3-49487663-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_004393.6(DAG1):c.-117+17230A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.307 in 143,028 control chromosomes in the GnomAD database, including 6,986 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.31 (6986 hom., cov: 27)
• Consequence: DAG1 NM_004393.6 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.362

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]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.48).
• BP6: Variant 3-49487663-A-G is Benign according to our data. Variant chr3-49487663-A-G is described in ClinVar as [Benign]. Clinvar id is 1293349.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.313 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DAG1	NM_004393.6	c.-117+17230A>G		intron_variant		ENST00000308775.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DAG1	ENST00000308775.7	c.-117+17230A>G		intron_variant		1	NM_004393.6	P1

Frequencies

GnomAD3 genomes AF: 0.307 AC: 43943 AN: 142972 Hom.: 6978 Cov.: 27

Gnomad AFR AF: 0.307

Gnomad AMI AF: 0.201

Gnomad AMR AF: 0.224

Gnomad ASJ AF: 0.471

Gnomad EAS AF: 0.0596

Gnomad SAS AF: 0.238

Gnomad FIN AF: 0.487

Gnomad MID AF: 0.330

Gnomad NFE AF: 0.317

Gnomad OTH AF: 0.309

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.307 AC: 43973 AN: 143028 Hom.: 6986 Cov.: 27 AF XY: 0.309 AC XY: 21425 AN XY: 69394

Gnomad4 AFR AF: 0.307

Gnomad4 AMR AF: 0.224

Gnomad4 ASJ AF: 0.471

Gnomad4 EAS AF: 0.0600

Gnomad4 SAS AF: 0.239

Gnomad4 FIN AF: 0.487

Gnomad4 NFE AF: 0.317

Gnomad4 OTH AF: 0.307

Alfa AF: 0.288 Hom.: 821

Bravo AF: 0.277

Asia WGS AF: 0.148 AC: 522 AN: 3476

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 01, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.48
Cadd	Benign	7.5
Dann	Benign	0.82

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

Other links and lift over

dbSNP: rs9818590; hg19: chr3-49525096;