Table 3.

Mitochondrial disorders and epilepsy.

Category of disorder	Syndrome
Mitochondrial complex deficiencies	(i) Complex I deficiency (ii) Complex II deficiency (iii) Complex III deficiency (iv) Complex IV deficiency (v) Complex V deficiency
Mitochondrial DNA disorders	(i) mtDNA depletion syndromes  (a) POLG1 disease   (1) Alpers-Huttenlocher disease   (2) Childhood onset epilepsia partialis continua (EPC)   (3) Myoclonic epilepsy myopathy sensory ataxia (MEMSA) (ii) mtDNA deletion syndromes  (a) Kearns-Sayre syndrome (KSS)  (b) Chronic progressive external ophthalmoplegia (CPEO) (iii) Myoclonic epilepsy with ragged-red fibers (MERRF) (iv) Myoclonic epilepsy, lactic acidosis, and stroke (MELAS)
Other associated syndromes	Leigh syndrome