This study will assess the safety, tolerability and efficacy of desvenlafaxine succinate sustained release (DVS SR) in subjects with major depressive disorder.
The primary objective of this study is to investigate the efficacy, safety and tolerability of desvenlafaxine succinate sustained release (DVS SR) in Chinese, Taiwanese, South Korean, and Indian subjects with major depressive disorder (MDD) receiving daily doses of 50 mg, 100 mg, or 200 mg. The secondary objective is to obtain additional information regarding the efficacy of DVS SR in subjects with MDD receiving daily doses of 50 mg, 100 mg, or 200 mg. Additional objectives include obtaining general and functional quality of life outcome data.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
807
Arm 1: 50mg DVS SR tablet, QD, 8 weeks treatment with 2 week taper Arm 2: 100mg DVS SR tablet, QD, 8 weeks treatment with 2 week taper Arm 3: 200mg DVS SR tablet, QD, 8 weeks treatment with 2 week taper
20 mg Paroxetine capsule, QD, 8 weeks treatment with 2 week taper
Percentage of Responders With a 50% or Greater Decrease From Baseline on the Hamilton Rating Scale for Depression, 17-item (HAM-D17)
HAM-D17 is a standardized, clinician-administered rating scale that assesses 17 items characteristically associated with major depression. Items are scored on either a 3 point (0 to 2) or a 5 point scale (0 to 4), with 0=none/absent and 4=most severe, for a maximum total score of 50.
Time frame: 8 weeks
Clinical Global Impressions Scale-Improvement (CGI-I) Scores
CGI-I is a global rating scale that measures disease improvement. Using a 7-point scale, the clinician rates how much the subject's illness has improved or worsened relative to the baseline status (1= very much improved; 7= very much worse).
Time frame: 8 weeks
Clinical Global Impressions Scale-Severity of Illness (CGI-S) Scores
CGI-S is a global rating scale that measures the severity of a subject's disease. Using a 7-point scale, the clinician rates the severity of the patient's mental illness at the time of the assessment, relative to the clinician's experience with subjects who have the same diagnosis (1= normal, not at all ill; 7= among the most extremely ill).
Time frame: 8 weeks
Montgomery and Asberg Depression Rating Scale (MADRS) Total Score Mean Change From Baseline
Measures the overall severity of depressive symptoms. The MADRS has a 10-item checklist. Items are rated on a scale of 0-6, for a total score range of 0 (low severity of depressive symptoms) to 60 (high severity of depressive symptoms).
Time frame: Baseline and 8 weeks
Visual Analog Scale-pain Intensity (VAS-PI) Score Mean Change From Baseline
The VAS-PI is a self-rated visual analog scale for the assessment of pain. Scores on the VAS-PI range from 0 (no pain) to 10 (worst possible pain). A decrease in VAS-PI overall scores indicates a subject's assessment of an improvement in pain.
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Unnamed facility
Beijing, China
Unnamed facility
Beijing, China
Unnamed facility
Guangdong Province, China
Unnamed facility
Hunan Province, China
Unnamed facility
Jiangsu Province, China
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Shanghai, China
Unnamed facility
Shanghai, China
Unnamed facility
Shanxi Province, China
Unnamed facility
Sichuan Province, China
Unnamed facility
Yunnan Province, China
...and 33 more locations
Time frame: 8 weeks
Hamilton Rating Scale for Depression, 6-item (HAM-D6) Score Mean Change From Baseline
HAM-D6: standardized, clinician-administered rating scale is a subset of the HAM-D17 that assesses 6 items associated with major depression. The scale uses HAM-D17 items 1, 2, 7, 8, 10 and 13. Item 13 is scored 0 to 2 (0=none/absent to 2=most severe) and all others are scored 0 to 4 (0=none/absent to 4=most severe). Total score ranges from 0 to 22; higher score indicates more depression.
Time frame: 8 weeks
Covi Anxiety Scale Score Mean Change From Baseline
Covi anxiety scale measures the severity of anxiety symptoms on 3 items: verbal report, behavior and somatic complaints. Each dimension is assessed using a 5-point scale: 1 = not at all, 2 = somewhat, 3 = moderately, 4 = considerably, 5 = Very much. Total score ranges from 3 to 15; higher score indicates more anxiety.
Time frame: 8 weeks