C5orf15 (Chromosome 5 Open Reading Frame 15, also known as KCT2) is a Protein Coding gene. KCT2 gene maps to human chromosome 5q31.1 and is conserved in human, chimpanzee, cow, rat, and chicken. KCT2 is a 265 amino acid single-pass type I membrane protein that is widely expressed in the thyroid, kidney, and other tissues. Chromosome 5 is associated with Cockayne syndrome through the ERCC8 gene and familial adenomatous polyposis through the adenomatous polyposis coli (APC) tumor suppressor gene. Chromosome 5 contains 181 million base pairs and comprises nearly 6% of the human genome. Diseases associated with C5orf15 include Arrhythmogenic Right Ventricular Dysplasia, Familial, 5, and Amyotrophic Lateral Sclerosis 11.