DLX1 and neurodevelopmental disorder: Conversely, transcripts encoding the LIM homeobox 8 (Lhx8), which is involved in neuronal differentiation, the distal-less homeobox 1(Dlx1), which may regulate inhibitory neurons in the brain, and the forkhead box G1 (Foxg1), which is responsible for neurodevelopmental disorders, were absent in the brainstem.