8-32549476-T-C

Variant names:

• chr8-32549476-T-C
• rs4733130
• NM_013964.5:c.100+650T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_013964.5(NRG1):​c.100+650T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.392 in 152,092 control chromosomes in the GnomAD database, including 12,745 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.39 (12745 hom., cov: 33)
• Consequence: NRG1 NM_013964.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.19
• Publications: 12 publications found

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.76).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.476 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_013964.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NRG1	NM_013964.5	MANE Select	c.100+650T>C		intron	N/A	NP_039258.1
	NRG1	NM_013956.5		c.100+650T>C		intron	N/A	NP_039250.2
	NRG1	NM_013957.5		c.100+650T>C		intron	N/A	NP_039251.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NRG1	ENST00000405005.8	TSL:1 MANE Select	c.100+650T>C		intron	N/A	ENSP00000384620.2
	NRG1	ENST00000287842.7	TSL:1	c.100+650T>C		intron	N/A	ENSP00000287842.4
	NRG1	ENST00000356819.7	TSL:1	c.100+650T>C		intron	N/A	ENSP00000349275.6

Frequencies

GnomAD3 genomes AF: 0.392 AC: 59539 AN: 151974 Hom.: 12738 Cov.: 33

Gnomad AFR AF: 0.230

Gnomad AMI AF: 0.452

Gnomad AMR AF: 0.485

Gnomad ASJ AF: 0.387

Gnomad EAS AF: 0.177

Gnomad SAS AF: 0.408

Gnomad FIN AF: 0.557

Gnomad MID AF: 0.357

Gnomad NFE AF: 0.459

Gnomad OTH AF: 0.385

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.392 AC: 59570 AN: 152092 Hom.: 12745 Cov.: 33 AF XY: 0.395 AC XY: 29354 AN XY: 74342

African (AFR) AF: 0.230 AC: 9536 AN: 41518

American (AMR) AF: 0.485 AC: 7416 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.387 AC: 1341 AN: 3466

East Asian (EAS) AF: 0.176 AC: 913 AN: 5174

South Asian (SAS) AF: 0.408 AC: 1962 AN: 4812

European-Finnish (FIN) AF: 0.557 AC: 5891 AN: 10572

Middle Eastern (MID) AF: 0.363 AC: 106 AN: 292

European-Non Finnish (NFE) AF: 0.459 AC: 31180 AN: 67956

Other (OTH) AF: 0.385 AC: 814 AN: 2112

Alfa AF: 0.433 Hom.: 49714

Bravo AF: 0.379

Asia WGS AF: 0.342 AC: 1189 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.76
CADD	Benign	16
DANN	Benign	0.73
PhyloP100		1.2
Mutation Taster		=100/0	polymorphism (auto)

Splicing

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

Other links and lift over

dbSNP: rs4733130; hg19: chr8-32406994;