rs782770278
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_002230.4(JUP):c.329C>T(p.Ala110Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000398 in 1,607,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A110S) has been classified as Uncertain significance.
Frequency
Consequence
NM_002230.4 missense
Scores
Clinical Significance
Conservation
Publications
- arrhythmogenic right ventricular dysplasia 12Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
- inherited epidermolysis bullosaInheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
- Naxos diseaseInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, G2P, Orphanet, PanelApp Australia, Labcorp Genetics (formerly Invitae)
- lethal acantholytic epidermolysis bullosaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| JUP | NM_002230.4 | c.329C>T | p.Ala110Val | missense_variant | Exon 3 of 14 | ENST00000393931.8 | NP_002221.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| JUP | ENST00000393931.8 | c.329C>T | p.Ala110Val | missense_variant | Exon 3 of 14 | 1 | NM_002230.4 | ENSP00000377508.3 |
Frequencies
GnomAD3 genomes AF: 0.0000328 AC: 5AN: 152238Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000213 AC: 5AN: 234826 AF XY: 0.0000235 show subpopulations
GnomAD4 exome AF: 0.0000405 AC: 59AN: 1455726Hom.: 0 Cov.: 34 AF XY: 0.0000442 AC XY: 32AN XY: 723818 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000328 AC: 5AN: 152238Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74372 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
Cardiomyopathy Uncertain:1
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Cardiovascular phenotype Uncertain:1
The p.A110V variant (also known as c.329C>T), located in coding exon 2 of the JUP gene, results from a C to T substitution at nucleotide position 329. The alanine at codon 110 is replaced by valine, an amino acid with similar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6500 samples (13000 alleles) with coverage at this position. This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this variant remains unclear. -
Naxos disease;C1969081:Arrhythmogenic right ventricular dysplasia 12 Uncertain:1
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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant  is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 264370). This variant has not been reported in the literature in individuals affected with JUP-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 110 of the JUP protein (p.Ala110Val). -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at