References: 1. Schulz A, Kohlschütter A, Mink J, Simonati A, Williams R. NCL diseases – clinical perspectives. Biochimica et Biophysica Acta. 2013;1832:1801–1806.
2. Schulz A, Cohen-Pfeffer JL, Crystal R, et al. Neuronal ceroid lipofuscinosis-2 (CLN2) disorder, a type of Batten disease caused by TPP1 enzyme deficiency: current knowledge of the natural history from international experts. Poster session presented at: The Society for the Study of Inborn Errors of Metabolism (SSIEM) Annual Symposium; September 2015; Lyon, France. 3. Chang M, Cooper JD, Davidson BL, et al. CLN2. In: Mole S, Williams R, and Goebel H, eds. The neuronal ceroid lipofuscinoses (Batten Disease). 2nd ed. Oxford, United Kingdom: Oxford University Press; 2011:80-109. 4. Pérez-Poyato MS, Marfa MP, Abizanda IF, et al. Late infantile neuronal ceroid lipofuscinosis: mutations in the CLN2 gene and clinical course in Spanish patients. J Child Neurol. 2013;28:470-478. 5.Nickel M, Simonati A, Jacoby D, et al. Disease characteristics and progression in patients with late-infantile neuronal ceroid lipofuscinosis type 2 (CLN2) disease: an observational cohort study. Lancet Child Adolesc Health. 2018 Aug;2(8):582-590. doi: 10.1016/S2352-4642(18)30179-2. 6. Åndell E, Tomson T, Carlsson S, et al. The incidence of unprovoked seizures and occurrence of neurodevelopmental comordities in children at the time of their first epileptic seizure and during the subsequent six months. Epilepsy Res. 2015;113:140-150. 7. Albert DV, Yin H, De Los Reyes EC, Vidaurre J. Unique Characteristics of the photoparoxysmal response in patients with neuronal ceroid lipofuscinosis type 2: can EEG be a biomarker? J Child Neurol. 2016;31:1475-1482. 8. Mole SE, Williams RE, and Goebel HH. Correlations between genotype, ultrastructural morphology and clinical phenotype in the neuronal ceroid lipofuscinoses. Neurogenetics. 2005;6:107-126.