10-81875779-T-G

Position:

• chr10-81875779-T-G

Variant summary

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

The NM_001010848.4(NRG3):​c.439T>G​(p.Ser147Ala) 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. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NRG3 NM_001010848.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.11

Genes affected

NRG3 (HGNC:7999): (neuregulin 3) This gene is a member of the neuregulin gene family. This gene family encodes ligands for the transmembrane tyrosine kinase receptors ERBB3 and ERBB4 - members of the epidermal growth factor receptor family. Ligand binding activates intracellular signaling cascades and the induction of cellular responses including proliferation, migration, differentiation, and survival or apoptosis. This gene encodes neuregulin 3 (NRG3). NRG3 has been shown to activate the tyrosine phosphorylation of its cognate receptor, ERBB4, and is thought to influence neuroblast proliferation, migration and differentiation by signalling through ERBB4. NRG3 also promotes mammary differentiation during embryogenesis. Linkage studies have implicated this gene as a susceptibility locus for schizophrenia and schizoaffective disorder. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional transcript variants have been described but their biological validity has not been verified.[provided by RefSeq, Sep 2009]

NRG3 (HGNC:):

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=0.153178).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NRG3	NM_001010848.4	c.439T>G	p.Ser147Ala	missense_variant	1/9	ENST00000372141.7	NP_001010848.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NRG3	ENST00000372141.7	c.439T>G	p.Ser147Ala	missense_variant	1/9	1	NM_001010848.4	ENSP00000361214.2
NRG3	ENST00000404547.5	c.439T>G	p.Ser147Ala	missense_variant	1/10	1		ENSP00000384796.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

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

Ambry Genetics

Sep 02, 2024

The c.439T>G (p.S147A) alteration is located in exon 1 (coding exon 1) of the NRG3 gene. This alteration results from a T to G substitution at nucleotide position 439, causing the serine (S) at amino acid position 147 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.076
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	22
DANN	Benign	0.90
DEOGEN2	Benign	0.20	.;T
Eigen	Benign	-0.098
Eigen_PC	Benign	-0.064
FATHMM_MKL	Benign	0.50	D
LIST_S2	Benign	0.53	T;T
M_CAP	Benign	0.027	D
MetaRNN	Benign	0.15	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	N;N
PrimateAI	Pathogenic	0.80	T
PROVEAN	Benign	-0.47	N;N
REVEL	Benign	0.029
Sift	Benign	0.12	T;T
Sift4G	Benign	0.10	T;T
Polyphen		0.89	P;.
Vest4		0.34
MutPred		0.27		Loss of glycosylation at S147 (P = 0.0075);Loss of glycosylation at S147 (P = 0.0075);
MVP		0.42
MPC		0.52
ClinPred		0.19	T
GERP RS		2.9
Varity_R		0.12
gMVP		0.17

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: rs1419344637; hg19: chr10-83635535;