rs149926974

Variant names:

• chr17-41758805-T-C
• rs149926974
• NM_002230.4:c.1563A>G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6 BP7 BS1 BS2

The NM_002230.4(JUP):​c.1563A>G​(p.Ala521Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00525 in 1,611,740 control chromosomes in the GnomAD database, including 104 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.0070 (11 hom., cov: 32)
  • Exomes 𝑓: 0.0051 (93 hom.)
• Consequence: JUP NM_002230.4 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:13
• Conservation: PhyloP100: -7.14

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 Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.94).
• BP6: Variant 17-41758805-T-C is Benign according to our data. Variant chr17-41758805-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 45837.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=6, Uncertain_significance=1}. Variant chr17-41758805-T-C is described in Lovd as [Benign]. Variant chr17-41758805-T-C is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-7.14 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00703 (1070/152290) while in subpopulation NFE AF= 0.00638 (434/68016). AF 95% confidence interval is 0.00589. There are 11 homozygotes in gnomad4. There are 675 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 11 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JUP	NM_002230.4	c.1563A>G	p.Ala521Ala	synonymous_variant	Exon 9 of 14	ENST00000393931.8	NP_002221.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
JUP	ENST00000393931.8	c.1563A>G	p.Ala521Ala	synonymous_variant	Exon 9 of 14	1	NM_002230.4	ENSP00000377508.3
JUP	ENST00000310706.9	c.1563A>G	p.Ala521Ala	synonymous_variant	Exon 9 of 15	1		ENSP00000311113.5
JUP	ENST00000393930.5	c.1563A>G	p.Ala521Ala	synonymous_variant	Exon 9 of 15	5		ENSP00000377507.1
JUP	ENST00000585793.1	n.161A>G		non_coding_transcript_exon_variant	Exon 2 of 3	2

Frequencies

GnomAD3 genomes AF: 0.00703 AC: 1070 AN: 152172 Hom.: 11 Cov.: 32

Gnomad AFR AF: 0.000893

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000720

Gnomad ASJ AF: 0.000577

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000621

Gnomad FIN AF: 0.0542

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00638

Gnomad OTH AF: 0.00335

GnomAD3 exomes AF: 0.00665 AC: 1624 AN: 244152 Hom.: 29 AF XY: 0.00649 AC XY: 862 AN XY: 132766

Gnomad AFR exome AF: 0.000646

Gnomad AMR exome AF: 0.000938

Gnomad ASJ exome AF: 0.000304

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000829

Gnomad FIN exome AF: 0.0484

Gnomad NFE exome AF: 0.00495

Gnomad OTH exome AF: 0.00486

GnomAD4 exome AF: 0.00506 AC: 7384 AN: 1459450 Hom.: 93 Cov.: 32 AF XY: 0.00505 AC XY: 3662 AN XY: 725812

Gnomad4 AFR exome AF: 0.000508

Gnomad4 AMR exome AF: 0.000787

Gnomad4 ASJ exome AF: 0.000767

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000826

Gnomad4 FIN exome AF: 0.0462

Gnomad4 NFE exome AF: 0.00413

Gnomad4 OTH exome AF: 0.00320

GnomAD4 genome AF: 0.00703 AC: 1070 AN: 152290 Hom.: 11 Cov.: 32 AF XY: 0.00906 AC XY: 675 AN XY: 74478

Gnomad4 AFR AF: 0.000890

Gnomad4 AMR AF: 0.000719

Gnomad4 ASJ AF: 0.000577

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000622

Gnomad4 FIN AF: 0.0542

Gnomad4 NFE AF: 0.00638

Gnomad4 OTH AF: 0.00331

Alfa AF: 0.00534 Hom.: 4

Bravo AF: 0.00240

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:13

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Benign:5

-

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Jul 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

JUP: BP4, BP7, BS2 -

Mar 03, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

-

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Nov 19, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified Benign:4

May 10, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Ala521Ala in Exon 09 of JUP: This variant is not expected to have clinical signi ficance because it does not alter an amino acid residue, is not located within t he splice consensus sequence and has been identified in 0.4% (29/7018) of Europe an American chromosomes from a broad population by the NHLBI Exome Sequencing Pr oject (http://evs.gs.washington.edu/EVS; dbSNP rs149926974). -

-

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

-

Clinical Genetics, Academic Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

-

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Naxos disease Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Cardiomyopathy Benign:1

Jun 15, 2016

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Arrhythmogenic right ventricular dysplasia 12 Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Cardiovascular phenotype Benign:1

Oct 02, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

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

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.94
CADD	Benign	0.35
DANN	Benign	0.32
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		3.2

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: rs149926974; hg19: chr17-39915057;