Variant 4-40348938-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_017581.4(CHRNA9):c.422G>A(p.Gly141Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00115 in 1,614,140 control chromosomes in the GnomAD database, including 4 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00093 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0012 ( 4 hom. )

Consequence

CHRNA9
NM_017581.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 10.0

Variant links:

Genes affected

CHRNA9 (HGNC:14079): (cholinergic receptor nicotinic alpha 9 subunit) This gene is a member of the ligand-gated ionic channel family and nicotinic acetylcholine receptor gene superfamily. It encodes a plasma membrane protein that forms homo- or hetero-oligomeric divalent cation channels. This protein is involved in cochlea hair cell development and is also expressed in the outer hair cells (OHCs) of the adult cochlea. [provided by RefSeq, Feb 2012]

CHRNA9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHRNA9	NM_017581.4 linkuse as main transcript	c.422G>A	p.Gly141Glu	missense_variant	4/5	ENST00000310169.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHRNA9	ENST00000310169.3 linkuse as main transcript	c.422G>A	p.Gly141Glu	missense_variant	4/5	1	NM_017581.4	P1

Frequencies

GnomAD3 genomes

AF:

0.000927

AC:

141

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00173

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000812

AC:

204

AN:

251222

Hom.:

AF XY:

0.000862

AC XY:

117

AN XY:

135782

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.000496

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00173

Gnomad FIN exome

AF:

0.000462

Gnomad NFE exome

AF:

0.00115

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00117

AC:

1717

AN:

1461854

Hom.:

Cov.:

AF XY:

0.00123

AC XY:

891

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.000574

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00145

Gnomad4 FIN exome

AF:

0.000393

Gnomad4 NFE exome

AF:

0.00135

Gnomad4 OTH exome

AF:

0.000679

GnomAD4 genome

AF:

0.000932

AC:

142

AN:

152286

Hom.:

Cov.:

AF XY:

0.000846

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.000192

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.00175

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.00120

Hom.:

Bravo

AF:

0.000774

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.00285

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00174

AC:

ExAC

AF:

0.000758

AC:

EpiCase

AF:

0.00158

EpiControl

AF:

0.000948

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 09, 2022

The c.422G>A (p.G141E) alteration is located in exon 4 (coding exon 4) of the CHRNA9 gene. This alteration results from a G to A substitution at nucleotide position 422, causing the glycine (G) at amino acid position 141 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Pathogenic

0.59

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.87

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.99

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.97

M_CAP

Uncertain

0.27

MetaRNN

Uncertain

0.74

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.4

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-7.7

REVEL

Pathogenic

0.91

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.99

MVP

1.0

MPC

0.45

ClinPred

0.30

GERP RS

5.0

Varity_R

0.99

gMVP

0.94

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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