Please assess the completion status of the following clinical trial:

Trial Title: Novel Quantitative MRI for Axial Spondyloarthritis

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Active AS meeting the modified New York criteria~* BASDAI ≥ 4~* Elevated C-Reactive Protein~* ≥ 18 years old~* Initiation of TNFi treatment with CZP~Exclusion Criteria:~* Previous treatment with more than one biologics~* Biologic treatment within six-months (no more than 20% of group (n=4) for patients with previous biologic treatment)~* Non-response to previous anti TNF treatment~* Fibromyalgia or other reasons for back pain~* Pregnant patients~* Patients on \> 10mg of Prednisone per day

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Cases - Ankylosing Spondylitis Cohort (Type: None): 20 patients with ankylosing spondylitis (AS). Fifteen of these patients will be recruited from the Ankylosing Spondylitis clinic at the University of California, San Francisco. Five patients will be recruited from the Rheumatology clinic at the Cleveland Clinic. Observational with MRI.
- Controls - w/o Ankylosing Spondylitis (Type: None): 5 patients without AS and with no history of any arthritis or lower back pain in this study. These 5 patients will make up the control group of the study, which means that they will provide a benchmark of comparison for the results investigators obtain from the active AS group. 2 of these 5 patients will be recruited from Cleveland Clinic, and 3 will be recruited from UCSF. Observational with MRI

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