Abstract:Objective To explore the diagnostic value of chromosomal microarray analysis (CMA) in fetal copy number abnormality (CNV) with cervical transparent layer (NT) thickening. Methods The clinical data of 70 pregnant women with fetal NT≥2.5 mm indicated by ultrasound in Ganzhou Maternal and Child Health Hospital from September 2019 to September 2020 were retrospectively analyzed. All of them received traditional G-banting chromosome analysis and CMA technique detection. CNV high-throughput sequencing (CNV-Seq) technology as the standard, the diagnostic value of traditional G-banding chromosome analysis and CMA detection were compared and the detection rate of CNV abnormality was compared.Results The result of CMA was in good agreement with that of CNV-Seq(Kappa=0.944),which was better than that of traditional G-banding chromosome analysis (Kappa=0.424). The area under curve (AUC) of CNV abnormalities diagnosed by CMA was greater than that by traditional G-banding chromosome analysis, the difference was statistically significant (P<0.05). The detection rate of CNV abnormalities by CMA was higher than that by traditional G-banding chromosome analysis, and the diagnostic sensitivity was higher than that by traditional G-banding chromosome analysis, the differences were statistically significant (P<0.05). Conclusion Diagnostic value of CMA technology is high for CNV abnormalities in NT-thickening fetuses, which can increase detection rate and diagnostic sensitivity of CVN.
胡文香. CMA技术对NT增厚胎儿CNV异常诊断价值分析[J]. 中国当代医药, 2021, 28(21): 121-124.
HU Wen-xiang. Analysis of diagnostic value of CMA technology for CNV abnormalities in NT-thickening fetuses. 中国当代医药, 2021, 28(21): 121-124.