Genetic Variant NM_002230.4:c.1932C>A (chr17-41757529-G-T) – ACMG Classification: Pathogenic (10 pts)

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1PM2

The NM_002230.4(JUP):c.1932C>A(p.Tyr644*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Y644Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

JUP
NM_002230.4 stop_gained

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.390

Publications

0 publications found

Variant links:

Genes affected

JUP (HGNC:6207): (junction plakoglobin) This gene encodes a major cytoplasmic protein which is the only known constituent common to submembranous plaques of both desmosomes and intermediate junctions. This protein forms distinct complexes with cadherins and desmosomal cadherins and is a member of the catenin family since it contains a distinct repeating amino acid motif called the armadillo repeat. Mutation in this gene has been associated with Naxos disease. Alternative splicing occurs in this gene; however, not all transcripts have been fully described. [provided by RefSeq, Jul 2008]

JUP Gene-Disease associations (from GenCC):

arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
arrhythmogenic right ventricular dysplasia 12
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
inherited epidermolysis bullosa
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
Naxos disease
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, PanelApp Australia
lethal acantholytic epidermolysis bullosa
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

JUP links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002230.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
JUP	NM_002230.4	MANE Select	c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 14	NP_002221.1
JUP	NM_001352773.2		c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 14	NP_001339702.1
JUP	NM_001352774.2		c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 15	NP_001339703.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
JUP	ENST00000393931.8	TSL:1 MANE Select	c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 14	ENSP00000377508.3
JUP	ENST00000310706.9	TSL:1	c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 15	ENSP00000311113.5
JUP	ENST00000393930.5	TSL:5	c.1932C>A	p.Tyr644*	stop_gained	Exon 12 of 15	ENSP00000377507.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112004

Other (OTH)

AF:

0.0000166

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.54

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Benign

-0.12

Eigen_PC

Benign

-0.41

FATHMM_MKL

Uncertain

0.81

PhyloP100

-0.39

Vest4

0.96

GERP RS

-3.7

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over