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lüll Identification of two novel null variants in CLN8 by targeted next-generation sequencing: first report of a Chinese patient with neuronal ceroid lipofuscinosis due to CLN8 variants Gao Z; Xie H; Jiang Q; Wu N; Chen X; Chen QBMC Med Genet 2018[Feb]; 19 (1): 21BACKGROUND: Neuronal ceroid lipofuscinoses (NCLs) are one of the most frequent childhood-onset neurodegenerative pathologies characterized by seizures, progressive cognitive decline, motor impairment and loss of vision. For the past two decades, more than 430 variants in 13 candidate genes have been identified in the affected patients. Most of the variants were almost exclusively reported in Western patients, and very little clinical and genetic information was available for Chinese patients. CASE PRESENTATION: We report a Chinese boy whose clinical phenotypes were suspected to be NCL, including intractable epilepsy, cognitive and motor decline and progressive vision loss. Using targeted next-generation sequencing, two novel null variants in CLN8 (c.298C > T, p.Gln100Ter; c.551G > A, p.Trp184Ter) were detected in this patient in trans model. These two variants were interpreted as pathogenic according to the variant guidelines of the American College of Medical Genetics and Genomics. CONCLUSIONS: This is the first case report of NCL due to CLN8 variants in China. Our findings expand the variant diversity of CLN8 and demonstrate the tremendous diagnosis value of targeted next-generation sequencing for pediatric NCLs.|*High-Throughput Nucleotide Sequencing[MESH]|Amino Acid Sequence[MESH]|Asian People/genetics[MESH]|Child[MESH]|China[MESH]|Genetic Variation[MESH]|Humans[MESH]|Male[MESH]|Membrane Proteins/*genetics[MESH]|Neuronal Ceroid-Lipofuscinoses/*diagnostic imaging/*genetics[MESH]|Sequence Analysis, DNA[MESH] |