Variant rs281865072 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM2PM5BP4_Moderate

The NM_000748.3(CHRNB2):c.1010T>A(p.Val337Asp) 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. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V337G) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CHRNB2
NM_000748.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.194

Variant links:

Genes affected

CHRNB2 (HGNC:1962): (cholinergic receptor nicotinic beta 2 subunit) Neuronal acetylcholine receptors are homo- or heteropentameric complexes composed of homologous alpha and beta subunits. They belong to a superfamily of ligand-gated ion channels which allow the flow of sodium and potassium across the plasma membrane in response to ligands such as acetylcholine and nicotine. This gene encodes one of several beta subunits. Mutations in this gene are associated with autosomal dominant nocturnal frontal lobe epilepsy. [provided by RefSeq, Jul 2008]

CHRNB2 links:

CHRNB2 (HGNC:):

CHRNB2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr1-154571833-T-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3391473.Status of the report is criteria_provided_single_submitter, 1 stars.

BP4

Computational evidence support a benign effect (MetaRNN=0.14771953).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHRNB2	NM_000748.3 linkuse as main transcript	c.1010T>A	p.Val337Asp	missense_variant	5/6	ENST00000368476.4	NP_000739.1	P17787Q5SXY3
CHRNB2	XM_017000180.3 linkuse as main transcript	c.500T>A	p.Val167Asp	missense_variant	2/3		XP_016855669.1
CHRNB2	XR_001736952.3 linkuse as main transcript	n.1277T>A		non_coding_transcript_exon_variant	5/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CHRNB2	ENST00000368476.4 linkuse as main transcript	c.1010T>A	p.Val337Asp	missense_variant	5/6	1	NM_000748.3	ENSP00000357461.3	P17787
CHRNB2	ENST00000637900.1 linkuse as main transcript	c.1016T>A	p.Val339Asp	missense_variant	5/6	5		ENSP00000490474.1	A0A1B0GVD7
CHRNB2	ENST00000636034.1 linkuse as main transcript	n.1010T>A		non_coding_transcript_exon_variant	5/9	5		ENSP00000489703.1	A0A1B0GTH5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248322

Hom.:

AF XY:

0.00000743

AC XY:

AN XY:

134524

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000892

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

6.85e-7

AC:

AN:

1460862

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726782

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Uncertain

0.069

BayesDel_noAF

Benign

-0.14

CADD

Benign

DANN

Benign

0.81

DEOGEN2

Uncertain

0.50

D;.

Eigen

Benign

-0.67

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.23

LIST_S2

Uncertain

0.86

D;D

M_CAP

Benign

0.085

MetaRNN

Benign

0.15

T;T

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.7

M;.

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.68

N;.

REVEL

Uncertain

0.51

Sift

Benign

0.26

T;.

Sift4G

Benign

0.14

T;.

Polyphen

0.31

B;.

Vest4

0.58

MutPred

0.52

Loss of ubiquitination at K342 (P = 0.1668);.;

MVP

0.94

MPC

1.9

ClinPred

0.057

GERP RS

1.6

Varity_R

0.44

gMVP

0.92

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over