6-123366143-A-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_006073.4(TRDN):c.1313T>A(p.Ile438Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00271 in 1,612,394 control chromosomes in the GnomAD database, including 140 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I438S) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0030 ( 12 hom., cov: 32)

Exomes 𝑓: 0.0027 ( 128 hom. )

Consequence

TRDN
NM_006073.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 2.38

Publications

30 publications found

Variant links:

Genes affected

TRDN (HGNC:12261): (triadin) This gene encodes an integral membrane protein found in skeletal and cardiac muscle. The encoded protein plays a role in skeletal muscle excitation-contraction coupling as part of the calcium release complex and is required for normal skeletal muscle strength. This protein indirectly links triads and microtubules in skeletal muscle. Mutations in this gene are associated with cardiac arrythmia syndrome and some variants in this gene may be associated with sudden cardiac death. [provided by RefSeq, May 2022]

TRDN Gene-Disease associations (from GenCC):

catecholaminergic polymorphic ventricular tachycardia
Inheritance: AD, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
catecholaminergic polymorphic ventricular tachycardia 5
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
familial long QT syndrome
Inheritance: AR Classification: STRONG Submitted by: G2P
long QT syndrome
Inheritance: AR Classification: STRONG Submitted by: ClinGen

TRDN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.002306044).

BP6

Variant 6-123366143-A-T is Benign according to our data. Variant chr6-123366143-A-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 227109.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.0679 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRDN	NM_006073.4 link	c.1313T>A	p.Ile438Asn	missense_variant	Exon 20 of 41	ENST00000334268.9	NP_006064.2	Q13061-1
TRDN	NM_001251987.2 link	c.1316T>A	p.Ile439Asn	missense_variant	Exon 20 of 21		NP_001238916.1	A0A590UJV0Q8IVK2
TRDN	NM_001407315.1 link	c.1256T>A	p.Ile419Asn	missense_variant	Exon 19 of 20		NP_001394244.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRDN	ENST00000334268.9 link	c.1313T>A	p.Ile438Asn	missense_variant	Exon 20 of 41	1	NM_006073.4	ENSP00000333984.5		Q13061-1
TRDN	ENST00000662930.1 link	c.1316T>A	p.Ile439Asn	missense_variant	Exon 20 of 21			ENSP00000499585.1		A0A590UJV0

Frequencies

GnomAD3 genomes

AF:

0.00304

AC:

463

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0741

Gnomad SAS

AF:

0.00870

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00430

GnomAD2 exomes

AF:

0.00693

AC:

1719

AN:

248196

AF XY:

0.00680

show subpopulations

Gnomad AFR exome

AF:

0.0000647

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0811

Gnomad FIN exome

AF:

0.0000465

Gnomad NFE exome

AF:

0.0000711

Gnomad OTH exome

AF:

0.00432

GnomAD4 exome

AF:

0.00268

AC:

3907

AN:

1460166

Hom.:

128

Cov.:

AF XY:

0.00280

AC XY:

2035

AN XY:

726346

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33454

American (AMR)

AF:

0.000157

AC:

AN:

44640

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26100

East Asian (EAS)

AF:

0.0722

AC:

2859

AN:

39592

South Asian (SAS)

AF:

0.00781

AC:

672

AN:

86096

European-Finnish (FIN)

AF:

0.0000188

AC:

AN:

53298

Middle Eastern (MID)

AF:

0.000521

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.0000450

AC:

AN:

1110920

Other (OTH)

AF:

0.00519

AC:

313

AN:

60306

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

175

349

524

698

873

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

124

186

248

310

<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:

0.00305

AC:

464

AN:

152228

Hom.:

Cov.:

AF XY:

0.00356

AC XY:

265

AN XY:

74420

show subpopulations

African (AFR)

AF:

0.000241

AC:

AN:

41528

American (AMR)

AF:

0.000915

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.0740

AC:

382

AN:

5160

South Asian (SAS)

AF:

0.00870

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68020

Other (OTH)

AF:

0.00425

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

Heterozygous variant carriers

105

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.0000120

Hom.:

173975

ExAC

AF:

0.00695

AC:

839

EpiCase

AF:

0.0000546

EpiControl

AF:

0.00

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:5

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jun 11, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Ile438Asn in exon 20 of TRDN: This variant is not expected to have clinical si gnificance it has been identified in 8.1% (693/8588) of East Asian chromosomes, including 21 homozygotes, by the Exome Aggregation Consortium (ExAC, http://exac .broadinstitute.org; dbSNP rs2873479). -

Oct 12, 2016

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

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

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Oct 29, 2023

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

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

TRDN-related disorder

Benign:1

Apr 09, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Catecholaminergic polymorphic ventricular tachycardia 1

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Jun 09, 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. -

Catecholaminergic polymorphic ventricular tachycardia 5

Benign:1

Nov 09, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

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

0.069

BayesDel_addAF

Benign

-0.72

BayesDel_noAF

Benign

-0.74

CADD

Benign

(source)

DANN

Benign

0.78

DEOGEN2

Benign

0.063

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.56

LIST_S2

Benign

0.35

MetaRNN

Benign

0.0023

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.0

PhyloP100

2.4

PrimateAI

Benign

0.36

PROVEAN

Benign

0.45

REVEL

Benign

0.072

Sift

Uncertain

0.0080

Sift4G

Benign

0.49

Polyphen

0.0

Vest4

0.088

MVP

0.055

ClinPred

0.027

GERP RS

4.7

Varity_R

0.087

gMVP

0.0033

Mutation Taster

=100/0

polymorphism (auto)

(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