6-7584147-A-T

Position:

• chr6-7584147-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_004415.4(DSP):​c.6885A>T​(p.Gln2295His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DSP NM_004415.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.730

Genes affected

DSP (HGNC:3052): (desmoplakin) This gene encodes a protein that anchors intermediate filaments to desmosomal plaques and forms an obligate component of functional desmosomes. Mutations in this gene are the cause of several cardiomyopathies and keratodermas, including skin fragility-woolly hair syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.913

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DSP	NM_004415.4	c.6885A>T	p.Gln2295His	missense_variant	24/24	ENST00000379802.8	NP_004406.2
DSP	NM_001319034.2	c.5556A>T	p.Gln1852His	missense_variant	24/24		NP_001305963.1
DSP	NM_001008844.3	c.5088A>T	p.Gln1696His	missense_variant	24/24		NP_001008844.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DSP	ENST00000379802.8	c.6885A>T	p.Gln2295His	missense_variant	24/24	1	NM_004415.4	ENSP00000369129.3
DSP	ENST00000418664.2	c.5088A>T	p.Gln1696His	missense_variant	24/24	1		ENSP00000396591.2
DSP	ENST00000710359.1	c.5556A>T	p.Gln1852His	missense_variant	24/24			ENSP00000518230.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Jul 18, 2012

The Gln2295His variant in DSP has not been reported in the literature nor previo usly identified by our laboratory. Computational analyses (biochemical amino ac id properties, conservation, PolyPhen2, and SIFT) suggest that the Gln2295His va riant may impact the protein, though this information is not predictive enough t o determine pathogenicity. Additional information is needed to fully assess the clinical significance of the Gln2295His variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
CADD	Benign	20
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T;.
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Pathogenic	0.98	D;D
M_CAP	Uncertain	0.26	D
MetaRNN	Pathogenic	0.91	D;D
MetaSVM	Uncertain	0.14	D
MutationAssessor	Pathogenic	3.6	H;.
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-4.6	D;D
REVEL	Pathogenic	0.85
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.80
MutPred		0.79		Loss of catalytic residue at Q2295 (P = 0.1645);.;
MVP		0.95
MPC		0.79
ClinPred		1.0	D
GERP RS		-0.26
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.9
Varity_R		0.90
gMVP		0.98

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

Other links and lift over

dbSNP: rs397516954; hg19: chr6-7584380;