rs188305538

Variant summary

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

The NM_201384.3(PLEC):c.4162C>T(p.Arg1388Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000899 in 1,590,454 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1388L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00090 ( 1 hom., cov: 35)

Exomes 𝑓: 0.00090 ( 17 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -0.683

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 These names were superseded by plectin.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=0.003644973).

BP6

Variant 8-143925767-G-A is Benign according to our data. Variant chr8-143925767-G-A is described in ClinVar as [Benign]. Clinvar id is 471586.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-143925767-G-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0009 (137/152268) while in subpopulation EAS AF= 0.0248 (128/5160). AF 95% confidence interval is 0.0213. There are 1 homozygotes in gnomad4. There are 71 alleles in male gnomad4 subpopulation. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome at 6 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PLEC	NM_201384.3 linkuse as main transcript	c.4162C>T	p.Arg1388Trp	missense_variant	31/32	ENST00000345136.8
PLEC	NM_201378.4 linkuse as main transcript	c.4120C>T	p.Arg1374Trp	missense_variant	31/32	ENST00000356346.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PLEC	ENST00000345136.8 linkuse as main transcript	c.4162C>T	p.Arg1388Trp	missense_variant	31/32	1	NM_201384.3		Q15149-4
PLEC	ENST00000356346.7 linkuse as main transcript	c.4120C>T	p.Arg1374Trp	missense_variant	31/32	1	NM_201378.4		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.000907

AC:

138

AN:

152150

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0247

Gnomad SAS

AF:

0.00165

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00245

AC:

514

AN:

209892

Hom.:

AF XY:

0.00209

AC XY:

245

AN XY:

117002

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000604

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0284

Gnomad SAS exome

AF:

0.000766

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000425

Gnomad OTH exome

AF:

0.00129

GnomAD4 exome

AF:

0.000899

AC:

1293

AN:

1438186

Hom.:

Cov.:

AF XY:

0.000894

AC XY:

639

AN XY:

715014

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000455

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0281

Gnomad4 SAS exome

AF:

0.000693

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000704

Gnomad4 OTH exome

AF:

0.000819

GnomAD4 genome

AF:

0.000900

AC:

137

AN:

152268

Hom.:

Cov.:

AF XY:

0.000954

AC XY:

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0248

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000236

Hom.:

Bravo

AF:

0.00125

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.00219

AC:

257

Asia WGS

AF:

0.00866

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

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

Invitae

Jan 29, 2024

- -

PLEC-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 19, 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). -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Dec 09, 2019

This variant is associated with the following publications: (PMID: 26320847) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.54

Cadd

Uncertain

Dann

Benign

0.96

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.40

LIST_S2

Pathogenic

0.98

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

MetaRNN

Benign

0.0036

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

MetaSVM

Benign

-1.1

MutationTaster

Benign

0.90

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

PrimateAI

Benign

0.47

PROVEAN

Uncertain

-2.4

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

REVEL

Benign

0.048

Sift

Uncertain

0.023

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

Sift4G

Uncertain

0.0050

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

Polyphen

0.89

P;P;P;P;P;P;P;P;.

Vest4

0.23

MVP

0.23

ClinPred

0.031

GERP RS

3.6

Varity_R

0.15

gMVP

0.41

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