rs375938350

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004393.6(DAG1):c.185C>T(p.Pro62Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000923 in 1,614,184 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 Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000095 ( 0 hom. )

Consequence

DAG1
NM_004393.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5O:1

Conservation

PhyloP100: 3.17

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 Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1870378).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DAG1	NM_004393.6 linkuse as main transcript	c.185C>T	p.Pro62Leu	missense_variant	2/3	ENST00000308775.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DAG1	ENST00000308775.7 linkuse as main transcript	c.185C>T	p.Pro62Leu	missense_variant	2/3	1	NM_004393.6	P1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000111

AC:

AN:

251346

Hom.:

AF XY:

0.000132

AC XY:

AN XY:

135854

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000951

AC:

139

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000935

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.0000953

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152298

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74470

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000179

Hom.:

Bravo

AF:

0.0000453

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Sep 05, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Mar 01, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 21, 2018	- -

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

Uncertain:1Other:1

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 13, 2023	This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 62 of the DAG1 protein (p.Pro62Leu). This variant is present in population databases (rs375938350, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with DAG1-related conditions. ClinVar contains an entry for this variant (Variation ID: 282776). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt DAG1 protein function. 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 provided, no classification provided	phenotyping only	GenomeConnect - Invitae Patient Insights Network	-	Variant interpreted as Uncertain significance and reported on 11-27-2017 by Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 09, 2022

The c.185C>T (p.P62L) alteration is located in exon 2 (coding exon 1) of the DAG1 gene. This alteration results from a C to T substitution at nucleotide position 185, causing the proline (P) at amino acid position 62 to be replaced by a leucine (L). 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

Benign

0.13

BayesDel_addAF

Benign

-0.0085

BayesDel_noAF

Uncertain

0.020

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.45

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

Eigen

Benign

0.0065

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.92

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

M_CAP

Pathogenic

0.29

MetaRNN

Benign

0.19

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

MetaSVM

Pathogenic

0.81

MutationAssessor

Benign

1.8

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

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.5

N;D;N;N;N;N;N;D;D;D;D

REVEL

Uncertain

0.48

Sift

Uncertain

0.0070

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

Sift4G

Uncertain

0.0070

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

Polyphen

0.42

B;.;B;B;B;B;B;.;.;.;.

Vest4

0.39

MVP

0.81

MPC

0.35

ClinPred

0.053

GERP RS

4.6

Varity_R

0.18

gMVP

0.54

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