Pilot Study of B7-H3 CAR-T in Treating Patients With Recurrent and Refractory Glioblastoma

A Pilot Study of Chimeric Antigen Receptor (CAR) T Cells Targeting B7-H3 Antigen in Treating Patients With Recurrent and Refractory Glioblastoma

This is a pilot phase I study to evaluate the safety and efficacy on B7-H3 CAR-T in between Temozolomide cycles in treating patients with glioblastoma that has come back or does not respond to the standard treatment. The antigen B7-H3 is highly expressed in glioblastoma of a subset of patients. B7-H3 CAR-T, made from isolated patient peripheral blood mononuclear cells, can specifically attack patient glioblastoma cells that expressing B7-H3.

Study Overview

• Status: Unknown
• Conditions: Recurrent Glioblastoma; Refractory Glioblastoma
• Intervention / Treatment: Drug: B7-H3 CAR-T; Drug: Temozolomide

Detailed Description

Background

• B7-H3 is expressed in 70% of patients with glioblastoma
• B7-H3 is not expressed in normal tissues especially not in central nervous system. Therefore, it is an attractive GBM target for CAR-T therapy
• The investigators constructed a retroviral vector encoding a chimeric antigen receptor (CAR) targeting B7-H3, which can mediate CAR transfer into patient T cells with high efficiency.

Objectives

• To evaluate the safety and tolerability intratumoral/intracerebroventricular injection of B7-H3 CAR-T when used in between Temozolomide cycles
• To compare the overall survival (OS) and progression-free survival (PFS) of R/R GBM patients treated with B7-H3 CAR-T in between Temozolomide cycles to the historical Temozolomide data
• To access the pharmacokinetics and pharmacodynamics of B7-H3 CAR-T in between Temozolomide cycles

Design

Patients autologous T cells are activated and transduced with retrovirus containing B7-H3 CAR. CAR-T cells are expanded ex vivo and infused back to patients via intratumoral or intracerebroventricular injection through an Ommaya catheter. 3 injections of CAR-T are planned at two different doses with 1-2 weeks intervals. The CAR-T injections occur in between Temozolomide (TMZ) cycles. Temozolomide treatment in the cycle of CAR-T injections will be stopped and resumed next cycle. Patients may receive additional CAR-T cycles at the discretion of the principal investigator and oncologist.

• Study Type: Interventional
• Enrollment (Anticipated): 12
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Zhejiang
    • Hangzhou, Zhejiang, China, 310009
      • Recruiting
      • The Second Affiliated Hospital of Zhejiang University School of Medicine
      • Contact: Jianmin Zhang, MD; Phone Number: 86-13805722695; Email: 2307010@zju.edu.cn

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 71 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Documented informed consent of the participant and/or legally authorized representative.
• Histologically confirmed diagnosis of World Health Organization (WHO) classification grade IV glioblastoma (GBM).
• Clinical Pathology confirms B7-H3 positive tumor expression by immunohistochemistry (IHC) at the initial tumor presentation or recurrent disease (H-score >= 50).
• Relapsed/refractory disease confirmed by radiographic evidence after standard therapy.
• Suitable for the surgery of the placement of the Ommaya catheter.
• Eastern Cooperative Oncology Group (ECOG) =0 or 1 (need to be confirmed before intratumoral or intracerebroventricular injection)
• >= 8 weeks after completion of front-line radiation therapy
• >= 6 weeks after completion of nitrourea chemotherapy
• >= 14 days after completion of Temozolomide or other chemotherapy
• 2 weeks of wash-out time after completion of targeted therapy with related adverse events (AE) on baseline (4 weeks for Bevacizumab).
• Patients with other chronic AEs are in the investigator's judgement
• Blood cell count： White blood count (WBC) >= 2000/μL；Neutrophil count >= 1500/μL；Platelets >= 100 x 103/μL；Hemoglobin >= 9.0 g/dL
• Serum Creatinine <= 1.5×ULN or Creatinine Clearance Rate (Cockcroft and Gault) > 30 mL/min/1.73 m2
• Alanine Transaminase (ALT) <= 5×ULN and total bilirubin < 2.0mg/dL
• Lung function: Oxygen (O2) saturation >= 92% on room air and < CTCAE grade 1 dyspnea
• Heart function: Left ventricular ejection fraction (LVEF) >= 40% by multigated acquisition (MUGA) scan or echocardiogram
• Normal coagulation function: prothrombin time (PT)，activated partial thromboplastin time (APTT) and international normalized ratio (INR)
• Good blood vessel condition for leukapheresis
• Women of childbearing potential (WOCBP): negative urine or serum pregnancy test
• Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity within one year after B7-H3 CAR-T infusion

Exclusion Criteria:

• Other active malignancy in the past 2 years except non-melanoma skin cancer, completely surgical removed low grade tumor, posttherapeutic limited-stage prostate cancer, biopsy confirmed in situ cervical carcinoma, PAP test confirmed squamous intraepithelial lesions
• Participant is undergoing or planning to take other anti-tumor therapies
• Participant is systematic steroid-dependent, or is expecting to be treated with systematic steroid
• Active immunodeficiency virus (HIV) or hepatitis B or hepatitis C virus infection
• Active infection from fungi, bacteria and/or viruses
• Known history of the following cardiac diseases in the past 6 months:
• New York Heart Association (NYHA) defined grade III or IV heart failure, cardiac angioplasty, myocardial infarction, unstable angina and other clinically significant heart diseases
• Known history and/or clinically evident central nerve system diseases: seizure, epileptic seizure, aphasia, paralysis, stroke, severe brain damage, dementia, Parkinson's Disease, cerebellar diseases, organic brain syndrome and psychiatric disorders
• Autoimmune diseases
• Pregnant or breastfeeding females
• Therapeutic doses of corticosteroid within 7 days before leukapheresis or 72 hours before B7-H3 CAR-T infusion
• Cytotoxic chemotherapy without lymphocytotoxicity within 1 week before leukapheresis except that the treatment has been stopped for more than 3 half-lives of the drug
• Lymphocytotoxic chemotherapy (cyclophosphamide, Ifosfamide and bendamustine) within 2 weeks before leukapheresis
• Other clinical trials drugs within 4 weeks before leukapheresis except that the drug has no effect or the disease has progressed, and the treatment has been stopped for more than 3 half-lives of the drug
• Radiotherapy within 6 weeks before leukapheresis
• Prior trials of CAR-T or other cell therapy
• Any other condition that would, in the investigator's judgment, contraindicate the subject's participation in the clinical study due to safety concerns with clinical study procedures
• Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: B7-H3 CAR-T; Patients will received regular cycles of Temozolomide treatment with 5 days of treatment and 23 days of interval. 3 infusions of B7-H3 CAR-T with 1-2 weeks of interval will be used in between cycles of Temozolomide treatment. Temozolomide treatment during B7-H3 CAR-T infusions will be stopped and resumed after CAR-T infusion.

Drug: B7-H3 CAR-T; The B7-H3 CAR-T will be administrated via intratumoral or Intracerebroventricular injection through an Ommaya catheter in between Temozolomide cycles. Temozolomide will be stopped during the infusion of B7-H3 CAR-T; Other Names: BP102; Drug: Temozolomide; Temozolomide will be given to patients orally every 5 days with 23 days interval. The initial dose is 150 mg/m2 on the first day and 200 mg/m2 for the rest if no toxicity is seen. If 200 mg/m2 is toxic, the drug will return to 150 mg/m2 or will be stopped.; Other Names: TMZ

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence and type of adverse events	Number of Participants With Treatment-Related Adverse Events and Types of adverse events as Assessed by CTCAE v4.0	12 weeks
Maximum tolerated dose (MTD)	The highest dose of B7-H3 CAR-T that does not cause targeted dose limiting toxicity	12 weeks
Overall survival (OS)	Kaplan Meier methods will be used to estimate median OS	2 years, up to 15 years if necessary
Progression-free survival (PFS)	Kaplan Meier methods will be used to estimate median PFS. Progression is defined by Response Assessment in Neuro-Oncology (RANO) criteria	2 years, up to 15 years if necessary

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The pharmacokinetics (PK) of B7-H3 CAR-T	Peak Concentration (Cmax) of B7-H3 CAR-T in peripheral blood (PB) and cerebral spinal fluid (CSF)	12 weeks
The pharmacokinetics (PK) of B7-H3 CAR-T	Area under the concentration versus time curve (AUC) of B7-H3 CAR-T in peripheral blood (PB) and cerebral spinal fluid (CSF)	12 weeks
Disease response (ORR, CR, PR, DOR)	Objective Response Rate (ORR) will be assessed by comparison with baseline magnetic resonance imaging by RANO. Complete Response (CR) is disappearance of all measurable and non-measurable disease for at least 4 weeks. Partial Response (PR) is >/= 50% decrease in lesions for at least 4 weeks. Duration of Response (DOR) is the time between the initial response to the treatment and subsequent disease progression.	2 years, up to 15 years if necessary

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cytokine levels in PB and CSF	The concentration of cytokines (IL-1, IL-2, IL-6, IL-10, TNF-α, IFN-γ) in PB and CSF	12 weeks
T cell phenotype	The chimeric antigen receptor positive (CAR+) T cell and memory/effector T cell percentages and cell counts detected in peripheral blood (PB), and cerebral spinal fluid (CSF). Statistical and graphical methods will be used to describe persistence and expansion	12 weeks

Collaborators and Investigators

• Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University
• Collaborators: BoYuan RunSheng Pharma (Hangzhou) Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Anticipated): June 1, 2020
• Primary Completion (Anticipated): May 1, 2022
• Study Completion (Anticipated): July 1, 2022

Study Registration Dates

• First Submitted: February 4, 2020
• First Submitted That Met QC Criteria: May 11, 2020
• First Posted (Actual): May 12, 2020

Study Record Updates

• Last Update Posted (Actual): May 12, 2020
• Last Update Submitted That Met QC Criteria: May 11, 2020
• Last Verified: January 1, 2020

More Information

Terms related to this study

• Keywords: Glioblastoma; Chimeric Antigen Receptor (CAR)-T
• Additional Relevant MeSH Terms: Pathologic Processes; Neoplasms by Histologic Type; Neoplasms; Neoplasms, Glandular and Epithelial; Disease Attributes; Astrocytoma; Glioma; Neoplasms, Neuroepithelial; Neuroectodermal Tumors; Neoplasms, Germ Cell and Embryonal; Neoplasms, Nerve Tissue; Glioblastoma; Recurrence; Molecular Mechanisms of Pharmacological Action; Antineoplastic Agents; Antineoplastic Agents, Alkylating; Alkylating Agents; Temozolomide
• Other Study ID Numbers: SAHZJU-BP102

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No