Publications by authors named "Hsiu-Fen Lee"

Objective: To analyze cerebellar atrophy in genetic epileptic encephalopathies (EEs).

Methods: This research included a retrospective cohort study conducted from January 2016 to December 2023 and a systematic review on cerebellar atrophy in genetic EEs. Pediatric individuals who were diagnosed with EEs based on electroclinical features, carried causative gene variants, and exhibited cerebellar atrophy were recruited.

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Objective: To resolve unsolved whole-genome sequencing (WGS) data in individuals with paediatric neurological disorders.

Design: A cohort study method using updated bioinformatic tools, new analysis targets, clinical information and literature databases was employed to reanalyse existing unsolved genome data.

Participants: From January 2016 to September 2023, a total of 615 individuals who aged under 18 years old, exhibited neurological disorders and received singleton WGS were recruited.

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Biallelic SHQ1 variant-related neurodevelopmental disorder is extremely rare. To date, only six affected individuals, from four families, have been reported. Here, we report eight individuals, from seven unrelated families, who exhibited neurodevelopmental disorder and/or dystonia, received whole-genome sequencing, and had inherited biallelic SHQ1 variants.

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Background: Anti-N-methyl-D-aspartate (NMDA) receptor encephalitis is the most common autoimmune encephalitis in children. There is a high probability of recovery if treated promptly. We aimed to analyze the clinical features and long-term outcomes of pediatric patients with anti-NMDA receptor encephalitis.

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Background: This work aims to describe the clinico-radiological phenotype of UBTF c.628G>A (p.Glu210Lys) pathogenic variant-related neurodegeneration in childhood.

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Objective: To describe intrafamilial phenotypic variability in rare TBC1D24-TLDc homozygous pathogenic variant-related developmental and epileptic encephalopathy (DEE).

Methods: Four individuals from two unrelated families who had been diagnosed with DEE caused by TBC1D24-TLDc homozygous c.1499C>T (p.

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Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome, a maternally inherited mitochondrial disorder, is characterized by its genetic, biochemical and clinical complexity. The most common mutation associated with MELAS syndrome is the mtDNA A3243G mutation in the MT-TL1 gene encoding the mitochondrial tRNA-leu(UUR), which results in impaired mitochondrial translation and protein synthesis involving the mitochondrial electron transport chain complex subunits, leading to impaired mitochondrial energy production. Angiopathy, either alone or in combination with nitric oxide (NO) deficiency, further contributes to multi-organ involvement in MELAS syndrome.

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Background: To describe the genotype-phenotype dissociation in two Taiwanese patients with molybdenum cofactor deficiency (MoCoD) caused by gene mutations.

Patient Description: Patient 1 exhibited early-onset neurological symptoms soon after birth, followed by subsequent myoclonic seizures and movement disorder. The brain magnetic resonance imaging (MRI) showed diffuse brain injury with cystic encephalomalacia along with bilateral globus pallidi involvement, hypoplasia of corpus callosum, and cerebellar atrophy.

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Acute heart failure (AHF) is the major cause of death in children with severe enterovirus 71 (EV71) infection. This study aimed to report our clinical experience with EV71-related AHF, as well as to discuss its pathogenesis and relationship to Takotsubo syndrome (TTS). A total 27 children with EV71-related AHF between 1998 and 2018 were studied.

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Perampanel is a once-daily, first-in-class AMPA receptor antagonist approved for the treatment of epilepsy and exhibits broad-spectrum efficacy in a range of seizure types when used as both monotherapy and adjunctive therapy. Clinical studies and real-world evidence have demonstrated the advantages of initiating perampanel at low doses and utilizing a slow titration strategy. Initiating perampanel at an early stage has also been shown to be associated with better patient outcomes.

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Article Synopsis
  • - Epileptic encephalopathy is a severe form of childhood epilepsy that can lead to significant developmental delays and can be fatal, often linked to mutations in the SCN8A gene affecting voltage-gated sodium channels.
  • - A case study of a 5-month-old girl with SCN8A encephalopathy revealed a novel mutation and highlighted that traditional diagnostic methods like EEG and MRI were normal, suggesting the need for genetic sequencing for accurate diagnosis.
  • - While phenytoin is typically used as a last-resort treatment, this patient experienced improvement in seizures when treated with oxcarbazepine, indicating potential alternatives for managing this condition.
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Risk of sudden unexpected death in epilepsy (SUDEP) in children is influenced by different factors such as etiology, seizure type and frequency, treatment, and environment. A greater severity of epilepsy, in terms of seizure frequency, seizures type, especially with nocturnal generalized tonic-clonic seizures (GTCS), and resistance to anti-seizure medication are predisposing factors to SUDEP. Potential mechanisms of SUDEP might involve respiratory, cardiovascular, and central autonomic dysfunctions, either combined or in isolation.

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Aim: To investigate the diagnostic yield and treatment impact of whole-genome sequencing (WGS) in patients with paediatric neurological disorders.

Method: From January 2016 to December 2019, paediatric patients who had suspected genetic neurological disorders were assessed using WGS. The phenotypes of eligible patients were divided into four groups: patients with neurodevelopmental disorders; patients with epilepsy; patients with neuromuscular disorders; and patients with movement disorders.

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Background: The aim of this study was to describe the electroclinical variability of four Taiwanese patients with pyridoxine-dependent epilepsy (PDE) caused by ALDH7A1 gene mutations.

Methods: Demographic data, case histories, clinical seizure patterns, EEG features, neuroimaging findings, ALDH7A1 gene mutations, treatments, and neurodevelopmental outcomes of the four patients were collected and analyzed.

Results: The four patients exhibited the first symptom between the ages of 6 days and 11 months.

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Hypercatecholaminemia-related heart failure has been proposed as the main cause of enterovirus A71-related (EV-A71) early mortality. The purpose of this study was to measure urine catecholamine concentrations in severe EV-A71-infected children. A total of 35 children, aged 2.

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Background: In many parts of eastern Asia, rice is a dietary staple and therefore the ketogenic diet (KD) can be difficult to administer. The aim of this study was to assess the long-term effectiveness and tolerability of the classical KD using a 2:1 ratio of fat to protein plus net carbohydrates, which is lower than the ratios of 3:1 or 4:1 typically used in classical KD for intractable pediatric epilepsy.

Materials: In this prospective study, cooking oils rich in polyunsaturated fatty acid or omega 3 fatty acids, such as olive oil, camellia oil, linseed oil, grape seed oil, and/or perilla oil were used to formulate a classical KD with a 2:1 ratio for infants and children diagnosed with medically intractable epilepsy from April 2002 to April 2018.

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Aromatic l-amino acid decarboxylase deficiency (AADCD), attributed to mutations in the dopa decarboxylase (DDC) gene, is a rare neurometabolic disease resulting from a defect in the biosynthesis of dopamine and serotonin. The DDC c.714+4A>T mutation is the most prevalent mutation among patients with AADCD, and is also a founder mutation among Taiwanese patients.

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Purpose: To understand the long-term neurological outcomes and chronological changes of brain MRIs in patients with febrile infection-related epilepsy syndrome (FIRES).

Methods: From December 2000 to May 2016, 29 patients diagnosed with FIRES were collected retrospectively. The demographic distribution, clinical manifestations, neuroimaging findings, and treatment methodology were described.

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Background: Isolated sulfite oxidase deficiency (ISOD) is a very rare autosomal recessive inherited neurometabolic disease. The most striking postnatal neuroimaging finding is multicystic encephalomalacia, which occurs rapidly within days to weeks after birth and mimics severe hypoxic-ischemic encephalopathy. The aim of this study was to describe the prenatal neuroimaging features in a neonate and a fetus diagnosed with ISOD.

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Introduction: Hepatosplenomegaly is often present in infantile Sanshoff disease. However, cardiac involvement is extremely uncommon.

Case Report: We describe a 14-month-old female baby who exhibited mitral regurgitation and cardiomegaly at the age of 2months, dilation of the left atrium and left ventricle at age of 6months, followed by regression of developmental milestones after an episode of minor infection at age of 14months.

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Epilepsy is a common neurological disorder worldwide and anti-epileptic drugs (AEDs) are always the first choice for treatment. However, more than 50% of patients with epilepsy who take AEDs have reported bone abnormalities. Cytochrome P450 (CYP450) isoenzymes are induced by AEDs, especially the classical AEDs, such as benzodiazepines (BZDs), carbamazepine (CBZ), phenytoin (PT), phenobarbital (PB), and valproic acid (VPA).

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Purpose: The aim of this study is to describe epileptic seizures in patients with primary intracranial sarcomas.

Methods: We report a 17-year-old girl diagnosed with primary high-grade intracranial sarcoma with initial clinical manifestation of nonconvulsive status epilepticus. Literature reports between 2000 and 2014, relevant to primary intracranial sarcomas in children, were reviewed.

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Neurodegenerative diseases (NDs) are among the most feared of the disorders that afflict humankind for the lack of specific diagnostic tests and effective treatments. Understanding the molecular, cellular, biochemical changes of NDs may hold therapeutic promise against debilitating central nerve system (CNS) disorders. In the present review, we summarized the clinical presentations and biology backgrounds of NDs, including Parkinson's disease (PD), Huntington's disease (HD), and Alzheimer's disease (AD) and explored the role of molecular mechanisms, including dys-regulation of epigenetic control mechanisms, Ataxia-telangiectasia-mutated protein kinase (ATM), and neuroinflammation in the pathogenesis of NDs.

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Background: This study was conducted to describe the clinical and genetic features of patients with late infantile metachromatic leukodystrophy.

Methods: Clinical and genetic manifestations of five Taiwanese patients with late infantile metachromatic leukodystrophy from January 2003 to April 2014 were reviewed. The genetic features of such patients reported in Asian countries during a period of 20 years were also analyzed.

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