rs41267671

Positions:

• chr6-56640044-C-A
• chr6-56640044-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001374736.1(DST):​c.2504G>T​(p.Arg835Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,728 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: DST NM_001374736.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.468

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), DST. . Gene score misZ 2.2208 (greater than the threshold 3.09). Trascript score misZ 3.9149 (greater than threshold 3.09). GenCC has associacion of gene with hereditary sensory and autonomic neuropathy type 6, epidermolysis bullosa simplex 3, localized or generalized intermediate, with BP230 deficiency.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DST	NM_001374736.1	c.2504G>T	p.Arg835Leu	missense_variant	19/104	ENST00000680361.1	NP_001361665.1
DST	NM_001723.7	c.893G>T	p.Arg298Leu	missense_variant	5/24	ENST00000370765.11	NP_001714.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DST	ENST00000680361.1	c.2504G>T	p.Arg835Leu	missense_variant	19/104		NM_001374736.1	ENSP00000505098.1
DST	ENST00000370765.11	c.893G>T	p.Arg298Leu	missense_variant	5/24	1	NM_001723.7	ENSP00000359801.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461728 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 727168

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Benign	13
DANN	Uncertain	0.99
DEOGEN2	Benign	0.10	.;.;.;.;T;.;T;.;T
Eigen	Benign	-0.63
Eigen_PC	Benign	-0.72
FATHMM_MKL	Benign	0.32	N
LIST_S2	Benign	0.83	T;T;T;T;T;T;T;T;T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.54	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.16	D
MutationAssessor	Uncertain	2.4	.;.;.;M;.;.;.;.;.
PrimateAI	Benign	0.22	T
PROVEAN	Pathogenic	-5.5	D;D;.;D;D;D;D;D;D
REVEL	Uncertain	0.46
Sift	Uncertain	0.0090	D;D;.;D;D;D;T;T;T
Sift4G	Uncertain	0.0030	.;.;.;.;.;D;T;D;T
Polyphen		0.83	P;.;.;.;.;P;.;P;B
Vest4		0.55
MVP		0.73
MPC		0.29
ClinPred		0.96	D
GERP RS		-1.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.57

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs41267671; hg19: chr6-56504842;