8-143919691-C-T
Variant names:
Variant summary
Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6
The NM_201384.3(PLEC):c.10130G>A(p.Arg3377Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000106 in 1,602,238 control chromosomes in the GnomAD database, including 1 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 0.00011 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00011 ( 1 hom. )
Consequence
PLEC
NM_201384.3 missense
NM_201384.3 missense
Scores
5
14
Clinical Significance
Conservation
PhyloP100: 3.94
Genes affected
PLEC (HGNC:9069): (plectin) Plectin is a prominent member of an important family of structurally and in part functionally related proteins, termed plakins or cytolinkers, that are capable of interlinking different elements of the cytoskeleton. Plakins, with their multi-domain structure and enormous size, not only play crucial roles in maintaining cell and tissue integrity and orchestrating dynamic changes in cytoarchitecture and cell shape, but also serve as scaffolding platforms for the assembly, positioning, and regulation of signaling complexes (reviewed in PMID: 9701547, 11854008, and 17499243). Plectin is expressed as several protein isoforms in a wide range of cell types and tissues from a single gene located on chromosome 8 in humans (PMID: 8633055, 8698233). Until 2010, this locus was named plectin 1 (symbol PLEC1 in human; Plec1 in mouse and rat) and the gene product had been referred to as "hemidesmosomal protein 1" or "plectin 1, intermediate filament binding 500kDa". These names were superseded by plectin. The plectin gene locus in mouse on chromosome 15 has been analyzed in detail (PMID: 10556294, 14559777), revealing a genomic exon-intron organization with well over 40 exons spanning over 62 kb and an unusual 5' transcript complexity of plectin isoforms. Eleven exons (1-1j) have been identified that alternatively splice directly into a common exon 2 which is the first exon to encode plectin's highly conserved actin binding domain (ABD). Three additional exons (-1, 0a, and 0) splice into an alternative first coding exon (1c), and two additional exons (2alpha and 3alpha) are optionally spliced within the exons encoding the acting binding domain (exons 2-8). Analysis of the human locus has identified eight of the eleven alternative 5' exons found in mouse and rat (PMID: 14672974); exons 1i, 1j and 1h have not been confirmed in human. Furthermore, isoforms lacking the central rod domain encoded by exon 31 have been detected in mouse (PMID:10556294), rat (PMID: 9177781), and human (PMID: 11441066, 10780662, 20052759). The short alternative amino-terminal sequences encoded by the different first exons direct the targeting of the various isoforms to distinct subcellular locations (PMID: 14559777). As the expression of specific plectin isoforms was found to be dependent on cell type (tissue) and stage of development (PMID: 10556294, 12542521, 17389230) it appears that each cell type (tissue) contains a unique set (proportion and composition) of plectin isoforms, as if custom-made for specific requirements of the particular cells. Concordantly, individual isoforms were found to carry out distinct and specific functions (PMID: 14559777, 12542521, 18541706). In 1996, a number of groups reported that patients suffering from epidermolysis bullosa simplex with muscular dystrophy (EBS-MD) lacked plectin expression in skin and muscle tissues due to defects in the plectin gene (PMID: 8698233, 8941634, 8636409, 8894687, 8696340). Two other subtypes of plectin-related EBS have been described: EBS-pyloric atresia (PA) and EBS-Ogna. For reviews of plectin-related diseases see PMID: 15810881, 19945614. Mutations in the plectin gene related to human diseases should be named based on the position in NM_000445 (variant 1, isoform 1c), unless the mutation is located within one of the other alternative first exons, in which case the position in the respective Reference Sequence should be used. [provided by RefSeq, Aug 2011]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -3 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.03679356).
BP6
Variant 8-143919691-C-T is Benign according to our data. Variant chr8-143919691-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 478626.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=3}.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PLEC | ENST00000345136.8 | c.10130G>A | p.Arg3377Gln | missense_variant | Exon 32 of 32 | 1 | NM_201384.3 | ENSP00000344848.3 | ||
| PLEC | ENST00000356346.7 | c.10088G>A | p.Arg3363Gln | missense_variant | Exon 32 of 32 | 1 | NM_201378.4 | ENSP00000348702.3 |
Frequencies
GnomAD3 genomes 0.000112 AC: 17AN: 152242Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.000155 AC: 37AN: 238022Hom.: 0 AF XY: 0.000145 AC XY: 19AN XY: 130848
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GnomAD4 exome AF: 0.000106 AC: 153AN: 1449878Hom.: 1 Cov.: 74 AF XY: 0.000121 AC XY: 87AN XY: 720502
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GnomAD4 genome 0.000112 AC: 17AN: 152360Hom.: 0 Cov.: 33 AF XY: 0.000107 AC XY: 8AN XY: 74508
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:2
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Uncertain:2Benign:1
Jun 08, 2018
Eurofins Ntd Llc (ga)
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
- -
Nov 07, 2023
Revvity Omics, Revvity
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
- -
Sep 01, 2023
CeGaT Center for Human Genetics Tuebingen
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
- -
Epidermolysis bullosa simplex, Ogna type;C2677349:Epidermolysis bullosa simplex 5C, with pyloric atresia;C2931072:Epidermolysis bullosa simplex 5B, with muscular dystrophy;C3150989:Autosomal recessive limb-girdle muscular dystrophy type 2Q;C4225309:Epidermolysis bullosa simplex with nail dystrophy Uncertain:1
Dec 05, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 3404 of the PLEC protein (p.Arg3404Gln). This variant is present in population databases (rs375724891, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with PLEC-related conditions. ClinVar contains an entry for this variant (Variation ID: 478626). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on PLEC protein function. 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. -
not specified Benign:1
Nov 16, 2017
GeneDx
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Benign
.;.;.;.;T;.;.;.;.;.
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D;D;D;D;D;D;D;D
M_CAP
Uncertain
D
MetaRNN
Benign
T;T;T;T;T;T;T;T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
.;.;.;.;L;.;.;.;.;.
PrimateAI
Uncertain
T
PROVEAN
Benign
N;N;N;N;N;N;N;N;.;N
REVEL
Benign
Sift
Benign
T;T;T;T;T;T;T;T;.;T
Sift4G
Benign
T;T;T;T;T;T;T;T;.;T
Polyphen
B;B;B;B;B;B;B;B;.;.
Vest4
MVP
ClinPred
T
GERP RS
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gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at