Identifying Metabolic Diseases That Precipitate Neonatal Seizures

Area of Science:

• Biochemistry
• Genetics
• Neonatology

Background:

• Inborn errors of metabolism (IEMs) are a rare but critical cause of neonatal seizures.
• Diagnosing neonatal-onset metabolic conditions is challenging for clinicians.
• Newborn screening panels increasingly include IEMs, yet some remain misdiagnosed.

Purpose of the Study:

• To provide clinicians with an updated guide on IEMs associated with neonatal-onset seizures.
• To highlight specific IEMs frequently linked to neonatal epilepsy and neurocognitive damage.
• To promote improved diagnostic strategies and patient care.

Main Methods:

• Literature review of IEMs presenting with neonatal seizures.
• Focus on conditions like pyridoxine-dependent epilepsy, maple syrup urine disease, and Zellweger spectrum disorders.
• Discussion of emerging biomarkers and advancements in gene sequencing.

Main Results:

• Certain IEMs, including pyridoxine-dependent epilepsy, maple syrup urine disease, and Zellweger spectrum disorders, are strongly associated with neonatal epilepsy.
• These conditions are often misdiagnosed despite their significant impact.
• Advances in diagnostics are improving early identification strategies.

Conclusions:

• IEMs are an essential consideration in the differential diagnosis of neonatal seizures.
• Early and accurate diagnosis of IEMs is vital for preventing neurocognitive injury.
• An updated clinical guide can enhance the identification and management of these rare conditions.