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1.中山大学附属第六医院生殖医学研究中心,广东 广州 510655
2.广东药科大学公共卫生学院流行病学与生物统计学教研室,广东 广州 510006
FANG Cong; E-mail: fangcong@mail.sysu.edu.cn
Received:22 September 2020,
Published:20 January 2021
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贾磊,陈静波,郭映纯等.无创胚胎植入前非整倍体筛查的诊断有效性分析[J].中山大学学报(医学科学版),2021,42(01):73-80.
JIA Lei,CHEN Jing-bo,GUO Ying-chun,et al.Diagnostic Efficiency of Noninvasive Preimplantation Genetic Testing for Aneuploidy[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(01):73-80.
目的
2
探讨无创胚胎植入前非整倍体筛查(niPGT-A)的诊断有效性。
方法
2
收集并再次分析了2018年7月到2019年7月期间,在中山大学附属第六医院生殖医学中心因染色体相互易位,或罗氏易位经首次滋养层细胞(TE)活检(TE1)行植入前,遗传学检测被诊断为非整倍体或嵌合的患者捐献胚胎24枚。解冻捐赠胚胎行滋养层细胞活检(TE2)、内细胞团活检(ICM)并收集囊胚培养液/囊胚腔液(BCM/BF)通过高通量测序技术获得遗传信息。以ICM的结果为胚胎真实染色体结果,比较TE1、TE2及BCM/BF的核型一致性。
结果
2
TE1、TE2及 BCM/BF与相应的ICM的核型一致性分别为66.7%,87.5%和79.2%(
P
>
0.05),任意两组之间的差异没有统计学意义(
P
>
0.05)。
结论
2
利用囊胚培养液/囊胚腔液中的游离DNA行无创胚胎植入前非整倍体筛查可以获得与同期活检的TE2和ICM相似的诊断有效性。
Objective
2
To investigate the diagnostic efficiency of noninvasive preimplantation genetic testing for aneuploidy (niPGT-A).
Methods
2
A total of 24 blastocysts diagnosed as aneuploid or mosaic by initial trophectoderm biopsy (TE1) preimplantation genetic testing for aneuploidy (PGT-A) were donated by 11 couples with reciprocal translocation or Robertsonian translocation. All the PGT cycles were performed at Center for Reproductive Medicine in the Sixth Affiliated Hospital of Sun Yat-sen University from July 2018 to July 2019. The 24 frozen-thawed blastocysts were reanalyzed by trophectoderm re-biopsy (TE2), inner cell mass (ICM) biopsy and collection of spent blastocyst culture medium/blastocoel fluid (BCM/BF) using Next Generation Sequencing (NGS) platform. With the corresponding ICM result as the actual chromosomal status, the karyotype concordances with corresponding ICM were compared among TE1, TE2 and BCM/BF sampling.
Results
2
The karyotype concordance rates of TE1, TE2 and BCM/BF with their corresponding ICM were 66.7%, 87.5% and 79.2%, respectively (
P
>
0.05). No statistically significant difference was found between any two groups (
P
>
0.05).
Conclusions
2
niPGT-A by using BCM/BF could achieve similar diagnostic efficiency as TE2-biopsy PGT-A and ICM-biopsy PGT-A.
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