The Immune Landscape of Epithelial Ovarian Cancer

NCT ID: NCT05984875

Last Updated: 2025-11-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

74 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-12-20

Study Completion Date

2028-12-31

Brief Summary

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This is a single center prospective observational study to characterize the immune landscape of newly diagnosed epithelial ovarian cancer (OC).

Patients with newly diagnosed epithelial OC will be enrolled in 4 different cohorts: A) Newly diagnosed high grade serous or endometroid OC undergoing primary debulking surgery; B) Newly diagnosed high grade serous or endometroid OC undergoing neoadjuvant chemotherapy (NACT) followed by interval debulking surgery; C) Rare subtypes of epithelial OC (low grade serous, low grade endometrioid, clear cell, mucinous or carcinosarcoma) undergoing primary debulking surgery; D) Rare subtypes of epithelial OC (low grade serous, low grade endometrioid, clear cell, mucinous or carcinosarcoma) undergoing NACT followed by interval debulking surgery. A cohort of women undergoing adnexectomy for benign pathology will be enrolled (cohort E) for comparative analysis.

Enrolled patients will be asked to provide the following biological samples at specified time points: archival and fresh tumor tissue, peripheral blood samples, rectal and vaginal swabs, ascites (when present).

The main aim of the study is to characterize the immune landscape of epithelial OC in tumor tissue and peripheral blood and correlate the presence of myeloid-derived suppressive cells (MDSCs) and other immune infiltrates and of the systemic immune response with progression free interval (PFI) in epithelial OC.

Detailed Description

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Conditions

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Epithelial Ovarian Cancer

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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A

Newly diagnosed high grade serous or endometroid OC undergoing primary debulking surgery

Collection of tumor samples, blood and vaginal and rectal swabs

Intervention Type OTHER

The following biological samples will be collected at different time points, according to the specified cohort and after signing the inform consent form: tumor tissue (fresh and archival) or normal tissue (cohort E), ascites (when present), peripheral blood, rectal swab, vaginal swab.

B

Newly diagnosed high grade serous or endometroid OC undergoing NACT followed by interval debulking surgery. This cohort also includes patients that will not be deemed suitable for interval debulking surgery following NACT

Collection of tumor samples, blood and vaginal and rectal swabs

Intervention Type OTHER

The following biological samples will be collected at different time points, according to the specified cohort and after signing the inform consent form: tumor tissue (fresh and archival) or normal tissue (cohort E), ascites (when present), peripheral blood, rectal swab, vaginal swab.

C

Rare subtypes of epithelial OC (low grade serous, low grade endometrioid, clear cell, mucinous or carcinosarcoma) undergoing primary debulking surgery

Collection of tumor samples, blood and vaginal and rectal swabs

Intervention Type OTHER

The following biological samples will be collected at different time points, according to the specified cohort and after signing the inform consent form: tumor tissue (fresh and archival) or normal tissue (cohort E), ascites (when present), peripheral blood, rectal swab, vaginal swab.

D

Rare subtypes of epithelial OC (low grade serous, low grade endometrioid, clear cell, mucinous or carcinosarcoma) undergoing NACT followed by interval debulking surgery. This cohort also includes patients with the selected histological subtypes that will not be deemed suitable to interval debulking surgery following NACT

Collection of tumor samples, blood and vaginal and rectal swabs

Intervention Type OTHER

The following biological samples will be collected at different time points, according to the specified cohort and after signing the inform consent form: tumor tissue (fresh and archival) or normal tissue (cohort E), ascites (when present), peripheral blood, rectal swab, vaginal swab.

E

Women undergoing adnexectomy for benign pathology

No interventions assigned to this group

Interventions

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Collection of tumor samples, blood and vaginal and rectal swabs

The following biological samples will be collected at different time points, according to the specified cohort and after signing the inform consent form: tumor tissue (fresh and archival) or normal tissue (cohort E), ascites (when present), peripheral blood, rectal swab, vaginal swab.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Suspicious diagnosis of epithelial ovarian cancer (subsequent histologically confirmation required)
* Plan to undergo a surgical procedure for the management of epithelial ovarian cancer or recurrent ovarian cancer previously treated with conventional treatment and involved in the trial as group A-D
* ≥18 years old
* ECOG Performance Status ≤ 2
* Written informed consent


* Indication for adnexectomy for a benign gynecological condition
* ≥18 years old
* ECOG Performance Status ≤ 2
* Written informed consent

Exclusion Criteria

* Other active concomitant neoplasms that might confound the results of the planned analysis.
* Ongoing active autoimmune disease requiring treatment or condition of immune deficiency
* Ongoing chronic treatment with steroids or other immune suppressive agents at the time of study entry
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Institute of Oncology Research

UNKNOWN

Sponsor Role collaborator

Oncology Institute of Southern Switzerland

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Oncology Institute of Southern Switzerland

Bellinzona, , Switzerland

Site Status RECRUITING

Countries

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Switzerland

Central Contacts

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Ilaria Colombo, MD

Role: CONTACT

+41764528823

Facility Contacts

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Ilaria Colombo, MD

Role: primary

+41764528823

Other Identifiers

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IOSI-GYNE-001

Identifier Type: -

Identifier Source: org_study_id

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