18-34710675-AGTGTGTGTGTGT-AGTGTGTGTGTGTGTGTGTGT

Variant names:

• chr18-34710675-A-AGTGTGTGT
• rs113472325
• NM_001386795.1:c.-2+249_-2+256dupGTGTGTGT

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001386795.1(DTNA):​c.-2+249_-2+256dupGTGTGTGT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000858 in 147,944 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.00086 (0 hom., cov: 26)
• Consequence: DTNA NM_001386795.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.161
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• left ventricular noncompaction 1

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• Meniere disease

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• congenital heart disease

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• dilated cardiomyopathy

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

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

• BS2: High AC in GnomAd4 at 127 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001386795.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DTNA	NM_001386795.1	MANE Select	c.-2+249_-2+256dupGTGTGTGT		intron	N/A	NP_001373724.1	A0A7P0TBH9
	DTNA	NM_001386788.1		c.-2+249_-2+256dupGTGTGTGT		intron	N/A	NP_001373717.1	Q9Y4J8-17
	DTNA	NM_001198938.2		c.-2+31102_-2+31109dupGTGTGTGT		intron	N/A	NP_001185867.1	Q9Y4J8-15

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DTNA	ENST00000444659.6	TSL:5 MANE Select	c.-2+230_-2+231insGTGTGTGT		intron	N/A	ENSP00000405819.2	Q9Y4J8-17
	DTNA	ENST00000598334.5	TSL:1	c.-2+31083_-2+31084insGTGTGTGT		intron	N/A	ENSP00000470152.1	Q9Y4J8-15
	DTNA	ENST00000399121.9	TSL:1	c.-2+31083_-2+31084insGTGTGTGT		intron	N/A	ENSP00000382072.5	Q9Y4J8-14

Frequencies

GnomAD3 genomes AF: 0.000852 AC: 126 AN: 147860 Hom.: 0 Cov.: 26

Gnomad AFR AF: 0.00281

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000409

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000648

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000451

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.000858 AC: 127 AN: 147944 Hom.: 0 Cov.: 26 AF XY: 0.000846 AC XY: 61 AN XY: 72112

African (AFR) AF: 0.00283 AC: 115 AN: 40678

American (AMR) AF: 0.000408 AC: 6 AN: 14702

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3412

East Asian (EAS) AF: 0.00 AC: 0 AN: 5040

South Asian (SAS) AF: 0.000650 AC: 3 AN: 4612

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9800

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 288

European-Non Finnish (NFE) AF: 0.0000451 AC: 3 AN: 66476

Other (OTH) AF: 0.00 AC: 0 AN: 2034

Alfa AF: 0.00 Hom.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.16

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs113472325; hg19: chr18-32290639;