Sequential CD146 and GPC3 CAR-T Cell Therapy in Advanced Ovarian Cancer
Trial statusRecruiting
Trial phasePhase 1, Phase 2
Trial typeInterventional
Biological sexAll
Age21-90
SponsorEssen Biotech
About this trial
This is a multicenter, open-label Phase 1/2 clinical trial evaluating the safety and preliminary efficacy of sequentially administered CD146-targeted and GPC3-targeted CAR-T cell therapy in patients with advanced relapsed or refractory ovarian cancer. Eligible patients will undergo lymphodepleting chemotherapy with cyclophosphamide and fludarabine, followed by an infusion of autologous CD146-directed CAR-T cells (Arm A) and a subsequent infusion of autologous GPC3-directed CAR-T cells (Arm B). The Phase 1 portion will assess safety, tolerability, and dose-limiting toxicities (DLTs) to determine a recommended Phase 2 dose, while the Phase 2 portion will evaluate efficacy endpoints including objective response rate (ORR), progression-free survival (PFS), and overall survival (OS). Patients will be followed for up to 36 months after CAR-T infusion to monitor long-term outcomes and adverse events.
Eligibility criteria
Qualifiers
Expected survival time ≥3 months;
Diagnosis: Histologically or cytologically confirmed epithelial ovarian carcinoma (including fallopian tube or primary peritoneal carcinoma considered as ovarian cancer) that is relapsed or refractory to standard therapies. Patients must have received and progressed on or after at least one line of platinum-based chemotherapy (or be platinum-resistant) and have no curative standard treatment options.
Target Antigen Expression: Tumor must demonstrate positive expression of CD146 and GPC3 by immunohistochemistry (IHC) on a recent tumor tissue sample. Expression of both targets is required for eligibility (to ensure the presence of the CAR-T targets in the patient's cancer).
Disease Status: Measurable disease as defined by RECIST 1.1 criteria (at least one measurable lesion on imaging).
Disqualifiers
Prior Therapy: Previous treatment with any CAR-T cell therapy or other gene-engineered T-cell therapy targeting CD146 or GPC3. (Patients who received prior immunotherapies such as checkpoint inhibitors are allowed if a washout period is met, but prior CAR-T could confound results or pose increased risk.)
CNS Involvement: Active central nervous system (CNS) metastases or carcinomatous meningitis. (Patients with a history of CNS metastases that have been effectively treated and are radiographically stable off steroids may be eligible, per protocol specifics.)
Comorbid Illness: Uncontrolled intercurrent illness including, but not limited to, active uncontrolled infection, clinically significant heart failure (e.g. NYHA Class III-IV), unstable angina or arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. (Patients with controlled chronic conditions may be eligible at the investigator's discretion.)
Immunosuppression: Active hepatitis B or C infection with viremia, or known HIV infection with uncontrolled viral load. Patients requiring chronic systemic immunosuppressive therapy (e.g. for an autoimmune condition or organ transplant) are excluded, except for physiologic dose steroids.
Trial design
Treatments tested in this trial
- GPC3 CD146 CAR-T cells
Treatment groups
80 Participants
are divided into 1 treatment groupSponsors and collaborators
Source ClinicalTrials.gov