M-14691-C-T

Variant names:

• chrM-14691-C-T
• rs1556424478
• unassigned_transcript_4817:c.52G>A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP6_Moderate

Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Mitomap GenBank: 𝑓 0.00020 (AC: 14)
• Consequence: TRNE missense
• Scores: Mitotip Benign 5.3
• Clinical Significance: Likely benign criteria provided, single submitter B:1 No linked disesase in Mitomap
• Conservation: PhyloP100: -1.35

Genes affected

TRNE (HGNC:7479): (mitochondrially encoded tRNA glutamic acid)

CYTB (HGNC:7427): (mitochondrially encoded cytochrome b) Predicted to enable metal ion binding activity. Predicted to be involved in several processes, including electron transport coupled proton transport; response to cobalamin; and response to glucagon. Located in mitochondrion. Implicated in ovarian carcinoma and urinary bladder cancer. [provided by Alliance of Genome Resources, Apr 2022]

ND6 (HGNC:7462): (mitochondrially encoded NADH dehydrogenase 6) Enables NADH dehydrogenase (ubiquinone) activity. Involved in mitochondrial electron transport, NADH to ubiquinone and mitochondrial respiratory chain complex I assembly. Predicted to be located in mitochondrial inner membrane. Implicated in Leber hereditary optic neuropathy; Leigh disease; and spinal muscular atrophy with lower extremity predominante 2B. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP6: Variant M-14691-C-T is Benign according to our data. Variant chrM-14691-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 690203.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRNE	unassigned_transcript_4817	c.52G>A	p.Val18Ile	missense_variant	Exon 1 of 1
CYTB	unassigned_transcript_4818	c.-56C>T		upstream_gene_variant
ND6	unassigned_transcript_4816	c.-18G>A		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt

Frequencies

GnomAD4 exome Cov.: 0

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

Mitomap GenBank AF: 0.00020 AC: 14

Gnomad homoplasmic AF: 0.000053 AC: 3 AN: 56433

Gnomad heteroplasmic AF: 0.000018 AC: 1 AN: 56433

Mitomap

No disease associated.

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

MELAS syndrome Benign:1

Jul 12, 2019

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

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The NC_012920.1:m.14691C>T variant in MT-TE gene is interpreted to be a Likely Benign variant based on the modified ACMG guidelines (unpublished). This variant meets the following evidence codes reported in the guidelines: BS4, BP4, BP6 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
Mitotip	Benign	5.3
Hmtvar	Benign	0.0

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1556424478; hg19: chrM-14692;