Christian De Geyter
ORCID: 0000-0002-0889-6310
· 12 papers in corpus
rct
2026
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…
observational
2025
OBJECTIVE: To study pregnancy dating, we developed growth charts using data from pregnancies with known gestational age. The most widely used growth charts for ultrasonographic early pregnancy variables were developed decades ago and are ba…
guideline
2024
BACKGROUND: Family-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…
other
2024
STUDY QUESTION: How are ART and IUI regulated, funded, and registered in European countries, and how has the situation changed since 2018? SUMMARY ANSWER: Of the 43 countries performing ART and IUI in Europe, and participating in the surve…
other
2022
The pathogenic variant Phe508del of the CFTR-gene is the most frequent cause of cystic fibrosis (CF). Whereas male CF-patients are infertile due to bilateral agenesis of the efferent ducts, the fertility status of male heterozygous carriers…
other
2020
As a transcription factor, SNAIL plays a crucial role in embryonic development and cancer progression by mediating epithelial‑mesenchymal transition (EMT); however, post‑translational modifications, such as ubiquitination, which control the…
observational
2017
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…
review
2013
Antral follicular growth in the ovary is characterized by rapid expansion of granulosa cells accompanied by a rising complexity of their functionality. Within two weeks the number of human granulosa cells increases from less than 500,000 to…
2012
2012
lab-animal
2009
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…
rct
1996
OBJECTIVE: To avoid multiple pregnancies caused by ovulation induction. SETTING: Infertile couples treated in the Women's Hospital and the Institute of Reproductive Medicine of the University of Münster, Münster, Germany. DESIGN: The outc…