Christian De Geyter

2026

Transdermal testosterone gel vs placebo in women with diminished ovarian reserve prior to in vitro fertilization: a randomized, clinical trial.

Nature communications ·doi:10.1038/s41467-026-69557-z

Diminished ovarian reserve (DOR) is common in women with infertility and is associated with poorer in vitro fertilization (IVF) outcomes. Testosterone is widely used off-label in this patient group, although evidence for its efficacy and sa…

2024

Declining global fertility rates and the implications for family planning and family building: an IFFS consensus document based on a narrative review of the literature.

Human Reproduction Update ·doi:10.1093/humupd/dmad028

BackgroundFamily-planning policies have focused on contraceptive approaches to avoid unintended pregnancies, postpone, or terminate pregnancies and mitigate population growth. These policies have contributed to significantly slowing world p…

2024

Survey on ART and IUI: legislation, regulation, funding, and registries in European countries-an update.

Human reproduction (Oxford, England) ·doi:10.1093/humrep/deae163

Study questionHow are ART and IUI regulated, funded, and registered in European countries, and how has the situation changed since 2018?Summary answerOf the 43 countries performing ART and IUI in Europe, and participating in the survey, spe…

other 2017

Endometrial thickness influences neonatal birth weight in pregnancies with obstetric complications achieved after fresh IVF-ICSI cycles

Archives of gynecology and obstetrics ·doi:10.1007/s00404-017-4411-z

PURPOSE: Pregnancy-associated complications, duration of gestation and parity are well-known predictors of neonatal birth weight. Assisted reproductive technology (ART) affects neonatal birth weight as well. Endometrial thickness as measure…

article 2012

Konsensus: Diagnostik und Therapie der Endometriose

article 2012

Randomized controlled trial comparing highly purified (HP-hCG) and recombinant hCG (r-hCG) for triggering ovulation in ART

·doi:10.1016/j.fertnstert.2012.07.630

other 2009

The multipotency of luteinizing granulosa cells collected from mature ovarian follicles

Stem cells (Dayton, Ohio) ·doi:10.1634/stemcells.2008-0233

Graafian ovarian follicles consist of follicular fluid, one single mature oocyte, and several hundred thousands of granulosa cells (GCs). Until now, luteinizing GCs have been considered to be terminally differentiated, destined to undergo d…

article 1998

Low Multiple Pregnancy Rates and Reduced Frequency of Cancellation After Ovulation Induction with Gonadotropins, If Eventual Supernumerary Follicles Are Aspirated to Prevent Polyovulation

·doi:10.1023/a:1023000719569

PurposeOur purpose was to demonstrate the feasibility of the routine aspiration of supernumerary follicles in infertile patients with imminent polyovulation after ovulation induction with gonadotropins and to examine its effect on the frequ…

article 1996

Experience with transvaginal ultrasound-guided aspiration of supernumerary follicles for the prevention of multiple pregnancies after ovulation induction and intrauterine insemination

·doi:10.1016/s0015-0282(16)58332-0

ObjectiveTo avoid multiple pregnancies caused by ovulation induction.SettingInfertile couples treated in the Women's Hospital and the Institute of Reproductive Medicine of the University of Münster, Münster, Germany.DesignThe outcome of ovu…