has material basis in germline mutation in DDX17 Mendelian neurodevelopmental disorder DDX17-related neurodevelopmental disorder https://github.com/monarch-initiative/mondo/issues/9633 A neurodevelopmental disorder caused by variation in the DDX17 gene. This disorder is characterised by global developmental, motor, language and speech delay, and intellectual disability. Other phenotypic features commonly reported include hypotonia, dysmorphic facial features, behavioural abnormalities, mainly attention deficit hyperactivity disorder, and brain MRI abnormalities. MONDO:0700368