17-41767524-A-T

Variant names:

• chr17-41767524-A-T
• rs878854482
• NM_002230.4:c.764T>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002230.4(JUP):​c.764T>A​(p.Leu255Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L255R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: JUP NM_002230.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.31
• Publications: 0 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: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.842

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002230.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JUP	NM_002230.4	MANE Select	c.764T>A	p.Leu255Gln	missense	Exon 5 of 14	NP_002221.1
	JUP	NM_001352773.2		c.764T>A	p.Leu255Gln	missense	Exon 5 of 14	NP_001339702.1
	JUP	NM_001352774.2		c.764T>A	p.Leu255Gln	missense	Exon 5 of 15	NP_001339703.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	JUP	ENST00000393931.8	TSL:1 MANE Select	c.764T>A	p.Leu255Gln	missense	Exon 5 of 14	ENSP00000377508.3
	JUP	ENST00000310706.9	TSL:1	c.764T>A	p.Leu255Gln	missense	Exon 5 of 15	ENSP00000311113.5
	JUP	ENST00000393930.5	TSL:5	c.764T>A	p.Leu255Gln	missense	Exon 5 of 15	ENSP00000377507.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 45

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.83	D
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.84	D
MetaSVM	Benign	-0.33	T
MutationAssessor	Uncertain	2.3	M
PhyloP100		9.3
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-5.3	D
REVEL	Uncertain	0.59
Sift	Benign	0.032	D
Sift4G	Uncertain	0.037	D
Polyphen		1.0	D
Vest4		0.87
MutPred		0.61		Loss of catalytic residue at L255 (P = 0.0448)
MVP		0.91
MPC		0.48
ClinPred		1.0	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.56
gMVP		0.64

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		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: rs878854482; hg19: chr17-39923776;