Adult Glioblastoma Clinical Trial
Official title:
A Phase I Study of Cytosine Deaminase-Expressing Neural Stem Cells in Combination With Oral 5-Fluorocytosine and Leucovorin for the Treatment of Recurrent High-Grade Gliomas
Verified date | September 2021 |
Source | City of Hope Medical Center |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This phase I trial studies the side effects and determines the best dose of genetically modified neural stem cells and flucytosine when given together with leucovorin for treating patients with recurrent high-grade gliomas. Neural stem cells can travel to sites of tumor in the brain. The neural stem cells that are being used in this study were genetically modified express the enzyme cytosine deaminase (CD), which converts the prodrug flucytosine (5-FC) into the chemotherapy agent 5-fluorouracil (5-FU). Leucovorin may help 5-FU kill more tumor cells. The CD-expressing neural stem cells are administered directly into the brain. After giving the neural stem cells a few days to spread out and migrate to tumor cells, research participants take a 7 day course of oral 5-FC. (Depending on when a research participant enters the study, they may also be given leucovorin to take with the 5-FC.) When the 5-FC crosses into brain, the neural stem cells convert it into 5-FU, which diffuses out of the neural stem cells to preferentially kill rapidly dividing tumor cells while minimizing toxicity to healthy tissues. A Rickham catheter, placed at the time of surgery, will be used to administer additional doses of NSCs every two weeks, followed each time by a 7 day course of oral 5-FC (and possibly leucovorin). This neural stem cell-based anti-cancer strategy may be an effective treatment for high-grade gliomas. Funding Source - FDA OOPD
Status | Completed |
Enrollment | 16 |
Est. completion date | October 7, 2017 |
Est. primary completion date | October 7, 2017 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Patient has had a prior, histologically-confirmed, diagnosis of a grade III or IV glioma (including glioblastoma, anaplastic oligodendroglioma, or anaplastic astrocytoma, gliosarcoma, anaplastic oligodendroglioma, or anaplastic oligoastrocytoma), or has a prior, histologically-confirmed, diagnosis of a grade II glioma and now has radiographic findings consistent with a high-grade glioma (grade III or IV) - Imaging studies show evidence of recurrent, supratentorial tumor(s). The presence of infratentorial tumor is allowed as long as the patient also has supratentorial disease that is amenable to resection or biopsy. - Patient's high-grade glioma has recurred or progressed after prior treatment with brain radiation and temozolomide - Patient has a Karnofsky performance status of >= 70% - Patient has a life expectancy of >= 3 months - Female patients of childbearing potential and sexually-active male patients must agree to use an effective method of contraception while participating in this study; women of childbearing potential must have a negative pregnancy test =< 2 weeks prior to registration - The patient must be in need of a craniotomy for tumor resection or a stereotactic brain biopsy for the purpose of diagnosis or differentiating between tumor progression versus treatment-induced effects following radiation therapy +/- chemotherapy - Based on the neurosurgeon's judgement, there is no anticipated physical connection between the post-resection tumor cavity and the cerebral ventricles - Absolute neutrophil count (ANC) >= 1500 cells/mm^3 - Platelet count >= 100,000 cells/mm^3 - Total bilirubin =< 2.0 mg/dl - Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT]) =< 4 times the institutional upper limit of normal - Serum creatinine =< the institutional upper limit of normal - There is no limit to the number of prior therapies - All subjects must have the ability to understand and the willingness to sign a written informed consent Exclusion Criteria: - Patient has anti-human leukocyte antigen (HLA) antibodies specific for HLA antigens expressed by the NSCs - Patient has not recovered from any toxicity of prior therapies; an interval of - At least 6 weeks must have elapsed since taking a nitrosourea-containing chemotherapy regimen - At least 4 weeks since completing a non-nitrosourea-containing cytotoxic chemotherapy regimen (except temozolomide: only an interval of 23 days is required from the last dose administered when patient has been recently treated with the standard temozolomide regimen of daily for 5 days, repeated every 28 days) - At least 2 weeks from taking the last dose of targeted agent - At least 4 weeks from the last dose of bevacizumab - Patient is unable to undergo a magnetic resonance imaging (MRI) - Patient is allergic to 5-FC, leucovorin, or 5-FU - Patient has chronic or active viral infections of the central nervous system (CNS) - Patient has a coagulopathy or bleeding disorder - Patient has an uncontrolled illness including ongoing or active infection - Patient is receiving any other investigational agents, or concurrent biological, chemotherapy, or radiation therapy - Patient has had prior therapy with neural stem cells - Patient is pregnant or breast feeding; pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is participating in this study - Patient has another active malignancy - Non-compliance; a patient has a serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the safety monitoring requirements and completion of treatment according to this protocol |
Country | Name | City | State |
---|---|---|---|
United States | City of Hope Medical Center | Duarte | California |
Lead Sponsor | Collaborator |
---|---|
City of Hope Medical Center | National Cancer Institute (NCI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Number of Participants With Dose Limiting Toxicities (DLTs) and Maximum Tolerated Dose (MTD) | Number of DLTs per dose level and the MTD/MFD. | Day 28 of course 1 | |
Primary | Number of Participants With Mechanical Issues With Repeat Administrations of NSCs Via Rickham | Number of participants with mechanical issues with repeat administrations of NSCs via Rickham. | 28 days after last infusion of NSCs, up to 6 months total | |
Secondary | Number of Participants Developing Antibodies Against NSCs | Development of a antibody response to the NSCs will be evaluated by flow cytometry. Data from assessing for possible development of NSC immunogenicity with repeat exposure will be presented in an exploratory fashion using descriptive statistics. | While receiving treatment, up to 6 months. | |
Secondary | Average Steady State Levels of 5-FC and 5-FU in the Brain | Pharmacokinetic (PK) data from the patients who undergo intracerebral microdialysis (dose level 4) will be summarized using descriptive statistics. All summaries will be exploratory in spirit. | Following the first dose of 5-FC, samples were collected every hour for 24 hours and then every 3 hours thereafter until the end of the 7-day course of 5-FC or until the microdialysis catheter stopped functioning. | |
Secondary | Average Steady State Levels of 5-FC Concentrations in Plasma | PK data from the patients who undergo intracerebral microdialysis (dose level 4) will be summarized using descriptive statistics. | Samples were obtained prior to the first dose of 5-FC then every 30 minutes for 3 hours, additional samples at 4 and 6 hours after the morning doses on days 4, 5. On days 6, 7, 8 blood samples were collected just before morning dose and 90 minutes later | |
Secondary | Comparison of 5-FC in the Brain to 5-FC in the Plasma | PK data from the patients who undergo intracerebral microdialysis (dose level 4) will be summarized using the mean ratio of average brain interstitial 5-FC concentrations to the average steady-state plasma levels. | The ratio of average brain interstitial 5-FC and 5-FU concentrations to average plasma steady-state levels was calculated using all measured data. | |
Secondary | Summary of Tumor Response Using the Response Assessment in Neuro-Oncology (RANO) Criteria | Per RANO criteria:
Complete Response (CR): Complete disappearance of all enhancing disease that is sustained for at least 4 weeks, stable or improved non-enhancing FLAIR/T2 lesions, no new lesions, off corticosteroids, and neurologically stable or improved. Partial Response (PR): >= 50% decrease of all measurable enhancing lesions, sustained or at least 4 weeks, no progression of non-measurable disease, stable or improved non-enhancing FLAIR/T2 lesions, non new lesions, corticosteroid dose stable or reduced, and neurologically stable or improved. Stable Disease (SD): Dose not qualify for CR, PR, or PD, stable non-enhancing FLAIR/T2 lesions, stable or reduced corticosteroids, clinically stable. Progressive Disease (PD): >=25% increase in enhancing lesion despite stable or increasing steroid dose, increase (significant) in non-enhancing T2/FLAIR lesions that is not attributable to other non-tumor causes, any new lesions, clinical deterioration |
Up to 3 years post NSC infusion |
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