This study assessed the difference in singleton live birth rate (SLBR) between preimplantation genetic testing for aneuploidy (PGT-A) and non-PGT in patients undergoing elective single frozen blastocyst transfer (eSFBT).
This retrospective cohort study evaluated 10,701 cycles of eSFBT, including PGT-A (n = 3125) and non-PGT (n = 7576). Cycles were further stratified according to age at retrieval. The main outcome was SLBR; secondary outcomes were clinical pregnancy, conception rates, and multiple live birth rate. Confounders were adjusted using multivariable logistic regression models, and the trend test was performed using the general linear model.
SLBR was negatively correlated with age in the non-PGT group (p-trend < 0.001) but not in PGT-A group (p-trend = 0.974). Stratified by the age, SLBR were significantly different between two groups except for the 20–24-year-old group: PGT-A vs non-PGT group in 20–24, 25–29, 30–34, 35–39 and ≥ 40-year-old subgroups were, 53.5% vs 53.2%, 53.5% vs 48.0%, 53.5% vs 43.1%, 53.3% vs 32.5%, and 42.9% vs 17.6%, respectively. In addition, after adjusting for potential confounders, SLBR still remained significantly different in all age groups except in the youngest quartile (PGT-A vs non-PGT group, 20–24: adjusted odds ratio (aOR), 1.33, 95% CI, 0.92–1.92, p = 0.129; 25–29: aOR, 1.32, 95% CI, 1.14–1.52, p < 0.001; 30–34: aOR, 1.91, 95% CI, 1.65–2.20, p < 0.001; 35–39: aOR, 2.50, 95% CI, 1.97–3.17, p < 0.001; ≥ 40: aOR, 3.54, 95% CI, 1.66–7.55, p = 0.001).
PGT-A might improve SLBR among all age groups and play an increasingly important role in SLBR in older patients who underwent eSFBT.
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The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.
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This work was supported by the Natural Science Foundation of Guangdong Province (2021A1515010559) and Guangdong Provincial Key Laboratory of Reproductive Medicine (2020B1212060029).
This study was funded by the Natural Science Foundation of Guangdong Province (2021A1515010559) and Guangdong Provincial Key Laboratory of Reproductive Medicine (2020B1212060029).
Ethics approval and consent to participate
The present study received approval from the Institutional Review Board of the First Affiliated Hospital of Sun Yat-sen University on 16 Aug 2021 (No. 538).
Declaration of interest
The authors have no relevant financial or non-financial interests to disclose.
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Zetong Zheng and Jifan Tan have contributed equally to this work and shared the first authorship.
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Zheng, Z., Tan, J., Chen, L. et al. PGT-A improved singleton live birth rate among all age groups of women who underwent elective single blastocyst transfer: a single-centre retrospective study. J Assist Reprod Genet 40, 1417–1427 (2023). https://doi.org/10.1007/s10815-023-02775-2