Argon plasma coagulation versus standard cystectomy for ovarian endometrioma

Argon Plasma Treatment for Ovarian Endometrioma Compared to Standard Cystectomy: A Prospective Controlled Randomized Pilot Study

Not applicable Interventional Erbe Elektromedizin GmbH · NCT07065214

This trial will test whether argon plasma coagulation preserves ovarian reserve better than standard cystectomy for people having surgery for ovarian endometriomas.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment72 (estimated)
Ages18 Years to 40 Years
SexFemale
SponsorErbe Elektromedizin GmbH Industry-sponsored
Locations1 site (Tübingen, Germany)
Trial IDNCT07065214 on ClinicalTrials.gov

What this trial studies

This is a prospective, single-center, randomized controlled pilot trial enrolling 72 patients with symptomatic ovarian endometriomas who are scheduled for surgery. Participants are randomized 1:1 to receive either standard cystectomy or argon plasma coagulation (APC) during laparoscopy. The main outcome compares changes in serum AMH from before surgery to follow-up at 6 months, with a pre-specified primary endpoint analysis after the last patient completes Visit 4. The trial is conducted at the Department for Women's Health in Tübingen, Germany, under a post-market evaluation framework.

Who should consider this trial

Good fit: People with symptomatic ovarian endometriomas who are scheduled for surgical treatment, can give informed consent, and meet the study's eligibility criteria are ideal candidates.

Not a fit: Patients who have had prior ovarian surgery, recurrent ovarian endometrioma, are pregnant or breastfeeding, cannot comply with follow-up, or are enrolled in other studies affecting AMH are not eligible and likely would not benefit from this trial.

Why it matters

Potential benefit: If successful, APC could better preserve ovarian reserve and reduce the impact of surgery on future fertility compared with standard cystectomy.

How similar studies have performed: Standard cystectomy is a well-established treatment known to affect ovarian reserve, while APC for ovarian endometrioma is less studied and has only limited preliminary evidence.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Indication for surgical endometrioma treatment according to patient symptoms
* Signed informed consent

Exclusion Criteria:

* Expected lack of patient compliance or inability of the patient to understand the purpose of the clinical trial
* Prior procedures at the ovaries
* Recurrent endometrioma (patients with recurrent endometriosis outside of the ovar, e.g. peritoneal endometriosis lesions can be included)
* Pregnant or breastfeeding patients
* Participation in any other clinical study that could affect the AMH level or pregnancy

Where this trial is running

Tübingen, Germany

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Endometriosisovarian endometriosis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.