Variant 15-78625219-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP5BP4

The NM_000750.5(CHRNB4):c.1411G>C(p.Val471Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000277 in 1,443,350 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

CHRNB4
NM_000750.5 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 3.30

Variant links:

Genes affected

CHRNB4 (HGNC:1964): (cholinergic receptor nicotinic beta 4 subunit) This gene is found within a conserved gene cluster and encodes one of the beta subunits of the nicotinic acetylcholine receptor (nAChRs) superfamily which form ligand-gated ion channels with a central pore that forms a cation channel. Neuronal nAChRs are pentameric structures that can be either homomeric or heteromeric, with heteromeric structures containing both alpha and beta subunits. Each subunit contains an extracellular amino terminus and four transmembrane domains. Nicotine is one of the agonists that binds to the receptor. Variants in this gene have been associated with nicotine dependence and lung cancer. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Sep 2017]

CHRNB4 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;

PP5

Variant 15-78625219-C-G is Pathogenic according to our data. Variant chr15-78625219-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 3336651.Status of the report is no_assertion_criteria_provided, 0 stars.

BP4

Computational evidence support a benign effect (MetaRNN=0.3281076). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHRNB4	NM_000750.5 link	c.1411G>C	p.Val471Leu	missense_variant	Exon 6 of 6	ENST00000261751.8	NP_000741.1	P30926-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHRNB4	ENST00000261751.8 link	c.1411G>C	p.Val471Leu	missense_variant	Exon 6 of 6	1	NM_000750.5	ENSP00000261751.3		P30926-1
CHRNB4	ENST00000412074.6 link	c.432G>C	p.Ala144Ala	synonymous_variant	Exon 5 of 5	1		ENSP00000416386.2		P30926-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000426

AC:

AN:

234602

Hom.:

AF XY:

0.00000786

AC XY:

AN XY:

127278

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:

0.00000929

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000277

AC:

AN:

1443350

Hom.:

Cov.:

AF XY:

0.00000279

AC XY:

AN XY:

717102

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:

0.00000363

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Chronic obstructive pulmonary disease

Pathogenic:1

Dr Mariam's Lab, University of the Punjab

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: case-control

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Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.074

BayesDel_noAF

Benign

-0.34

CADD

Benign

DANN

Benign

0.80

DEOGEN2

Benign

0.19

Eigen

Benign

-0.73

Eigen_PC

Benign

-0.73

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.90

M_CAP

Uncertain

0.095

MetaRNN

Benign

0.33

MetaSVM

Benign

-0.66

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.3

REVEL

Benign

0.22

Sift

Benign

0.24

Sift4G

Benign

0.47

Polyphen

0.12

Vest4

0.23

MutPred

0.55

Loss of sheet (P = 0.1158);

MVP

0.64

MPC

0.68

ClinPred

0.33

GERP RS

1.1

Varity_R

0.051

gMVP

0.44

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over