Disruption of sonic hedgehog signaling in Ellis-van Creveld dwarfism confers protection against bipolar affective disorder.
Ginns EI, Galdzicka M, Elston RC, Song YE, Paul SM, Egeland JA. Disruption of sonic hedgehog signaling in Ellis-van Creveld dwarfism confers protection against bipolar affective disorder. Mol Psychiatry. 2015 Oct; 20(10):1212-8.