The purpose of this study is to determine if TC-5214 or placebo (a tablet that looks like medicine tablet or capsule, but contains no active medicine) is safe and effective when taken for 52 weeks with another antidepressant medicine.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
813
Frequency of Patients Experiencing at Least One Adverse Event (AE)
The frequency of patients experiencing at least one AE during the randomized treatment or follow-up periods was calculated.
Time frame: Randomization (Week 0) to end of the follow-up period (Week 54)
Frequency of Patients Experiencing AEs That Resulted in Discontinuation of Investigational Product (IP)
The frequency of patients experiencing AEs that resulted in discontinuation of IP during the randomized treatment or follow-up periods was calculated.
Time frame: Randomization (Week 0) to end of the follow-up period (Week 54)
Frequency of Patients Experiencing Serious Adverse Events (SAEs)
The frequency of patients experiencing serious adverse events (SAEs) during the randomized treatment or follow-up periods was calculated.
Time frame: Randomization (Week 0) to end of the follow-up period (Week 54)
Sustained Efficacy at 3 Months, Defined as a Montgomery-Asberg Depression Rating Scale (MADRS) Total Score of ≤12 at Week 12 and All Visits up to and Including Week 24
The percentage of patients with a a MADRS total score of ≤12 at Week 12 and all visits up to and including Week 24 was calculated. One intermediate occurrence of a MADRS total score \>12 but ≤16 or missing was allowed from Week 16 to Week 20. A 10-item scale for the evaluation of depressive symptoms. Each MADRS item is rated on a 0 to 6 scale. The MADRS total score is calculated as the sum of the 10 individual item scores; the total score can range from 0 to 60. Higher MADRS scores indicate higher levels of depressive symptoms.
Time frame: Week 12 to Week 24
Sustained Efficacy at 9 Months, Defined as a MADRS Total Score of ≤12 at Week 12 and at All Visits up to and Including Week 52
The percentage of patients with a MADRS total score of ≤12 at Week 12 and at all visits up to and including Week 52 was calculated. Two intermediate occurrences (not consecutive) of a MADRS \>12 but ≤16 or missing were allowed from Week 16 to Week 48. A 10-item scale for the evaluation of depressive symptoms. Each MADRS item is rated on a 0 to 6 scale. The MADRS total score is calculated as the sum of the 10 individual item scores; the total score can range from 0 to 60. Higher MADRS scores indicate higher levels of depressive symptoms.
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Research Site
Birmingham, Alabama, United States
Research Site
Tuscaloosa, Alabama, United States
Research Site
Tucson, Arizona, United States
Research Site
Little Rock, Arkansas, United States
Research Site
Arcadia, California, United States
Research Site
Beverly Hills, California, United States
Research Site
Carson, California, United States
Research Site
Cerritos, California, United States
Research Site
Chino, California, United States
Research Site
Costa Mesa, California, United States
...and 84 more locations
Time frame: Week 12 to Week 52
Change in the Clinician-rated Global Outcome of Severity as Measured by the Clinical Global Impression-Severity (CGI-S) Score From Randomization (Week 0) to End of Treatment (Week 52)
A 3-part, clinician-administered scale that rates the improvement or worsening of the patient's illness from randomization (baseline). Each item is scored on a 1 to 7 scale. Higher CGI-S scores indicate greater illness severity.
Time frame: Randomization (Week 0) to end of treatment (Week 52)
Change in Functional Impairment From Randomization (Week 0) to End of Treatment (Week 52) as Measured by the Sheehan Disability Scale (SDS) Total Score
Sheehan Disability Scale (SDS) is 5-item, self-administered scale that measures the extent a patient is impaired by their disease. Higher scores indicate more severe impairment. The SDS total score is calculated as the sum of the score for the 3 inter-correlated domains (school/work, social life, and family life/home responsibilities) and ranges from 0 (unimpaired) to 30 (highly impaired).
Time frame: Randomization (Week 0) to end of treatment (Week 52)
Change in Overall Quality of Life and Satisfaction From Randomization (Week 0) to End of Treatment (Week 52) by Assessing the Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form (Q-LES-Q-SF) % Maximum Total Score
The Q-LES-Q-SF total score is derived by summing item scores 1 to 14. Higher scores are indicative of greater enjoyment or satisfaction in each domain. The Q-LES-Q-SF % maximum total score is calculated as 100% × (Q-LES-Q-SF total score - 14) / 56, and can range from 0% to 100%.
Time frame: Randomization (Week 0) to end of treatment (Week 52)
Change in EuroQol - 5 Dimensions (EQ-5D) From Randomization (Week 0) to End of Treatment (Week 52)
A self-assessment questionnaire that provides 2 measures of health status. The EQ-5D index score is a weighted linear combination over 5 dimensions of health status. The score for each of the 5 dimensions can range from 1 to 3, and an equation is used to calculate the EQ-5D index score. The EQ-5D index score can range from possible negative values to a maximum of 1.0. The EQ-VAS is a visual analog scale with a range of 0 to 100. For both variables, a higher score indicates a better health state.
Time frame: Randomization (Week 0) to end of treatment (Week 52)