Spontaneous ovulation, hormonal profiles, and the impact of progesterone timing variation on outcomes in natural proliferative phase frozen embryo transfer cycles with single euploid blastocyst transfer

Abstract Background Natural cycle frozen embryo transfer (NC-FET) lowers obstetric risks by preserving ovulation and corpus luteum but limits scheduling flexibility. Natural proliferative phase FET (NPP-FET) offers a scheduling-friendly alternative, assuming ovulation is maintained after flexible pr...

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Main Authors: Ting-Chi Huang, William Hao-Yu Lee, Mei-Zen Huang, Kuan-Hao Tsui, Chuang-Yen Huang, Gwo-Jang Wu, Mei-Jou Chen, Jehm-Hsiahn Yang, Shee-Uan Chen, Jiann-Loung Hwang, Fung-Wei Chang
Format: Article
Language:English
Published: BMC 2025-07-01
Series:Journal of Ovarian Research
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Online Access:https://doi.org/10.1186/s13048-025-01742-y
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