rs17737379

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_006073.4(TRDN):c.1257C>G(p.Asp419Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000059 in 1,525,082 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000015 ( 0 hom. )

Consequence

TRDN
NM_006073.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.616

Publications

15 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: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.025837868).

BP6

Variant 6-123375621-G-C is Benign according to our data. Variant chr6-123375621-G-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1020540.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006073.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
TRDN	NM_006073.4	MANE Select	c.1257C>G	p.Asp419Glu	missense	Exon 19 of 41	NP_006064.2
TRDN	NM_001251987.2		c.1260C>G	p.Asp420Glu	missense	Exon 19 of 21	NP_001238916.1
TRDN	NM_001407315.1		c.1200C>G	p.Asp400Glu	missense	Exon 18 of 20	NP_001394244.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	ENST00000334268.9	TSL:1 MANE Select	c.1257C>G	p.Asp419Glu	missense	Exon 19 of 41	ENSP00000333984.5
	TRDN	ENST00000662930.1		c.1260C>G	p.Asp420Glu	missense	Exon 19 of 21	ENSP00000499585.1

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151902

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

141010

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000146

AC:

AN:

1373180

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

677354

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000674

AC:

AN:

29690

American (AMR)

AF:

0.00

AC:

AN:

31690

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24722

East Asian (EAS)

AF:

0.00

AC:

AN:

34862

South Asian (SAS)

AF:

0.00

AC:

AN:

75456

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48978

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5494

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1065308

Other (OTH)

AF:

0.00

AC:

AN:

56980

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00233887), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.350

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:

0.0000461

AC:

AN:

151902

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

74162

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41374

American (AMR)

AF:

0.00

AC:

AN:

15250

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10562

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67932

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

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.:

6038

ExAC

AF:

0.0000206

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Jun 13, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with glutamic acid, which is acidic and polar, at codon 419 of the TRDN protein (p.Asp419Glu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TRDN-related conditions. ClinVar contains an entry for this variant (Variation ID: 1020540). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glutamic acid amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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.

Cardiovascular phenotype

Benign:1

Aug 24, 2023

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely 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

0.064

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.83

CADD

Benign

7.2

(source)

DANN

Benign

0.30

DEOGEN2

Benign

0.063

Eigen

Benign

-1.1

Eigen_PC

Benign

-0.79

FATHMM_MKL

Benign

0.43

LIST_S2

Benign

0.20

M_CAP

Benign

0.018

MetaRNN

Benign

0.026

MetaSVM

Benign

-0.91

MutationAssessor

Benign

-0.81

PhyloP100

0.62

PrimateAI

Benign

0.43

PROVEAN

Benign

0.22

REVEL

Benign

0.070

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.029

MutPred

0.23

Loss of MoRF binding (P = 0.0942)

MVP

0.030

ClinPred

0.050

GERP RS

4.1

Varity_R

0.032

gMVP

0.0026

Mutation Taster

=99/1

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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