NM_004393.6:c.2271C>T

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_004393.6(DAG1):c.2271C>T(p.Ala757Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00172 in 1,614,062 control chromosomes in the GnomAD database, including 34 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0074 ( 16 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 18 hom. )

Consequence

DAG1
NM_004393.6 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -3.83

Variant links:

Genes affected

DAG1 (HGNC:2666): (dystroglycan 1) This gene encodes dystroglycan, a central component of dystrophin-glycoprotein complex that links the extracellular matrix and the cytoskeleton in the skeletal muscle. The encoded preproprotein undergoes O- and N-glycosylation, and proteolytic processing to generate alpha and beta subunits. Certain mutations in this gene are known to cause distinct forms of muscular dystrophy. Alternative splicing results in multiple transcript variants, all encoding the same protein. [provided by RefSeq, Nov 2015]

DAG1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

BP6

Variant 3-49532782-C-T is Benign according to our data. Variant chr3-49532782-C-T is described in ClinVar as [Benign]. Clinvar id is 383114.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-49532782-C-T is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=-3.83 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00741 (1129/152320) while in subpopulation AFR AF= 0.0247 (1025/41566). AF 95% confidence interval is 0.0234. There are 16 homozygotes in gnomad4. There are 543 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 16 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DAG1	NM_004393.6 link	c.2271C>T	p.Ala757Ala	synonymous_variant	Exon 3 of 3	ENST00000308775.7	NP_004384.5	Q14118A0A024R2W4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DAG1	ENST00000308775.7 link	c.2271C>T	p.Ala757Ala	synonymous_variant	Exon 3 of 3	1	NM_004393.6	ENSP00000312435.2		Q14118

Frequencies

GnomAD3 genomes

AF:

0.00739

AC:

1125

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0246

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00373

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.00813

GnomAD3 exomes

AF:

0.00229

AC:

574

AN:

250346

Hom.:

AF XY:

0.00184

AC XY:

249

AN XY:

135476

show subpopulations

Gnomad AFR exome

AF:

0.0269

Gnomad AMR exome

AF:

0.00211

Gnomad ASJ exome

AF:

0.00159

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000301

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.00113

AC:

1648

AN:

1461742

Hom.:

Cov.:

AF XY:

0.00106

AC XY:

772

AN XY:

727170

show subpopulations

Gnomad4 AFR exome

AF:

0.0279

Gnomad4 AMR exome

AF:

0.00239

Gnomad4 ASJ exome

AF:

0.00184

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.000243

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000323

Gnomad4 OTH exome

AF:

0.00245

GnomAD4 genome

AF:

0.00741

AC:

1129

AN:

152320

Hom.:

Cov.:

AF XY:

0.00729

AC XY:

543

AN XY:

74490

show subpopulations

Gnomad4 AFR

AF:

0.0247

Gnomad4 AMR

AF:

0.00372

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.00805

Alfa

AF:

0.00355

Hom.:

Bravo

AF:

0.00804

Asia WGS

AF:

0.00231

AC:

AN:

3478

EpiCase

AF:

0.000763

EpiControl

AF:

0.000474

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Jul 28, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A9;C4511963:Autosomal recessive limb-girdle muscular dystrophy type 2P

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.32

DANN

Benign

0.55

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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