6-123438079-A-T

Variant names:

• chr6-123438079-A-T
• NM_006073.4:c.1035T>A
• TRDN p.Ile345Ile

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_006073.4(TRDN):​c.1035T>A​(p.Ile345Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. I345I) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TRDN NM_006073.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0190
• 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-AS1 (HGNC:40592): (TRDN antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=0.019 with no splicing effect.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	NM_006073.4	MANE Select	c.1035T>A	p.Ile345Ile	synonymous	Exon 12 of 41	NP_006064.2	Q13061-1
	TRDN	NM_001251987.2		c.1038T>A	p.Ile346Ile	synonymous	Exon 12 of 21	NP_001238916.1	A0A590UJV0
	TRDN	NM_001407315.1		c.978T>A	p.Ile326Ile	synonymous	Exon 11 of 20	NP_001394244.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TRDN	ENST00000334268.9	TSL:1 MANE Select	c.1035T>A	p.Ile345Ile	synonymous	Exon 12 of 41	ENSP00000333984.5	Q13061-1
	TRDN	ENST00000962661.1		c.1038T>A	p.Ile346Ile	synonymous	Exon 12 of 41	ENSP00000632720.1
	TRDN	ENST00000962654.1		c.1038T>A	p.Ile346Ile	synonymous	Exon 12 of 41	ENSP00000632713.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	3.1
DANN	Benign	0.78
PhyloP100		0.019

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr6-123759224;