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Study identifier: NCT05337072 Synced from ClinicalTrials.gov · July 28, 2026
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The FLORA-project: in Search for the Microbial Cause of Chronic Endometritis and the Most Appropriate Treatment to Obtain a Successful Pregnancy IVF/ICSI

Condition: Endometritis; Chronic · Subfertility  ·  Sponsor: Universitair Ziekenhuis Brussel

PhaseN/A
Planned participants1000
Who can joinFemale, N/A to no upper limit
Healthy volunteersYes

About this study

Chronic endometritis is an inflammatory condition of the endometrium. This inflammation can negatively affect fertility and pregnancy. The pathology is frequently (+-10%) observed in women with fertility problems. Today, diagnosis of chronic endometritis is not evident, since no well-validated classification scales are available. In the UZ Brussel the pathology department applies its own in-house scoring system, based on the presence and position of plasma cells within the histological images. Despite limited research so far, it recently became clear that the endometrium is colonized by micro-organisms (the microbiome). However, it is still unclear what role these microorganisms play in chronic endometritis and fertility problems. Chronic endometritis is often diagnosed in the context of fertility problems, and the patient is treated 'blindly' with broad-spectrum antibiotics such as doxycycline. Broad-spectrum antibiotics unnecessarily eradicate many microorganisms in our body, including the ones that positively influence implantation. The exact cause of chronic endometritis is unknown, so treatment remains empirical. The research and knowledge in the endometrial microbiome is constantly expanding, mainly due to the rise of research into the links between pathologies and human microbiota. It is becoming increasingly clear that the composition of the microbiome can play a vital role in health and disease. Regarding the influence of the endometrial microbiome on different path…

This description comes directly from the study's public registry record.

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Locations (1)

Universitair Ziekenhuis BrusselBrussels, BelgiumRecruiting

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Source record: clinicaltrials.gov/study/NCT05337072