2021,
Genes.
DOI:
10.3390/genes12040478
Performance of Cell-Free DNA Screening for Fetal Common Aneuploidies and Sex Chromosomal Abnormalities: A Prospective Study from a Less Developed Autonomous Region in Mainland China
Yunli Lai, Xiaofan Zhu, Sheng He, Zirui Dong, Yanqing Tang, Fuben Xu, Yun Chen, Lintao Meng, Yuli Tao, Shang Yi, Jiasun Su, Hongqian Huang, Jingsi Luo, Tak Yeung Leung, Hongwei Wei
Abstract:
To evaluate the performance of noninvasive prenatal screening (NIPS) in the detection of common aneuploidies in a population-based study, a total of 86,262 single pregnancies referred for NIPS were prospectively recruited. Among 86,193 pregnancies with reportable results, follow-up was successfully conducted in 1160 fetuses reported with a high-risk result by NIPS and 82,511 cases (95.7%) with a low-risk result. The screen-positive rate (SPR) of common aneuploidies and sex chromosome abnormalities (SCAs) provided by NIPS were 0.7% (586/83,671) and 0.6% (505/83,671), respectively. The positive predictive values (PPVs) for Trisomy 21, Trisomy 18, Trisomy 13 and SCAs were calculated as 89.7%, 84.0%, 52.6% and 38.0%, respectively. In addition, less rare chromosomal abnormalities, including copy number variants (CNVs), were detected, compared with those reported by NIPS with higher read-depth. Among these rare abnormalities, only 23.2% (13/56) were confirmed by prenatal diagnosis. In total, four common trisomy cases were found to be false negative, resulting in a rate of 0.48/10,000 (4/83,671). In summary, this study conducted in an underdeveloped region with limited support for the new technology development and lack of cost-effective prenatal testing demonstrates the importance of implementing routine aneuploidy screening in the public sector for providing early detection and precise prognostic information.
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2023-09-30 19:16:00
半面阳光:
#paper DOI：https://doi.org/10.3390/genes12040478，Genes，2021，Performance of Cell-Free DNA Screening for Fetal Common Aneuploidies and Sex Chromosomal Abnormalities:A Prospective Study from a Less Developed Autonomous Region in Mainland China. 拓展的NIPT检测，即除了检测21,18和13三条常见染色体三体异常之外，拓展到检测性染色体、其他常染色体的检测，乃至一些拷贝数异常的检测。这篇文章收集了86262例单胎妊娠的NIPT受检样本，其中86193例样本能够获得检测结果。这篇文章最主要的意义是将这8万例受检样本按照人群特征进行分类，并统计计算了不同人群中，NIPT检测检出常见三种染色体三体、不常见的常染色体三体、性染色体异常以及CNV的PPV、NPV、检测的敏感性特异性等统计数据。这给临床检测中应用拓展性NIPT技术提供了参考依据。