A Phase I/II Clinical Study to Evaluate the Safety and Efficacy of P134 Cells in the Treatment of Recurrent Glioblastoma
Overview
- Phase
- Phase 1
- Status
- Recruiting
- Enrollment
- 26
- Locations
- 1
- Primary Endpoint
- Dose limiting toxicities (DLTs)
Overview
Brief Summary
This is an open-label, single-arm, dose-escalation and expansion Phase 1/2 clinical trial designed to evaluate the safety, tolerability and efficacy of P134 cells in patients with recurrent glioblastoma, to explore the maximum tolerated dose (MTD)and recommended Phase 2 dose (RP2D), and to characterize the cytokinetic profile of CAR-T cells in the cerebrospinal fluid of patients. Eligible participants are adults diagnosed with recurrent or progressive glioblastoma who are confirmed as grade 4 glioblastoma (IDH wild-type) by histopathology or molecular pathology.
P134 cells are CD44/CD133 dual-targeting CAR-T cells developed by the research team led by Academician Jiang Tao and Professor Zhang Wei from the Beijing Neurosurgical Institute and the Department of Neurosurgery, Beijing Tiantan Hospital. This study is spearheaded by Professor Zhang Wei of the Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, China, with scientific oversight and guidance provided by Academician Jiang Tao of the Chinese Academy of Engineering.
Study Design
- Study Type
- Interventional
- Allocation
- Na
- Intervention Model
- Single Group
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to 70 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Voluntary written informed consent.
- •18-70 years of age (inclusive), male or female.
- •Recurrent or progressive glioblastoma, histopathologically or molecularly diagnosed consistent with grade 4 glioblastoma (IDH wild-type) (refer to WHO Classification of Central Nervous System Tumors, 5th Edition, 2021).
- •Positive CD44 or CD133 antigen expression in tumor tissue confirmed by IHC, defined as ≥1% of tumor cells showing positive CD44 or CD133 IHC staining, regardless of intensity (applicable only in Phase II dose expansion study).
- •At least one measurable lesion meeting RANO 2.0 criteria and having a radiographically assessed measurable lesion ≤ 3 cm in longest diameter
- •Patient has received prior radiation therapy and/or temozolomide/bevacizumab.
- •The investigator confirmed that the patient was suitable for craniotomy cerebrospinal fluid shunt and accessory (Ommaya reservoir) implantation.
Exclusion Criteria
- •Highly allergic constitution or history of severe allergy, or allergy to related cell products
- •Receipt of biologic anti-tumor therapy (including monoclonal or bispecific antibody-targeted therapy, immune checkpoint inhibitor therapy, etc.) within 6 weeks prior to PBMC collection; receipt of radiotherapy or surgery within 4 weeks prior to PBMC collection (excluding placement of vascular access devices; a 1-week washout period is acceptable for diagnostic biopsy surgeries); receipt of chemotherapy, hormone therapy (excluding hormone replacement therapy), or non-specific immunomodulatory therapy (such as interleukins, interferons, thymosin, cyclophosphamide, methotrexate, tumor necrosis factor, etc.) within 2 weeks prior to PBMC collection; receipt of traditional Chinese medicine therapy with a clear anticancer indication within 1 week prior to PBMC collection.
- •The adverse reactions caused by previous anti-tumor treatment have not recovered to ≤ Grade 1 as evaluated by NCI CTCAE v6.0 (except alopecia, skin pigmentation, leukoplakia, etc. which are assessed as having no safety risk).
- •Tumor metastasis to the brainstem or spinal cord.
- •Suffering from other serious neurological diseases other than brain tumors, such as meningitis, encephalitis, myelitis and demyelination, myasthenic syndrome/myasthenia gravis, amyotrophic lateral sclerosis, spinal muscular atrophy, nerve paralysis, uncontrolled epilepsy, etc.
- •Patients with primary immunodeficiency disease, autoimmune diseases requiring medication (such as Crohn 's disease, ulcerative colitis, rheumatoid arthritis, systemic lupus), or previous history of autoimmune diseases of the nervous system (such as multiple sclerosis, Parkinson' s disease).
- •Receiving or requiring long-term use of immunosuppressive agents (except for physiological doses of systemic corticosteroids ≤ 10 mg/day prednisone equivalent, short-term ≤ 7 days corticosteroids for allergies, or topical glucocorticoids).
- •Trial participants who have a previous history of allogeneic bone marrow transplantation or organ transplantation, or are awaiting organ transplantation.
- •HBsAg positive and HBV DNA positive, HCV Ab positive and HCV RNA positive; Treponema pallidum antibody positive; human immunodeficiency virus (HIV) antibody positive.
- •Prior receipt of any gene therapy or cell therapy trial participant.
Arms & Interventions
P134 cell
Intervention: P134 cell injection (Biological)
Outcomes
Primary Outcomes
Dose limiting toxicities (DLTs)
Time Frame: From the first dose up to Day 28 post-first dose
Proportion of participants with dose-limiting toxicities (DLTs) as assessed by CTCAE version 6.0 in the dose-escalation phase
Adverse events (AEs)
Time Frame: Through study completion, an average of two and a half years
Incidence and severity of adverse events (safety and tolerability) as assessed by CTCAE version 6.0 in the dose-escalation phase.
Maximum tolerated dose (MTD)
Time Frame: From the first dose up to Day 28 after the first dose.
The highest dose level with less than 33% of participants experiencing dose-limiting toxicities (DLTs) as assessed by CTCAE version 6.0 in the dose-escalation phase.
Secondary Outcomes
- Recommended Phase 2 Dose (RP2D)(From study enrollment to Day 28 after the last dose of participants in the dose-escalation phase)
- Objective Response Rate (ORR)(Through study completion, an average of two and a half years)
- Disease Control Rate (DCR)(Through study completion, an average of two and a half years)
- Progression-Free Survival (PFS)(Through study completion, an average of two and a half years)
- Duration of Response (DOR)(Through study completion, an average of two and a half years)
- Time to Response (TTR)(Through study completion, an average of two and a half years)
- 1-year OS Rate(From study enrollment up to 12 months after study enrollment)
- Overall Survival(Through study completion, an average of two and a half years)