Please assess the completion status of the following clinical trial:

Trial Title: Genetic Study of Brain Tumors in Young Children

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_ONLY
- Primary Purpose: None
- Time Perspective: CROSS_SECTIONAL
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
DISEASE CHARACTERISTICS:~* Histologically confirmed primary intracranial central nervous system tumor~  * Medulloblastoma~ * Primitive neuroectodermal tumor~ * Atypical teratoid/rhabdoid tumor~ * Choroid plexus carcinoma~* Potential enrollment on PBTC-001 therapeutic protocol~PATIENT CHARACTERISTICS:~Age:~* Under 3~Performance status:~* Not specified~Life expectancy:~* Not specified~Hematopoietic:~* Not specified~Hepatic:~* Not specified~Renal:~* Not specified~PRIOR CONCURRENT THERAPY:~Biologic therapy:~* Not specified~Chemotherapy:~* No prior chemotherapy~Endocrine therapy:~* Prior steroids allowed~Radiotherapy:~* No prior radiotherapy~Surgery:~* Not specified~Other:~* No concurrent investigational agents

- Gender: ALL
- Minimum Age: None
- Maximum Age: 3 Years
- Healthy Volunteers: f

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