6-123381354-G-T

Variant names:

• chr6-123381354-G-T
• rs3813328
• NM_006073.4:c.1186+16C>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.1186+16C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000715 in 1,398,624 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: TRDN NM_006073.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.794
• 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 (BayesDel_noAF=-0.7).

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.1186+16C>A		intron	N/A	NP_006064.2
	TRDN	NM_001251987.2		c.1189+16C>A		intron	N/A	NP_001238916.1
	TRDN	NM_001407315.1		c.1129+16C>A		intron	N/A	NP_001394244.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	ENST00000334268.9	TSL:1 MANE Select	c.1186+16C>A		intron	N/A	ENSP00000333984.5
	TRDN	ENST00000662930.1		c.1189+16C>A		intron	N/A	ENSP00000499585.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 7.15e-7 AC: 1 AN: 1398624 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 690588

African (AFR) AF: 0.00 AC: 0 AN: 31976

American (AMR) AF: 0.00 AC: 0 AN: 36408

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25124

East Asian (EAS) AF: 0.00 AC: 0 AN: 36496

South Asian (SAS) AF: 0.0000126 AC: 1 AN: 79196

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5670

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1077116

Other (OTH) AF: 0.00 AC: 0 AN: 58022

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.70
CADD	Benign	6.9
DANN	Benign	0.74
PhyloP100		-0.79

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs3813328; hg19: chr6-123702499;