3-49487663-A-T

Variant names:

• chr3-49487663-A-T
• rs9818590
• NM_004393.6:c.-117+17230A>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_004393.6(DAG1):​c.-117+17230A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 27)
  • Failed GnomAD Quality Control
• Consequence: DAG1 NM_004393.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.362
• Publications: 14 publications found

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 Gene-Disease associations (from GenCC):

• autosomal recessive limb-girdle muscular dystrophy type 2P

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Orphanet
• muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A9

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• muscular dystrophy-dystroglycanopathy, type A

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• isolated asymptomatic elevation of creatine phosphokinase

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.52).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DAG1	NM_004393.6	c.-117+17230A>T		intron_variant	Intron 1 of 2	ENST00000308775.7	NP_004384.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DAG1	ENST00000308775.7	c.-117+17230A>T		intron_variant	Intron 1 of 2	1	NM_004393.6	ENSP00000312435.2

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 143110 Hom.: 0 Cov.: 27

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: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

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

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 143110 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 69398

African (AFR) AF: 0.00 AC: 0 AN: 38418

American (AMR) AF: 0.00 AC: 0 AN: 14198

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3394

East Asian (EAS) AF: 0.00 AC: 0 AN: 4918

South Asian (SAS) AF: 0.00 AC: 0 AN: 4502

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9272

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 65250

Other (OTH) AF: 0.00 AC: 0 AN: 1990

Alfa AF: 0.00 Hom.: 855

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	7.2
DANN	Benign	0.84
PhyloP100		0.36

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

Other links and lift over

dbSNP: rs9818590; hg19: chr3-49525096;