SMN1型
多重连接依赖探针扩增
高分辨率熔体
脊髓性肌萎缩
实时聚合酶链反应
形状记忆合金*
多路复用
生物
人口
分子生物学
聚合酶链反应
外显子
遗传学
基因
医学
计算机科学
算法
环境卫生
作者
Ying Xu,Tingting Song,Xiaozhou Wang,Jiao Zheng,Yu Li,Fenfen Guo,Yuanfeng Li,Zijian Guo,Yaling Dou,Yu Wang,Ye Zhao,Hong Yang
标识
DOI:10.1016/j.braindev.2022.03.011
摘要
Spinal muscular atrophy (SMA) is a neuromuscular disease mainly caused by the absence of both copies of the survival motor neuron 1 (SMN1) gene. Multiple regions recommended population-wide SMA screening to quantify the copy number of SMN1. SMN1 diagnostic assays for the simplified procedure, high sensitivity, and throughput continue to be needed.Real-time PCR with high-resolution melting for the quantifying of the SMN1 gene exon 7 copies and exon 8 copies were established and confirmed by multiplex ligation-dependent probe amplification (MLPA). The diagnosis of 2563 individuals, including SMA patients, suspected cases, and the general population, was tested by real-time PCR. The results were compared with the gold standard test MLPA.In this study, the homozygous and heterozygous deletions were detected by real-time PCR with a high-resolution melting method with an incidence of 10.18% and 2.26%, respectively. In addition, the R-value distribution (P > 0.05) among 8 replicates and the coefficient of variation (CV < 0.003) suggested that the real-time PCR screening test had high reproducibility. High concordance was obtained between real-time PCR with high-resolution melting and MLPA.The real-time PCR based on high-resolution melting provides a sensitive and high-throughput approach to large-scale SMA carrier screening with low cost and labor.
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