Children with ARHGEF9 syndrome often face challenges in their early development. Most show some degree of developmental delay, meaning they may take longer to reach milestones like sitting up, walking, or talking. As they grow, many children experience learning differences or intellectual disability, which can range from mild to more significant.
Seizures or epilepsy are common in children with this condition, affecting the majority. The chances of having epilepsy are higher in children with more severe learning challenges. Even in children who don’t have seizures, their brain activity may show some differences on EEG testing—especially slower brainwave patterns, which are typical in this condition.
Sleep can also be a struggle, with many children experiencing difficulties falling or staying asleep. In addition, behavioral differences are often part of the picture. Some children may show traits that resemble autism, such as social communication differences or repetitive behaviors. Others may have high levels of anxiety or seem very active and impulsive.
Each child is unique, and the way these features appear can vary from one child to another. But understanding these patterns can help families work closely with care teams to provide the right support, therapies, and interventions to help their child thrive.
ARHGEF9