Please assess the completion status of the following clinical trial:

Trial Title: A Study of an Investigational Drug Sitagliptin for Type 2 Diabetes Mellitus (0431-044)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2
- Number of Arms: 5.0

Eligibility Criteria:
Inclusion Criteria:~* Patients with type 2 diabetes mellitus~Exclusion Criteria:~* Patients with type 1 diabetes mellitus

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: PLACEBO_COMPARATOR): Placebo QD 12-week
- 2 (Type: EXPERIMENTAL): 25 mg QD 12-week
- 3 (Type: EXPERIMENTAL): 50 mg QD 12-week
- 4 (Type: EXPERIMENTAL): 100 mg QD 12-week
- 5 (Type: EXPERIMENTAL): 200 mg QD 12-week

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