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Results of the First GNAO1-Related Neurodevelopmental Disorders Caregiver Survey.

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BACKGROUND We sought to expand our knowledge of the clinical spectrum of GNAO1-related neurodevelopmental disorders through a caregiver survey reviewing medical and developmental history and development of epilepsy and movement… Click to show full abstract

BACKGROUND We sought to expand our knowledge of the clinical spectrum of GNAO1-related neurodevelopmental disorders through a caregiver survey reviewing medical and developmental history and development of epilepsy and movement disorders. METHODS An online survey was administered to caregivers of individuals diagnosed with GNAO1 pathogenic variants. RESULTS Eighty-two surveys were completed. Nearly all (99%) reported the first symptom of concern by age one year with the most frequently identified concerns as hypotonia (68%), developmental delay (67%), seizures (29%), difficulty feeding (23%), and abnormal movements (20%). All caregivers reported developmental delays with a spectrum of severity. Movement disorders (76%) were more common than epilepsy (52%), although 33% reported both. The onset of seizures tended to be earlier than abnormal movements. Nearly half (48%) of those with any seizures, reported they were no longer having recurrent seizures. No single most effective medication for movement disorders or epilepsy was noted. Ten participants have had deep brain stimulator for their movement disorder, and all indicated positive effects. CONCLUSIONS GNAO1-related neurodevelopmental disorders most often present within the first year of life with nonspecific symptoms of hypotonia or developmental delay. Although associated epilepsy and movement disorders can be severe, GNAO1-associated epilepsy may not always be medically refractory or lifelong.

Keywords: movement; survey; gnao1 related; disorders caregiver; related neurodevelopmental; neurodevelopmental disorders

Journal Title: Pediatric neurology
Year Published: 2021

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