17-41758750-G-A

Position:

chr17-41758750-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_002230.4(JUP):c.1618C>T(p.Arg540Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,454,642 control chromosomes in the GnomAD database, with no homozygous occurrence. 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)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

JUP
NM_002230.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.71

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 links:

JUP (HGNC:):

JUP links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.856

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
JUP	NM_002230.4 linkuse as main transcript	c.1618C>T	p.Arg540Cys	missense_variant	9/14	ENST00000393931.8	NP_002221.1	P14923A0A0S2Z487

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
JUP	ENST00000393931.8 linkuse as main transcript	c.1618C>T	p.Arg540Cys	missense_variant	9/14	1	NM_002230.4	ENSP00000377508.3	P14923
JUP	ENST00000310706.9 linkuse as main transcript	c.1618C>T	p.Arg540Cys	missense_variant	9/15	1		ENSP00000311113.5	P14923
JUP	ENST00000393930.5 linkuse as main transcript	c.1618C>T	p.Arg540Cys	missense_variant	9/15	5		ENSP00000377507.1	P14923
JUP	ENST00000585793.1 linkuse as main transcript	n.216C>T		non_coding_transcript_exon_variant	2/3	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000170

AC:

AN:

235392

Hom.:

AF XY:

0.0000313

AC XY:

AN XY:

127712

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000304

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000343

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000189

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1454642

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

723120

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.0000230

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000352

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000721

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000896

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Nov 27, 2019

Reported in conjunction with an additional cardiogenetic variant in an individual with HCM (Inagaki et al., 2018); Not observed at a significant frequency in large population cohorts (Lek et al., 2016); Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 571627; Landrum et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 30206291) -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2023

The p.R540C variant (also known as c.1618C>T), located in coding exon 8 of the JUP gene, results from a C to T substitution at nucleotide position 1618. The arginine at codon 540 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration has been reported in a hypertrophic cardiomyopathy (HCM) cohort and a stillbirth cohort; however, clinical details were limited and additional alterations in other cardiac-related genes were identified (Inagaki N et al. J Hum Genet, 2018 Dec;63:1273-1276; Sahlin E et al. PLoS One, 2019 Jan;14:e0210017). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Naxos disease;C1969081:Arrhythmogenic right ventricular dysplasia 12

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 14, 2023

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 540 of the JUP protein (p.Arg540Cys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 30206291). ClinVar contains an entry for this variant (Variation ID: 571627). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests 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

Pathogenic

0.70

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.050

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.87

D;D;D

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

.;.;D

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.86

D;D;D

MetaSVM

Uncertain

-0.12

MutationAssessor

Uncertain

2.4

M;M;M

PrimateAI

Pathogenic

0.85

PROVEAN

Pathogenic

-5.6

D;D;D

REVEL

Uncertain

0.37

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.83

MutPred

0.51

Loss of MoRF binding (P = 0.0092);Loss of MoRF binding (P = 0.0092);Loss of MoRF binding (P = 0.0092);

MVP

0.87

MPC

1.6

ClinPred

0.99

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.52

gMVP

0.48

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over