rs763558851

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001374736.1(DST):​c.2575A>G​(p.Ile859Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000242 in 1,613,412 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I859M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

DST
NM_001374736.1 missense

Scores

4
14

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.23

Publications

1 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.116904706).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
DSTNM_001374736.1 linkc.2575A>G p.Ile859Val missense_variant Exon 19 of 104 ENST00000680361.1 NP_001361665.1
DSTNM_001723.7 linkc.964A>G p.Ile322Val missense_variant Exon 5 of 24 ENST00000370765.11 NP_001714.1 Q03001-3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
DSTENST00000680361.1 linkc.2575A>G p.Ile859Val missense_variant Exon 19 of 104 NM_001374736.1 ENSP00000505098.1 A0A7P0T890
DSTENST00000370765.11 linkc.964A>G p.Ile322Val missense_variant Exon 5 of 24 1 NM_001723.7 ENSP00000359801.6 Q03001-3

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152186
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000283
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000478
AC:
12
AN:
250960
AF XY:
0.0000516
show subpopulations
Gnomad AFR exome
AF:
0.000249
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000277
Gnomad NFE exome
AF:
0.0000176
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000212
AC:
31
AN:
1461226
Hom.:
0
Cov.:
33
AF XY:
0.0000234
AC XY:
17
AN XY:
726960
show subpopulations
African (AFR)
AF:
0.0000896
AC:
3
AN:
33468
American (AMR)
AF:
0.00
AC:
0
AN:
44714
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26130
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39676
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86228
European-Finnish (FIN)
AF:
0.000206
AC:
11
AN:
53404
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5656
European-Non Finnish (NFE)
AF:
0.0000144
AC:
16
AN:
1111588
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60362
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.473
Heterozygous variant carriers
0
2
4
6
8
10
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000526
AC:
8
AN:
152186
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74348
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41446
American (AMR)
AF:
0.0000655
AC:
1
AN:
15268
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5198
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.000283
AC:
3
AN:
10608
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68046
Other (OTH)
AF:
0.000478
AC:
1
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.488
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000868
Hom.:
0
Bravo
AF:
0.0000416
ExAC
AF:
0.0000330
AC:
4

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hereditary sensory and autonomic neuropathy type 6;C3809470:Epidermolysis bullosa simplex 3, localized or generalized intermediate, with BP230 deficiency Uncertain:1
Jul 26, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 322 of the DST protein (p.Ile322Val). This variant is present in population databases (rs763558851, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with DST-related conditions. ClinVar contains an entry for this variant (Variation ID: 541465). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.071
BayesDel_addAF
Benign
-0.16
T
BayesDel_noAF
Benign
-0.17
CADD
Benign
22
DANN
Uncertain
0.98
DEOGEN2
Benign
0.0083
.;.;.;.;T;.;T;.;T
Eigen
Benign
-0.21
Eigen_PC
Benign
-0.013
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Benign
0.80
T;T;T;T;T;T;T;T;T
M_CAP
Benign
0.011
T
MetaRNN
Benign
0.12
T;T;T;T;T;T;T;T;T
MetaSVM
Uncertain
-0.13
T
MutationAssessor
Benign
1.0
.;.;.;L;.;.;.;.;.
PhyloP100
4.2
PrimateAI
Uncertain
0.49
T
PROVEAN
Benign
-0.30
N;N;.;N;N;N;N;N;N
REVEL
Benign
0.25
Sift
Benign
1.0
T;T;.;T;T;T;T;T;T
Sift4G
Benign
0.25
.;.;.;.;.;T;T;T;T
Polyphen
0.0010
B;.;.;.;.;B;.;B;B
Vest4
0.26
MVP
0.65
MPC
0.51
ClinPred
0.060
T
GERP RS
4.3
gMVP
0.32
Mutation Taster
=88/12
polymorphism

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

Other links and lift over

dbSNP: rs763558851; hg19: chr6-56504771; COSMIC: COSV55049407; COSMIC: COSV55049407; API