Title

Exploratory Study to Evaluate the Effect of SYN111 (Rufinamide) in Patients With Generalized Anxiety Disorder (GAD)
A Multi-Center,Randomized, Double-Blind, Placebo-Controlled, Phase 2, Exploratory Study to Evaluate the Effect of Rufinamide on Anxiety in Patients With Moderate to Severe Generalized Anxiety Disorder
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Intervention/Treatment

    rufinamide ...
  • Study Participants

    239
A Multi-Centered Randomized, Double-Blind, Placebo-Controlled, Phase 2, Exploratory Study to Evaluate the Effect of Rufinamide on Anxiety in Patients with Moderate to Severe Generalized Anxiety Disorder.
This was an exploratory study to evaluate the effect of 500 or 1000 mg per day for 8 weeks of Rufinamide compared to placebo on measures of anxiety in patients with Generalized Anxiety Disorder, and to determine tolerability of Rufinamide in this population.
Study Started
Mar 31
2008
Primary Completion
Oct 31
2008
Study Completion
Oct 31
2008
Results Posted
Jan 23
2019
Last Update
Feb 27
2019

Drug SYN111

500 mg for 1 week followed by 1000 mg for 7 weeks

  • Other names: Rufinamide

Drug Placebo

0 mg tablets

SYN111 Experimental

500 mg 1 week, followed by 1000 mg for 7 weeks

Placebo Placebo Comparator

0 mg tablets

Criteria

Inclusion Criteria:

Outpatient 18-65
Meet Diagnostic and Statistical Manual,(DSM) IV criteria for GAD
Have moderate to severe anxiety
Sign IRB (Institutional Review Board) approved consent and can comply with visits and procedures
Women of childbearing potential must use acceptable method of contraception

Exclusion Criteria:

Have diagnosis of adjustment disorder or anxiety disorder Not otherwise specified (NOS)
Have diagnosis of specific phobia
Have diagnosis of antisocial personality disorder or other Axis II Disorder
Have diagnosis of substance abuse disorder within 3 months of study entry
Have diagnosis of major depressive disorder or panic disorder within 6 months of study entry
Have diagnosis of PTSD, eating disorder substance dependence disorder within 12 months of study entry
Have diagnosis anytime during lifetime of schizophrenia or other psychotic disorder, bipolar mood disorder, Obsessive-Compulsive Disorder (OCD), psychosurgery
Require medication to treat GAD other than study medication
Failed to show improvement with past treatment for GAD
Excessively consume caffeine
Are receiving treatment with prohibited medications
Uncontrolled thyroid condition
Positive urine drug screen
Obese
Clinically significant ECG finding
Participating in other clinical trial
Clinically significant out of range lab value
Past exposure to rufinamide
Pregnant or nursing females

Summary

Rufinamide

Placebo

All Events

Event Type Organ System Event Term Rufinamide Placebo

Change From Baseline in Hamilton Anxiety Scale (HAMA) - Total Score: Summary Statistics - Observed

The Hamilton Anxiety Scale is a 14-item test measuring the severity of anxiety symptoms. It provides measures of overall anxiety, psychic anxiety (mental agitation and psychological distress), and somatic anxiety (physical complaints related to anxiety). The interviewer then rated the individuals on a 5-point scale for each of the 14 items. Seven of the items specifically address psychic anxiety and the remaining 7 items address somatic anxiety. The total anxiety score ranges from 0 to 56. The 7 psychic anxiety items elicit a psychic anxiety score that ranges from 0 to 28. The remaining 7 items yield a somatic anxiety score that also ranges from 0 to 28. A score of 17 or less indicates mild anxiety severity. A score from 18 to 24 indicates mild to moderate anxiety severity, a score of 25 to 30 indicates a moderate to severe anxiety and lastly a score of 31-56 is very severe. HAM-A total score is the sum of items 1 - 14.

Rufinamide

Baseline

25.5
score on a scale (Mean)
Standard Deviation: 3.77

Last Observation

16.7
score on a scale (Mean)
Standard Deviation: 7.91

Screening

25.5
score on a scale (Mean)
Standard Deviation: 3.70

Week 1

21.9
score on a scale (Mean)
Standard Deviation: 6.04

Week 2

20.0
score on a scale (Mean)
Standard Deviation: 6.29

Week 3

18.0
score on a scale (Mean)
Standard Deviation: 7.45

Week 6

15.7
score on a scale (Mean)
Standard Deviation: 7.34

Week 8

15.1
score on a scale (Mean)
Standard Deviation: 7.76

Placebo

Baseline

25.8
score on a scale (Mean)
Standard Deviation: 3.74

Last Observation

16.1
score on a scale (Mean)
Standard Deviation: 7.65

Screening

25.6
score on a scale (Mean)
Standard Deviation: 3.77

Week 1

21.4
score on a scale (Mean)
Standard Deviation: 5.71

Week 2

19.6
score on a scale (Mean)
Standard Deviation: 5.97

Week 3

17.8
score on a scale (Mean)
Standard Deviation: 7.02

Week 6

16.7
score on a scale (Mean)
Standard Deviation: 7.32

Week 8

15.1
score on a scale (Mean)
Standard Deviation: 7.19

Change From Baseline in Hospital Anxiety and Depression Scale (HADS). Summary Statistics

The Hospital Anxiety and Depression Scale is a self screening questionnaire for depression and anxiety. It consists of 14 questions, seven for anxiety and seven for depression. The 14 statements are relevant to either generalized anxiety (7 statements) or 'depression' (again 7). Each question has 4 possible responses. Responses are scored on a scale from 3 to 0. The maximum score is therefore 21 for depression and 21 for anxiety. A score of 11 or higher indicates the probable presence of the mood disorder with a score of 8 to 10 being just suggestive of the presence of the respective state. The 2 subscales, anxiety and depression, have been found to be independent measures. In its current form the HADS is now divided into 4 ranges: normal (0-7), mild (8-10), moderate (11-15) and severe (16-21). Anxiety score = sum of items 1, 3, 5, 7, 9, 11, and 13. Depression score = sum of items 2, 4, 6, 8, 10, 12, and 14.

Rufinamide

Last Observation

-1.2
score on a scale (Mean)
Standard Deviation: 3.74

Week 1

-0.2
score on a scale (Mean)
Standard Deviation: 2.66

Week 2

-0.4
score on a scale (Mean)
Standard Deviation: 2.42

Week 3

-1.0
score on a scale (Mean)
Standard Deviation: 3.14

Week 6

-1.4
score on a scale (Mean)
Standard Deviation: 3.57

Week 8

-2.0
score on a scale (Mean)
Standard Deviation: 3.61

Placebo

Last Observation

-1.4
score on a scale (Mean)
Standard Deviation: 3.01

Week 1

-0.1
score on a scale (Mean)
Standard Deviation: 2.02

Week 2

-0.4
score on a scale (Mean)
Standard Deviation: 2.69

Week 3

-0.5
score on a scale (Mean)
Standard Deviation: 2.91

Week 6

-1.2
score on a scale (Mean)
Standard Deviation: 3.20

Week 8

-1.6
score on a scale (Mean)
Standard Deviation: 3.07

Change From Baseline in Montgomery-Asberg Depression Scale (MADRS) Summary Statistics.

The MADRS (Montgomery and Asberg 1979) is a clinician-rated instrument that measures the presence and severity of depression. This instrument consists of 10 items. Each item is rated on a defined step scale of 0 to 6 with anchors at 2-point intervals. The MADRS total score is the sum of the 10 items and ranges from 0 to 60. A high numeric rating shows a greater degree of symptom severity.

Rufinamide

15.7
score on a scale (Mean)
Standard Deviation: 5.51

Placebo

16.4
score on a scale (Mean)
Standard Deviation: 4.86

Change From Baseline in Clinical Global Impression Scale for Severity of Illness: (CGI-S)

Severity of illness is the first scale in the CGI. A rating is filled in by the investigator at the start of treatment based on a 0-7 point weighted scale. It goes from not assessed (0), to among the most extremely ill patients (7).

Rufinamide

4.5
score on a scale (Mean)
Standard Deviation: 0.60

Placebo

4.4
score on a scale (Mean)
Standard Deviation: 0.56

Change From Baseline Raskin Depression Scale.

It explores the extent to which an individual demonstrates depression on three sub-scales (rated 1-5): verbal self-report, behavior and secondary symptoms of depression. Scores range from 3-15, with higher scores indicating greater severity.

Rufinamide

5.2
score on a scale (Mean)
Standard Deviation: 1.22

Placebo

5.3
score on a scale (Mean)
Standard Deviation: 1.20

Change From Baseline in Covi Anxiety Scale (CAS) - Index Total Score: Summary Statistics Observed

The Covi Anxiety Scale is a simple 3 item scale for the assessment of severity of anxiety symptoms. The scale measures 3 dimensions: verbal report, behavior and somatic symptoms of anxiety. Each item scored on a scale of 1 - 5. (1)not at all, (2)somewhat, (3)moderately, (4) considerably, and (5)very much), hence the scale is a 5- to 15 point range. The three items are the patient's verbal report (feeling shaky, jittery, jumpy), observed behavior consistent with anxiety during the interview (e.g. appearing frightened, shaky, restless) and somatic complains (e.g., sweating, trembling, heart pounding). COVI Rating Scale total score is the sum of items 1 - 3.

Rufinamide

Baseline

10.7
score on a scale (Mean)
Standard Deviation: 1.35

Last Observation

7.7
score on a scale (Mean)
Standard Deviation: 2.73

Screening

10.7
score on a scale (Mean)
Standard Deviation: 1.39

Week 3

8.3
score on a scale (Mean)
Standard Deviation: 2.51

Week 6

7.5
score on a scale (Mean)
Standard Deviation: 2.51

Week 8

7.1
score on a scale (Mean)
Standard Deviation: 2.50

Placebo

Baseline

10.6
score on a scale (Mean)
Standard Deviation: 1.33

Last Observation

7.7
score on a scale (Mean)
Standard Deviation: 2.29

Screening

10.5
score on a scale (Mean)
Standard Deviation: 1.26

Week 3

8.1
score on a scale (Mean)
Standard Deviation: 1.99

Week 6

7.6
score on a scale (Mean)
Standard Deviation: 2.21

Week 8

7.4
score on a scale (Mean)
Standard Deviation: 2.17

Total

229
Participants

Age, Continuous

37.0
years (Mean)
Standard Deviation: 12.07

Ethnicity (NIH/OMB)

Race (NIH/OMB)

Region of Enrollment

Sex: Female, Male

Overall Study

Rufinamide

Placebo