rs121913465

Variant names:

• chr7-55181312-G-A
• rs121913465
• NM_005228.5:c.2303G>A

Your query was ambiguous. Multiple possible variants found:

• chr7-55181312-G-A
• chr7-55181312-G-C
• chr7-55181312-G-T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1 PM2 PM5 PP3

The NM_005228.5(EGFR):​c.2303G>A​(p.Ser768Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S768G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 34)
• Consequence: EGFR NM_005228.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 9.96
• Publications: 1372 publications found

Genes affected

EGFR (HGNC:3236): (epidermal growth factor receptor) The protein encoded by this gene is a transmembrane glycoprotein that is a member of the protein kinase superfamily. This protein is a receptor for members of the epidermal growth factor family. EGFR is a cell surface protein that binds to epidermal growth factor, thus inducing receptor dimerization and tyrosine autophosphorylation leading to cell proliferation. Mutations in this gene are associated with lung cancer. EGFR is a component of the cytokine storm which contributes to a severe form of Coronavirus Disease 2019 (COVID-19) resulting from infection with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). [provided by RefSeq, Jul 2020]

EGFR-AS1 (HGNC:40207): (EGFR antisense RNA 1)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM1: In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 26 uncertain in NM_005228.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr7-55181312-GC-TT is described in ClinVar as Pathogenic. ClinVar VariationId is 45252.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.801

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EGFR	NM_005228.5	c.2303G>A	p.Ser768Asn	missense_variant	Exon 20 of 28	ENST00000275493.7	NP_005219.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EGFR	ENST00000275493.7	c.2303G>A	p.Ser768Asn	missense_variant	Exon 20 of 28	1	NM_005228.5	ENSP00000275493.2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 34

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

EGFR-related lung cancer Uncertain:1

Mar 26, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 1015382). This variant has not been reported in the literature in individuals affected with EGFR-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 768 of the EGFR protein (p.Ser768Asn).

Hereditary cancer-predisposing syndrome Uncertain:1

May 23, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.S768N variant (also known as c.2303G>A), located in coding exon 20 of the EGFR gene, results from a G to A substitution at nucleotide position 2303. The serine at codon 768 is replaced by asparagine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear.

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Uncertain	0.055	T
BayesDel_noAF	Benign	-0.16
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.62	D;D;D
Eigen	Pathogenic	0.76
Eigen_PC	Pathogenic	0.82
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.80	D;D;D
MetaSVM	Uncertain	0.34	D
MutationAssessor	Benign	0.0	.;.;L
PhyloP100		10
PrimateAI	Pathogenic	0.80	D
PROVEAN	Benign	-2.0	N;.;N
Sift	Uncertain	0.0020	D;.;D
Sift4G	Uncertain	0.0080	D;D;D
Vest4		0.68
ClinPred		0.95	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.90
gMVP		0.63
Mutation Taster		=17/83	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs121913465; hg19: chr7-55249005;