P358: Multimodal analysis of language regression using genome sequencing, neuroimaging and neurophysiologic findings in a cohort of minimal-to-nonverbal autistic children - Suma Shankar; Charles Sadle; Ellen Osborne; Aditya Krishnan; Karol Cichewicz; Xinzhou Wang; Celia Chang; Prabhu Shankar; John McPherson (Genetics in Medicine Open)