Neonatal outcomes of live births after blastocyst biopsy in preimplantation genetic testing cycles: a follow-up of 1,721 children

Blastocyst biopsy may not add additional risk to neonatal outcomes when compared with controls.

Like Comment
Related Content

Volume 112, Issue 1, Pages 82–88


Hui He, M.D., Shuang Jing, M.Sc., Chang Fu Lu, Ph.D., Yue Qiu Tan, Ph.D., Ke Li Luo, Ph.D., Shuo Ping Zhang, Ph.D., Fei Gong, M.D., Ph.D., Guang Xiu Lu, M.D., Ge Lin, M.D., Ph.D.



To investigate whether blastocyst biopsy in preimplantation genetic testing (PGT) increases the risk of adverse neonatal outcomes.


Retrospective cohort study.


University-affiliated center.


Live births after blastocyst biopsy combined with frozen ET (PGT group) and frozen blastocyst transfer after in vitro fertilization or intracytoplasmic sperm injection (control group).


Blastocyst biopsy.

Main Outcome Measure(s)

Gestational age (GA), birth weight (BW), and rates of preterm birth (PB), very preterm birth (VPB), extreme preterm birth (EPB), low birth weight (LBW), very low birth weight (VLBW), and macrosomia.


No significant differences were observed in the sex ratio, GA, PB, VPB, EPB, BW, or rates of LBW, VLBW, and macrosomia between the PGT and control groups for either singletons or twins. However, the cesarean section rate of the PGT group was significantly higher than that of the control group for twins (adjusted odds ratio, 2.383 [1.079, 5.259]). Regarding fluorescence in situ hybridization–PGT neonates, neonatal outcomes, including GA, BW, and rates of PB, VPB, LBW, and VLBW, did not differ between the different groups of biopsied cells (≥10 group and <10 group) for either the grade B or grade C trophectoderm score subgroups; however, in the grade B trophectoderm score subgroup, the rate of boy babies in the ≥10 group was significantly higher than that in the <10 group (83.3% vs. 40.9%). The association between the number of biopsied cells and GA/BW was not statistically significant.


Blastocyst biopsy may not add additional risk to neonatal outcomes when compared with a control group.

Read the full text here.

Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders. The journal publishes juried original scientific articles in clinical and laboratory research relevant to reproductive endocrinology, urology, andrology, physiology, immunology, genetics, contraception, and menopause. Fertility and Sterility® encourages and supports meaningful basic and clinical research, and facilitates and promotes excellence in professional education, in the field of reproductive medicine.