Chloride channel protein 2 is a protein that in humans is encoded by the CLCN2 gene. Mutations of this gene have been found to cause leukoencephalopathy and Idiopathic generalised epilepsy, although the latter claim has been disputed. From Wikipedia
University of Geneva researchers identify CLCN2 as the single gene responsible for diverse corn snake morphs, uncovering its role in chromatophore behavior and bioelectric signaling.
