Please assess the completion status of the following clinical trial:

Trial Title: Collateral-based reSetting of Endovascular Treatment Time Window for Stroke (CoSETS)

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

Eligibility Criteria:
Inclusion Criteria:~* Acute ischemic stroke~* Age ≥ 19 years old~* Modified Rankin Scale score before qualifying stroke, 0 or 1~* Baseline National Institute of Health Stroke Scale, 5 or greater~* Baseline Alberta Stroke Program Early Computed Tomographic Sign, 6 or greater~* Documented occlusion of relevant intracranial internal carotid artery or middle cerebral artery M1 segment on multiphase CT angiogram~* Starting of endovascular treatment (femoral artery puncture) should be possible between 150 minutes and 600 minutes after last seen well time.~* Nonenhanced CT and multiphase CT angiogram should be obtained in the participating hospital~* If indicated, intravenous administration of tissue plasminogen activator should be given.~Exclusion Criteria:~* Femoral puncture is impossible~* Pregnancy or positive on serum beta-hCG test~* Known uncontrollable allergic reaction to iodized contrast media~* Intracranial cerebral artery dissection~* Suspected chronic occlusion of the relevant intracranial large artery~* In hospital stroke~* Bilateral internal carotid artery or middle cerebral artery occlusion~* Underlying severe medical or surgical disease which may affect treatment response.~* Clinical follow is impossible because of social or medical problems.

- Gender: ALL
- Minimum Age: 19 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Group 1: patients with good collateral (Type: NO_INTERVENTION): None
- Group 2a, patient with poor collaterals (Type: EXPERIMENTAL): Group 2 patients (poor collateral group) will be randomized into endovascular thrombectomy group (2a) and best medical treatment group (2b), if femoral puncture is possible between 150 minutes and 600 minutes after last seen well.
- Group 2b, patients with poor collaterals (Type: NO_INTERVENTION): Group 2 patients (poor collateral group) will be randomized into endovascular thrombectomy group (2a) and best medical treatment group (2b), if femoral puncture is possible between 150 minutes and 600 minutes after last seen well.

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