NM_006073.4:c.1754G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_006073.4(TRDN):c.1754G>A(p.Arg585Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000673 in 1,575,980 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).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000070 ( 0 hom. )

Consequence

TRDN
NM_006073.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.529

Publications

2 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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.031573296).

BP6

Variant 6-123267736-C-T is Benign according to our data. Variant chr6-123267736-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 578641.

BS1

Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.0000702 (100/1423890) while in subpopulation MID AF = 0.00444 (25/5634). AF 95% confidence interval is 0.00309. There are 0 homozygotes in GnomAdExome4. There are 59 alleles in the male GnomAdExome4 subpopulation. Median coverage is 28. This position passed quality control check.

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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	NM_006073.4	MANE Select	c.1754G>A	p.Arg585Gln	missense	Exon 32 of 41	NP_006064.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	ENST00000334268.9	TSL:1 MANE Select	c.1754G>A	p.Arg585Gln	missense	Exon 32 of 41	ENSP00000333984.5

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

151970

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000522

AC:

AN:

210586

AF XY:

0.0000528

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000103

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000534

Gnomad OTH exome

AF:

0.000196

GnomAD4 exome

AF:

0.0000702

AC:

100

AN:

1423890

Hom.:

Cov.:

AF XY:

0.0000835

AC XY:

AN XY:

706292

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31942

American (AMR)

AF:

0.000173

AC:

AN:

40366

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

38168

South Asian (SAS)

AF:

0.000100

AC:

AN:

79728

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51818

Middle Eastern (MID)

AF:

0.00444

AC:

AN:

5634

European-Non Finnish (NFE)

AF:

0.0000494

AC:

AN:

1092346

Other (OTH)

AF:

0.000102

AC:

AN:

58706

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.430

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:

0.0000395

AC:

AN:

152090

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41516

American (AMR)

AF:

0.00

AC:

AN:

15250

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000415

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

67966

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.615

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:

0.000222

Hom.:

Bravo

AF:

0.0000491

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000123

AC:

ExAC

AF:

0.0000499

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3472

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Oct 20, 2022

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

Catecholaminergic polymorphic ventricular tachycardia 1

Uncertain:1

Jul 25, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 585 of the TRDN protein (p.Arg585Gln). This variant is present in population databases (rs199986608, gnomAD 0.01%). 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: 578641). 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 glutamine 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

Feb 03, 2022

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

0.056

BayesDel_addAF

Benign

-0.56

BayesDel_noAF

Benign

-0.82

CADD

Benign

(source)

DANN

Benign

0.11

DEOGEN2

Benign

0.064

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.014

LIST_S2

Benign

0.51

M_CAP

Benign

0.0094

MetaRNN

Benign

0.032

MetaSVM

Benign

-0.86

MutationAssessor

Benign

-0.97

PhyloP100

0.53

PrimateAI

Benign

0.23

PROVEAN

Benign

0.66

REVEL

Benign

0.024

Sift

Benign

1.0

Sift4G

Benign

0.68

Polyphen

0.0

Vest4

0.20

MVP

0.014

ClinPred

0.026

GERP RS

0.046

Varity_R

0.027

gMVP

0.0050

Mutation Taster

=95/5

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