FBRSL1 and neurodevelopmental disorder: We demonstrate that FBRSL1 associates with the transcription factor Yin Yang 1 (YY1) and binds upstream of Bromodomain And PHD Finger containing 1 (BRPF1) and Lysine Acetyltransferase 6 A (KAT6A), two epigenetic regulators involved in embryonic development and linked to neurodevelopmental disorders.