rs142009291

Positions:

chr18-34879665-G-A

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_001386795.1(DTNA):c.2108G>A(p.Arg703Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000675 in 1,614,040 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00028 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

DTNA
NM_001386795.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 5.77

Variant links:

Genes affected

DTNA (HGNC:3057): (dystrobrevin alpha) The protein encoded by this gene belongs to the dystrobrevin subfamily of the dystrophin family. This protein is a component of the dystrophin-associated protein complex (DPC), which consists of dystrophin and several integral and peripheral membrane proteins, including dystroglycans, sarcoglycans, syntrophins and alpha- and beta-dystrobrevin. The DPC localizes to the sarcolemma and its disruption is associated with various forms of muscular dystrophy. Mutations in this gene are associated with left ventricular noncompaction with congenital heart defects. Multiple alternatively spliced transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

DTNA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.11159971).

BP6

Variant 18-34879665-G-A is Benign according to our data. Variant chr18-34879665-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 46422.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=1}.

BS2

High AC in GnomAd4 at 42 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DTNA	NM_001386795.1 linkuse as main transcript	c.2108G>A	p.Arg703Gln	missense_variant	20/23	ENST00000444659.6	NP_001373724.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DTNA	ENST00000444659.6 linkuse as main transcript	c.2108G>A	p.Arg703Gln	missense_variant	20/23	5	NM_001386795.1	ENSP00000405819	P3	Q9Y4J8-17

Frequencies

GnomAD3 genomes

AF:

0.000270

AC:

AN:

152098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000894

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000517

AC:

AN:

251402

Hom.:

AF XY:

0.0000662

AC XY:

AN XY:

135874

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000458

AC:

AN:

1461824

Hom.:

Cov.:

AF XY:

0.0000426

AC XY:

AN XY:

727208

show subpopulations

Gnomad4 AFR exome

AF:

0.000986

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000207

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000276

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74404

show subpopulations

Gnomad4 AFR

AF:

0.000915

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000970

Hom.:

Bravo

AF:

0.000253

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000741

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Biesecker Lab/Clinical Genomics Section, National Institutes of Health

Jun 24, 2013

- -

Left ventricular noncompaction 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 30, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 676 of the DTNA protein (p.Arg676Gln). This variant is present in population databases (rs142009291, gnomAD 0.07%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with DTNA-related conditions. ClinVar contains an entry for this variant (Variation ID: 46422). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 01, 2012

Arg619Gln in exon 19 of DTNA: This variant is not expected to have clinical sign ificance because it has been identified in 3/194 chromosomes from the LWK popula tion (Kenyan) by the 1000 Genomes project (dbSNP rs142009291). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.21

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.31

.;.;.;.;.;T;T;T;.;.;.;T

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

D;D;D;D;.;D;.;D;D;D;D;D

M_CAP

Benign

0.010

MetaRNN

Benign

0.11

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.81

.;.;.;.;.;L;L;.;.;.;.;.

MutationTaster

Benign

0.98

D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.4

N;.;.;.;.;N;N;.;N;.;N;.

REVEL

Benign

0.22

Sift

Uncertain

0.010

D;.;.;.;.;D;D;.;D;.;D;.

Sift4G

Benign

0.16

T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.96

D;.;.;.;D;P;P;.;.;P;.;.

Vest4

0.61

MVP

0.54

MPC

0.67

ClinPred

0.18

GERP RS

5.3

Varity_R

0.16

gMVP

0.53

Splicing

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