17-41755075-G-A

Variant names:

• chr17-41755075-G-A
• rs8074883
• NM_002230.4:c.*669C>T

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_002230.4(JUP):​c.*669C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00729 in 388,904 control chromosomes in the GnomAD database, including 68 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.015 (57 hom., cov: 32)
  • Exomes 𝑓: 0.0023 (11 hom.)
• Consequence: JUP NM_002230.4 3_prime_UTR
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.10
• Publications: 2 publications found

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 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: Genomics England PanelApp, G2P, Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• lethal acantholytic epidermolysis bullosa

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 17-41755075-G-A is Benign according to our data. Variant chr17-41755075-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 323151.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0151 (2294/152278) while in subpopulation AFR AF = 0.0493 (2048/41542). AF 95% confidence interval is 0.0475. There are 57 homozygotes in GnomAd4. There are 1091 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 57 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
JUP	NM_002230.4	c.*669C>T		3_prime_UTR_variant	Exon 14 of 14	ENST00000393931.8	NP_002221.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
JUP	ENST00000393931.8	c.*669C>T		3_prime_UTR_variant	Exon 14 of 14	1	NM_002230.4	ENSP00000377508.3
JUP	ENST00000310706.9	c.*372C>T		3_prime_UTR_variant	Exon 15 of 15	1		ENSP00000311113.5
JUP	ENST00000393930.5	c.*372C>T		3_prime_UTR_variant	Exon 15 of 15	5		ENSP00000377507.1

Frequencies

GnomAD3 genomes AF: 0.0151 AC: 2295 AN: 152160 Hom.: 57 Cov.: 32

Gnomad AFR AF: 0.0494

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0129

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000412

Gnomad OTH AF: 0.00956

GnomAD4 exome AF: 0.00228 AC: 540 AN: 236626 Hom.: 11 Cov.: 0 AF XY: 0.00198 AC XY: 238 AN XY: 119974

African (AFR) AF: 0.0497 AC: 347 AN: 6978

American (AMR) AF: 0.00519 AC: 37 AN: 7132

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 8980

East Asian (EAS) AF: 0.00 AC: 0 AN: 22198

South Asian (SAS) AF: 0.00 AC: 0 AN: 2092

European-Finnish (FIN) AF: 0.0000499 AC: 1 AN: 20050

Middle Eastern (MID) AF: 0.00644 AC: 8 AN: 1242

European-Non Finnish (NFE) AF: 0.000309 AC: 47 AN: 152178

Other (OTH) AF: 0.00634 AC: 100 AN: 15776

GnomAD4 genome AF: 0.0151 AC: 2294 AN: 152278 Hom.: 57 Cov.: 32 AF XY: 0.0147 AC XY: 1091 AN XY: 74452

African (AFR) AF: 0.0493 AC: 2048 AN: 41542

American (AMR) AF: 0.0129 AC: 197 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000412 AC: 28 AN: 68028

Other (OTH) AF: 0.00946 AC: 20 AN: 2114

Alfa AF: 0.0128 Hom.: 19

Bravo AF: 0.0172

Asia WGS AF: 0.00318 AC: 12 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Naxos disease Benign:1

Jan 13, 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. -

not provided Benign:1

May 12, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Arrhythmogenic right ventricular dysplasia 12 Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: 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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.20
DANN	Benign	0.36
PhyloP100		-1.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs8074883; hg19: chr17-39911327;