Variant rs148502695 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_ModerateBP6_ModerateBP7BS1

The NM_000079.4(CHRNA1):c.780G>A(p.Gly260=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000432 in 1,572,338 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00035 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

CHRNA1
NM_000079.4 splice_region, synonymous

Scores

Splicing: ADA: 0.00005068

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.634

Variant links:

Genes affected

CHRNA1 (HGNC:1955): (cholinergic receptor nicotinic alpha 1 subunit) The muscle acetylcholine receptor consiststs of 5 subunits of 4 different types: 2 alpha subunits and 1 each of the beta, gamma, and delta subunits. This gene encodes an alpha subunit that plays a role in acetlycholine binding/channel gating. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Nov 2012]

CHRNA1 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant 2-174750168-C-T is Benign according to our data. Variant chr2-174750168-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 466183.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.634 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000351 (40/113868) while in subpopulation AFR AF= 0.00127 (39/30592). AF 95% confidence interval is 0.000958. There are 0 homozygotes in gnomad4. There are 20 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CHRNA1	NM_000079.4 linkuse as main transcript	c.780G>A	p.Gly260=	splice_region_variant, synonymous_variant	7/9	ENST00000348749.9
CHRNA1	NM_001039523.3 linkuse as main transcript	c.855G>A	p.Gly285=	splice_region_variant, synonymous_variant	8/10
CHRNA1	XM_017003256.2 linkuse as main transcript	c.876G>A	p.Gly292=	splice_region_variant, synonymous_variant	7/9
CHRNA1	XM_017003257.2 linkuse as main transcript	c.801G>A	p.Gly267=	splice_region_variant, synonymous_variant	6/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHRNA1	ENST00000348749.9 linkuse as main transcript	c.780G>A	p.Gly260=	splice_region_variant, synonymous_variant	7/9	1	NM_000079.4	P1	P02708-2
	ENST00000442996.1 linkuse as main transcript	n.321+20344C>T		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000352

AC:

AN:

113768

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00128

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000104

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000660

AC:

AN:

242588

Hom.:

AF XY:

0.0000304

AC XY:

AN XY:

131704

show subpopulations

Gnomad AFR exome

AF:

0.000947

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:

0.00000905

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000192

AC:

AN:

1458470

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

725660

show subpopulations

Gnomad4 AFR exome

AF:

0.000599

Gnomad4 AMR exome

AF:

0.0000671

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:

9.01e-7

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.000351

AC:

AN:

113868

Hom.:

Cov.:

AF XY:

0.000369

AC XY:

AN XY:

54142

show subpopulations

Gnomad4 AFR

AF:

0.00127

Gnomad4 AMR

AF:

0.000104

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000757

Hom.:

Bravo

AF:

0.000317

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Lethal multiple pterygium syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 18, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

2.7

DANN

Benign

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000051

dbscSNV1_RF

Benign

0.0020

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