“…ADNP syndrome, also known as Helsmoortel-Van der Aa syndrome, is a rare disorder in which sequence variants in the activity-dependent neuroprotective protein (ADNP) gene cause autism spectrum disorder (ASD), intellectual disability, sensory reactivity symptoms, facial dysmorphisms, and an array of other manifestations, including increased risk of seizures, cardiac defects, musculoskeletal issues, and gastrointestinal symptoms [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. ADNP syndrome is among the most common single-gene causes of ASD, estimated to account for 0.17% of all cases [ 4 ].…”