Related Experiment Video
Updated: Jan 17, 2026

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
Published on: June 6, 2025
Late-onset Vitamin B6-dependent epilepsy caused by compound heterozygous pathogenic PLPBP variants
Sadao Nakamura1, Yasutsugu Chinen2, Hirotaka Minema3
1Department of Child Health and Welfare (Pediatrics), Graduate School of Medicine, University of the Ryukyus, Nishihara, Okinawa, Japan.
None:
Evidence has shown that pathogenic variants of the PLPBP gene can cause vitamin B6-dependent epilepsy, a condition characterized by neonatal-onset seizures that respond to vitamin B6 supplementation. In this paper, we report a case of vitamin B6-dependent epilepsy in a Japanese girl caused by compound heterozygous variants in PLPBP, NM_007198.4: c.275A > G (p. H92R) (novel)/c.319G > A (p. A107T) (reported), which developed when the patient was just 8 months old but was diagnosed at 10 years of age. Even after the neonatal period, vitamin B6-dependent epilepsy should be considered as a differential diagnosis of refractory epilepsy, with genetic analysis being useful for its diagnosis and treatment.
More Related Videos
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
06:41In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
Related Concept Videos
Antiepileptic Drugs: GABAergic Pathway Potentiators
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for...
Pedigree Analysis
Inborn Errors of Metabolism
Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
Lysosomal Hydrolases
Epilepsy and Seizures: Overview
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...