rs142946078

Positions:

chr8-143917037-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_201384.3(PLEC):c.12784G>A(p.Val4262Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000944 in 1,610,610 control chromosomes in the GnomAD database, including 26 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 Benign (★★).

Frequency

Genomes: 𝑓 0.0016 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00087 ( 25 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 1.22

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 These names were superseded by plectin.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=0.00306499).

BP6

Variant 8-143917037-C-T is Benign according to our data. Variant chr8-143917037-C-T is described in ClinVar as [Benign]. Clinvar id is 93029.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-143917037-C-T is described in Lovd as [Benign]. Variant chr8-143917037-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00164 (250/152248) while in subpopulation EAS AF= 0.0384 (199/5184). AF 95% confidence interval is 0.034. There are 1 homozygotes in gnomad4. There are 136 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 25 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLEC	NM_201384.3 linkuse as main transcript	c.12784G>A	p.Val4262Ile	missense_variant	32/32	ENST00000345136.8	NP_958786.1
PLEC	NM_201378.4 linkuse as main transcript	c.12742G>A	p.Val4248Ile	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.12784G>A	p.Val4262Ile	missense_variant	32/32	1	NM_201384.3	ENSP00000344848		Q15149-4
PLEC	ENST00000356346.7 linkuse as main transcript	c.12742G>A	p.Val4248Ile	missense_variant	32/32	1	NM_201378.4	ENSP00000348702		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.00165

AC:

251

AN:

152130

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000459

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0383

Gnomad SAS

AF:

0.00310

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00192

GnomAD3 exomes

AF:

0.00341

AC:

837

AN:

245524

Hom.:

AF XY:

0.00336

AC XY:

449

AN XY:

133786

show subpopulations

Gnomad AFR exome

AF:

0.000467

Gnomad AMR exome

AF:

0.000348

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0425

Gnomad SAS exome

AF:

0.00134

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000182

Gnomad OTH exome

AF:

0.00234

GnomAD4 exome

AF:

0.000871

AC:

1270

AN:

1458362

Hom.:

Cov.:

AF XY:

0.000906

AC XY:

657

AN XY:

724918

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.000291

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0206

Gnomad4 SAS exome

AF:

0.00152

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000549

Gnomad4 OTH exome

AF:

0.00392

GnomAD4 genome

AF:

0.00164

AC:

250

AN:

152248

Hom.:

Cov.:

AF XY:

0.00183

AC XY:

136

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.000457

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0384

Gnomad4 SAS

AF:

0.00290

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00190

Alfa

AF:

0.00141

Hom.:

Bravo

AF:

0.00168

ESP6500AA

AF:

0.000497

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00301

AC:

364

Asia WGS

AF:

0.0240

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Dec 19, 2016	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)	Sep 25, 2013	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Aug 14, 2018	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -

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

Jan 25, 2024

- -

PLEC-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 08, 2019

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Autosomal recessive limb-girdle muscular dystrophy type 2Q

Benign:1

Benign, criteria provided, single submitter

clinical testing

Al Jalila Children’s Genomics Center, Al Jalila Childrens Speciality Hospital

Mar 30, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Benign

0.79

DEOGEN2

Benign

0.072

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

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.20

LIST_S2

Uncertain

0.89

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

MetaRNN

Benign

0.0031

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

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.46

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

MutationTaster

Benign

1.0

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

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.39

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

REVEL

Benign

0.089

Sift

Benign

0.20

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

Sift4G

Benign

0.30

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

Polyphen

0.0

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

Vest4

0.053

MVP

0.32

ClinPred

0.0011

GERP RS

2.2

Varity_R

0.018

gMVP

0.51

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