Please assess the completion status of the following clinical trial:

Trial Title: PureGen: Radiographic Analysis of Fusion for ACDF

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

Eligibility Criteria:
Inclusion Criteria:~* Persistent neck and/or arm pain consistent to symptomatic cervical degenerative disc disease~* Moderate Neck Disability Index~* Unresponsive to conservative treatment for at least 6 weeks~Exclusion Criteria:~* More than 4 levels requiring surgical treatment~* Prior failed fusion surgery at the index level(s)~* Systemic or local infection in the disc or cervical spine, past or present~* Active systemic disease~* Osteoporosis, osteomalacia, or other metabolic bone disease that would significantly inhibit bone healing~* Known or suspected history of alcohol and/or drug abuse~* Involved in pending litigation or worker's compensation relating to the spine~* Pregnant or plans to become pregnant during the duration of the study~* Insulin-dependent diabetes mellitus~* Life expectancy less than study duration~* Any significant psychological disturbance that in the opinion of the Investigator could impair consent process or ability to complete self-assessment questionnaires~* BMI greater than 40~* Undergoing chemotherapy or radiation treatment, or chronic use of oral or injected steroids or prolonged use of non-steroidal anti-inflammatory drugs~* Known history of hypersensitivity or anaphylactic reaction to dimethyl sulfoxide (DMSO).

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

Study Arms:
- Cervical Degenerative Disc Disease (Type: None): Subjects suffering from symptoms of cervical degenerative disc disease in one to four contiguous levels between C3 and T1.

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