Title

RP5063 in Subjects With Schizophrenia or Schizoaffective Disorder
REFRESH : Randomized Double-blind, Placebo-controlled, Multicenter Trial to Assess the Safety and Efficacy of RP5063 in Subjects With an Acute Exacerbation of Schizophrenia or Schizoaffective Disorder
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Study Participants

    234
The objective of this study is to evaluate the efficacy and safety of RP5063 relative to placebo for the treatment of schizophrenia or schizoaffective disorder.
Study Started
Dec 31
2011
Primary Completion
Mar 31
2013
Study Completion
Mar 31
2013
Results Posted
Jan 26
2015
Estimate
Last Update
Jan 26
2015
Estimate

Drug RP5063

daily

Drug placebo

daily

Drug RP5063

daily

Drug RP5063

daily

Drug aripiprazole

daily

15mg RP5063 daily Experimental

30mg RP5063 daily Experimental

50mg RP5063 daily Experimental

Placebo Placebo Comparator

aripiprazole Active Comparator

aripiprazole 15 mg daily

Criteria

Inclusion Criteria:

Patients providing informed consent prior to any study specific procedures
Patients meeting Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) criteria for schizophrenia (paranoid type, disorganized type, catatonic type or undifferentiated type), or schizoaffective disorder
Patients with normal physical examination, laboratory, vital signs,and electrocardiogram (ECG)

Exclusion Criteria:

Patients with other primary psychiatric disorders as delirium, or bipolar I or II disorder

Summary

RP5063 15 mg

RP5063 30 mg

RP5063 50 mg

Aripiprazole 15 mg

Placebo

All Events

Event Type Organ System Event Term RP5063 15 mg RP5063 30 mg RP5063 50 mg Aripiprazole 15 mg Placebo

Measurement of Schizophrenia Symptoms: Positive and Negative Syndrome Scale (PANSS) Total Score

PANSS total score comprises Positive (Delusions, Conceptual disorganization, Hallucinatory behavior, Excitement, Grandiosity, Suspiciousness/persecution, Hostility), Negative (Blunted affect, Emotional withdrawal, Poor rapport, Passive/apathetic social withdrawal, Difficulty in abstract thinking, Lack of spontaneity and flow of conversation, Stereotyped thinking), and General Psychopathology (Somatic concern, Anxiety, Guilt feelings, Tension, Mannerisms and posturing, Depression, Motor retardation, Uncooperativeness, Unusual thought content, Disorientation, Poor attention, Lack of judgment and insight, Disturbance of volition, Poor impulse control, Preoccupation, Active social avoidance) Scales. Scores are obtained by adding the ratings of each item in each scale. Range is 7-49 for Positive and Negative scores; 16-112 for General Psychopathology score; and 30-210 for Total score. Higher score reflects worse outcome; larger reduction from baseline reflects better outcome.

RP5063 15 mg

Baseline

87.57
scores on a scale (Mean)
Standard Deviation: 13.30

Day 28

67.34
scores on a scale (Mean)
Standard Deviation: 21.98

RP5063 30 mg

Baseline

88.74
scores on a scale (Mean)
Standard Deviation: 13.37

Day 28

73.32
scores on a scale (Mean)
Standard Deviation: 20.24

RP5063 50 mg

Baseline

85.88
scores on a scale (Mean)
Standard Deviation: 14.86

Day 28

66.67
scores on a scale (Mean)
Standard Deviation: 19.66

Aripiprazole 15 mg

Baseline

91.68
scores on a scale (Mean)
Standard Deviation: 16.10

Day 28

82.37
scores on a scale (Mean)
Standard Deviation: 22.13

Placebo

Baseline

89.84
scores on a scale (Mean)
Standard Deviation: 15.60

Day 28

78.43
scores on a scale (Mean)
Standard Deviation: 24.14

Demonstrates Antipsychotic Efficacy as Assessed by Change From Baseline on the Clinical Global Impression Scale - Severity (CGI-S)

Clinical Global Impression, Severity (CGI-S) is a single-item (7-point) scale that evaluates the overall severity of the subject's mental illness. Scores range from 1 (not ill at all) to 7 (among the most extremely ill). A reduction in score indicates an improvement in the subject's condition.

RP5063 15 mg

Baseline

4.79
scores on a scale (Mean)
Standard Deviation: 0.56

Day 28

3.48
scores on a scale (Mean)
Standard Deviation: 1.22

RP5063 30 mg

Baseline

4.81
scores on a scale (Mean)
Standard Deviation: 0.77

Day 28

3.93
scores on a scale (Mean)
Standard Deviation: 1.24

RP5063 50 mg

Baseline

4.75
scores on a scale (Mean)
Standard Deviation: 0.71

Day 28

3.54
scores on a scale (Mean)
Standard Deviation: 1.05

Aripiprazole 15 mg

Baseline

4.84
scores on a scale (Mean)
Standard Deviation: 0.60

Day 28

4.53
scores on a scale (Mean)
Standard Deviation: 1.02

Placebo

Baseline

4.76
scores on a scale (Mean)
Standard Deviation: 0.55

Day 28

4.05
scores on a scale (Mean)
Standard Deviation: 1.27

Demonstrates Antipsychotic Efficacy as Assessed by Change From Baseline on the PANSS Positive Subscale

The Positive Scale includes 7 Items (Delusions, Conceptual disorganization, Hallucinations, Hyperactivity, Grandiosity, Suspiciousness/persecution, Hostility) and is calculated by adding the subscale item scores to obtain results ranging from 7 to 49. A higher score reflects worse outcome and a larger reduction in the score from baseline reflects better treatment efficacy.

RP5063 15 mg

Baseline

24.79
scores on a scale (Mean)
Standard Deviation: 4.21

Day 28

17.82
scores on a scale (Mean)
Standard Deviation: 7.95

RP5063 30 mg

Baseline

23.77
scores on a scale (Mean)
Standard Deviation: 4.66

Day 28

18.75
scores on a scale (Mean)
Standard Deviation: 7.27

RP5063 50 mg

Baseline

23.68
scores on a scale (Mean)
Standard Deviation: 4.73

Day 28

16.72
scores on a scale (Mean)
Standard Deviation: 6.66

Aripiprazole 15 mg

Baseline

25.42
scores on a scale (Mean)
Standard Deviation: 6.77

Day 28

23.47
scores on a scale (Mean)
Standard Deviation: 7.88

Placebo

Baseline

24.54
scores on a scale (Mean)
Standard Deviation: 3.78

Day 28

19.95
scores on a scale (Mean)
Standard Deviation: 6.84

Demonstrates Antipsychotic Efficacy as Assessed by Change From Baseline on the PANSS Negative Subscale

The Negative Scale includes 7 items (Blunted affect, Emotional withdrawal, Poor rapport, Passive/apathetic social withdrawal, Difficulty in abstract thinking, Lack of spontaneity and flow of conversation, Stereotyped thinking) and is calculated by adding the negative subscale item scores to obtain results ranging from 7 to 49. Minimum score is 7, maximum score is 49. A higher score reflects worse outcome and a larger reduction in the score from baseline reflects better treatment efficacy.

Placebo

Baseline

22.24
scores on a scale (Mean)
Standard Deviation: 6.34

Day 28

20.57
scores on a scale (Mean)
Standard Deviation: 6.64

RP5063 15 mg

Baseline

21.8
scores on a scale (Mean)
Standard Deviation: 5.63

Day 28

16.96
scores on a scale (Mean)
Standard Deviation: 5.11

RP5063 30 mg

Baseline

22.89
scores on a scale (Mean)
Standard Deviation: 5.25

Day 28

19.21
scores on a scale (Mean)
Standard Deviation: 5.92

RP5063 50 mg

Baseline

21.37
scores on a scale (Mean)
Standard Deviation: 5.91

Day 28

17.72
scores on a scale (Mean)
Standard Deviation: 5.89

Aripiprazole 15 mg

Baseline

22.53
scores on a scale (Mean)
Standard Deviation: 4.38

Day 28

19.47
scores on a scale (Mean)
Standard Deviation: 5.16

Demonstrates Antipsychotic Efficacy as Assessed by Change From Baseline on the PANSS General Psychopathology Subscale

The General Psychopathology Scale consists of 16 items (Somatic concern, Anxiety, Guilt feelings, Tension, Mannerisms and posturing, Depression, Motor retardation, Uncooperativeness, Unusual thought content, Disorientation, Poor attention, Lack of judgment and insight, Disturbance of volition, Poor impulse control, Preoccupation, Active social avoidance). The General Psychopathology score is obtained by adding the ratings of each item in the scale, with results ranging from 16 to 112. A higher score reflects worse outcome and a larger reduction in the score from baseline reflects better treatment efficacy.

RP5063 15 mg

Baseline

40.98
scores on a scale (Mean)
Standard Deviation: 7.30

Day 28

32.55
scores on a scale (Mean)
Standard Deviation: 11.26

RP5063 30 mg

Baseline

42.07
scores on a scale (Mean)
Standard Deviation: 7.08

Day 28

35.35
scores on a scale (Mean)
Standard Deviation: 10.12

RP5063 50 mg

Baseline

40.82
scores on a scale (Mean)
Standard Deviation: 7.61

Day 28

32.23
scores on a scale (Mean)
Standard Deviation: 9.79

Aripiprazole 15 mg

Baseline

43.74
scores on a scale (Mean)
Standard Deviation: 9.41

Day 28

39.42
scores on a scale (Mean)
Standard Deviation: 11.25

Placebo

Baseline

43.05
scores on a scale (Mean)
Standard Deviation: 8.36

Day 28

37.92
scores on a scale (Mean)
Standard Deviation: 13.03

Total

233
Participants

Age, Continuous

36
years (Mean)
Standard Deviation: 11

Ethnicity (NIH/OMB)

Race (NIH/OMB)

Region of Enrollment

Sex: Female, Male

Overall Study

RP5063 15 mg

RP5063 30 mg

RP5063 50 mg

Aripiprazole 15 mg

Placebo

Drop/Withdrawal Reasons

Placebo

RP5063 15 mg

RP5063 30 mg

RP5063 50 mg

Aripiprazole 15 mg