Novel POLG mutation in a patient with early-onset parkinsonism, progressive external ophthalmoplegia and optic atrophy.
Int J Neurosci
; 130(4): 319-321, 2020 Apr.
Article
em En
| MEDLINE
| ID: mdl-31613174
ABSTRACT
Introduction:
Mitochondrial DNA polymerase gamma (pol γ) encoded by POLG plays an indispensable role in the process of mitochondrial DNA replication and repair. The mutation of POLG can result in mitochondrial dysfunction leading to a broad spectrum of disease.Methods:
We report a 29-year-old Chinese female presented with levodopa-responsive parkinsonism, external ophthalmoplegia and optic atrophy. We conducted clinical, molecular iconographic, histological and genetic analyses on this patient.Results:
Sequencing of the POLG gene revealed compound heterozygote mutations of a novel c.2693T > C (p.I898T) mutation in exon17 and c.2993C > T (p.S998L) in exon19. The mutation c.2693T > C (p.I898T) has never been reported. Also our patient's cardinal symptoms are rare and different from other cases which have been reported.Conclusion:
This finding of ours has broadened the spectrum of phenotype caused by the mutation of POLG.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Atrofia Óptica
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Oftalmoplegia Externa Progressiva Crônica
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Transtornos Parkinsonianos
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DNA Polimerase gama
Limite:
Adult
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Female
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Humans
Idioma:
En
Revista:
Int J Neurosci
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China