Abstract
The spinocerebellar ataxias (SCAs) are a clinically and genetically heterogeneous group of neurodegenerative diseases. Researchers have recently found that SCA type 11 (SCA11) is associated with mutations in the TTBK2 gene. In our previous work, we performed mutation detection in SCA1, 2, 3, 6, 7, 8, 10, 12, 17 and dentatorubral-pallidoluysian atrophy gene in Chinese SCA patients, but the genes responsible for approximately 40% of our patients have not yet been identified. To investigate the frequency of SCA11 in Chinese SCA patients, we examined the TTBK2 gene in 68 unrelated probands diagnosed with dominantly inherited ataxia using the denaturing high-performance liquid chromatography method. All analyzed samples displayed the normal elution profile, which denoted that no disease-related mutation was identified. We provided the evidence that SCA11 is a rare form of ataxia in China.
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