Variant chr15-32030549-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000746.6(CHRNA7):c.-46G>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00438 in 1,442,078 control chromosomes in the GnomAD database, including 239 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.023 ( 139 hom., cov: 31)

Exomes 𝑓: 0.0022 ( 100 hom. )

Consequence

CHRNA7
NM_000746.6 5_prime_UTR

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0270

Variant links:

Genes affected

CHRNA7 (HGNC:1960): (cholinergic receptor nicotinic alpha 7 subunit) The nicotinic acetylcholine receptors (nAChRs) are members of a superfamily of ligand-gated ion channels that mediate fast signal transmission at synapses. The nAChRs are thought to be hetero-pentamers composed of homologous subunits. The proposed structure for each subunit is a conserved N-terminal extracellular domain followed by three conserved transmembrane domains, a variable cytoplasmic loop, a fourth conserved transmembrane domain, and a short C-terminal extracellular region. The protein encoded by this gene forms a homo-oligomeric channel, displays marked permeability to calcium ions and is a major component of brain nicotinic receptors that are blocked by, and highly sensitive to, alpha-bungarotoxin. Once this receptor binds acetylcholine, it undergoes an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane. This gene is located in a region identified as a major susceptibility locus for juvenile myoclonic epilepsy and a chromosomal location involved in the genetic transmission of schizophrenia. An evolutionarily recent partial duplication event in this region results in a hybrid containing sequence from this gene and a novel FAM7A gene. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]

CHRNA7 links:

LOC124903441 (HGNC:):

LOC124903441 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant 15-32030549-G-T is Benign according to our data. Variant chr15-32030549-G-T is described in ClinVar as [Benign]. Clinvar id is 1183237.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0753 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHRNA7	NM_000746.6 linkuse as main transcript	c.-46G>T		5_prime_UTR_variant	1/10	ENST00000306901.9	NP_000737.1	P36544-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHRNA7	ENST00000306901 linkuse as main transcript	c.-46G>T		5_prime_UTR_variant	1/10	1	NM_000746.6	ENSP00000303727.2		P36544-1

Frequencies

GnomAD3 genomes

AF:

0.0225

AC:

3422

AN:

151864

Hom.:

139

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0776

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00917

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00955

Gnomad NFE

AF:

0.000309

Gnomad OTH

AF:

0.0230

GnomAD3 exomes

AF:

0.00223

AC:

131

AN:

58760

Hom.:

AF XY:

0.00186

AC XY:

AN XY:

33854

show subpopulations

Gnomad AFR exome

AF:

0.0835

Gnomad AMR exome

AF:

0.00375

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000331

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000333

Gnomad OTH exome

AF:

0.00413

GnomAD4 exome

AF:

0.00224

AC:

2896

AN:

1290108

Hom.:

100

Cov.:

AF XY:

0.00189

AC XY:

1196

AN XY:

632902

show subpopulations

Gnomad4 AFR exome

AF:

0.0830

Gnomad4 AMR exome

AF:

0.00565

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000150

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000239

Gnomad4 OTH exome

AF:

0.00602

GnomAD4 genome

AF:

0.0225

AC:

3426

AN:

151970

Hom.:

139

Cov.:

AF XY:

0.0211

AC XY:

1571

AN XY:

74282

show subpopulations

Gnomad4 AFR

AF:

0.0775

Gnomad4 AMR

AF:

0.00910

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.0227

Alfa

AF:

0.000429

Hom.:

Bravo

AF:

0.0259

Asia WGS

AF:

0.00551

AC:

AN:

3462

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 14, 2018	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

6.6

DANN

Benign

0.67

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