References: 1. Mole SE et al. Correlations between genotype, ultrastructural morphology and clinical phenotype in the neuronal ceroid lipofuscinoses. Neurogenetics. 2005;6:107-126. 2. Chang M 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. 3. Schulz A et al. NCL diseases – clinical perspectives. Biochimica et Biophysica Acta. 2013;1832:1801–1806. 4. Pérez-Poyato 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. Worgall S et al. Treatment of late infantile neuronal ceroid lipofuscinosis by CNS administration of a serotype 2 adeno-associated virus expressing CLN2 cDNA. Hum Gene Ther. 2008;19:463-474. 6. Steinfeld R et al. Late infantile neuronal ceroid lipofuscinosis: quantitative description of the clinical course in patients with CLN2 mutations. Am J Med Genet. 2002;112:347-354. 7. Nickel M et al. Natural history of CLN2 disease: quantitative assessment of disease characteristics and rate of progression. Poster session presented at: The 12th Annual WORLD Symposium; February – March 2016; San Diego, CA. 8. Schulz A 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. 9. Mole SE and Williams RE. Neuronal ceroid-lipofuscinoses. 2001 Oct 10 [Updated 2013 Aug 1]. In: Pagon RA, Adam MP, Ardinger HH, et al., eds. GeneReviews® [internet]. Seattle, WA: University of Washington; 1993-2016.