Mendelian neurodevelopmental disorder CTR9-related neurodevelopmental disorder https://github.com/monarch-initiative/mondo/issues/8489 MONDO:1040006 Any neurodevelopmental disorder in which the cause of the disease is a variation in the CTR9 gene. This disorder is characterised by varying degrees of intellectual disability, neurodevelopmental delay, hypotonia, fatigability, behavioral abnormalities including autism spectrum disorder, anxiety and aggressive behavior, cardiac anomalies, and mild facial dysmorphism. https://github.com/monarch-initiative/mondo/issues/8157