Please assess the completion status of the following clinical trial:

Trial Title: Varenicline for the Treatment of Smokeless Tobacco

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~Subjects will be eligible to participate if they:~1. Are at least 18 years of age~2. Have used ST daily for the past 12 months (regular user)~3. Identify ST as their primary tobacco product~4. Are in general good health (determined by medical history and screening physical examination)~5. Has provided written informed consent to participate~6. Are able to participate in all aspects of the study~Exclusion Criteria:~Individuals will be excluded from study participation if they:~1. Are currently (in previous 30 days) using other behavioral or pharmacologic tobacco cessation programs (i.e., behavioral therapy, nicotine replacement therapy, clonidine, bupropion SR, or doxepin)~2. Have self-reported current, untreated depression or a Beck Depression Inventory (BDI-II) Score of ≥ 20~3. Have, as defined by the C-SSRS (Columbia-Suicide Severity Rating Scale);current non-specific suicidal thoughts, or have a lifetime history of a suicidal attempt (defined as potentially self-injurious act committed with at least some wish to die, as a result of act.)~4. History of psychosis or bipolar disorder~5. Are currently pregnant or lactating or is of childbearing potential and not willing to use any form of contraception~6. Have another member of their household already participating in this study~7. Are allergic to varenicline~8. Describe having a medical history of:~   * Unstable angina~  * Myocardial infarction within the past 3 months~  * Cardiac dysrhythmia other than medication-controlled atrial fibrillation or PSVT~  * Medically-treated or untreated hypertension with BP ≥ 200 systolic OR ≥ 100 diastolic~  * Have other medical or psychiatric conditions that would exclude the participant

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

Study Arms:
- varenicline (Type: ACTIVE_COMPARATOR): None
- Placebo (Type: PLACEBO_COMPARATOR): None

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