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A copy number variation genotyping method for aneuploidy detection in spontaneous abortion specimens
Author(s) -
Chen Songchang,
Liu Deyuan,
Zhang Junyu,
Li Shuyuan,
Zhang Lanlan,
Fan Jianxia,
Luo Yuqin,
Qian Yeqing,
Huang Hefeng,
Liu Chao,
Zhu Huanhuan,
Jiang Zhengwen,
Xu Chenming
Publication year - 2017
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.4986
Subject(s) - aneuploidy , concordance , abortion , genotyping , miscarriage , comparative genomic hybridization , biology , copy number variation , obstetrics , products of conception , medicine , gynecology , pregnancy , genetics , chromosome , genotype , genome , gene
Objective Chromosomal abnormalities such as aneuploidy have been shown to be responsible for causing spontaneous abortion. Genetic evaluation of abortions is currently underperformed. Screening for aneuploidy in the products of conception can help determine the etiology. We designed a high‐throughput ligation‐dependent probe amplification (HLPA) assay to examine aneuploidy of 24 chromosomes in miscarriage tissues and aimed to validate the performance of this technique. Methods We carried out aneuploidy screening in 98 fetal tissue samples collected from female subjects with singleton pregnancies who experienced spontaneous abortion. The mean maternal age was 31.6 years (range: 24–43), and the mean gestational age was 10.2 weeks (range: 4.6–14.1). HLPA was performed in parallel with array comparative genomic hybridization, which is the gold standard for aneuploidy detection in clinical practices. The results from the two platforms were compared. Results Forty‐nine out of ninety‐eight samples were found to be aneuploid. HLPA showed concordance with array comparative genomic hybridization in diagnosing aneuploidy. Conclusion High‐throughput ligation‐dependent probe amplification is a rapid and accurate method for aneuploidy detection. It can be used as a cost‐effective screening procedure in clinical spontaneous abortions. © 2016 John Wiley & Sons, Ltd.