The (Cost-)Effectiveness of Surgical Excision of Colorectal Endometriosis Compared to ART Treatment Trajectory
Launched by LEIDEN UNIVERSITY MEDICAL CENTER · Dec 22, 2022
Trial Information
Current as of July 01, 2025
Recruiting
Keywords
ClinConnect Summary
This clinical trial is looking at whether surgery to remove colorectal endometriosis can help women achieve pregnancy more effectively than traditional fertility treatments like in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). The goal is to see if women who have this surgery experience higher rates of successful pregnancies and better overall health outcomes compared to those who choose IVF/ICSI.
To take part in the trial, women must have confirmed colorectal endometriosis and a strong desire to become pregnant, especially if they have been trying for over a year or have severe pain that makes it hard to conceive. Eligible participants can be in heterosexual or same-sex relationships. The study is currently recruiting women aged 18 to 39 who are facing a choice between these two treatment options. Throughout the trial, participants can expect close monitoring of their health and pregnancy outcomes, providing valuable information for future patients dealing with similar issues.
Gender
FEMALE
Eligibility criteria
- Inclusion Criteria:
- * Colorectal endometriosis defined as endometriosis involving the (colo)rectum:
- • #Enzian classification score C1,C2,C3 (C=rectum) or FI (F=far locations, I=sigmoid colon) detected with ultrasound or MRI;
- • Women in a heterosexual or in a same-sex relationship;
- * The patient has an active wish to conceive and experiences at least one of the following criteria:
- • At least one year of non-conception (either spontaneous of after intra uterine inseminations)
- • Inability to have timed intercourse because of pain (dyspareunia and/or chronic pelvic pain)
- • Severe complaints (expectant management is not acceptable (anymore)
- • The patients has an indication for IVF/ICSI according to Dutch guidelines (Werkgroep netwerkrichtlijn, december 2010);
- • failed intra uterine insemination
- • male factor subfertility (oligoasthenoteratozoospermia defined as VCM \<1 million)
- • bilateral tubal pathology (e.g. bilateral hydrosalpinx, bilateral tubal occlusion)
- • age \> 38 years and (unexplained) subfertility
- • severe endometriosis in case of subfertility
- • The patient is faces the choice between IVF/ICSI or laparoscopic (colorectal) endometriosis or is on the waiting list for a respective treatment at T=0 (at the beginning of the treatment trajectory), T=1 (after one unsuccessful IVF/ICSI cycle) or T=2 (after 2 unsuccessful IVF/ICSI cycles)
- Exclusion Criteria:
- • Patients with deep endometriosis without colorectal involvement;
- • Patients who conceive spontaneously prior to intervention;
- • Patients requiring surgery on short notice and therefore unable to opt for IVF/ICSI (e.g. in case of unilateral or bilateral hydronephrosis, severe bowel stenosis and suspicion of an impending ileus);
- • Patients with a contra-indication for IVF/ICSI (e.g. diminished ovarian reserve (premature ovarian failure) (AMH (when available) \<p10 adjusted for age), untreated congenital uterine abnormalities, maltreated/untreated systemic or malignant disease or severe risk factors for oocyte aspiration);
- • Patients diagnosed with other diseases causing infertility (e.g. recurrent miscarriages, antiphospholipid syndrome);
- • Not able to read and understand Dutch or English.
About Leiden University Medical Center
Leiden University Medical Center (LUMC) is a prominent academic medical center located in the Netherlands, renowned for its commitment to advancing healthcare through innovative research and high-quality patient care. As a clinical trial sponsor, LUMC focuses on translating scientific discoveries into effective therapies, fostering collaborations between researchers, clinicians, and industry partners. The center is dedicated to conducting rigorous clinical studies across various medical fields, ensuring adherence to ethical standards and regulatory requirements while prioritizing patient safety and outcomes. Through its multidisciplinary approach, LUMC aims to contribute significantly to the understanding and treatment of complex health conditions, driving progress in personalized medicine and improving global health.
Contacts
Jennifer Cobb
Immunology at National Institute of Allergy and Infectious Diseases (NIAID)
Locations
Leiden, , Netherlands
Rotterdam, , Netherlands
Eindhoven, , Netherlands
Maastricht, , Netherlands
Groningen, , Netherlands
Nijmegen, , Netherlands
Enschede, , Netherlands
Den Haag, , Netherlands
Den Haag, , Netherlands
Utrecht, , Netherlands
Voorburg, , Netherlands
Patients applied
Trial Officials
Mathijs D. Blikkendaal, MD, PhD
Principal Investigator
Nederlandse Endometriose Kliniek (NEK), Reinier de Graaf Gasthuis
Andries RH Twijnstra, MD, PhD
Study Chair
Leiden University Medical Center
Astrid EP Cantineau, MD, PhD
Study Chair
University Medical Center Groningen
Jacques Maas, MD, PhD
Study Chair
Maastricht University Medical Center
Annemiek Nap, MD, PhD
Study Chair
Radboud University Medical Center
Dana Huppelschoten
Study Chair
Catharina Ziekenhuis
Simone Broer
Study Chair
UMC Utrecht
Tobias Limperg
Study Chair
Nederlandse Endometriose Kliniek (NEK), Reinier de Graaf Gasthuis
Yvonne Louwers
Study Chair
Erasmus Medical Center
Marieke Verberg
Study Chair
Medisch Spectrum Twente
Timeline
First submit
Trial launched
Trial updated
Estimated completion
Not reported
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