rs200541837

Positions:

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_201384.3(PLEC):c.10498C>T(p.Arg3500Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000871 in 1,613,944 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R3500H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00043 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00092 ( 5 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 2.49

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 These names were superseded by plectin.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 -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.11645228).

BP6

Variant 8-143919323-G-A is Benign according to our data. Variant chr8-143919323-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 196819.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000427 (65/152326) while in subpopulation SAS AF= 0.00124 (6/4820). AF 95% confidence interval is 0.000612. There are 0 homozygotes in gnomad4. There are 41 alleles in male gnomad4 subpopulation. Median coverage is 34. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLEC	NM_201384.3 linkuse as main transcript	c.10498C>T	p.Arg3500Cys	missense_variant	32/32	ENST00000345136.8	NP_958786.1	Q15149-4
PLEC	NM_201378.4 linkuse as main transcript	c.10456C>T	p.Arg3486Cys	missense_variant	32/32	ENST00000356346.7	NP_958780.1	Q15149-9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLEC	ENST00000345136.8 linkuse as main transcript	c.10498C>T	p.Arg3500Cys	missense_variant	32/32	1	NM_201384.3	ENSP00000344848.3		Q15149-4
PLEC	ENST00000356346.7 linkuse as main transcript	c.10456C>T	p.Arg3486Cys	missense_variant	32/32	1	NM_201378.4	ENSP00000348702.3		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.000427

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000779

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000601

AC:

150

AN:

249408

Hom.:

AF XY:

0.000717

AC XY:

AN XY:

135354

show subpopulations

Gnomad AFR exome

AF:

0.0000646

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00176

Gnomad FIN exome

AF:

0.0000928

Gnomad NFE exome

AF:

0.000787

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000917

AC:

1340

AN:

1461618

Hom.:

Cov.:

AF XY:

0.000880

AC XY:

640

AN XY:

727136

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00174

Gnomad4 FIN exome

AF:

0.0000941

Gnomad4 NFE exome

AF:

0.00102

Gnomad4 OTH exome

AF:

0.000679

GnomAD4 genome

AF:

0.000427

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000550

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00124

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.000779

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000725

Hom.:

Bravo

AF:

0.000344

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00119

AC:

ExAC

AF:

0.000719

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000474

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jun 26, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 25, 2021	This variant is associated with the following publications: (PMID: 23774525, 25530118, 29797489) -

PLEC-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 23, 2024

The PLEC c.10579C>T variant is predicted to result in the amino acid substitution p.Arg3527Cys. This variant was reported in the heterozygous state in a son and mother with epidermolysis bullosa simplex (Bolling et al 2014. PubMed ID: 23774525). The c.10579C>T variant was also reported in the homozygous state in two siblings with epidermolysis bullosa simplex with muscular dystrophy (Reported as c.10909C>T; p.Arg3637Cys with NM_201380 in Ahmad et al 2018. PubMed ID: 29797489). This variant is reported in 0.18% of alleles in individuals of South Asian descent in gnomAD, including one homozygous individual. Although we suspect that this variant may be benign, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jun 15, 2017

- -

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

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.18

CADD

Benign

DANN

Benign

0.85

DEOGEN2

Benign

0.28

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

Eigen

Benign

0.038

Eigen_PC

Benign

0.0070

FATHMM_MKL

Benign

0.70

LIST_S2

Uncertain

0.92

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

M_CAP

Pathogenic

0.33

MetaRNN

Benign

0.12

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

MetaSVM

Benign

-0.29

MutationAssessor

Uncertain

2.9

.;.;.;.;M;.;.;.;.;.

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-4.3

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

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0010

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

Sift4G

Pathogenic

0.0010

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

Polyphen

0.99

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

Vest4

0.61

MVP

0.60

ClinPred

0.12

GERP RS

4.1

Varity_R

0.073

gMVP

0.37

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