014:G:C
RCV000038381.6, RCV000426037.1, RCV000436293.1, ss275515292 NC_000007.14:55174014:G:C NC_000007.14:55174014:G:C (self)
Help

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

18 citations for rs121913428
PMID Title Author Year Journal
2302402 Effects of marine oil-enriched diets on guinea pig megakaryocyte and platelet lipids: effects on thromboxane synthesis and platelet function. Schick PK et al. 1990 Biochimica et biophysica acta
15118073 Activating mutations in the epidermal growth factor receptor underlying responsiveness of non-small-cell lung cancer to gefitinib. Lynch TJ et al. 2004 The New England journal of medicine
15118125 EGFR mutations in lung cancer: correlation with clinical response to gefitinib therapy. Paez JG et al. 2004 Science (New York, N.Y.)
15329413 EGF receptor gene mutations are common in lung cancers from "never smokers" and are associated with sensitivity of tumors to gefitinib and erlotinib. Pao W et al. 2004 Proceedings of the National Academy of Sciences of the United States of America
15710947 Predictive and prognostic impact of epidermal growth factor receptor mutation in non-small-cell lung cancer patients treated with gefitinib. Han SW et al. 2005 Journal of clinical oncology
15738541 Mutations of the epidermal growth factor receptor gene predict prolonged survival after gefitinib treatment in patients with non-small-cell lung cancer with postoperative recurrence. Mitsudomi T et al. 2005 Journal of clinical oncology
16011858 Mutations in the tyrosine kinase domain of the EGFR gene associated with gefitinib response in non-small-cell lung cancer. Rosell R et al. 2005 Lung cancer (Amsterdam, Netherlands)
16115929 Activating mutations in the tyrosine kinase domain of the epidermal growth factor receptor are associated with improved survival in gefitinib-treated chemorefractory lung adenocarcinomas. Taron M et al. 2005 Clinical cancer research
18458038 First-line gefitinib in patients with advanced non-small-cell lung cancer harboring somatic EGFR mutations. Sequist LV et al. 2008 Journal of clinical oncology
19922469 Epidermal growth factor receptor in relation to tumor development: EGFR gene and cancer. Mitsudomi T et al. 2010 The FEBS journal
20479403 Neratinib, an irreversible pan-ErbB receptor tyrosine kinase inhibitor: results of a phase II trial in patients with advanced non-small-cell lung cancer. Sequist LV et al. 2010 Journal of clinical oncology
21531810 Effectiveness of tyrosine kinase inhibitors on "uncommon" epidermal growth factor receptor mutations of unknown clinical significance in non-small cell lung cancer. Wu JY et al. 2011 Clinical cancer research
22753918 Randomized phase II study of dacomitinib (PF-00299804), an irreversible pan-human epidermal growth factor receptor inhibitor, versus erlotinib in patients with advanced non-small-cell lung cancer. Ramalingam SS et al. 2012 Journal of clinical oncology
23102728 MEK inhibitors reverse resistance in epidermal growth factor receptor mutation lung cancer cells with acquired resistance to gefitinib. Huang MH et al. 2013 Molecular oncology
23242437 Compound EGFR mutations and response to EGFR tyrosine kinase inhibitors. Kobayashi S et al. 2013 Journal of thoracic oncology
24033266 A systematic approach to assessing the clinical significance of genetic variants. Duzkale H et al. 2013 Clinical genetics
25157968 Prospective enterprise-level molecular genotyping of a cohort of cancer patients. MacConaill LE et al. 2014 The Journal of molecular diagnostics
26619011 Identifying recurrent mutations in cancer reveals widespread lineage diversity and mutational specificity. Chang MT et al. 2016 Nature biotechnology
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