Journal
FRONTIERS IN NEUROLOGY
Volume 14, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fneur.2023.1170557
Keywords
PANK2 gene; pantothenate kinase-associated neurodegeneration; whole exome sequencing; case report; review
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The patient is a 4-year-old with PKAN, presenting with developmental regression, progressive inability to walk, and limb tremors. Neuroimaging showed eye-of-the-tiger sign. Whole exome sequencing identified compound heterozygous mutations of c.1213T>G (p.Tyr405Asp) and c.1502T>A (p.Ile501Asn) in the PANK2 gene. A review of all known PANK2 variants observed in reported PKAN patients was conducted to improve understanding of genotype-phenotype associations in PKAN patients.
Pantothenate kinase-associated neurodegeneration (PKAN) is a rare genetic neurodegenerative disorder with brain iron accumulation characterized as dysarthria, spasticity, cognitive impairment, parkinsonism, and retinopathy. PKAN is caused by biallelic mutations in the mitochondrial pantothenate kinase 2 (PANK2) gene. Herein, we report a 4-year-old patient with PKAN from a Han Chinese family, who presented with developmental regression, progressive inability to walk, and limb tremors. Neuroimaging demonstrated eye-of-the-tiger sign. Whole exome sequencing (WES) identified compound heterozygous mutations of c.1213T>G (p.Tyr405Asp) and c.1502T>A (p.Ile501Asn) in PANK2 gene. In addition, a review of all known PANK2 variants observed in reported PKAN patients was conducted, to improve understanding of the genotype-phenotype associations that occur in PKAN patients.
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