NM_001723.7:c.6868A>G

Variant names:

• chr6-56616599-T-C
• rs112473525
• NM_001723.7:c.6868A>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BP6

The NM_001723.7(DST):​c.6868A>G​(p.Arg2290Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000506 in 1,614,038 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. R2290R) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00043 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00051 (0 hom.)
• Consequence: DST NM_001723.7 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:2
• Conservation: PhyloP100: 3.48
• Publications: 4 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0148558915).
• BP6: Variant 6-56616599-T-C is Benign according to our data. Variant chr6-56616599-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 357553.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001723.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DST	NM_001723.7	MANE Plus Clinical	c.6868A>G	p.Arg2290Gly	missense	Exon 24 of 24	NP_001714.1
	DST	NM_001374736.1	MANE Select	c.4930-2115A>G		intron	N/A	NP_001361665.1
	DST	NM_001374734.1		c.4957-2115A>G		intron	N/A	NP_001361663.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DST	ENST00000370765.11	TSL:1 MANE Plus Clinical	c.6868A>G	p.Arg2290Gly	missense	Exon 24 of 24	ENSP00000359801.6
	DST	ENST00000680361.1	MANE Select	c.4930-2115A>G		intron	N/A	ENSP00000505098.1
	DST	ENST00000244364.10	TSL:1	c.3319-2115A>G		intron	N/A	ENSP00000244364.6

Frequencies

GnomAD3 genomes AF: 0.000434 AC: 66 AN: 152174 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00292

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000514

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000605 AC: 152 AN: 251364 AF XY: 0.000508

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00226

Gnomad NFE exome AF: 0.000897

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000514 AC: 751 AN: 1461864 Hom.: 0 Cov.: 34 AF XY: 0.000480 AC XY: 349 AN XY: 727234

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00313 AC: 167 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.000495 AC: 550 AN: 1112000

Other (OTH) AF: 0.000563 AC: 34 AN: 60396

GnomAD4 genome AF: 0.000434 AC: 66 AN: 152174 Hom.: 0 Cov.: 32 AF XY: 0.000390 AC XY: 29 AN XY: 74348

African (AFR) AF: 0.00 AC: 0 AN: 41424

American (AMR) AF: 0.00 AC: 0 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00292 AC: 31 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000514 AC: 35 AN: 68038

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.000465 Hom.: 0

Bravo AF: 0.000215

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000581 AC: 5

ExAC AF: 0.000799 AC: 97

EpiCase AF: 0.000382

EpiControl AF: 0.000296

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	not provided (2)
-	1	-	Hereditary sensory and autonomic neuropathy type 6 (1)
-	-	1	Hereditary sensory and autonomic neuropathy type 6;C3809470:Epidermolysis bullosa simplex 3, localized or generalized intermediate, with BP230 deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Benign	-0.37	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	15
DANN	Uncertain	0.99
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.17
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.64	T
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.015	T
MetaSVM	Benign	-0.89	T
PhyloP100		3.5
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.14
Sift	Uncertain	0.021	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.76	P
Vest4		0.25
MVP		0.53
ClinPred		0.22	T
GERP RS		0.27
Mutation Taster		=94/6	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

Other links and lift over

dbSNP: rs112473525; hg19: chr6-56481397; COSMIC: COSV99761045; COSMIC: COSV99761045;