7-55181314-G-T

Position:

• chr7-55181314-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_005228.5(EGFR):​c.2305G>T​(p.Val769Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: EGFR NM_005228.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.96

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:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EGFR	NM_005228.5	c.2305G>T	p.Val769Leu	missense_variant	20/28	ENST00000275493.7	NP_005219.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EGFR	ENST00000275493.7	c.2305G>T	p.Val769Leu	missense_variant	20/28	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:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Mar 23, 2012

The Val769Leu variant in exon 20 of EGFR has previously been reported in the literature together with the Ser768Ile variant in exon 20 of EGFR (Asahina 2006). This combination of sequence alterations has been previously reported in one individual that did not demonstrate responsiveness to the EGFR TKI gefitinib (Asahina 2006). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.86
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.060
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.39	T;T;T
Eigen	Uncertain	0.25
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.74	T;T;T
M_CAP	Benign	0.038	D
MetaRNN	Uncertain	0.67	D;D;D
MetaSVM	Benign	-0.86	T
MutationAssessor	Benign	-0.35	.;.;N
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-1.3	N;.;N
REVEL	Benign	0.29
Sift	Benign	0.43	T;.;T
Sift4G	Benign	0.34	T;T;T
Polyphen		0.82	P;.;P
Vest4		0.82
MutPred		0.53		.;.;Loss of catalytic residue at V769 (P = 0.1843);
MVP		0.84
MPC		1.4
ClinPred		0.96	D
GERP RS		5.8
Varity_R		0.77
gMVP		0.66

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

Publications

LitVar

Other links and lift over

dbSNP: rs147149347; hg19: chr7-55249007; COSMIC: COSV51811749;