Venlafaxine ER Long-Term Extension Study for Major Depressive Disorder (MDD)

Any untoward medical occurrence in a participant who received study drug was considered an adverse event (AE), without regard to possibility of causal relationship. Treatment-emergent adverse events: those which occurred or worsened after baseline. An AE resulting in any of the following outcomes, was considered to be a serious adverse event: death; lifethreatening; initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect.

Clinical significant changes were pre-defined for systolic blood pressure (SBP), diastolic blood pressure (DBP) , and pulse rate (PR). An average value of 3 measurements in each visit meeting the following criteria for 3 consecutive visits was determined as clinical siginificant changes: DBP >= 90 mmHg with change from the baseline >= 10 mmHg; SBP >= 140 mmHg with change from the baseline >= 20 mmHg; PR >= 100 bpm with change from the baseline >= 15 bpm.

Clinical significant changes were pre-defined for each laboratory test based on the criteria: Red Blood Cell Count <0.8 x lower limit normal (LLN); Lymphocytes (%) <0.8 x LLN; Eosinophils (%) >1.2 x upper limit normal (ULN); Total Bilirubin >1.5 x ULN; Alanine Aminotransferase (ALT) >3.0 x ULN; Gamma glutamyl transferase (GGT) >3.0 x ULN; Uric Acid >1.2 x ULN; Cholesterol >1.3 x ULN; Low density lipoprotein (LDL) cholesterol >1.2 x ULN; Triglycerides >1.3 x ULN; Glucose >1.5 x ULN; Urine Glucose [qualitative (Qual)] >=1; Urine Protein (Qual) >=1; Urine Blood/Hemoglobin (Hgb) (Qual) >=1.

Clinically significant ECG findings included: corrected QT (QTc), QT interval corrected using the Bazett's formula (QTcB), and QT interval corrected using the Fridericia formula (QTcF)> 450 millisecond (ms), >480 ms, and >500 ms respsctively, change from baseline in QTc, QTcB, and QTcF >= 30 ms, and >= 60 ms, respectively.

C-SSRS is a participant rated questionnaire to assess suicidal ideation, suicidal behavior, actual attempts (yes or no responses), and intensity of ideation (rated 1=low severity to 5=high severity). Yes/No responses are mapped to Columbia Classification Algorithm of Suicide Assessment (C-CASA) categories: Completed suicide, suicide attempt, preparatory acts toward imminent suicidal behavior, suicidal ideation, and self-injurious behavior, or no suicidal intent. A participant could have a yes or no response in more than one category.

HAM-D17 is a standardized, clinician-administered rating scale that assesses 17 items characteristically associated with major depression (symptoms such as depressed mood, work and activities, sleep, suicide, psychomotor agitation/retardation, appetite, sexual interest, anxiety, and somatic symptoms). The items of the HAM-D17 are rated on a scale of 0 to 2 (8 items) or 0 to 4 (9 items), and the total score ranges from 0 to 52. Higher scores indicate more severe symptoms. Change from baseline: mean score at observation minus mean score at baseline.

CGI-S is a 7-point clinician rated scale to assess severity of participant's current illness state; range: 1=normal, not ill at all, 2=borderline mentally ill, 3=mildly ill, 4=moderately ill, 5=markedly ill, 6=severely ill, 7=among the most extremely ill patients. Higher scores reflect higher severity of current illness states. Change from baseline: mean score at observation minus mean score at baseline.

CGI-I is a 7-point clinician rated scale ranging from 1=very much improved, 2=much improved, 3=minimally improved, 4=no change, 5=minimally worse, 6=much worse, to 7=very much worse. Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. Scores above 4 reflect worsening of illness state as compared to baseline.

QIDS16-SR-J is a self-rated scale used in patients with major depressive disorder to measure the overall severity of depressive symptoms: 1) sad mood; 2) concentration; 3) self-criticism; 4) suicidal ideation; 5) interest; 6) energy/fatigue; 7) sleep disturbance (initial, middle, and late insomnia or hypersomnia); 8) decrease/increase in appetite/weight; and 9) psychomotor agitation/retardation. QIDS16-SR-J items are rated on a scale of 0 to 3, and the total score ranges from 0 to 27. Higher scores indicate more severe symptoms. Change from baseline: mean score at observation minus mean score at baseline.