Generalized Anxiety Disorder MedDRA version: 8.1 Level: LLT Classification code 10018105
Conditions
Interventions
Product Name: Pregabalin
Product Code: PD 0144723 (CI-1008)
Pharmaceutical Form: Capsule*
INN or Proposed INN: Pregabalin
CAS Number: 148553-50-8
Other descriptive name: Lyrica, (S)-
Sponsors
Pfizer España
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Written informed consent must be obtained from all subjects prior to study entry. At the screening visit the investigator will be responsible for obtaining witnessed (if applicable), written informed consent and documenting this in the source documents. A copy of the signed and dated informed consent form should be provided to the subject. 2. Age range: 18-65 years 3. Both men and women are eligible for the study. (Women of childbearing potential or 2 times the upper limit or normal are considered significant) Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range
Exclusion criteria
Exclusion criteria: 1. Pregnant or lactating women 2. Hamilton Depression Rating Scale (HAM-D) - 17 Item total score =15 3. History of non-response to alprazolam, other benzodiazepines, gabapentine or pregabalin given for the treatment of anxiety as indicated by a [screening or baseline] HAM-A score > 18 4. A current DSM-IV-TMTM (2000) diagnosis of major depressive disorder, dysthymia, social phobia, post-traumatic stress disorder, body dysmorphic disorder or eating disorder at screening or with the past 6 months. 5. A current or past DSM-IV diagnosis of schizophrenia, psychotic disorder, bipolar affective disorder or obsessive-compulsive disorder. 6. Meet DSM-IV criteria for any substance dependence in the past 5 years or abuse in past 12 months excluding nicotine dependence. 7. Receiving psychotherapy (e.g. cognitive therapy, cognitive-behavioral therapy, supportive therapy or others) in which the specific focus of the therapy is generalized anxiety disorder (GAD) and its symptoms or another anxiety disorder. Subjects who are contemplating beginning a course of psychotherapy and/or behavioral therapy during the course of the study. 8. A history of seizure disorder, except febrile seizures of childhood. 9. A history of neuropathic pain 10. A history of narrow angle glaucoma 11. Use of fluoxetine within 5 weeks prior to the screening visit. 12. Use of psychotropic (including antiepileptic) medication other than benzodiazepines within 2 weeks prior to the screening visit. 13. Positive urine drug screen at the screening visit for the following substances or classes of drugs: amphetamines, barbiturates, ethanol, narcotics, non-benzodiazepine sedatives and hypnotics, cocaine, phencyclidine (PCP), cannabinoids, or other illegal or illicit drugs. 14. Mental condition, including mental retardation, rendering the individual unable to understand the nature, scope, and possible consequences of the study and/or evidence of any uncooperative attitude. 15. Considered by the Investigator to be at risk for suicide or aggressive behavior. 16. Any serious or uncontrolled medical illness, in the opinion of the investigator, will render the subject unsuitable for the study. 17. Any significant, serious, unstable hematological, autoimmune, endocrine, cardiovascular, renal, hepatic, gastrointestinal, or neurological disorder that in the opinion of the Investigator will render the subject unsuitable for the study. 18. Creatinine clearance =60 ml/min (estimated from serum creatinine, body weight, age and sex using the Cockroft-Gault equation. Subjects who have an estimated creatinine clearance of less than 60 ml/min by this screening method may, at the investigator's discretion, have their creatinine clearance measured with a 24-hour urine collection, performed at the central laboratory. If this 24-hour urine creatinine clearance is greater than 60 ml/min, the subject may be eligible for the study. 19. Received or have received electroconvulsive therapy within six (6) months prior to study entry. 20. In the judgment of the investigator, the subject is unable to follow the protocol, or otherwise might not be suitable for the study. 21. Known sensitivity to pregabalin, other drugs structurally related to the neurotransmitter GABA, alprazolam or other benzodiazepines. 22. Participation in any other studies involving investigational or marketed products, concomitantly or within 3 months prior to study entry.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: To evaluate the efficacy of pregabalin in maintaining the benzodiazepine -free state in subjects with prior stable alprazolam use. ;Secondary Objective: To obtain additional data on the efficacy of pregabalin in reducing the severity of symptoms of GAD, rebound anxiety, benzodiazepine withdrawal, and titration regimen in comparison to placebo after switching from a stable therapeutic dose of alprazolam to treatment with pregabalin or placebo. ;Primary end point(s): The primary endpoint of this study is the proportion of subjects who are free of benzodiazepine and other psychoactive drugs during the six weeks of the Alprazolam-Free Phase of Double-Blind Treatment. Being free of benzodiazepine and/or other psychoactive drugs is defined as: Negative urine benzodiazepine/psychoactive toxicology assay (done at each visit of the Alprazolam-Free Phase of Double-Blind Treatment) and negative serum benzodiazepine/alcohol assay (done at endpoint). | — |
Countries
Czech Republic, Italy, Spain
Outcome results
None listed