Phase 1 Ovarian Cancer Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People who are at least 18 years old.
- People who have been diagnosed with a specific type of ovarian, peritoneal (abdominal lining), or fallopian tube cancer confirmed by laboratory testing, including serous, clear cell, endometrioid, mucinous carcinoma, or carcinosarcoma subtypes.
- People whose cancer has stopped responding to platinum-based chemotherapy — either because the cancer progressed within 6 months of their last platinum treatment, or because they are unable to tolerate further platinum-based treatment.
- People with a blood marker called CA125 measured at more than twice the upper limit of normal on a specific approved laboratory test at the time of screening.
- People with a general health and activity level rated as 0 or 1 on a standard medical scale (meaning fully active or able to carry out light work).
- People who have cancer that can be measured or evaluated on imaging scans according to standard medical criteria.
- People whose blood counts are within acceptable ranges — specifically, a sufficient number of infection-fighting cells (neutrophils), platelets, and red blood cells (hemoglobin).
- People whose kidneys are functioning well enough, based on a standard calculation or a 24-hour urine test.
- People whose liver is functioning within acceptable ranges based on blood tests, with a specific exception allowed for people with a condition called Gilbert's Syndrome.
- People who are expected to live for at least 3 months without treatment.
- People who are willing to have tissue samples (biopsies) taken from a tumour before treatment starts, on day 28 of treatment, and at the end of treatment.
- People who could potentially become pregnant (those who have not had a hysterectomy, removal of both ovaries, tubal ligation, or at least 24 consecutive months of natural menopause) must have a negative pregnancy blood test at screening and before treatment begins, must agree not to breastfeed during the study and for at least 1 year after receiving the study treatment, and must agree to use effective contraception from the time of treatment until at least 1 year afterwards.
- People who are able and willing to attend all required study visits and follow all study requirements.
- People who understand the experimental nature of this study and sign an approved written consent form before any study procedures begin.
Who may not be able to join:
- People who have had significant bleeding (graded as moderate or higher) within the 30 days before screening.
- People whose blood clotting test results (aPTT or INR) fall outside acceptable ranges at screening, unless they are on specific blood-thinning medications (heparin or warfarin) and their levels fall within a defined acceptable window.
- People who are currently taking full-dose blood thinners (anticoagulants) or clot-dissolving medications for treatment purposes, unless they are on a stable low preventative dose for at least 4 weeks with no bleeding complications.
- People who have had a stroke, mini-stroke (TIA), or bleeding in the brain within the 3 months before screening.
- People with known significant neurological conditions, such as untreated brain metastases, active epilepsy requiring ongoing medication, severe nerve or brain disorders, or psychosis.
- People with an active autoimmune disease (where the immune system attacks the body) that requires significant immune-suppressing medication within the past 6 months — though people with well-controlled, stable autoimmune conditions (such as Type 1 Diabetes on stable insulin, treated underactive thyroid, vitiligo, or resolved childhood asthma) may still be eligible (confirm with trial site).
- People who still have unresolved side effects from previous immunotherapy treatments that have not returned to near-normal levels at least 3 months before joining.
- People who have an ongoing serious bacterial, viral, or fungal infection that is not improving with treatment, or who require intravenous antibiotics at the time of screening.
- People who have had another active cancer within the past 2 years, except for certain treated skin cancers or early-stage cancers such as carcinoma in situ of the cervix or breast.
- People whose tumour is causing an urgent medical problem, such as a bowel blockage or major compression of blood vessels, that would prevent them from safely participating.
- People with significant heart conditions, including severe heart failure, poorly controlled chest pain, a heart attack within the past year, serious heart rhythm problems, a history of heart muscle inflammation (myocarditis), moderate-to-severe valve disease, poorly controlled high blood pressure, a history of hypertensive crisis, significant blood vessel disease, or cancer involvement around the heart lining.
- People whose heart pumping function (left ventricular ejection fraction) is below 40% on a heart scan.
- People with a blood protein marker (troponin) above the normal range, unless a heart specialist has reviewed and approved this (confirm with trial site).
- People with low blood oxygen levels (below 92%) while breathing normal room air.
- People with a known history of interstitial lung disease or active non-infectious lung inflammation within the past 5 years.
- People with significant fluid build-up around the heart, lungs, or abdomen that has needed draining for symptom relief within the 28 days before screening.
- People with other serious uncontrolled medical conditions — such as advanced liver disease, recent serious injury, or severe psychiatric illness — that the trial doctor believes could affect safety or the reliability of study results.
- People who have previously received any treatment targeting a protein called MUC16.
- People who have previously received a stem cell transplant from another person (allogeneic transplant).
- People who have previously received any cell therapy or gene therapy.
- People who have received high-dose steroid medications within 72 hours before the procedure to collect immune cells (leukapheresis) or before the study treatment infusion.
- People who have received non-steroid immune-suppressing medications within 2 weeks before leukapheresis.
- People who have received cancer treatments (such as chemotherapy) or radiation therapy within 2 weeks before leukapheresis.
- People who have received a live vaccine within 30 days before joining the trial.
- People with active or inadequately treated Hepatitis A (based on a specific antibody test), Hepatitis B (unless viral levels have been undetectable for at least 6 months with antiviral treatment), or Hepatitis C (unless the virus has been undetectable for at least 6 months).
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Emese Zsiros, MD, PhD, Roswell Park Comprehensive Cancer Center
Phone: 716-845-2300
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Maximum Tolerated Dose (MTD) - Cohort A; Number of DLTs in combined IV and IP infusions of GB-5267 - Cohort B
Can't join this trial?
Data last synced from ClinicalTrials.gov: 23 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.