Clinical trial Recruiting at 1 site Interventional Ages 18 and up Women only

Overcoming immune suppression and rebalancing the immune response in ovarian cancer

Official title: OveRcoming immunosupprEssion aNd rebAlancing the Immune reSponSe in ovAriaN CancEr Study

Run by Gynaecologisch Oncologisch Centrum Zuid · NCT06611072 · Data updated 2026-11-12

We will try to find and reverse immune suppression by analyzing bone marrow, blood, spleen, peritoneal fluid, and tumor samples from women having surgery for ovarian cancer.

More Ovarian Cancer trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment90 (estimated)
SponsorGynaecologisch Oncologisch Centrum Zuid
Academic / other
Drugs / interventionschemotherapy, Immunotherapy
Locations1 site (Eindhoven, North Brabant)
StatusRecruiting
StartedJanuary 1, 2025
Main results expectedOctober 2027
Study endsDecember 2027
Registry record updatedDecember 12, 2025
Trial IDNCT06611072 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Women aged 18 or older with newly diagnosed ovarian cancer who are scheduled for primary or interval debulking surgery and able to provide informed consent.

Probably not a fit

Pregnant or breastfeeding women, people with active infections or known immunosuppressive conditions, those taking immunomodulatory medications, or those with severe comorbidities are excluded and unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This translational project collects bone marrow, blood, peritoneal fluid, spleen, and tumor biopsies from women with newly diagnosed ovarian cancer undergoing primary or interval debulking, alongside control samples from women having benign gynecologic surgery. Researchers will profile myeloid progenitor cells and other immune cell populations to map tumor-induced changes in the bone marrow and tumor microenvironment. Ex vivo experiments will test whether nanoparticles or other agents can modify these cells to reduce immune suppression. The goal is to identify immune mechanisms and potential targets that could inform new immunotherapy strategies for ovarian cancer.

Why it matters

Potential benefit: If successful, the work could reveal new ways to reverse tumor-driven immune suppression and point to therapies that improve responses and survival in ovarian cancer patients.

How similar studies have gone: Related approaches have shown promising preclinical and laboratory results, but clinical benefit from reprogramming myeloid cells in ovarian cancer has not yet been established.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subjects should be at least 18 years old and mentally competent;
* Newly diagnosed patients with OC who go for primary debulking surgery or patients with OC who are scheduled for interval debulking;
* Controls: women who undergo surgery for benign gynaecological conditions under general anaesthesia.

Exclusion Criteria:

* Mentally incompetent;
* Pregnant or breastfeeding;
* Known inflammatory of infectious diseases or an immunosuppressive status;
* Using medication interfering with the immune system;
* Severe comorbidities: other active malignancy (except for basal cell carcinoma and other in situ carcinomas);
* Serious psychiatric pathology;
* A self reported alcohol consumption of \>21 units per week.

Where it's running

  • Catharina Hospital
    Eindhoven, North Brabant, Netherlands
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.