17-41757696-A-G

Position:

• chr17-41757696-A-G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP6 BS1

The ENST00000393931.8(JUP):​c.1862T>C​(p.Ile621Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000645 in 1,613,348 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. I621I) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000085 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000062 (0 hom.)
• Consequence: JUP ENST00000393931.8 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4 B:2
• Conservation: PhyloP100: 9.18

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 Likely_benign. Variant got -5 ACMG points.

• BP6: Variant 17-41757696-A-G is Benign according to our data. Variant chr17-41757696-A-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 191670.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=4, Likely_benign=1}.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000854 (13/152180) while in subpopulation EAS AF= 0.000967 (5/5168). AF 95% confidence interval is 0.000381. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
JUP	NM_002230.4	c.1862T>C	p.Ile621Thr	missense_variant	11/14	ENST00000393931.8	NP_002221.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
JUP	ENST00000393931.8	c.1862T>C	p.Ile621Thr	missense_variant	11/14	1	NM_002230.4	ENSP00000377508	P1
JUP	ENST00000310706.9	c.1862T>C	p.Ile621Thr	missense_variant	11/15	1		ENSP00000311113	P1
JUP	ENST00000393930.5	c.1862T>C	p.Ile621Thr	missense_variant	11/15	5		ENSP00000377507	P1

Frequencies

GnomAD3 genomes AF: 0.0000855 AC: 13 AN: 152062 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000965

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.000189

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000160 AC: 40 AN: 249274 Hom.: 0 AF XY: 0.000141 AC XY: 19 AN XY: 135022

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00120

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.000471

Gnomad NFE exome AF: 0.0000711

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000623 AC: 91 AN: 1461168 Hom.: 0 Cov.: 38 AF XY: 0.0000605 AC XY: 44 AN XY: 726798

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000580

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.000544

Gnomad4 NFE exome AF: 0.0000297

Gnomad4 OTH exome AF: 0.0000663

GnomAD4 genome AF: 0.0000854 AC: 13 AN: 152180 Hom.: 0 Cov.: 32 AF XY: 0.0000806 AC XY: 6 AN XY: 74410

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000967

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.000189

Gnomad4 NFE AF: 0.0000735

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000160 Hom.: 0

Bravo AF: 0.0000642

ExAC AF: 0.000157 AC: 19

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4 Benign:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2019	- -
Uncertain significance, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Apr 18, 2017	The I621T variant of uncertain significance in the JUP gene has not been published as pathogenic or been reported as benign to our knowledge. The I621T variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across species, and in silico analysis predicts this variant is probably damaging to the protein structure/function. However, to our knowledge no studies have been performed to determine the functional effect of the I621T variant. Furthermore, the I621T variant was observed in 8/8,426 alleles from individuals of East Asian ancestry, 5/5,786 alleles from individuals of European (Finnish) ancestry, and 6/64,012 alleles from individuals of European (Non-Finnish) ancestry in the Exome Aggregation Consortium (ExAC) dataset (Lek et al., 2016). -

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

Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Sep 01, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 29, 2024	- -

Cardiovascular phenotype Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 09, 2022

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Uncertain	0.032	T
BayesDel_noAF	Pathogenic	0.23
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.87	D;D;D
Eigen	Uncertain	0.62
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Pathogenic	0.97	.;.;D
M_CAP	Uncertain	0.13	D
MetaRNN	Uncertain	0.74	D;D;D
MetaSVM	Uncertain	-0.26	T
MutationAssessor	Uncertain	2.6	M;M;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Uncertain	-4.1	D;D;D
REVEL	Pathogenic	0.70
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0010	D;D;D
Polyphen		0.99	D;D;D
Vest4		0.87
MVP		0.86
MPC		1.6
ClinPred		0.35	T
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.51
gMVP		0.71

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: rs752594411; hg19: chr17-39913948;