Neonate with developmental and epileptic encephalopathy 81 (DEE81): lessons learnt and future implications

Area of Science:

• Genetics and Neurology
• Rare Diseases
• Pediatric Epilepsy

Background:

• Developmental and epileptic encephalopathy 81 (DEE81) is a rare condition with challenging diagnosis and management.
• Neonates with early-onset refractory seizures require thorough etiological investigation.

Purpose of the Study:

• To report a case of DEE81 diagnosed in a neonate.
• To emphasize the role of advanced genomic testing in identifying genetic causes of early-onset epilepsy.
• To highlight the importance of personalized management strategies guided by genetic findings.

Main Methods:

• Clinical presentation of refractory focal seizures in a neonate.
• Administration of multiple antiepileptic drugs without seizure control.
• Advanced genomic testing to identify the underlying genetic variant.

Main Results:

• Diagnosis of DEE81 confirmed by identifying a homozygous nonsense variant in the DMXL2 gene.
• The identified genetic variant was directly linked to the patient's severe seizure phenotype.

Conclusions:

• Genetic analysis is crucial for diagnosing rare conditions like DEE81 in neonates with early-onset seizures.
• Targeted genetic testing facilitates personalized treatment approaches for DEE81.
• Further research and collaboration are needed to improve diagnosis and treatment for DEE81.