Neuronal Ceroid Lipofuscinosis (NCL) is a wide array of degenerative neurological conditions which cause progressive nerve damage, resulting in a loss of mobility and vision, and ultimately death. This variant, Neuronal Ceroid Lipofuscinosis type 8 (NCL8), occurs in the Australian Shepherd and German Shorthaired Pointer. It is caused by a recessive mutation to the gene CLN8. Other breeds that carry mutations for NCL8 include the English Setter, Alpenländische Dachsbracke, and Saluki.