rs3735774

Variant names:

• chr8-32647853-G-A
• rs3735774
• ENST00000520502.7:c.136G>A

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_Strong BP6 BA1

The NM_001322205.2(NRG1):​c.136G>A​(p.Gly46Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00234 in 1,614,042 control chromosomes in the GnomAD database, including 136 homozygotes. In-silico tool predicts a benign outcome for this variant. 9/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

• Frequency:
  • Genomes: 𝑓 0.0028 (15 hom., cov: 31)
  • Exomes 𝑓: 0.0023 (121 hom.)
• Consequence: NRG1 NM_001322205.2 missense
• Clinical Significance: Benign no assertion criteria provided B:1
• Conservation: PhyloP100: 1.53

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]

ACMG classification

Our verdict: Benign. The variant received -13 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0015679002).
• BP6: Variant 8-32647853-G-A is Benign according to our data. Variant chr8-32647853-G-A is described in ClinVar as [Benign]. Clinvar id is 3060573.Status of the report is no_assertion_criteria_provided, 0 stars.
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.0677 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NRG1	NM_013964.5	c.502+30968G>A		intron_variant	Intron 5 of 11	ENST00000405005.8	NP_039258.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NRG1	ENST00000405005.8	c.502+30968G>A		intron_variant	Intron 5 of 11	1	NM_013964.5	ENSP00000384620.2

Frequencies

GnomAD3 genomes AF: 0.00281 AC: 428 AN: 152046 Hom.: 15 Cov.: 31

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00137

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0737

Gnomad SAS AF: 0.00229

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000882

Gnomad OTH AF: 0.00239

GnomAD2 exomes AF: 0.00555 AC: 1395 AN: 251332 AF XY: 0.00484

Gnomad AFR exome AF: 0.000308

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0731

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000440

Gnomad OTH exome AF: 0.00228

GnomAD4 exome AF: 0.00229 AC: 3343 AN: 1461878 Hom.: 121 Cov.: 35 AF XY: 0.00219 AC XY: 1592 AN XY: 727242

Gnomad4 AFR exome AF: 0.000209 AC: 7 AN: 33480

Gnomad4 AMR exome AF: 0.000157 AC: 7 AN: 44724

Gnomad4 ASJ exome AF: 0.00 AC: 0 AN: 26136

Gnomad4 EAS exome AF: 0.0743 AC: 2950 AN: 39698

Gnomad4 SAS exome AF: 0.000777 AC: 67 AN: 86258

Gnomad4 FIN exome AF: 0.0000187 AC: 1 AN: 53408

Gnomad4 NFE exome AF: 0.0000198 AC: 22 AN: 1112010

Gnomad4 Remaining exome AF: 0.00475 AC: 287 AN: 60396

GnomAD4 genome AF: 0.00281 AC: 428 AN: 152164 Hom.: 15 Cov.: 31 AF XY: 0.00301 AC XY: 224 AN XY: 74404

Gnomad4 AFR AF: 0.000120 AC: 0.000120412 AN: 0.000120412

Gnomad4 AMR AF: 0.00137 AC: 0.00137255 AN: 0.00137255

Gnomad4 ASJ AF: 0.00 AC: 0 AN: 0

Gnomad4 EAS AF: 0.0738 AC: 0.0738438 AN: 0.0738438

Gnomad4 SAS AF: 0.00229 AC: 0.00229071 AN: 0.00229071

Gnomad4 FIN AF: 0.00 AC: 0 AN: 0

Gnomad4 NFE AF: 0.0000882 AC: 0.0000882405 AN: 0.0000882405

Gnomad4 OTH AF: 0.00237 AC: 0.00236967 AN: 0.00236967

Alfa AF: 0.00186 Hom.: 22

Bravo AF: 0.00280

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00526 AC: 639

Asia WGS AF: 0.0260 AC: 89 AN: 3478

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

NRG1-related disorder Benign:1

Feb 18, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.66	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	15
DANN	Uncertain	1.0
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.17
FATHMM_MKL	Benign	0.39	N
LIST_S2	Benign	0.77	T;.
MetaRNN	Benign	0.0016	T;T
MetaSVM	Benign	-1.1	T
PROVEAN	Benign	-0.34	N;D
REVEL	Benign	0.060
Sift	Benign	0.41	T;T
Sift4G	Benign	0.25	T;T
Polyphen		0.0030	B;.
Vest4		0.10
MutPred		0.077		Loss of relative solvent accessibility (P = 0.0676);.;
MVP		0.093
ClinPred		0.013	T
GERP RS		5.2
Mutation Taster		=97/3	polymorphism (auto)

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs3735774; hg19: chr8-32505372; COSMIC: COSV55178519;