A child with tuberous sclerosis having Novel NRAS gene mutation

Area of Science:

• Genetics
• Neurology
• Pediatrics

Background:

• Tuberous sclerosis (TS) is a rare autosomal-dominant genetic disorder.
• Mutations in TSC1 or TSC2 genes cause hamartomas in multiple organs.
• TS affects the brain, heart, kidneys, skin, lungs, and liver.

Observation:

• An 11-month-old boy presented with epilepsy and hypomelanotic macules.
• Brain MRI revealed cortical tubers and subependymal nodules, confirming TS diagnosis.
• Genetic analysis was performed using Whole Exome Sequencing.

Findings:

• A novel genetic mutation was identified in the NRAS gene.
• This mutation is suggestive of Noonan syndrome-6.
• The findings expand the genetic landscape of neurocutaneous disorders.

Implications:

• This case highlights the importance of comprehensive genetic analysis in TS diagnosis.
• The discovery may lead to new diagnostic approaches for related genetic syndromes.
• Further research is needed to understand the NRAS mutation's role in TS and Noonan syndrome-6.