Novel neurofibromatosis type 2 mutation presenting with status epilepticus

Area of Science:

• Genetics
• Neurology
• Oncology

Background:

• Neurofibromatosis type 2 (NF2) is an inherited disorder caused by mutations in the NF2 tumor suppressor gene, leading to central nervous system tumors.
• While NF2 is associated with cerebral lesions and seizures, epilepsy is an uncommon manifestation.

Observation:

• This report describes an adult NF2 patient whose initial symptoms were status epilepticus, a rare presentation for this condition.
• A novel mutation, c.428_430delCTTdel, was identified in the NF2 gene, affecting the FERM domain crucial for tumor suppression.

Findings:

• The identified NF2 mutation is predicted to cause significant structural changes in the FERM domain.
• This structural perturbation is expected to impair the protein's tumor suppressor activity.

Implications:

• This case expands the clinical spectrum of NF2, emphasizing epilepsy as a potential early symptom.
• Understanding the impact of this novel mutation on merlin protein function may offer insights into NF2 pathogenesis and therapeutic strategies.