New injection could save ovaries in endometriosis cyst surgery
NCT ID NCT06775769
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests if injecting alcohol into endometriosis-related ovarian cysts (sclerotherapy) can better preserve egg supply and reduce cyst return compared to standard surgical removal. Sixty women aged 18-40 with cysts at least 2 cm will be randomly assigned to one of the two treatments. Researchers will track ovarian reserve, symptom changes, and cyst recurrence over two years.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2025
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 45 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Female (XX genotype, assigned female at birth) * Age 18-40 * Finding of suspected uni- or bi-lateral ovarian endometrioma(ta) of ≥ 2cm on TVUSS and/or pelvic MRI scan (TVUSS, a uni- or multi-locular ovarian cystic lesion with low level echoes and diffuse homogeneous ground glass appearance; MRI any of, ovarian lesion hyperintense T1 without loss of signal on T1 fat-suppressed images, hypointense T2 exhibiting shading sign and/or T2 dark spot sign, variable restricted diffusion on DWI) * Appropriate to be listed for laparoscopic excision of endometrioma (Endometrioma ≥2cm, pain symptoms attributable to endometriosis where medical management is unsuccessful or unacceptable to the patient, to facilitate ART) Exclusion Criteria: * Postmenopausal status * Suspicion of malignancy * Unable to undergo TVUSS * Declines to take part in the study * Unable to understand verbal or written information in English * Lack of capacity to consent at the point of recruitment * Known safeguarding issues
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Chelsea and Westminster NHS Foundation Trust
RECRUITINGLondon, SW10 9NH, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a hormone drug shrink painful ovarian cysts better than the pill?
- Which endometrioma treatment best protects fertility?
- Which surgery helps women with endometriomas get pregnant faster?
- New U.S. study explores cyst-draining technique to protect fertility
- Scientists probe uterine fluid absorption to unlock fertility secrets