chr7-55174774-AATTAAGAGAAGCAACATC-T

Position:

• chr7-55174774-AATTAAGAGAAGCAACATC-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PM4 PP3 PP5

The NM_005228.5(EGFR):​c.2237_2255delinsT​(p.Glu746_Ser752delinsVal) variant causes a protein altering 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 Likely pathogenic,drug response (no stars). Synonymous variant affecting the same amino acid position (i.e. ELREA746EP) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: EGFR NM_005228.5 protein_altering
• Clinical Significance: Likely pathogenic; drug response no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 9.89

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 14 uncertain in NM_005228.5
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_005228.5.
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP
• PP5: Variant 7-55174774-AATTAAGAGAAGCAACATC-T is Pathogenic according to our data. Variant chr7-55174774-AATTAAGAGAAGCAACATC-T is described in ClinVar as [Likely_pathogenic, drug_response]. Clinvar id is 177652.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EGFR	NM_005228.5	c.2237_2255delinsT	p.Glu746_Ser752delinsVal	protein_altering_variant	19/28	ENST00000275493.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EGFR	ENST00000275493.7	c.2237_2255delinsT	p.Glu746_Ser752delinsVal	protein_altering_variant	19/28	1	NM_005228.5	P1
EGFR	ENST00000455089.5	c.2102_2120delinsT	p.Glu701_Ser707delinsVal	protein_altering_variant	18/26	1
EGFR	ENST00000450046.2	c.2078_2096delinsT	p.Glu693_Ser699delinsVal	protein_altering_variant	19/28	4
EGFR	ENST00000700145.1	c.586_604delinsT	p.Glu196_Ser202delinsVal	protein_altering_variant	6/9

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic; drug response

Submissions summary: Pathogenic:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Lung adenocarcinoma Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

Key Laboratory of Carcinogenesis and Cancer Invasion, Central South University

-

- -

Tyrosine kinase inhibitor response Other:1

drug response, no assertion criteria provided

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Oct 28, 2006

- Responsive

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs727504258; hg19: chr7-55242467; COSMIC: COSV51765862; COSMIC: COSV51765862;