Background:
Ependymomas are rare tumors that arise from the ependyma. That is a tissue of the central
nervous system. They can develop in the brain or the spine. They are usually treated with
surgery, radiation, and/or chemotherapy. Researchers want to see if the new drug marizomib
can help people with a certain kind of ependymoma.
Objective:
To see if marizomib stops tumor growth and prolongs the time that the tumor is controlled.
Eligibility:
Adults age 18 and older who have been diagnosed with ependymomas and have already been
treated with standard therapies
Design:
Participants will be screened with the following tests or recent results from similar tests:
- Medical history
- Physical exam
- Neurological assessment
- Electrocardiogram (EKG) to evaluate the heart
- Review of symptoms and ability to perform normal activities
- Computed tomographic scan (CT) or magnetic resonance imaging (MRI) to produce an image
of the brain or spine.
- Blood and urine tests
- Tests of tumor samples. Participants may have to have new tumor samples taken.
Participants will get the study drug in cycles. Each cycle is 4 weeks. Participants will have
up to 24 cycles.
Participants will get the study drug through a small plastic tube in a vein on days 1, 8, and
15 of each cycle.
During each cycle, some screening tests will be repeated.
Participants will answer questions about their general well-being and functioning.
About 4 5 weeks after finishing the study drug, participants will have a follow-up visit.
They will answer questions about their health, get a physical and a neurological exam, and
have blood tests. They may have an MRI or CT scan.
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Additional locations may be listed on ClinicalTrials.gov for NCT03727841.
See trial information on ClinicalTrials.gov for a list of participating sites.
Background:
- Ependymomas are rare primary brain tumors arising from radial glial stem cells. They
comprise 5.2% of all pediatric primary brain tumors and 1.9% of all adult primary brain
tumors.
- The standard therapy for newly diagnosed ependymoma is gross total resection followed by
radiation therapy. For anaplastic ependymoma, recurrence rate is high with a median
progression free survival (PFS) of 2.3 years.
- There are limited chemotherapy options for recurrent ependymomas, which have already
been irradiated. Therefore, there is an unmet need to target novel pathways for
treatment of ependymomas.
- About 70% of supratentorial ependymomas have a characteristic signature C11 orf95-V-Rel
Avian Reticuloendotheliosis Viral Oncogene Homolog A (RELA) fusion which drives
tumorigenesis in ependymomas by activating the nuclear factor kappa-light-chain-enhancer
of activated B cells (NF-KB) transcription pathway.
- Marizomib is a second-generation irreversible proteasome inhibitor which penetrates
across the blood-brain-barrier (BBB). It inhibits the activity of 20S proteasome in
glioma cells, activates caspases, builds up reactive oxygen species and thus induces
apoptosis. Marizomib blocks the NF-pathway by proteasome inhibition. Thus, it may have
an additional targeted therapeutic effect in the RELA-fusion molecular subgroup of
ependymomas.
Objective:
-To evaluate the efficacy of treatment with marizomib in RELA-fusion recurrent ependymoma and
non RELA-fusion recurrent ependymoma as measured by progression-free survival at 6 months
(PFS6).
Eligibility:
- Histologically proven intra-cranial or spinal ependymoma.
- Radiographic evidence of tumor progression
- Patients must be greater than or equal to 18 years old.
Patients must have had prior radiotherapy.
Design:
- This is a phase II study to determine the efficacy of marizomib in recurrent ependymoma.
- A novel 2-stage sequential design will be employed to conduct the trial for recurrent
ependymoma.
- In the first stage, we will enroll 18 patients with RELA-fusion ependymoma and if 4 or
more patients in Cohort 1 are progression free at 6 months, we will proceed to stage 2;
otherwise, we will terminate the trial and conclude that marizomib is not effective.
- In the second stage, we will enroll 32 patients with non RELA-fusion ependymoma.
- Patients will be treated with marizomib in cycles consistent of 28 days until disease
progression or a maximum of 24 cycles.
Lead OrganizationNational Cancer Institute
Principal InvestigatorMark R. Gilbert