6-123377874-A-T

Variant names:

• chr6-123377874-A-T
• rs28494009
• NM_006073.4:c.1211T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006073.4(TRDN):​c.1211T>A​(p.Val404Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000072 in 1,388,314 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V404G) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: TRDN NM_006073.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0250
• Publications: 0 publications found

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

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.03672698).

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.1211T>A	p.Val404Glu	missense	Exon 17 of 41	NP_006064.2
	TRDN	NM_001251987.2		c.1214T>A	p.Val405Glu	missense	Exon 17 of 21	NP_001238916.1
	TRDN	NM_001407315.1		c.1154T>A	p.Val385Glu	missense	Exon 16 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.1211T>A	p.Val404Glu	missense	Exon 17 of 41	ENSP00000333984.5
	TRDN	ENST00000662930.1		c.1214T>A	p.Val405Glu	missense	Exon 17 of 21	ENSP00000499585.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.20e-7 AC: 1 AN: 1388314 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 689316

African (AFR) AF: 0.00 AC: 0 AN: 31450

American (AMR) AF: 0.00 AC: 0 AN: 38430

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25216

East Asian (EAS) AF: 0.00 AC: 0 AN: 37976

South Asian (SAS) AF: 0.00 AC: 0 AN: 80528

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50856

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4896

European-Non Finnish (NFE) AF: 9.42e-7 AC: 1 AN: 1061272

Other (OTH) AF: 0.00 AC: 0 AN: 57690

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.66
CADD	Benign	18
DANN	Benign	0.92
DEOGEN2	Benign	0.082	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.023	N
LIST_S2	Benign	0.32	T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.037	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.20	N
PhyloP100		0.025
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.070	N
REVEL	Benign	0.013
Sift	Benign	0.20	T
Sift4G	Benign	1.0	T
Polyphen		0.0	B
Vest4		0.17
MutPred		0.26		Loss of MoRF binding (P = 0.0125)
MVP		0.040
ClinPred		0.058	T
GERP RS		-0.35
Varity_R		0.14
gMVP		0.016
Mutation Taster		=95/5	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs28494009; hg19: chr6-123699019;