chr3-14129490-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_024334.3(TMEM43):c.91G>A(p.Glu31Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000694 in 1,613,994 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000066 ( 0 hom. )

Consequence

TMEM43
NM_024334.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 5.76

Publications

3 publications found

Variant links:

Genes affected

TMEM43 (HGNC:28472): (transmembrane protein 43) This gene belongs to the TMEM43 family. Defects in this gene are the cause of familial arrhythmogenic right ventricular dysplasia type 5 (ARVD5), also known as arrhythmogenic right ventricular cardiomyopathy type 5 (ARVC5). Arrhythmogenic right ventricular dysplasia is an inherited disorder, often involving both ventricles, and is characterized by ventricular tachycardia, heart failure, sudden cardiac death, and fibrofatty replacement of cardiomyocytes. This gene contains a response element for PPAR gamma (an adipogenic transcription factor), which may explain the fibrofatty replacement of the myocardium, a characteristic pathological finding in ARVC. [provided by RefSeq, Oct 2008]

TMEM43 Gene-Disease associations (from GenCC):

arrhythmogenic right ventricular dysplasia 5
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, G2P
autosomal dominant Emery-Dreifuss muscular dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
auditory neuropathy, autosomal dominant 3
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
Emery-Dreifuss muscular dystrophy 7, autosomal dominant
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

TMEM43 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1722045).

BP6

Variant 3-14129490-G-A is Benign according to our data. Variant chr3-14129490-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 263617.

BS2

High AC in GnomAd4 at 15 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024334.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TMEM43	NM_024334.3	MANE Select	c.91G>A	p.Glu31Lys	missense	Exon 2 of 12	NP_077310.1
TMEM43	NM_001407274.1		c.91G>A	p.Glu31Lys	missense	Exon 2 of 12	NP_001394203.1
TMEM43	NM_001407275.1		c.91G>A	p.Glu31Lys	missense	Exon 2 of 12	NP_001394204.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TMEM43	ENST00000306077.5	TSL:1 MANE Select	c.91G>A	p.Glu31Lys	missense	Exon 2 of 12	ENSP00000303992.5
TMEM43	ENST00000432444.2	TSL:3	n.*121G>A		non_coding_transcript_exon	Exon 3 of 13	ENSP00000395617.1
TMEM43	ENST00000432444.2	TSL:3	n.*121G>A		3_prime_UTR	Exon 3 of 13	ENSP00000395617.1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000955

AC:

AN:

251392

AF XY:

0.0000736

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000664

AC:

AN:

1461868

Hom.:

Cov.:

AF XY:

0.0000619

AC XY:

AN XY:

727238

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33480

American (AMR)

AF:

0.000313

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000665

AC:

AN:

1111998

Other (OTH)

AF:

0.0000497

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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

AF:

0.0000986

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74308

show subpopulations

African (AFR)

AF:

0.000338

AC:

AN:

41420

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

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:

0.00

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Arrhythmogenic right ventricular dysplasia 5;C3553060:Emery-Dreifuss muscular dystrophy 7, autosomal dominant;C5676964:Auditory neuropathy, autosomal dominant 3

Uncertain:1

Sep 09, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Arrhythmogenic right ventricular dysplasia 5

Uncertain:1

Jan 11, 2025

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 31 of the TMEM43 protein (p.Glu31Lys). This variant is present in population databases (rs754536393, gnomAD 0.04%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 25351510). ClinVar contains an entry for this variant (Variation ID: 263617). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt TMEM43 protein function with a negative predictive value of 80%. 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.

Cardiomyopathy

Benign:1

Mar 29, 2023

Color Diagnostics, LLC DBA Color Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Cardiovascular phenotype

Benign:1

Sep 04, 2023

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.45

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0083

Eigen

Benign

-0.11

Eigen_PC

Benign

0.046

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.010

MetaRNN

Benign

0.17

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

PhyloP100

5.8

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.1

REVEL

Benign

0.058

Sift

Benign

0.31

Sift4G

Benign

0.080

Polyphen

0.0020

Vest4

0.57

MutPred

0.53

Gain of ubiquitination at E31 (P = 0.0077)

MVP

0.39

MPC

0.075

ClinPred

0.032

GERP RS

4.2

Varity_R

0.11

gMVP

0.70

Mutation Taster

=75/25

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over