MFSD8 and neuronal ceroid lipofuscinosis: Although a number of cases of NCL have been reported in cats based on disease phenotype (Nakayama et al. 1993; Bildfell et al. 1995; Kuwamura et al. 2009; Chalkley et al. 2014), only one feline NCL-causing variant has been identified (a frameshift in MFSD8 associated with CLN7 disease) (Guevar et al. 2019).