Traits

Traits linked to MT-TC

mitochondrially encoded tRNA-Cys (UGU/C)

The Human Phenotype Ontology links 25 traits to MT-TC, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of the cardiovascular system

Trait	How often it is seen
Abnormal heart rate	Not recorded
Abnormal left ventricular function	Not recorded
Cardiac failure	Not recorded
High blood pressure	Not recorded
Left ventricular hypertrophy	Not recorded
Stroke-like episode	Not recorded
Wolff-Parkinson-White syndrome	Not recorded

Abnormality of the nervous system

Trait	How often it is seen
Dementia	Not recorded
Encephalopathy	Not recorded
Grand mal seizures	Not recorded
Migraine	Not recorded
Weakness of one side of body	Not recorded

Abnormality of the eye

Trait	How often it is seen
Cerebral visual impairment	Not recorded
Clouding of the lens of the eye at birth	Not recorded
Eye muscle paralysis	Not recorded
Hemianopia	Not recorded

Abnormality of the musculoskeletal system

Trait	How often it is seen
Mitochondrial myopathy	Not recorded
Muscle tissue disease	Not recorded
Ragged-red muscle fibers	Not recorded

Abnormality of the ear

Trait	How often it is seen
Bilateral sensorineural hearing impairment	Not recorded
Progressive sensorineural hearing impairment	Not recorded

Laboratory abnormality

Trait	How often it is seen
Diabetes mellitus	Not recorded
Increased lactate in body	Not recorded

Abnormality of the digestive system

Trait	How often it is seen
Episodic vomiting	Not recorded

Growth abnormality

Trait	How often it is seen
Growth abnormality	Not recorded

How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the traits linked to MT-TC and how often each is seen. Find out more at hpo.jax.org.

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