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Start free with EleplanRecurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome
ORPHA:480864Disease
Also called TANGO2-related metabolic encephalopathy-arrhythmia syndrome
What it is
Recurrent metabolic encephalomyopathic crises-rhabdomyolysis-cardiac arrhythmia-intellectual disability syndrome is a rare, genetic, neurodegenerative disease characterized by episodic metabolic encephalomyopathic crises (of variable frequency and severity which are frequently precipitated by an acute illness) which manifest with profound muscle weakness, ataxia, seizures, cardiac arrhythmias, rhabdomyolysis with myoglobinuria, elevated plasma creatine kinase, hypoglycemia, lactic acidosis, increased acylcarnitines and a disorientated or comatose state. Global developmental delay, intellectual disability and cortical, pyramidal and cerebellar signs develop with subsequent progressive neurodegeneration causing loss of expressive language and varying degrees of cerebral atrophy.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy
- Inheritance
- Autosomal recessive
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
7Common30–79%
20- Abnormality of extrapyramidal motor function
- Acute rhabdomyolysis
- Arrhythmia
- Ataxia
- Compensated hypothyroidism
- Delayed ability to walk
- Delayed speech and language development
- Developmental regression
- Elevated circulating hepatic transaminase concentration
- Feeding difficulties in infancy
- Gastrointestinal dysmotility
- Global brain atrophy
- Hyperammonemia
- Hypoglycemia
- Incoordination
- Involuntary movements
- Lactic acidosis
- Moderate global developmental delay
- Prolonged QT interval
- Seizure
Sometimes5–29%
22- Amblyopia
- Babinski sign
- Bilateral tonic-clonic seizure
- Cerebral visual impairment
- Clonus
- Dysphagia
- Dystonia
- Elevated plasma acylcarnitine levels
and 14 more in this range
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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