This phase I trial tests the safety, side effects, and best dose of allogenic adipose-derived mesenchymal stem cells (AMSCs) in treating patients with glioblastoma or astrocytoma that has come back (recurrent) who are undergoing brain surgery (craniotomy). Glioblastoma is the most common and most aggressive form of primary and malignant tumor of the brain. Currently, the standard of care for this disease includes surgical resection, followed by radiation with chemotherapy and tumor treating fields. Despite this aggressive therapy, the survival after finishing treatment remains low and the disease often reoccurs. Unfortunately, the available therapy options for recurrent glioblastoma are minimal and do not have a great effect on survival. AMSCs are found in body fat and when separated from the fat, are delivered into the surgical cavity at the time of surgery. When in direct contact with tumor cells, AMSCs affect tumor growth, residual tumor cell death, and chemotherapy resistance. The use of AMSCs delivered locally into the surgical cavity of recurrent glioblastoma during a craniotomy could improve the long-term outcomes of these patients by decreasing the progression rate and invasiveness of malignant cells.
PRIMARY OBJECTIVE: I. To establish the maximum tolerated dose (MTD) of locally delivered adipose-derived mesenchymal stem cells (AMSCs) in patients with recurrent glioblastoma (GBM). SECONDARY OBJECTIVES: I. To assess the safety and toxicity profile of locally delivered AMSCs in patients with recurrent GBM. II. To assess overall survival (OS) in recurrent GBM patients treated with locally delivered AMSCs. III. To assess progression free survival (PFS) in recurrent GBM patients treated with locally delivered AMSCs. CORRELATIVE OBJECTIVES: I. To explore the systemic immune response after application of AMSCs through cytokine analysis on peripheral blood samples. II. To explore the local changes on the brain parenchyma by analyzing tissue at recurrence. III. To explore the presence of AMSCs on brain tissue at recurrence. OUTLINE: This is a dose-escalation study. Patients receive AMSCs intratumorally (IT) and undergo Ommaya reservoir placement during a craniotomy on study. Patients also undergo magnetic resonance imaging (MRI) on study and during follow-up, as well as blood sample, tissue sample and cerebrospinal fluid (CSF) sample collection on study. After completion of study treatment patients are followed up every 2 months for 1 year.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
20
Receive IT
Undergo blood and tissue sample collection
Undergo craniotomy
Undergo MRI
Undergo Ommaya reservoir placement for collection of CSF
Mayo Clinic in Florida
Jacksonville, Florida, United States
RECRUITINGMaximum tolerated dose (MTD)
Defined as the dose level below the lowest dose that induces dose-limiting toxicity in at least one-third of patients (at least 2 of a maximum of 6 new patients). Will use the standard cohort 3+3 design.
Time frame: Up to 4 weeks
Incidence of adverse events (AEs)
All patients who have received any treatment will be considered evaluable for assessing adverse event rates. The maximum grade for each type of adverse event will be recorded for each patient, and frequency tables will be reviewed to determine patterns. Additionally, the relationship of the adverse event(s) to the study treatment will be taken into consideration. Will follow the Common Terminology Criteria for Adverse Events version 5.0 to record and grade (1-5) any potential AEs.
Time frame: Up to 1 year
Best response
Best response per patient is defined to be the best objective status recorded from treatment application until disease progression or death (taking as reference for progressive disease the smallest measurements recorded since the treatment started). Best response assignment will depend on the achievement of both measurement and confirmation criteria.
Time frame: Up to 5 years
Response rate (RR)
RR is defined as the number of patients who have achieved complete response or partial response per immunotherapy response assessment for neuro-oncology for recurrent glioblastoma after application of allogeneic adipose-derived mesenchymal stem cells (AMSCs) divided by total number of evaluable patients. Responses will be summarized by simple descriptive summary statistics delineating complete and partial responses as well as stable and progressive disease in this patient population.
Time frame: Up to 5 years
Progression free survival
The quality of survival will be measured by performance status. The data on time-related variables will be summarized descriptively.
Time frame: From time of AMSCs application until the first occurrence of progression or death, assessed up to 5 years
Overall survival
The quality of survival will be measured by performance status. The data on time-related variables will be summarized descriptively.
Time frame: From beginning the time of AMSCs application to the date of death, assessed up to 5 years
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.