8-143920720-G-A

Position:

chr8-143920720-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The ENST00000345136.8(PLEC):c.9101C>T(p.Ala3034Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0712 in 1,603,080 control chromosomes in the GnomAD database, including 4,628 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A3034E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.056 ( 330 hom., cov: 33)

Exomes 𝑓: 0.073 ( 4298 hom. )

Consequence

PLEC
ENST00000345136.8 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 2.68

Variant links:

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 These names were superseded by plectin.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]

PLEC links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0016744137).

BP6

Variant 8-143920720-G-A is Benign according to our data. Variant chr8-143920720-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 93089.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-143920720-G-A is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0806 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLEC	NM_201384.3 linkuse as main transcript	c.9101C>T	p.Ala3034Val	missense_variant	32/32	ENST00000345136.8	NP_958786.1
PLEC	NM_201378.4 linkuse as main transcript	c.9059C>T	p.Ala3020Val	missense_variant	32/32	ENST00000356346.7	NP_958780.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLEC	ENST00000345136.8 linkuse as main transcript	c.9101C>T	p.Ala3034Val	missense_variant	32/32	1	NM_201384.3	ENSP00000344848		Q15149-4
PLEC	ENST00000356346.7 linkuse as main transcript	c.9059C>T	p.Ala3020Val	missense_variant	32/32	1	NM_201378.4	ENSP00000348702		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.0556

AC:

8462

AN:

152128

Hom.:

330

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0147

Gnomad AMI

AF:

0.116

Gnomad AMR

AF:

0.0584

Gnomad ASJ

AF:

0.0827

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0112

Gnomad FIN

AF:

0.0722

Gnomad MID

AF:

0.0506

Gnomad NFE

AF:

0.0824

Gnomad OTH

AF:

0.0603

GnomAD3 exomes

AF:

0.0573

AC:

13562

AN:

236610

Hom.:

541

AF XY:

0.0577

AC XY:

7517

AN XY:

130372

show subpopulations

Gnomad AFR exome

AF:

0.0122

Gnomad AMR exome

AF:

0.0431

Gnomad ASJ exome

AF:

0.0896

Gnomad EAS exome

AF:

0.000224

Gnomad SAS exome

AF:

0.0121

Gnomad FIN exome

AF:

0.0744

Gnomad NFE exome

AF:

0.0837

Gnomad OTH exome

AF:

0.0712

GnomAD4 exome

AF:

0.0728

AC:

105630

AN:

1450834

Hom.:

4298

Cov.:

AF XY:

0.0713

AC XY:

51486

AN XY:

722282

show subpopulations

Gnomad4 AFR exome

AF:

0.0130

Gnomad4 AMR exome

AF:

0.0451

Gnomad4 ASJ exome

AF:

0.0860

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.0125

Gnomad4 FIN exome

AF:

0.0715

Gnomad4 NFE exome

AF:

0.0830

Gnomad4 OTH exome

AF:

0.0677

GnomAD4 genome

AF:

0.0556

AC:

8461

AN:

152246

Hom.:

330

Cov.:

AF XY:

0.0546

AC XY:

4063

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.0147

Gnomad4 AMR

AF:

0.0582

Gnomad4 ASJ

AF:

0.0827

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.0112

Gnomad4 FIN

AF:

0.0722

Gnomad4 NFE

AF:

0.0824

Gnomad4 OTH

AF:

0.0601

Alfa

AF:

0.0729

Hom.:

399

Bravo

AF:

0.0536

TwinsUK

AF:

0.0763

AC:

283

ALSPAC

AF:

0.0898

AC:

346

ESP6500AA

AF:

0.0141

AC:

ESP6500EA

AF:

0.0731

AC:

611

ExAC

AF:

0.0551

AC:

6629

Asia WGS

AF:

0.00895

AC:

AN:

3476

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:5

Benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jan 13, 2015	p.Ala3171Val in exon 32 of PLEC: This variant is not expected to have clinical s ignificance because it has been identified in 7.3% (611/8360) of European Americ an chromosomes from a broad population by the NHLBI Exome Sequencing Project (ht tp://evs.gs.washington.edu/EVS; dbSNP rs35858667). -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 03, 2017	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. -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Apr 22, 2013	- -
Likely benign, no assertion criteria provided	clinical testing	Genetic Services Laboratory, University of Chicago	-	Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

- -

not provided

Benign:1

Likely benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.047

.;.;.;.;T;.;.;.;.;.

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.40

FATHMM_MKL

Benign

0.50

LIST_S2

Uncertain

0.96

D;D;D;D;D;D;D;D;D;D

MetaRNN

Benign

0.0017

T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

1.1

.;.;.;.;L;.;.;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N;N;N;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.89

N;N;N;N;N;N;N;N;.;N

REVEL

Benign

0.13

Sift

Uncertain

0.016

D;D;D;D;D;D;D;D;.;D

Sift4G

Uncertain

0.013

D;D;D;D;D;D;D;D;.;D

Polyphen

0.021

B;B;B;B;B;B;B;B;.;.

Vest4

0.29

ClinPred

0.014

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.3

Varity_R

0.081

gMVP

0.53

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over