PhenomeGene — Human Disease Gene Website SeriesSDHA

Clinical Characteristics

Mitochondrial complex II deficiency:
Organs with a high energy demand are affected and patients present with:
•    Dialatative/hypertrophic cardiomyopathy
•    Optic atrophy/ophthalmoplegia
•    Leigh syndrome
•    Ataxia
•    Leukoencephalopathy
•    Lactic acidosis
•    Seizures
•    Cognitive impairment
•    Muscle weakness
•    Exercise intolerance

The diagnosis of SDHA-related syndrome is confirmed by performing genetic testing in an affected individual, which enables the detection of a disease-causing changes in the SDHA gene.

Tumorigenesis:
•    Paraganglioma
•    Pheochromocytoma
•    Gastrointestinal stromal tumour

The diagnosis of SDHA-related tumour is confirmed by performing genetic testing in an affected individual, which enables the detection of a disease-causing change in the SDHA gene.