We provide a comprehensive phenotypic characterization of loss-of-function (LoF) variants in WDFY3 based on the largest cohort reported to date (n = 32). Our findings define a monogenic disorder marked by neuropsychiatric features (including autism and ADHD), mild to moderate neurodevelopmental delay, and variable brain growth – most commonly macrocephaly and in one case reduced head circumference. To investigate the effect of WDFY3 LoF we performed knockdown (KD) in the human neuroblastoma cell…
