Globoid cell leukodystrophy (Krabbe disease)

Area of Science:

• Genetics and rare diseases
• Neuroscience and neurodegenerative disorders
• Metabolic disorders

Background:

• Globoid cell leukodystrophy (Krabbe disease) is a rare, fatal genetic disorder.
• It results from pathogenic variants in the GALC gene, leading to toxic metabolite accumulation.
• This causes myelin destruction and the formation of characteristic globoid cells.

Purpose of the Study:

• To present a case of infantile Krabbe disease diagnosed via whole exome sequencing.
• To highlight the clinical presentation and diagnostic challenges.
• To discuss current therapeutic limitations and future directions.

Main Methods:

• Clinical case presentation of a 17-month-old girl with developmental delay and seizures.
• Neurological examination and cranial MRI to assess white matter abnormalities.
• Whole exome sequencing to identify pathogenic variants in the GALC gene.

Main Results:

• The patient exhibited severe neurological symptoms including seizures, hypotonia, and irritability.
• Cranial MRI showed extensive white matter abnormalities.
• Genetic analysis confirmed biallelic pathogenic variants in the GALC gene, diagnosing Krabbe disease.

Conclusions:

• Infantile Krabbe disease is a rapidly progressive and severe neurodegenerative disorder.
• Hematopoietic stem cell transplantation (HSCT) is the only approved therapy but is most effective in early stages.
• Gene therapy offers potential future treatment avenues for this devastating condition.