chr7-55019291-G-A

Position:

• chr7-55019291-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005228.5(EGFR):​c.14G>A​(p.Gly5Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000737 in 1,356,648 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.4e-7 (0 hom.)
• Consequence: EGFR NM_005228.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.290

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.22789487).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EGFR	NM_005228.5	c.14G>A	p.Gly5Glu	missense_variant	1/28	ENST00000275493.7	NP_005219.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EGFR	ENST00000275493.7	c.14G>A	p.Gly5Glu	missense_variant	1/28	1	NM_005228.5	ENSP00000275493	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.37e-7 AC: 1 AN: 1356648 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 672728

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.47e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000471 Hom.: 0

ExAC AF: 0.00000848 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

EGFR-related lung cancer Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 04, 2021

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 output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glutamic acid amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with EGFR-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This sequence change replaces glycine with glutamic acid at codon 5 of the EGFR protein (p.Gly5Glu). The glycine residue is weakly conserved and there is a moderate physicochemical difference between glycine and glutamic acid. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.053	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	T;.;T;.;.;T
Eigen	Benign	-0.78
Eigen_PC	Benign	-0.82
FATHMM_MKL	Benign	0.068	N
LIST_S2	Benign	0.72	T;T;T;T;T;T
M_CAP	Pathogenic	0.97	D
MetaRNN	Benign	0.23	T;T;T;T;T;T
MetaSVM	Benign	-0.64	T
MutationAssessor	Benign	1.4	.;L;.;L;L;L
MutationTaster	Benign	1.0	N;N;N;N;N;N
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	0.43	N;N;.;N;N;N
REVEL	Benign	0.16
Sift	Uncertain	0.024	D;D;.;D;D;D
Sift4G	Benign	0.21	T;T;T;T;T;T
Polyphen		0.011	B;B;.;B;B;B
Vest4		0.11
MutPred		0.29		Loss of catalytic residue at G5 (P = 2e-04);Loss of catalytic residue at G5 (P = 2e-04);Loss of catalytic residue at G5 (P = 2e-04);Loss of catalytic residue at G5 (P = 2e-04);Loss of catalytic residue at G5 (P = 2e-04);Loss of catalytic residue at G5 (P = 2e-04);
MVP		0.71
MPC		0.85
ClinPred		0.14	T
GERP RS		3.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.12
gMVP		0.49

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: rs759582787; hg19: chr7-55086984;