• Zhejiang Da Xue Xue Bao Yi Xue Ban · Jun 2019

    [Application of single nucleotide polymorphism microarray in clinical diagnosis of intellectual disability or retardation].

    • Junjie Hu, Yeqing Qian, Yixi Sun, Jialing Yu, Yuqin Luo, and Minyue Dong.
    • Key Laboratory of Reproductive Genetics, Ministry of Education, Department of Reproductive Genetics, Women's Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China.
    • Zhejiang Da Xue Xue Bao Yi Xue Ban. 2019 Jun 25; 48 (4): 420-428.

    ObjectiveTo assess the clinical application of single nucleotide polymorphism microarray (SNP array) in patients with intellectual disability/developmental delay(ID/DD).MethodsSNP array was performed to detect genome-wide DNA copy number variants (CNVs) for 145 patients with ID/DD in Women's Hospital, Zhejiang University School of Medicine from January 2013 to June 2018. The CNVs were analyzed by CHAS software and related databases.ResultsAmong 145 patients, pathogenic chromosomal abnormalities were detected in 32 cases, including 26 cases of pathogenic CNVs and 6 cases of likely pathogenic CNVs. Meanwhile, 18 cases of uncertain clinical significance and 14 cases of likely benign were identified, no significant abnormalities were found in 81 cases (including benign).ConclusionsSNP array is effective for detecting chromosomal abnormalities in patients with ID/DD with high efficiency and resolution.

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