6-56619262-T-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001723.7(DST):c.4772A>C(p.Gln1591Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,613,240 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 10/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00045 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

DST
NM_001723.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 1.44

Variant links:

Genes affected

DST (HGNC:1090): (dystonin) This gene encodes a member of the plakin protein family of adhesion junction plaque proteins. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene, but the full-length nature of some variants has not been defined. It has been reported that some isoforms are expressed in neural and muscle tissue, anchoring neural intermediate filaments to the actin cytoskeleton, and some isoforms are expressed in epithelial tissue, anchoring keratin-containing intermediate filaments to hemidesmosomes. Consistent with the expression, mice defective for this gene show skin blistering and neurodegeneration. [provided by RefSeq, Mar 2010]

DST links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0067356825).

BP6

Variant 6-56619262-T-G is Benign according to our data. Variant chr6-56619262-T-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 474527.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000446 (68/152386) while in subpopulation EAS AF= 0.00578 (30/5190). AF 95% confidence interval is 0.00416. There are 2 homozygotes in gnomad4. There are 32 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DST	NM_001723.7 link	c.4772A>C	p.Gln1591Pro	missense_variant	Exon 23 of 24	ENST00000370765.11	NP_001714.1	Q03001-3
DST	NM_001374736.1 link	c.4930-4778A>C		intron_variant	Intron 36 of 103	ENST00000680361.1	NP_001361665.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DST	ENST00000370765.11 link	c.4772A>C	p.Gln1591Pro	missense_variant	Exon 23 of 24	1	NM_001723.7	ENSP00000359801.6		Q03001-3
DST	ENST00000680361.1 link	c.4930-4778A>C		intron_variant	Intron 36 of 103		NM_001374736.1	ENSP00000505098.1		A0A7P0T890

Frequencies

GnomAD3 genomes

AF:

0.000440

AC:

AN:

152268

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000530

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00577

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000408

AC:

102

AN:

250172

Hom.:

AF XY:

0.000422

AC XY:

AN XY:

135204

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00512

Gnomad SAS exome

AF:

0.0000330

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000121

AC:

177

AN:

1460854

Hom.:

Cov.:

AF XY:

0.000113

AC XY:

AN XY:

726662

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00292

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.000596

GnomAD4 genome

AF:

0.000446

AC:

AN:

152386

Hom.:

Cov.:

AF XY:

0.000429

AC XY:

AN XY:

74522

show subpopulations

Gnomad4 AFR

AF:

0.000529

Gnomad4 AMR

AF:

0.000784

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00578

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000281

Hom.:

Bravo

AF:

0.000374

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000437

AC:

Asia WGS

AF:

0.00318

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jun 10, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported previously in a patient with progressive stiffness, weakness, ataxia, spasticity with hyperreflexia, scissors gait, and mild cerebellar atrophy on MRI who also harbored multiple other variants including compound heterozygous SPG7 variants that looked to be the cause for the symptoms (PMID: 30497413); In silico analysis indicates that this missense variant does not alter protein structure/function; Reported using the transcript encoding the epithelial isoform of the gene.; This variant is associated with the following publications: (PMID: 30497413) -

Hereditary sensory and autonomic neuropathy type 6;C3809470:Epidermolysis bullosa simplex 3, localized or generalized intermediate, with BP230 deficiency

Benign:1

Dec 26, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

DST-related disorder

Benign:1

Nov 19, 2023

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

0.98

Eigen

Benign

-0.55

Eigen_PC

Benign

-0.40

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.65

M_CAP

Benign

0.0020

MetaRNN

Benign

0.0067

MetaSVM

Benign

-1.1

PROVEAN

Benign

-1.8

REVEL

Benign

0.077

Sift

Uncertain

0.0050

Sift4G

Benign

0.20

Polyphen

0.0060

Vest4

0.36

MVP

0.27

ClinPred

0.017

GERP RS

4.2

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