Please assess the completion status of the following clinical trial:

Trial Title: Trial of Dextromethorphan in Rett Syndrome

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE2
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~1. those who have classic or atypical RTT with a proven mutation in the MeCP2 gene;~2. those with documented EEG evidence of spike activity who may or may not have clinical seizures;~3. subjects must be between 2years -14.99 years of age.~Exclusion Criteria:~1. those without an established mutation in the MeCP2 gene;~2. those who do not have EEG evidence of spike activity;~3. those with mutations in the MeCP2 gene but who have had brain resection or surgical intervention; for example, tumor, hydrocephalus, severe head trauma; or, an associated severe medical illnesses such as vasculopathies, malignancies, diabetes, thyroid dysfunction, etc;~4. those on medications that could interact with DM, e.g. monoamine oxidase (MAO) inhibitors, selective serotonin reuptake inhibitor (SSRI), sibutramine etc. to avoid a serotonin syndrome; quinidine and drugs metabolized by the Cytochrome P450 (CYP450) isoform cytochrome P450 2D6 (CYP2D6) (e.g. amiodarone, haloperidol, propafenone, thioridazine);~5. those proven to be intermediate or slow metabolizers of DM;~6. those with reported adverse reactions to DM;~7. those whose pregnancy test is positive; and,~8. those showing poor compliance with any aspect of the study;~9. foster children

- Gender: ALL
- Minimum Age: 2 Years
- Maximum Age: 15 Years
- Healthy Volunteers: f

Study Arms:
- DM1( 0.25 mg/kg /day) (Type: EXPERIMENTAL): Dextromethorphan 0.25 mg/kg per day
- DM2 (2.5 mg/kg/day) (Type: EXPERIMENTAL): Dextromethorphan 2.5 mg/kg/day
- DM3 (5mg/kg/day) (Type: EXPERIMENTAL): Dextromethorphan 5mg/kg/day

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