June 2, 2026 · Reproductive biology and endocrinology : RB&E · DOI: 10.1186/s12958-026-01569-2

Pharmacodynamic interaction analysis of dydrogesterone, progesterone, and estradiol in combination-progestin HRT frozen embryo transfer: a prospective clinical cohort study

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This study investigates the pharmacodynamic interactions between dydrogesterone (DYD), progesterone (P), and estradiol (E2) in the context of hormone replacement therapy for frozen embryo transfer (HRT-FET) in anovulatory women. The authors aim to determine how these hormones' independent and combined levels affect clinical outcomes, specifically live birth rates. Their findings suggest that higher concentrations of both DYD and P correlate with increased live birth rates, indicating potential additive effects that warrant further exploration in larger studies.

Tanja K Eggersmann, Noemi Hamala, Roman Alexander Friedrich Hiller, Marion Depenbusch, Askan Schultze-Mosgau, Philippos Edimiris, Dunja Baston-Buest, Alexander P Bielfeld, Jan-Steffen Kruessel, Sören von Otte, Wiebe Junkers, Sascha Tauchert, Reinhard Vonthein, Georg Griesinger

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