Array-based comparative genomic hybridization combined with quantitative fluorescence-polymerase chain reaction analysis of spontaneous abortion tissue / 中国医师进修杂志

ABSTRACT

Objective:To detect and analyze the spontaneous abortion tissue by Array-based comparative genomic hybridization (Array-CGH) combined with quantitative fluorescence polymerase chain reaction (QF-PCR), and provide genetic guidance for spontaneous abortion prevention and prenatal testing.Methods:A total of 345 patients who were diagnosed with spontaneous abortion at Dalian Women′s and Children′s Medical Center between July 2016 to September 2019 were continuously collected. Array-CGH combined with QF-PCR technology was used to analyze and collect abortion tissues that met the inclusion criteria.Results:QF-PCR detected a total of 213 cases of abnormal chromosome number, and Array-CGH supplemented the detection of 24 cases of abnormal chromosome structure. The genetic abnormality detection rate reached 68.7% (237/345) , and common abortion tissues′ chromosomal abnormalities in this area were detected. The incidence of abortion tissues′ chromosomal abnormalities in the elder pregnant women (≥ 35 years) and earlier trimester pregnant women (<10 weeks) was significantly increased 84.43% (141/167) vs. 53.93% (96/178), 59.42% (205/284) vs. 9.28% (32/61).Conclusions:Array-CGH combined with QF-PCR is comprehensive and complementary. Some karyotype abnormalities are more common in abortion tissues. The elder and earlier trimester pregnant women should accept genetic counseling.