17-41771662-C-T

Variant names:

• chr17-41771662-C-T
• rs727503100
• NM_002230.4:c.193G>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002230.4(JUP):​c.193G>A​(p.Val65Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,178 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: JUP NM_002230.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.03

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.078701556).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JUP	NM_002230.4	c.193G>A	p.Val65Met	missense_variant	Exon 2 of 14	ENST00000393931.8	NP_002221.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
JUP	ENST00000393931.8	c.193G>A	p.Val65Met	missense_variant	Exon 2 of 14	1	NM_002230.4	ENSP00000377508.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461178 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726924

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000372 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Naxos disease;C1969081:Arrhythmogenic right ventricular dysplasia 12 Uncertain:1

Nov 29, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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. ClinVar contains an entry for this variant (Variation ID: 660124). This variant has not been reported in the literature in individuals affected with JUP-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 65 of the JUP protein (p.Val65Met). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.077
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T;T;T;.;T;.;T;T;.
Eigen	Benign	-0.75
Eigen_PC	Benign	-0.71
FATHMM_MKL	Benign	0.32	N
LIST_S2	Benign	0.77	.;.;T;T;T;T;T;T;T
M_CAP	Benign	0.0099	T
MetaRNN	Benign	0.079	T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.81	L;L;L;.;.;.;.;.;.
PrimateAI	Uncertain	0.49	T
PROVEAN	Benign	-0.16	N;N;N;N;N;N;N;.;N
REVEL	Benign	0.058
Sift	Benign	0.080	T;T;T;T;T;T;T;.;T
Sift4G	Benign	0.17	T;T;T;.;.;.;.;T;.
Polyphen		0.025	B;B;B;.;.;.;.;.;.
Vest4		0.14
MutPred		0.27		Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);Loss of catalytic residue at V65 (P = 0.0226);
MVP		0.32
MPC		0.11
ClinPred		0.081	T
GERP RS		3.7
Varity_R		0.081
gMVP		0.23

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: rs727503100; hg19: chr17-39927914; COSMIC: COSV60277953; COSMIC: COSV60277953;