Experimental antibody boosts chemo in ovarian cancer trial
NCT ID NCT05605535
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This phase 2 trial tests whether adding an experimental antibody called oregovomab to standard chemotherapy (paclitaxel and carboplatin) helps control advanced ovarian, fallopian tube, or peritoneal cancer better than chemo alone. About 88 women with newly diagnosed stage III or IV disease will receive the combination or a placebo before and after surgery. The main goal is to see if the combination improves progression-free survival at 12 months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Oregovomab (an experimental antibody) plus chemotherapy (paclitaxel and carboplatin)
- What this could lead to
- If it works, this could lead to a new treatment option that helps control advanced ovarian cancer for longer before surgery.
- What could go wrong
- This is a mid-stage trial with only 88 participants, so results may not apply to everyone. The drug could cause side effects or not improve outcomes compared to chemo alone.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 88 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2023
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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 years and older
- 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: 1. Adult females 18 years old or older. 2. Newly diagnosed epithelial adenocarcinoma of ovarian, fallopian tube or peritoneal origin FIGO Stage III or IV patients whose disease is confirmed based on biopsy sample. 3. Eligible histologic epithelial cell types: high grade serous adenocarcinoma, high grade endometrioid adenocarcinoma, undifferentiated carcinoma, clear cell adenocarcinoma, mixed epithelial carcinoma, or adenocarcinoma not otherwise specified (N.O.S.). 4. Suitable venous access for the study-required procedures. 5. Serum CA125 levels ≥ 50 U/mL prior to Cycle 1 of NACT chemotherapy + oregovomab or placebo. 6. Adequate bone marrow function: 1. Absolute neutrophil count (ANC) ≥ 1,500/μL. 2. Platelets ≥100,000/μL. 3. Hemoglobin ≥ 8.0 g/dL (Note: Blood transfusion is permitted up to 48 hours before the first dose of study treatment). 7. Adequate liver function: 1. Bilirubin \< 1.5 times upper limit normal (ULN). 2. SGOT/AST and SGPT/ALT \< 2.5 times ULN. 8. Adequate renal function: a. Creatinine ≤ 1.5 times ULN. 9. ECOG Performance Status of 0, 1 or 2. 10. Women of childbearing potential must be willing to avoid pregnancy by using a highly effective method of contraception from the first dose of study treatment to 6 months after last dose of study treatment. 11. Signed written informed consent form and authorization permitting release of personal health information. Ability to comply with treatment and follow up Exclusion Criteria: 1. Patients with mucinous adenocarcinoma, carcinosarcoma, tumors with neuroendocrine features and low-grade adenocarcinoma (including low grade serous and FIGO grade 1 endometrioid adenocarcinomas of the ovary). 2. FIGO Stage IV patients: 1. FIGO stage IV patients suspected or diagnosed with bone or brain metastasis are excluded. 2. FIGO stage IV patients diagnosed with lung and/or liver metastasis with tumour size more than 2 cm are excluded. 3. FIGO stage IV patients diagnosed with lung and/or liver metastasis and expected to administer with more than 3 cycles of chemotherapy and/or not suitable for interval debulking surgery are excluded. 3. Patients must not have received any prior chemotherapy, immunotherapy, targeted or hormonal therapy. 4. Patients who are lactating and breastfeeding or have a positive serum pregnancy test within 14 days prior to the first dose of study treatment. 5. Any serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the completion of study treatment according to this protocol. 6. Active autoimmune disease such as rheumatoid arthritis, SLE, ulcerative colitis, Crohn's Disease, MS, or ankylosing spondylitis, requiring active disease modifying treatment. 7. Known allergy to murine proteins or hypersensitivity to any of the excipients of the oregovomab, paclitaxel, or carboplatin. 8. Chronically treated with immunosuppressive drugs such as cyclosporine, adrenocorticotropic hormone (ACTH), etc. 9. Chronic therapeutic corticosteroid use, defined as \> 5 days of prednisone or equivalent, except for inhalers or those on a pre-planned steroid taper. (Note: Premedication with corticosteroids per institutional standard of care is allowed.) 10. Recognized acquired, hereditary, or congenital immunodeficiency disease, including cellular immunodeficiencies, hypogammaglobulinemia or dysgammaglobulinemia. 11. Clinically significant active infection(s) at the time of screening. 12. Any of the following conditions (on-study testing is not required): 1. Known HIV-infected patients unless on effective anti-retroviral therapy with an undetectable viral load within 6 months prior to randomization, or 2. Known or suspected hepatitis B if active infection (patients with chronic hepatitis B infection must have an undetectable HBV viral load on suppressive therapy, if indicated; positive surface antibody alone is not an exclusion), or 3. Known or suspected hepatitis C infection which has not been treated and cured unless currently on treatment with an undetectable viral load. 13. Uncontrolled or life-threatening diseases compromising safety evaluation. Diagnosed or treated for another malignancy within 5 years before the first dose, or previously diagnosed with another malignancy and have any evidence of residual disease. Patients with non-melanoma skin cancer, ductal carcinoma in-situ (DCIS) of the breast or cervix carcinoma in situ are not excluded if they have undergone complete resection. a. Synchronous endometrial cancer, but a prior diagnosis of endometrial cancer within 5 years is not excluded if all of the following conditions are met: Stage IA, superficial myometrial invasion, without lymphovascular invasion, and not poorly differentiated subtypes including papillary serous, clear cell or other FIGO Grade II and III lesions. 15\. Contraindication to the use of pressor agents. 16. Undergone prior surgical debulking. 17. History or evidence upon physical examination of CNS disease, seizures not controlled with standard medical therapy, or any brain metastases. 18. Any of the following cardiovascular conditions: 1. Acute myocardial infarction within 6 months before the first dose of study treatment. 2. Current history of New York Heart Association (NYHA) Class III or IV heart failure 3. Evidence of current uncontrolled cardiovascular conditions including cardiac arrhythmias, angina, pulmonary hypertension, or electrocardiographic clinically significant findings. 19. Unable to read or understand or unable to sign the necessary written consent before starting treatment. 20. May not receive any live, attenuated vaccine administered within 28 days (or 4 weeks) prior to enrollment, during the study, and for at least 90 days after the last dose of study treatment. 21. Patients who will receive Hyperthermic Intraperitoneal Chemotherapy (HIPEC), any other anti-cancer medications, including bevacizumab, PARPi, or any other investigational agent(s) with 3 cycles of paclitaxel and carboplatin neo-adjuvant treatment will be excluded.
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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.
Contacts and locations
Locations
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Amrita Institute of Medical Sciences
Kochi, Kerala, 682041, India
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Himalaya Cancer Hospital and Research Institute
Vadodara, Gujarat, India
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Institute of Medical Sciences, BHU
Varanasi, Uttar Pradesh, 221005, India
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JIPMER
Puducherry, Puducherry, 605006, India
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KLES Dr. Prabhakar Kore Hospital and Medical Research Centre
Belagavi, Karnataka, 590010, India
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Kailash Cancer Hospital and Research Centre
Vadodara, Gujarat, India
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King George Hospital
Visakhapatnam, Andhra Pradesh, India
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King Georges Medical University
Lucknow, Uttar Pradesh, 226003, India
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MNJ Cancer Hospital
Hyderabad, Telangana, 500004, India
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Omega Hospitals
Visakhapatnam, Andhra Pradesh, 530040, India
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Regional Cancer Centre, Medical College
Trivandrum, Kerala, 695011, India
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Saveetha Medical College and Hospitals
Chennai, Tamil Nadu, 602105, India
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Sri Ram Cancer Hospital
Jaipur, Rajasthan, 302022, India
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Sri Ramchandra Medical Centre
Chennai, Tamil Nadu, India
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