Two Novel Mutations in the C-Terminal Region of Centrosomal Protein 290 (CEP290) Result in Classic Joubert Syndrome
2015
Joubert syndrome is a neurologic disorder with a pathognomonic “molar tooth sign” on brain imaging. The purpose of this study was to identify potential mutations in a Chinese patient with Joubert syndrome by targeted massively parallel sequencing. Taking advantage of high-throughput DNA sequencing technologies, 18 Joubert-causing genes of a Chinese patient with classic Joubert syndrome were sequenced at a time, and 2 novel variants in the CEP290 gene (c.7323_7327delAGAAG and c.6012-2A>G) were identified in this patient. Sanger validation showed that 2 variants were inherited from each parents, respectively. Both variants are located in the C-terminal region of the CEP290 protein and are predicted to be deleterious. The results support that the combination of targeted genes enrichment and next-generation sequencing is valuable molecular diagnostic tool and suitable for clinical application.
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