Methotrexate and Etoposide Infusions Into the Fourth Ventricle in Children With Recurrent Posterior Fossa Brain Tumors

  • STATUS
    Recruiting
  • End date
    Nov 3, 2022
  • participants needed
    10
  • sponsor
    The University of Texas Health Science Center, Houston
Updated on 25 February 2022

Summary

The goal of this clinical research study is to establish the safety of simultaneous infusions of methotrexate and etoposide into the fourth ventricle of the brain or resection cavity in patients with recurrent malignant posterior fossa brain tumors. These tumors include medulloblastoma, ependymoma, atypical teratoid/rhabdoid tumor or other malignant brain tumor with recurrence or progression involving anywhere in the brain and/or spine. Patients' disease must have originated in the posterior fossa of the brain.

Description

If the participant is eligible to take part in this study, the participant will have surgery to place a catheter into the Ommaya reservoir. The Ommaya reservoir is a catheter system that allows drugs to be administered directly to parts of the brain. This catheter will be used for the infusion of methotrexate and etoposide directly into the 4th ventricle of the brain, which is 1 of the 4 connected fluid-filled cavities in the brain.

If the study doctor thinks it is necessary, based on the location of the tumor, the tumor may also be removed while the participant is already under anesthesia just before the catheter is placed.

Study Drug Administration:

The participant will receive twice weekly 4 mg intraventricular methotrexate infusions for six consecutive weeks and daily 1 mg intraventricular etoposide infusion five times per week, every 2 weeks. Etoposide will be administered on weeks 1, 3, and 5.

Methotrexate and Etoposide will be infused though the ommaya reservoir catheter directly into the 4th ventricle of the brain starting at a minimum of 7 days after the catheter placement surgery. A MRI will be done to confirm adequate cerebrospinal fluid flow. The etoposide infusion will last 3-4 minutes and the methotrexate infusion will last 3 minutes.

If the participant already has an Ommaya catheter, methotrexate and etoposide will begin after an MRI has confirmed adequate cerebrospinal fluid flow.

Study Visits:

Prior to first infusion:

Medical history will be reviewed and any updates to health will be recorded. Physical and Neurological exam with vital signs will be done. Blood (about 1 teaspoon) will be drawn for routine test. A lumbar puncture will be done. A MRI scan of the brain and spine will be done to check the status of the disease.

On the days of the Methotrexate and Etoposide Infusion:

A neurological exam with vital signs will be done. A Ommaya reservoir tap (a catheter is placed into the Ommaya reservoir to give the methotrexate and etoposide infusion.

Cerebrospinal fluid (about 1 teaspoon) will be collected for routine tests.

Within 7 days of completing the Final infusion:

A neurological exam with vital signs will be done. A lumbar puncture and lab work will be done. A MRI scan of the brain and spine will be done to check status of the disease.

Length of Study:

The participant will receive 12 infusions of Methotrexate 4 mg and 15 infusions of Etoposide 1 mg, as long as the doctor thinks it is in their best interest. The participant will no longer be able to receive the study drug if the disease gets worse, if intolerable side effects occur, or if unable to follow study directions.

This is an investigation study. Methotrexate is FDA approved and commercially available for infusion directly into brain tumors. The infusion of methotrexate into the 4th ventricle of the brain in investigational. Etoposide is FDA approved and commercially available to be given by mouth or into the bloodstream (intravenously) but has never been given in the 4th ventricle of the brain. The infusion of methotrexate and etoposide into the 4th ventricle of the brain is investigational.

Up to 10 patients will be enrolled in this study. All will be enrolled at Children's Memorial Hermann Hospital.

Details
Condition Brain Tumor Recurrent
Treatment methotrexate, etoposide, Ommaya Reservoir
Clinical Study IdentifierNCT02905110
SponsorThe University of Texas Health Science Center, Houston
Last Modified on25 February 2022

Eligibility

Yes No Not Sure

Inclusion Criteria

Age 1 - 80 years at time of recurrence or progression
Diagnosis: Patients with histologically verified medulloblastoma, ependymoma, or atypical teratoid/rhabdoid tumor or other malignant brain tumor with recurrence or progression involving anywhere in the brain and/or spine. To be eligible, patients' disease must have originated in the posterior fossa of the brain
Patient must have either measurable or evaluable tumor as assessed by MRI of the brain and total spine
An implanted catheter in the fourth ventricle or posterior fossa tumor cavity attached to an Ommaya reservoir or agreement to have one placed
A minimum of 7 days between last dose of systemic chemotherapy and/or radiation therapy and first infusion of chemotherapy into fourth ventricle
Life expectancy of at least 12 weeks in the opinion of the PI
Lansky score of 50 or greater if 16 years of age or Karnofsky score of 50 or greater if > 16 years of age
Existing neurological deficits must have been stable for a minimum of 1 week prior to study enrollment
Patients must have recovered from the acute toxic effects of all prior anticancer chemotherapy
Adequate bone marrow function defined by peripheral absolute neutrophil count (ANC) 500/L, platelet count 50,000/L (transfusion independent), and hemoglobin 9.0 gm/dL (may receive Red Blood Cell transfusions)
Patient or patient's legal representative, parent(s), or guardian able to provide written informed consent

Exclusion Criteria

Enrolled in another treatment protocol
Has received another investigational or chemotherapy agent or radiation therapy within 7 days prior to intraventricular chemotherapy infusions
Evidence of untreated infection
Pregnant or lactating women
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