Please assess the completion status of the following clinical trial:

Trial Title: A Stratified Sickle Event Randomized Trial (ASSERT)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* 16 to 65 years of age (inclusive)~* Male or female (not capable of becoming pregnant or using appropriate birth control)~* Medical history of sickle cell disease~* Have a history of at least two or more acute sickle-related painful crises requiring a visit to a medical facility within the preceding 12 months~Exclusion Criteria:~* Hemoglobin \<4 or \>11 g/dL~* On a chronic transfusion program~* Has significant active and poorly controlled (unstable) cardiovascular, neurologic, endocrine, hepatic, or renal disorders clearly unrelated to sickle cell disease

- Gender: ALL
- Minimum Age: 16 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

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