6-56619634-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_001723.7(DST):c.4400G>A(p.Arg1467His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000551 in 1,613,746 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/16 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1467C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0027 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 2 hom. )

Consequence

DST
NM_001723.7 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 1.40

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

hereditary sensory and autonomic neuropathy type 6
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, G2P, ClinGen, Labcorp Genetics (formerly Invitae)
epidermolysis bullosa simplex 3, localized or generalized intermediate, with BP230 deficiency
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet

DST links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0035323203).

BP6

Variant 6-56619634-C-T is Benign according to our data. Variant chr6-56619634-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 357574.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00269 (410/152232) while in subpopulation AFR AF = 0.00932 (387/41542). AF 95% confidence interval is 0.00855. There are 0 homozygotes in GnomAd4. There are 203 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DST	NM_001723.7 link	c.4400G>A	p.Arg1467His	missense_variant	Exon 23 of 24	ENST00000370765.11	NP_001714.1
DST	NM_001374736.1 link	c.4929+4896G>A		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.4400G>A	p.Arg1467His	missense_variant	Exon 23 of 24	1	NM_001723.7	ENSP00000359801.6
DST	ENST00000680361.1 link	c.4929+4896G>A		intron_variant	Intron 36 of 103		NM_001374736.1	ENSP00000505098.1

Frequencies

GnomAD3 genomes

AF:

0.00268

AC:

408

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00930

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

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:

0.000103

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.000829

AC:

208

AN:

250964

AF XY:

0.000634

show subpopulations

Gnomad AFR exome

AF:

0.0106

Gnomad AMR exome

AF:

0.000261

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000793

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000328

AC:

479

AN:

1461514

Hom.:

Cov.:

AF XY:

0.000296

AC XY:

215

AN XY:

727052

show subpopulations

African (AFR)

AF:

0.0105

AC:

351

AN:

33438

American (AMR)

AF:

0.000380

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39698

South Asian (SAS)

AF:

0.000336

AC:

AN:

86204

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53228

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000450

AC:

AN:

1111960

Other (OTH)

AF:

0.000480

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

114

142

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00269

AC:

410

AN:

152232

Hom.:

Cov.:

AF XY:

0.00273

AC XY:

203

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.00932

AC:

387

AN:

41542

American (AMR)

AF:

0.000785

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68020

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00120

Hom.:

Bravo

AF:

0.00306

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00999

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000931

AC:

113

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hereditary sensory and autonomic neuropathy type 6

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

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

Benign:1

Dec 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

DST-related disorder

Benign:1

May 23, 2024

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as 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

AlphaMissense

Benign

0.051

BayesDel_addAF

Benign

-0.70

BayesDel_noAF

Benign

-0.77

CADD

Benign

(source)

DANN

Benign

0.97

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.17

MetaRNN

Benign

0.0035

MetaSVM

Benign

-1.0

PhyloP100

1.4

PROVEAN

Benign

0.060

REVEL

Benign

0.067

Sift

Benign

0.40

Sift4G

Benign

0.46

Polyphen

0.0

Vest4

0.056

MVP

0.14

ClinPred

0.0022

GERP RS

5.2

Mutation Taster

=93/7

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over