Genetic Variant NRG1:p.Thr41Thr (chr8-31640107-C-G) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The ENST00000520407.5(NRG1):c.123C>G(p.Thr41Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000348 in 1,150,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T41T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000030 ( 0 hom. )

Consequence

NRG1
ENST00000520407.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.262

Publications

1 publications found

Variant links:

Genes affected

NRG1 (HGNC:7997): (neuregulin 1) The protein encoded by this gene is a membrane glycoprotein that mediates cell-cell signaling and plays a critical role in the growth and development of multiple organ systems. An extraordinary variety of different isoforms are produced from this gene through alternative promoter usage and splicing. These isoforms are expressed in a tissue-specific manner and differ significantly in their structure, and are classified as types I, II, III, IV, V and VI. Dysregulation of this gene has been linked to diseases such as cancer, schizophrenia, and bipolar disorder (BPD). [provided by RefSeq, Apr 2016]

NRG1 Gene-Disease associations (from GenCC):

schizophrenia 6
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

NRG1 links:

ENSG00000302325 (HGNC:):

ENSG00000302325 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.34).

BP7

Synonymous conserved (PhyloP=0.262 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	Protein	UniProt
NRG1	NM_013962.3 link	c.123C>G	p.Thr41Thr	synonymous_variant	Exon 1 of 5	NP_039256.2	Q02297-9
NRG1	XM_011544512.3 link	c.123C>G	p.Thr41Thr	synonymous_variant	Exon 1 of 13	XP_011542814.2
NRG1	XM_017013367.2 link	c.123C>G	p.Thr41Thr	synonymous_variant	Exon 1 of 11	XP_016868856.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	Protein	UniProt
NRG1	ENST00000520407.5 link	c.123C>G	p.Thr41Thr	synonymous_variant	Exon 1 of 5	1	ENSP00000434640.1	Q02297-9
NRG1	ENST00000650866.1 link	c.37+676C>G		intron_variant	Intron 1 of 12		ENSP00000499045.1	A0A494C1F5
NRG1	ENST00000652698.1 link	c.37+676C>G		intron_variant	Intron 1 of 11		ENSP00000499008.1	A0A494C1F8

Frequencies

GnomAD3 genomes

AF:

0.00000674

AC:

AN:

148444

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000150

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000300

AC:

AN:

1001638

Hom.:

Cov.:

AF XY:

0.00000420

AC XY:

AN XY:

475634

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

19628

American (AMR)

AF:

0.00

AC:

AN:

5732

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

10166

East Asian (EAS)

AF:

0.00

AC:

AN:

18644

South Asian (SAS)

AF:

0.0000497

AC:

AN:

20112

European-Finnish (FIN)

AF:

0.00

AC:

AN:

17058

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2440

European-Non Finnish (NFE)

AF:

0.00000230

AC:

AN:

870770

Other (OTH)

AF:

0.00

AC:

AN:

37088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.542

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000674

AC:

AN:

148444

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

72302

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41062

American (AMR)

AF:

0.00

AC:

AN:

14952

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3412

East Asian (EAS)

AF:

0.00

AC:

AN:

5118

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9184

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000150

AC:

AN:

66610

Other (OTH)

AF:

0.00

AC:

AN:

2050

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Benign

0.93

PhyloP100

0.26

PromoterAI

-0.0022

Neutral

(source)

Splicing

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

Publications

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8-31640107-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over