Please assess the completion status of the following clinical trial:

Trial Title: To Evaluate Effects of AZD1446, Placebo and Donepezil in Patients With Alzheimer's Disease

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 5.0

Eligibility Criteria:
Inclusion Criteria:~* Clinical diagnosis of probable Alzheimer´s Disease~* Hachinski Ischaemic score \< 4~* MSE score 18 to 24~Exclusion Criteria:~* History of any clinically significant disease or dementia other than Alzheimer´s Disease~* Current major depressive disorder or other major psychiatric disorders

- Gender: ALL
- Minimum Age: 55 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: EXPERIMENTAL): 2,5 mg once daily
- 2 (Type: ACTIVE_COMPARATOR): single dose of 5 mg
- 3 (Type: PLACEBO_COMPARATOR): None
- 4 (Type: EXPERIMENTAL): 60 mg once daily
- 5 (Type: EXPERIMENTAL): 60 mg three times daily

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