Please assess the completion status of the following clinical trial:

Trial Title: A Pilot Study of Dextromethorphan for the Prevention and Treatment of Methotrexate Neurotoxicity

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Newly diagnosed acute lymphocytic leukemia (ALL), non-Hodgkin's lymphoma (NHL) or OS. Patients will be separately stratified and randomized by disease.~* Patients with history of seizures are eligible but will be stratified separately.~Exclusion Criteria:~* Patients taking monoamine oxidase inhibitors (MAOIs) will be excluded from the study, because of the risk of severe drug interactions.~* Pregnant or lactating women.

- Gender: ALL
- Minimum Age: 2 Years
- Maximum Age: 21 Years
- Healthy Volunteers: f

Based on this trial design, predict the completion outcome and termination type (if applicable).