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Updated: May 29, 2026

Experimental Approaches for Biochemical Analysis of Glial Fibrillary Acidic Protein and Its Disease-associated Variants
Published on: November 28, 2025
An unusual presentation of juvenile Alexander disease
Maria Joana Osorio1, Sarah Risen, Gulay Alper
1Children's Hospital of Pittsburgh, Division of Child Neurology, Department of Pediatrics, University of Pittsburgh School of Medicine, PA, USA. joana.osorio@chp.edu
Abstract:
Alexander disease is a rare leukodystrophy that most often presents in infancy but also includes neonatal, juvenile, and adult variants. Juvenile Alexander disease presents primarily with bulbar symptoms between 2 and 12 years of age. The diagnosis is often suggested by the clinical course and brain magnetic resonance image pattern and then confirmed by the presence of a mutation in the glial fibrillary acidic protein gene. A young girl presented with globus sensation and magnetic resonance imaging of the brain revealed abnormalities mainly involving white matter tracts of the medulla oblongata and cerebellum. The presence of a mutation in the glial fibrillary acidic protein gene confirmed the diagnosis of juvenile Alexander disease. A high index of clinical suspicion is necessary for the diagnosis of late-onset presentations of Alexander disease.
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