rs370569372

Positions:

chr8-143924905-C-T

Variant summary

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

The NM_201384.3(PLEC):c.5024G>A(p.Arg1675Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00104 in 1,585,642 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00064 ( 2 hom., cov: 35)

Exomes 𝑓: 0.0011 ( 0 hom. )

Consequence

PLEC
NM_201384.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:5

Conservation

PhyloP100: 1.46

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 These names were superseded by plectin.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=0.13119397).

BP6

Variant 8-143924905-C-T is Benign according to our data. Variant chr8-143924905-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 196748.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=5, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000644 (98/152150) while in subpopulation NFE AF= 0.00119 (81/67980). AF 95% confidence interval is 0.000982. There are 2 homozygotes in gnomad4. There are 44 alleles in male gnomad4 subpopulation. Median coverage is 35. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLEC	NM_201384.3 linkuse as main transcript	c.5024G>A	p.Arg1675Gln	missense_variant	31/32	ENST00000345136.8	NP_958786.1	Q15149-4
PLEC	NM_201378.4 linkuse as main transcript	c.4982G>A	p.Arg1661Gln	missense_variant	31/32	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.5024G>A	p.Arg1675Gln	missense_variant	31/32	1	NM_201384.3	ENSP00000344848.3		Q15149-4
PLEC	ENST00000356346.7 linkuse as main transcript	c.4982G>A	p.Arg1661Gln	missense_variant	31/32	1	NM_201378.4	ENSP00000348702.3		Q15149-9

Frequencies

GnomAD3 genomes

AF:

0.000645

AC:

AN:

152036

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00119

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000653

AC:

131

AN:

200596

Hom.:

AF XY:

0.000625

AC XY:

AN XY:

111996

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000700

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000111

Gnomad NFE exome

AF:

0.00114

Gnomad OTH exome

AF:

0.00116

GnomAD4 exome

AF:

0.00108

AC:

1552

AN:

1433492

Hom.:

Cov.:

AF XY:

0.00102

AC XY:

728

AN XY:

712342

show subpopulations

Gnomad4 AFR exome

AF:

0.000152

Gnomad4 AMR exome

AF:

0.000640

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000128

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000136

Gnomad4 NFE exome

AF:

0.00130

Gnomad4 OTH exome

AF:

0.00119

GnomAD4 genome

AF:

0.000644

AC:

AN:

152150

Hom.:

Cov.:

AF XY:

0.000591

AC XY:

AN XY:

74390

show subpopulations

Gnomad4 AFR

AF:

0.000241

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00119

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000825

Hom.:

Bravo

AF:

0.000661

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000684

AC:

ExAC

AF:

0.000456

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:4Benign:3

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2024	PLEC: BS2 -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Apr 27, 2020	This variant is associated with the following publications: (PMID: 32707200) -
Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Oct 31, 2019	- -
Uncertain significance, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Uncertain significance, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jun 05, 2018	- -
Uncertain significance, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jan 04, 2024

Variant summary: PLEC1 c.5105G>A (p.Arg1702Gln) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.001 in 1585642 control chromosomes in the gnomAD v4 database, including 2 homozygotes. c.5105G>A has been reported in the literature in one individual affected with posterior segment uveitis (Li_2020). The report does not provide unequivocal conclusions about association of the variant with PLEC1-Related Disorders. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication have been ascertained in the context of this evaluation (PMID: 3270720). Five submitters have cited clinical-significance assessments for this variant to ClinVar after 2014 and classified this variant as uncertain significance (n=1) and likely benign (n=4). Based on the evidence outlined above, the variant was classified as likely benign. -

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 18, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.054

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

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.15

FATHMM_MKL

Benign

0.53

LIST_S2

Uncertain

0.95

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

M_CAP

Pathogenic

0.85

MetaRNN

Benign

0.13

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

MetaSVM

Benign

-0.72

MutationAssessor

Benign

0.69

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

PrimateAI

Uncertain

0.79

PROVEAN

Benign

-0.31

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

REVEL

Benign

0.11

Sift

Benign

0.24

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

Sift4G

Benign

0.33

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

Polyphen

0.14

B;D;B;B;B;B;B;B;.

Vest4

0.34

MVP

0.69

ClinPred

0.034

GERP RS

3.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.058

gMVP

0.29

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