Please assess the completion status of the following clinical trial:

Trial Title: Efficacy and Safety of Vedolizumab Subcutaneously (SC) as Maintenance Therapy in Ulcerative Colitis

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~1. Diagnosis of ulcerative colitis (UC) established at least 6 months prior to screening, by clinical and endoscopic evidence and corroborated by a histopathology report.~2. Moderately to severely active UC as determined by a complete Mayo score of 6-12 (with an endoscopic subscore ≥2)~3. Evidence of UC extending proximal to the rectum (≥15 cm of involved colon).~4. Inadequate response with, loss of response to, or intolerance to corticosteroids, immunomodulators, or Tumor Necrosis Factor-alpha (TNF-α) antagonists~Exclusion Criteria:~1. Evidence of abdominal abscess or toxic megacolon at the initial Screening Visit.~2. Extensive colonic resection, subtotal or total colectomy.~3. Ileostomy, colostomy, or known fixed symptomatic stenosis of the intestine.~4. Prior exposure to investigational or approved non-biologic therapies (eg, cyclosporine, tacrolimus, thalidomide, methotrexate or tofacitinib) for the treatment of underlying disease within 30 days or 5 half-lives of screening (whichever is longer).~5. Prior exposure to any investigational or approved biologic or biosimilar agent within 60 days or 5 half-lives of screening (whichever is longer).~6. Prior exposure to vedolizumab~7. Surgical intervention for UC required at any time during the study.~8. History or evidence of adenomatous colonic polyps that have not been removed or has a history or evidence of colonic mucosal dysplasia.~9. Suspected or confirmed diagnosis of Crohn's entercolitis, indeterminate colitis, ischaemic colitis, radiation colitis, diverticular disease associated with colitis, or microscopic colitis.~10. Active infections~11. Chronic hepatitis B virus (HBV) infection or chronic hepatitis C virus (HCV) infection, HIV or tuberculosis (active or latent), identified congenital or acquired immunodeficiency. HBV immune participants (ie, being hepatitis B surface antigen \[HBsAg\] negative and hepatitis B antibody positive) may, however, be included.~12. History of any major neurological disorders, including stroke, multiple sclerosis, brain tumor, demyelinating or neurodegenerative disease.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Maintenance Phase: Induction IV + Vedolizumab 108 mg SC (Type: EXPERIMENTAL): Participants received vedolizumab 300 mg IV infusion in open-label induction phase and achieved clinical response at Week 6 were randomized to receive vedolizumab SC in maintenance phase. Vedolizumab SC, 108 mg, injection, Q2W and placebo-matching IV infusions, Q8W, starting at Week 6 up to approximately Week 50.
- Maintenance Phase: Induction IV + Vedolizumab 300 mg IV (Type: EXPERIMENTAL): Participants received vedolizumab 300 mg IV infusion in open-label induction phase and achieved clinical response at Week 6 were randomized to receive vedolizumab IV in maintenance phase. Vedolizumab 300 mg, IV infusion, Q8W and placebo-matching SC injection, Q2W starting at Week 6 up to approximately Week 50.
- Maintenance Phase: Induction IV + Placebo (Type: EXPERIMENTAL): Participants received vedolizumab 300 mg IV infusion in open-label induction phase and achieved clinical response at Week 6 were randomized to receive placebo in maintenance phase. Placebo-matching subcutaneous (SC) injections, once every 2 weeks (Q2W) and placebo-matching IV infusions, once every 8 weeks (Q8W) starting at Week 6 up to approximately Week 50.

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

Answer: outcome: complete