chr3-14141688-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBS1BS2

The NM_024334.3(TMEM43):c.1096G>A(p.Ala366Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00104 in 1,614,190 control chromosomes in the GnomAD database, including 19 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 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. A366V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0054 ( 9 hom., cov: 33)

Exomes 𝑓: 0.00058 ( 10 hom. )

Consequence

TMEM43
NM_024334.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:14

Conservation

PhyloP100: 4.22

Publications

5 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:

ENSG00000268279 (HGNC:):

ENSG00000268279 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -18 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 3 benign, 17 uncertain in NM_024334.3

BP4

Computational evidence support a benign effect (MetaRNN=0.008789092).

BP6

Variant 3-14141688-G-A is Benign according to our data. Variant chr3-14141688-G-A is described in ClinVar as Benign. ClinVar VariationId is 46138.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00544 (829/152338) while in subpopulation AFR AF = 0.0187 (778/41568). AF 95% confidence interval is 0.0176. There are 9 homozygotes in GnomAd4. There are 401 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 829 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM43	NM_024334.3 link	c.1096G>A	p.Ala366Thr	missense_variant	Exon 12 of 12	ENST00000306077.5	NP_077310.1	Q9BTV4A0A024R2F9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM43	ENST00000306077.5 link	c.1096G>A	p.Ala366Thr	missense_variant	Exon 12 of 12	1	NM_024334.3	ENSP00000303992.5		Q9BTV4
ENSG00000268279	ENST00000608606.1 link	n.235+2391G>A		intron_variant	Intron 3 of 4	5		ENSP00000476275.1		V9GY05

Frequencies

GnomAD3 genomes

AF:

0.00545

AC:

829

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0188

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00275

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:

0.0000294

Gnomad OTH

AF:

0.00334

GnomAD2 exomes

AF:

0.00139

AC:

349

AN:

251390

AF XY:

0.00107

show subpopulations

Gnomad AFR exome

AF:

0.0182

Gnomad AMR exome

AF:

0.00101

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000792

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.000581

AC:

849

AN:

1461852

Hom.:

Cov.:

AF XY:

0.000517

AC XY:

376

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.0195

AC:

653

AN:

33480

American (AMR)

AF:

0.00119

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53390

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000261

AC:

AN:

1112002

Other (OTH)

AF:

0.00161

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

113

170

226

283

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<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:

0.00544

AC:

829

AN:

152338

Hom.:

Cov.:

AF XY:

0.00538

AC XY:

401

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.0187

AC:

778

AN:

41568

American (AMR)

AF:

0.00274

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68042

Other (OTH)

AF:

0.00331

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

119

159

199

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00212

Hom.:

Bravo

AF:

0.00629

ESP6500AA

AF:

0.0186

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.00168

AC:

204

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:14

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:6

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jul 17, 2012

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Ala366Thr in exon 12 of TMEM43: This variant is not expected to have clinical si gnificance because it has been identified in 2% (82/4406) of African American ch romosomes from a broad population by the NHLBI Exome Sequencing Project (http:// evs.gs.washington.edu/EVS/rs36083134). Ala366Thr in exon 12 of TMEM43 (rs36083 134; allele frequency = 2%, 82/4406) ** -

Aug 19, 2016

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Apr 09, 2025

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:4

Sep 13, 2022

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiomyopathy

Benign:2

Oct 12, 2016

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 09, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Oct 20, 2015

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. -

Arrhythmogenic right ventricular dysplasia 5

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0087

Eigen

Benign

0.15

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.89

MetaRNN

Benign

0.0088

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

PhyloP100

4.2

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.46

REVEL

Benign

0.12

Sift

Benign

0.20

Sift4G

Benign

0.25

Polyphen

0.68

Vest4

0.29

MVP

0.31

MPC

0.17

ClinPred

0.012

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.088

gMVP

0.42

Mutation Taster

=58/42

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over