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Table 3 Comparison of the clinical features of MELAS with 14453G → A mutation

From: Late-onset MELAS syndrome with mtDNA 14453G→A mutation masquerading as an acute encephalitis: a case report

Author

(year)

Age, y /Sex

Mutation

Locus

Mutation rate

Muscle /Blood

Phenotype

Clinical features

mRS

Peak /Current

FU

(Months)

Ravn (2001)

7/F

5628 T → C

13535A → C

14453G → A

MTTA

ND5

ND6

NR

NR

82%/78%

MELAS

Myoclonic epilepsy,

partial seizure,

ataxia with dystonia

5/NR

NR

Present case

74/M

189A → G

14453G → A

16129G → A

D-loop

ND6

D-loop

45%/NE

53%/NE

81%/NE

MELAS

Cognitive impairment, psychosis, left hemiparesis

5/2

8

  1. F female, FU following up period, MELAS mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes, M male, mRS modified Rankin Scale, NE not examined, NR not reported, y years