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A rare mitochondrial disease characterized by a variable phenotype comprising delayed psychomotor development or neurodevelopmental regression, hypotonia, seizures, microcephaly, optic atrophy, pyramidal signs, and peripheral neuropathy, among others. Age of onset and disease severity are also variable with some cases taking a fatal course in early infancy. Serum lactate levels may be elevated. Reported brain imaging findings include abnormal signals in the basal ganglia, cerebral and/or cerebellar atrophy, and white matter abnormalities.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for encephalopathy due to mitochondrial and peroxisomal fission defect.
6 publications have been identified in PubMed for encephalopathy due to mitochondrial and peroxisomal fission defect. Research spans Basic Science / Preclinical (50%), Other (17%), and Review / Meta-Analysis (17%).
Liu TT (2026). [PMID: 41765652](https://pubmed.ncbi.nlm.nih.gov/41765652/). *Zhonghua Fu Chan Ke Za Zhi*. [Other]
Wang YX (2025). [PMID: 40540175](https://pubmed.ncbi.nlm.nih.gov/40540175/). *Mol Neurobiol*. [Basic Science / Preclinical]
Wang Y (2025). [PMID: 40125832](https://pubmed.ncbi.nlm.nih.gov/40125832/). *CNS Neurosci Ther*. [Basic Science / Preclinical]
Magistrati M (2025). [PMID: 39859560](https://pubmed.ncbi.nlm.nih.gov/39859560/). *Int J Mol Sci*. [Review / Meta-Analysis]
Yang L (2025). [PMID: 41296099](https://pubmed.ncbi.nlm.nih.gov/41296099/). *Mol Neurobiol*. [Basic Science / Preclinical]
Data assembled from 3 of 12 sources · Last updated Sep 20, 2026, 5:34 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center