chr8-143925578-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_201384.3(PLEC):c.4351G>A(p.Glu1451Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000658 in 1,579,770 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts 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. E1451G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00072 ( 2 hom., cov: 35)

Exomes 𝑓: 0.00065 ( 2 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: 7.70

Publications

2 publications found

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 These names were superseded by plectin.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 Gene-Disease associations (from GenCC):

epidermolysis bullosa simplex
Inheritance: AD Classification: STRONG Submitted by: G2P
epidermolysis bullosa simplex 5A, Ogna type
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Genomics England PanelApp
autosomal recessive limb-girdle muscular dystrophy type 2Q
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
congenital myasthenic syndrome
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
epidermolysis bullosa simplex 5B, with muscular dystrophy
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, Genomics England PanelApp
epidermolysis bullosa simplex 5C, with pyloric atresia
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
epidermolysis bullosa simplex with nail dystrophy
Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia
autosomal recessive limb-girdle muscular dystrophy
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
aplasia cutis congenita
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
cholestasis
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

PLEC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.110022515).

BP6

Variant 8-143925578-C-T is Benign according to our data. Variant chr8-143925578-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 282780.

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.000722 (110/152300) while in subpopulation AMR AF = 0.00366 (56/15308). AF 95% confidence interval is 0.00289. There are 2 homozygotes in GnomAd4. There are 64 alleles in the male GnomAd4 subpopulation. Median coverage is 35. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLEC	NM_201384.3 link	c.4351G>A	p.Glu1451Lys	missense_variant	Exon 31 of 32	ENST00000345136.8	NP_958786.1	Q15149-4
PLEC	NM_201378.4 link	c.4309G>A	p.Glu1437Lys	missense_variant	Exon 31 of 32	ENST00000356346.7	NP_958780.1	Q15149-9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLEC	ENST00000345136.8 link	c.4351G>A	p.Glu1451Lys	missense_variant	Exon 31 of 32	1	NM_201384.3	ENSP00000344848.3		Q15149-4
PLEC	ENST00000356346.7 link	c.4309G>A	p.Glu1437Lys	missense_variant	Exon 31 of 32	1	NM_201378.4	ENSP00000348702.3		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.000723

AC:

110

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00366

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000413

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000647

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.000608

AC:

113

AN:

185844

AF XY:

0.000645

show subpopulations

Gnomad AFR exome

AF:

0.000286

Gnomad AMR exome

AF:

0.00113

Gnomad ASJ exome

AF:

0.000113

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000709

Gnomad OTH exome

AF:

0.00121

GnomAD4 exome

AF:

0.000651

AC:

929

AN:

1427470

Hom.:

Cov.:

AF XY:

0.000637

AC XY:

452

AN XY:

709172

show subpopulations

African (AFR)

AF:

0.0000608

AC:

AN:

32906

American (AMR)

AF:

0.00116

AC:

AN:

42298

Ashkenazi Jewish (ASJ)

AF:

0.000156

AC:

AN:

25682

East Asian (EAS)

AF:

0.0000261

AC:

AN:

38386

South Asian (SAS)

AF:

0.000441

AC:

AN:

83990

European-Finnish (FIN)

AF:

0.000221

AC:

AN:

36240

Middle Eastern (MID)

AF:

0.000876

AC:

AN:

5710

European-Non Finnish (NFE)

AF:

0.000700

AC:

772

AN:

1102842

Other (OTH)

AF:

0.000858

AC:

AN:

59416

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

130

196

261

326

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

112

140

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000722

AC:

110

AN:

152300

Hom.:

Cov.:

AF XY:

0.000859

AC XY:

AN XY:

74486

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

41574

American (AMR)

AF:

0.00366

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.000414

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000647

AC:

AN:

67998

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000538

Hom.:

Bravo

AF:

0.000884

ExAC

AF:

0.000485

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3474

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:2

Feb 28, 2017

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Dec 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PLEC: BS2 -

Mar 27, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 06, 2023

Revvity Omics, Revvity

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 07, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 1478 of the PLEC protein (p.Glu1478Lys). This variant is present in population databases (no rsID available, gnomAD 0.1%), including at least one homozygous and/or hemizygous individual. This missense change has been observed in individual(s) with clinical features of limb-girdle muscular dystrophy (Invitae). ClinVar contains an entry for this variant (Variation ID: 282780). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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. -

PLEC-related disorder

Uncertain:1

Jul 22, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The PLEC c.4432G>A variant is predicted to result in the amino acid substitution p.Glu1478Lys. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.11% of alleles in individuals of Latino descent in gnomAD, which is likely too common for an undocumented disease-causing variant. 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. -

Autosomal recessive limb-girdle muscular dystrophy type 2Q

Uncertain:1

Mar 14, 2022

MGZ Medical Genetics Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.29

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

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

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.96

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

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.11

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

MetaSVM

Benign

-0.96

MutationAssessor

Uncertain

2.4

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

PhyloP100

7.7

PrimateAI

Pathogenic

0.89

PROVEAN

Benign

-1.7

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

REVEL

Benign

0.22

Sift

Benign

0.086

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

Sift4G

Uncertain

0.019

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

Polyphen

1.0

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

Vest4

0.60

MutPred

0.24

.;.;.;.;Gain of ubiquitination at E1588 (P = 0.0198);.;.;.;.;

MVP

0.66

ClinPred

0.12

GERP RS

4.4

Varity_R

0.20

gMVP

0.78

Mutation Taster

=96/4

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over