Mutations cause disease with infantile onset. Metz et al (2018) suggest that disease caused by homozygous KCTD7 mutations does not have the defining features of neuronal ceroid lipofuscinosis
You can read the paper by Metz et al. here
Metz KA, Teng X, Coppens I, Lamb HM, Wagner BE, Rosenfeld JA, Chen X, Zhang Y, Kim HJ, Meadow ME, Wang TS, Haberlandt ED, Anderson GW, Leshinsky-Silver E, Bi W, Markello TC, Pratt M, Makhseed N, Garnica A, Danylchuk NR, Burrow TA, Jayakar P, McKnight D, Agadi S, Gbedawo H, Stanley C, Alber M, Prehl I, Peariso K, Ong MT, Mordekar SR, Parker MJ, Crooks D, Agrawal PB, Berry GT, Loddenkemper T, Yang Y, Maegawa GHB, Aouacheria A, Markle JG, Wohlschlegel JA, Hartman AL, Hardwick JM. KCTD7 deficiency defines a distinct neurodegenerative disorder with a conserved autophagy-lysosome defect. Ann Neurol. 2018 Nov;84(5):766-780. doi: 10.1002/ana.25351. Epub 2018 Nov 8. PMID: 30295347; PMCID: PMC6295419
mutation table to download
patient table to download