RATIONALE: Antineoplastons are naturally occurring substances that may also be made in the
laboratory. Antineoplastons may inhibit the growth of cancer cells.
PURPOSE: This phase II trial is studying how well antineoplaston therapy works in treating
children with visual pathway glioma.
- Determine the antitumor activity of antineoplastons A10 and AS2-1 in children with
visual pathway glioma by determining the proportion of patients who experience an
objective tumor response.
- Evaluate the adverse effects of and tolerance to this regimen in these patients.
OUTLINE: This is an open label study.
Patients receive gradually escalating doses of intravenous antineoplastons A10 and AS2-1 6
times per day until the maximum tolerated dose is reached. Treatment continues for at least
12 months in the absence of disease progression and unacceptable toxicity. After 12 months,
patients with responding or stable disease may continue treatment.
Tumors are measured every 8 weeks during the first 2 years, every 3 months during the third
and fourth years, every 6 months during the fifth and sixth years, and yearly thereafter.
PROJECTED ACCRUAL: Approximately 20-40 patients will be accrued for this study.
- Histologically confirmed (unless medically contraindicated) visual pathway glioma
that is unlikely to respond to existing therapy and for which no curative therapy
- Evidence of tumor by MRI or CT scan
- Tumor must be at least 5 mm
- No brain stem tumors
- 6 months to 17 years
- Karnofsky 60-100%
- At least 2 months
- WBC at least 2000/mm3
- Platelet count greater than 50,000/mm3
- Bilirubin no greater than 2.5 mg/dL
- SGOT/SGPT no greater than 5 times upper limit of normal
- No hepatic failure
- Creatinine no greater than 2.5 mg/dL
- No renal insufficiency
- No history of renal conditions that contraindicate high dosages of sodium
- No severe heart disease
- No uncontrolled hypertension
- No history of congestive heart failure
- No other cardiovascular conditions that contraindicate high dosages of sodium
- No severe lung disease
- Not pregnant or nursing
- Fertile patients must use effective contraception during and for 4 weeks after study
- No serious active infections or fever
- No other serious concurrent disease
PRIOR CONCURRENT THERAPY:
- At least 4 weeks since prior immunotherapy and recovered
- No concurrent immunomodulating agents
- At least 4 weeks since prior chemotherapy and recovered (6 weeks for nitrosoureas)
- No concurrent antineoplastic agents
- Concurrent corticosteroids for cerebral edema allowed (must be on stable dose for at
least 1 week prior to study)
- At least 8 weeks since prior radiotherapy and recovered
- Not specified
- No prior antineoplaston therapy