rs201097255

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006073.4(TRDN):c.71T>A(p.Val24Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000616 in 1,613,998 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V24M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00065 ( 0 hom. )

Consequence

TRDN
NM_006073.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 5.72

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRDN	NM_006073.4 linkuse as main transcript	c.71T>A	p.Val24Glu	missense_variant	2/41	ENST00000334268.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRDN	ENST00000334268.9 linkuse as main transcript	c.71T>A	p.Val24Glu	missense_variant	2/41	1	NM_006073.4	A2	Q13061-1

Frequencies

GnomAD3 genomes

AF:

0.000328

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000341

AC:

AN:

249158

Hom.:

AF XY:

0.000385

AC XY:

AN XY:

135170

show subpopulations

Gnomad AFR exome

AF:

0.000258

Gnomad AMR exome

AF:

0.000608

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000487

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000646

AC:

944

AN:

1461670

Hom.:

Cov.:

AF XY:

0.000626

AC XY:

455

AN XY:

727116

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000626

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.0000375

Gnomad4 NFE exome

AF:

0.000782

Gnomad4 OTH exome

AF:

0.000513

GnomAD4 genome

AF:

0.000328

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000426

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000446

Hom.:

Bravo

AF:

0.000400

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000513

AC:

ESP6500EA

AF:

0.000482

AC:

ExAC

AF:

0.000339

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.000652

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Catecholaminergic polymorphic ventricular tachycardia 1;C3809536:Catecholaminergic polymorphic ventricular tachycardia 5

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Nov 05, 2021

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 21, 2021

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Oct 18, 2022

This sequence change replaces valine, which is neutral and non-polar, with glutamic acid, which is acidic and polar, at codon 24 of the TRDN protein (p.Val24Glu). This variant is present in population databases (rs201097255, gnomAD 0.06%). 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: 408736). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on TRDN 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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 01, 2023

The p.V24E variant (also known as c.71T>A), located in coding exon 2 of the TRDN gene, results from a T to A substitution at nucleotide position 71. The valine at codon 24 is replaced by glutamic acid, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.66

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.18

Cadd

Uncertain

Dann

Benign

0.97

DEOGEN2

Benign

0.19

T;.;.;.

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.76

T;T;T;T

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.56

D;D;D;D

MetaSVM

Benign

-0.29

MutationAssessor

Benign

0.90

L;L;.;L

MutationTaster

Benign

0.55

D;D;D;D

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.7

N;.;D;N

REVEL

Uncertain

0.29

Sift

Uncertain

0.0010

D;.;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0

D;.;.;.

Vest4

0.67

MVP

0.82

ClinPred

0.050

GERP RS

5.8

Varity_R

0.50

gMVP

0.46

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