chrM-5806-T-C

Position:

• chrM-5806-T-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP6_Moderate BS2

The ENST00000387405.1(MT-TC):​n.21A>G variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Benign (★).

• Frequency: Mitomap GenBank: 𝑓 0.00030 (AC: 20)
• Consequence: MT-TC ENST00000387405.1 non_coding_transcript_exon
• Scores: Mitotip Benign 4.3
• Clinical Significance: Benign criteria provided, single submitter B:1 No linked disesase in Mitomap
• Conservation: PhyloP100: -6.24

Genes affected

MT-TC (HGNC:7477): (mitochondrially encoded tRNA cysteine)

TRNC (HGNC:):

MT-TY (HGNC:7502): (mitochondrially encoded tRNA tyrosine)

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP6: Variant M-5806-T-C is Benign according to our data. Variant chrM-5806-T-C is described in ClinVar as [Benign]. Clinvar id is 689998.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS2: High AC in GnomadMitoHomoplasmic at 15

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TRNC	TRNC.1	n.21A>G		non_coding_transcript_exon_variant	1/1
TRNY	TRNY.1			downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MT-TC	ENST00000387405.1	n.21A>G		non_coding_transcript_exon_variant	1/1
MT-TY	ENST00000387409.1			downstream_gene_variant

Frequencies

GnomAD4 exome Cov.: 0

We have no GnomAD4 genomes data on this position. Probably position not covered by the project.

Mitomap GenBank AF: 0.00030 AC: 20

Gnomad homoplasmic AF: 0.00027 AC: 15 AN: 56431

Gnomad heteroplasmic AF: 0.0 AC: 0 AN: 56431

Mitomap

No disease associated.

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Juvenile myopathy, encephalopathy, lactic acidosis AND stroke Benign:1

Benign, criteria provided, single submitter

clinical testing

Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine

Jul 12, 2019

The NC_012920.1:m.5806T>C variant in MT-TC gene is interpreted to be a Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes reported in the guidelines: BS1, BS2, BP4 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Mitotip	Benign	4.3
Hmtvar	Pathogenic	0.40

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs879211572; hg19: chrM-5807;