8-143932697-C-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_201384.3(PLEC):c.1753G>T(p.Ala585Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000138 in 1,454,540 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A585T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.105

Publications

4 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 These names were superseded by plectin.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: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.099947035).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLEC	NM_201384.3 link	c.1753G>T	p.Ala585Ser	missense_variant	Exon 15 of 32	ENST00000345136.8	NP_958786.1
PLEC	NM_201378.4 link	c.1711G>T	p.Ala571Ser	missense_variant	Exon 15 of 32	ENST00000356346.7	NP_958780.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLEC	ENST00000345136.8 link	c.1753G>T	p.Ala585Ser	missense_variant	Exon 15 of 32	1	NM_201384.3	ENSP00000344848.3
PLEC	ENST00000356346.7 link	c.1711G>T	p.Ala571Ser	missense_variant	Exon 15 of 32	1	NM_201378.4	ENSP00000348702.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000220

AC:

AN:

227470

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000298

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000138

AC:

AN:

1454540

Hom.:

Cov.:

AF XY:

0.00000691

AC XY:

AN XY:

723354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33274

American (AMR)

AF:

0.00

AC:

AN:

43996

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26010

East Asian (EAS)

AF:

0.000509

AC:

AN:

39272

South Asian (SAS)

AF:

0.00

AC:

AN:

85546

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51356

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1109282

Other (OTH)

AF:

0.00

AC:

AN:

60046

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

Alfa

AF:

0.000360

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000334

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

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

Uncertain:1

Aug 28, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 612 of the PLEC protein (p.Ala612Ser). 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. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. This variant has not been reported in the literature in individuals affected with PLEC-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.053

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

Eigen

Benign

-0.58

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.81

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

M_CAP

Pathogenic

0.55

MetaRNN

Benign

0.10

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

MetaSVM

Uncertain

-0.15

MutationAssessor

Benign

1.8

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

PhyloP100

-0.10

PrimateAI

Uncertain

0.61

PROVEAN

Benign

0.10

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

REVEL

Benign

0.18

Sift

Benign

0.064

T;T;T;D;D;D;D;T;.;T;T

Sift4G

Benign

0.27

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

Polyphen

0.093

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

Vest4

0.20

MutPred

0.26

.;.;.;.;Gain of phosphorylation at A722 (P = 0.0346);.;.;.;.;.;.;

MVP

0.63

ClinPred

0.067

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.24

gMVP

0.19

Mutation Taster

=77/23

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over