rs373824622

chr17-39708478-C-Achr17-39708478-C-Gchr17-39708478-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_004448.4(ERBB2):c.383C>A(p.Pro128His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P128A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ERBB2 NM_004448.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.522

Genes affected

ERBB2 (HGNC:3430): (erb-b2 receptor tyrosine kinase 2) This gene encodes a member of the epidermal growth factor (EGF) receptor family of receptor tyrosine kinases. This protein has no ligand binding domain of its own and therefore cannot bind growth factors. However, it does bind tightly to other ligand-bound EGF receptor family members to form a heterodimer, stabilizing ligand binding and enhancing kinase-mediated activation of downstream signalling pathways, such as those involving mitogen-activated protein kinase and phosphatidylinositol-3 kinase. Allelic variations at amino acid positions 654 and 655 of isoform a (positions 624 and 625 of isoform b) have been reported, with the most common allele, Ile654/Ile655, shown here. Amplification and/or overexpression of this gene has been reported in numerous cancers, including breast and ovarian tumors. Alternative splicing results in several additional transcript variants, some encoding different isoforms and others that have not been fully characterized. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, ERBB2
• BP4: Computational evidence support a benign effect (MetaRNN=0.25868836).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ERBB2	NM_004448.4	c.383C>A	p.Pro128His	missense_variant	3/27	ENST00000269571.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ERBB2	ENST00000269571.10	c.383C>A	p.Pro128His	missense_variant	3/27	1	NM_004448.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.086
BayesDel_addAF	Uncertain	0.056	T
BayesDel_noAF	Benign	-0.16
Cadd	Benign	17
Dann	Benign	0.89
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.23
FATHMM_MKL	Benign	0.51	D
M_CAP	Benign	0.084	D
MetaRNN	Benign	0.26	T;T;T;T;T;T;T
MetaSVM	Benign	-0.42	T
MutationTaster	Benign	1.0	D;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.30	T
Sift4G	Benign	0.17	T;T;T;T;T;T;D
Polyphen		0.71, 0.40, 0.30	.;P;.;B;.;B;.
Vest4		0.24
MutPred		0.43		.;.;.;.;Gain of catalytic residue at P128 (P = 0.0503);Gain of catalytic residue at P128 (P = 0.0503);.;
MVP		0.74
MPC		0.73
ClinPred		0.33	T
GERP RS		4.8
Varity_R		0.076
gMVP		0.44

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-37864731;