rs117571555

Positions:

• chr18-34794098-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Moderate BP6_Very_Strong BS2

The NM_001386795.1(DTNA):​c.210G>A​(p.Leu70Leu) variant causes a synonymous change. The variant allele was found at a frequency of 0.00742 in 1,614,098 control chromosomes in the GnomAD database, including 61 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0044 (2 hom., cov: 32)
  • Exomes 𝑓: 0.0077 (59 hom.)
• Consequence: DTNA NM_001386795.1 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10
• Conservation: PhyloP100: 6.88

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]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.37).
• BP6: Variant 18-34794098-G-A is Benign according to our data. Variant chr18-34794098-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 36029.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr18-34794098-G-A is described in Lovd as [Likely_benign]. Variant chr18-34794098-G-A is described in Lovd as [Benign].
• BS2: High AC in GnomAd4 at 666 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DTNA	NM_001386795.1	c.210G>A	p.Leu70Leu	synonymous_variant	4/23	ENST00000444659.6	NP_001373724.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DTNA	ENST00000444659.6	c.210G>A	p.Leu70Leu	synonymous_variant	4/23	5	NM_001386795.1	ENSP00000405819.2

Frequencies

GnomAD3 genomes AF: 0.00438 AC: 667 AN: 152160 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.00181

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00137

Gnomad ASJ AF: 0.000289

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000828

Gnomad FIN AF: 0.000660

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00808

Gnomad OTH AF: 0.00430

GnomAD3 exomes AF: 0.00447 AC: 1124 AN: 251194 Hom.: 10 AF XY: 0.00478 AC XY: 649 AN XY: 135746

Gnomad AFR exome AF: 0.00148

Gnomad AMR exome AF: 0.00125

Gnomad ASJ exome AF: 0.0000993

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00150

Gnomad FIN exome AF: 0.000971

Gnomad NFE exome AF: 0.00857

Gnomad OTH exome AF: 0.00261

GnomAD4 exome AF: 0.00773 AC: 11304 AN: 1461820 Hom.: 59 Cov.: 32 AF XY: 0.00742 AC XY: 5396 AN XY: 727198

Gnomad4 AFR exome AF: 0.00143

Gnomad4 AMR exome AF: 0.00139

Gnomad4 ASJ exome AF: 0.000383

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00160

Gnomad4 FIN exome AF: 0.00103

Gnomad4 NFE exome AF: 0.00961

Gnomad4 OTH exome AF: 0.00485

GnomAD4 genome AF: 0.00437 AC: 666 AN: 152278 Hom.: 2 Cov.: 32 AF XY: 0.00412 AC XY: 307 AN XY: 74452

Gnomad4 AFR AF: 0.00180

Gnomad4 AMR AF: 0.00137

Gnomad4 ASJ AF: 0.000289

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000829

Gnomad4 FIN AF: 0.000660

Gnomad4 NFE AF: 0.00807

Gnomad4 OTH AF: 0.00426

Alfa AF: 0.00683 Hom.: 1

Bravo AF: 0.00437

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Left ventricular noncompaction 1 Benign:4

Likely benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 26, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	Oct 10, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 10, 2014	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. -
Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Feb 02, 2012	Leu70Leu in exon 5 of DTNA: This variant is classified as benign based on its hi gh frequency in the general population (dbSNP rs117571555; NHLBI Exome Sequencin g Project, http://evs.gs.washington.edu/EVS). -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 14, 2016	- -

not provided Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2023	DTNA: BP4, BS2 -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Cardiomyopathy Benign:1

Benign, no assertion criteria provided

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jun 04, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.37
CADD	Benign	7.8
DANN	Benign	0.80

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: rs117571555; hg19: chr18-32374062;