Manchester Scientists Uncover Common Genetic Cause of Childhood Epilepsy

In March 2026, a study published in Nature Genetics revealed a newly identified neurodevelopmental disorder, which is now recognised as one of the leading genetic causes of childhood epilepsy.

This condition, known as ‘recessive RNU2‑2‑related neurodevelopmental disorder’, is surprisingly common. It accounts for roughly 10% of all genetic NDD cases where the condition is inherited from both parents.

Among those who made the discovery are scientists from Manchester University NHS Foundation Trust and the University of Manchester, who have so far confirmed the condition in 84 children and young people worldwide.

However, it is estimated that thousands more remain undiagnosed.

Living with an undiagnosed condition can be incredibly unsettling, especially for parents who are caring for young children suffering from its various symptoms. Hopefully, now that this disorder has been widely recognised, more effort can go into diagnosing it.

The research centred on a small gene called RNU2-2. Because this gene is ‘non-coding’, meaning it doesn’t produce proteins like most genes, it was previously considered ‘inactive’ and therefore overlooked by many scientists.

However, we now know it plays a vital role in helping the body process other genes. Mutations of this gene disrupt the brain’s ability to process other key proteins during development, leading to the onset of the neurodevelopmental disorder.

The study mentioned earlier involved the data of over 67,000 individuals. The researchers compared 14,805 NDD patients with 52,861 healthy individuals. By analysing this vast dataset, researchers were able to spot rare genetic patterns that would simply be missed in a smaller-scale study.

Most common neurodevelopmental disorders stem from a single faulty gene; however, the team’s analysis of both dominant and recessive scenarios revealed this specific condition as recessive.

This means a child will only be affected if both parents carry the mutated gene. In cases where both parents are carriers of the faulty gene, there is a 25% chance the child will inherit the disorder.

Recessive RNU2‑2‑related neurodevelopmental disorder can cause significant developmental delays, learning disabilities, and epilepsy. While epilepsy affects people differently, seizures commonly involve sudden jerking and shaking, stiffness, and even loss of consciousness. One of the first diagnosed cases of Recessive RNU2‑2‑related neurodevelopmental disorder involved a young girl who suffered a shocking 100 to 200 seizures every day. 

Often, seizures can be controlled with medication; however, seizures associated with recessive RNU2‑2‑related neurodevelopmental disorder are typically difficult to treat.

Managing the risks associated with this condition can be challenging, but as research continues and our understanding of it develops, we can significantly reduce those risks.
Related: Understanding and Managing The Risks Of Epilepsy

For families of children with undiagnosed NDDs, we hope this discovery will bring the much-needed relief of finally having a clear cause and understanding of their child’s condition. While a cure has not yet been found, this breakthrough marks a significant milestone in medical genetics and is an important first step towards finding a solution.

Moving forward, the researchers at Manchester will continue their research on this condition, potentially exploring gene replacement therapies or RNA-based treatments to prevent it in the future. Already, their discovery has opened the way for early diagnosis of the condition, accurate genetic counselling, and prenatal screening.

It’s encouraging to see so much research and effort go into understanding conditions like epilepsy.

Recent months have brought numerous exciting developments in the treatment and management of epilepsy, such as minimally invasive surgeries and new medications.

For more information on these developments, please refer to our blog, where we strive to keep you updated on all things relating to epilepsy. You may also find the following resources helpful if you or somebody you know is living with epilepsy:

• The Epilepsy Society is a UK-based charity that focuses much effort on researching epilepsy, while providing advocacy and care for those suffering from it. 
• The Epilepsy Foundation has been funding epilepsy research and promoting awareness of it for over 50 years. 
• Young Epilepsy works with children and young people to help them understand their condition and ensure they receive the care they deserve.