E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Generalized Anxiety Disorder |
|
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 9.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10018105 |
E.1.2 | Term | Generalized anxiety disorder |
|
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Primary Objectives:
• To assess the long-term safety and tolerability of 350 to 600 mg/day of PD-0332334 dosed BID in subjects with GAD.
|
|
E.2.2 | Secondary objectives of the trial |
Secondary Objectives:
• To assess the relationship between severity of GAD and health care utilization over a one year time period. |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
Subjects must meet all of the following inclusion criteria to be eligible for enrollment into the study:
1. Subjects must have completed all phases of one of the four preceding double-blind GAD studies (A5361017, A5361018, A5361019, or A5361020);
2. Female subjects must continue to use adequate birth control methods and have a negative serum pregnancy test at least 14 days (±3 day window) prior to and a negative urine pregnancy test before starting open label PD 0332334 at Visit 1 (Day 1);
3. Subjects must be willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures;
4. There must be evidence of a personally signed and dated informed consent document indicating that the subject has been informed of all pertinent aspects of the study. |
|
E.4 | Principal exclusion criteria |
Subjects presenting with any of the following will not be included in the study: 1. Subjects who experienced a serious adverse event during the preceding double-blind efficacy study that was judged to be related to study medication by the investigator or the sponsor’s medical monitor; 2. Subjects who have an ongoing, unresolved, clinically significant medical problem that, in the judgment of the investigator or the sponsor’s medical monitor, would make it unsafe for the subject to participate in the study; 3. Serious suicidal risk per the clinical investigator’s judgment; 4. Current use of psychotropic medications primarily indicated for the treatment of GAD that cannot be discontinued after informed consent is obtained and at least 5 half-lives of the specific psychotropic medication used prior to Visit 1 (Day 1) in protocol A5361022; 5. Current use of benzodiazepines, gabapentin (Neurontin®), pregabalin (Lyrica®), or CNS drug or supplements with known or suspected sedating effects (eg, amitriptyline, antihistamines, carbamazepine, mirtazapine, trazodone, valproic acid) that cannot be discontinued after informed consent is obtained and at least 5 half-lives of the specific psychotropic medication used prior to Visit 1 (Day 1) in protocol A5361022. If there are questions regarding a potentially sedating CNS drug or supplement that is not listed, the site should contact the sponsor’s medical monitor to discuss. 6. Subjects with a positive urine drug test at the screen visit for any of the following substances or classes of compounds: amphetamines, barbiturates, opiates, benzodiazepines, sedatives and hypnotics, cocaine, phencyclidine (PCP), cannabinoids, or other illegal or illicit drugs. An exception to the exclusion for a positive benzodiazepine, opiate, or sedative and hypnotic drug test at the screen visit or Visit 1 (Day 1) may be granted by the medical monitor if written evidence of a valid, current prescription is presented; 7. Subjects with a screening 12-lead ECG demonstrating QTcF (Fredericia’s correction) >450 msec, if confirmed with an unscheduled repeat 12-lead ECG at the screen visit. In the event of discrepant QTcF values (ie, >450 msec and <450 msec) after repeat unscheduled 12-lead ECG at screen, a decision with regards to protocol eligibility will be made on a case by case basis between the investigator and the medical monitor; 8. Pregnant or nursing females; females of childbearing potential who are unwilling or unable to use an acceptable method of contraception for the duration of the study; 9. Treatment with an investigational drug (other than a trial including PD 0332334) within 60 days preceding the first dose of trial medication; 10. Other severe acute or chronic medical or psychiatric conditions or laboratory abnormalities that may increase the risk associated with trial participation or investigational product administration or may interfere with the interpretation of trial results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study. |
|
E.5 End points |
E.5.1 | Primary end point(s) |
2.2.1. Safety Endpoints This safety study has multiple safety endpoints. Safety endpoints will include: The nature, incidence, duration, and severity of adverse events; discontinuation due to adverse events; adverse events occurring during and after trial medication discontinuation; body weight, clinical safety laboratory, 12-lead ECGs, physical exams, and vital signs will be monitored in this study. During adverse event monitoring, it is expected that investigators will be alert to adverse events that are suicide related adverse events. If a suicide related adverse events is identified, the investigator should consult the sponsor immediately regarding the continuation of the subject in the trial and a suicide risk assessment should be performed to determine appropriate clinical follow up. This assessment should be performed by a clinician (eg, MD, social worker, nurse) with experience in suicide risk assessment. If a suicide related adverse events is identified the investigational staff are asked to complete the Columbia Suicide Severity Rating Scale as an unplanned CRF page. This information will then be used to generate a narrative of the suicide related adverse event. In addition Pfizer will periodically perform a search of the safety database to identify any further suicidal related adverse events.
2.2.2. Other Endpoints • Health care utilization will be assessed with the Health Care Utilization Questionnaire (HCU). • GAD symptom severity will be measured by the HAM-A, the CGI-S, and the Daily Diary. • At a select number of sites 2 PK samples will be collected at Visit 4 (Week 4). The first sample will be collected immediately upon arrival at the clinic and the second sample will be collected just prior to leaving the clinic. |
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | Information not present in EudraCT |
E.6.2 | Prophylaxis | Information not present in EudraCT |
E.6.3 | Therapy | Information not present in EudraCT |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Information not present in EudraCT |
E.6.6 | Pharmacokinetic | Information not present in EudraCT |
E.6.7 | Pharmacodynamic | Information not present in EudraCT |
E.6.8 | Bioequivalence | Information not present in EudraCT |
E.6.9 | Dose response | Information not present in EudraCT |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | Information not present in EudraCT |
E.6.12 | Pharmacoeconomic | Information not present in EudraCT |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
|
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | Information not present in EudraCT |
E.7.1.2 | Bioequivalence study | Information not present in EudraCT |
E.7.1.3 | Other | Information not present in EudraCT |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | Information not present in EudraCT |
E.8.1.2 | Open | Information not present in EudraCT |
E.8.1.3 | Single blind | Information not present in EudraCT |
E.8.1.4 | Double blind | Information not present in EudraCT |
E.8.1.5 | Parallel group | Information not present in EudraCT |
E.8.1.6 | Cross over | Information not present in EudraCT |
E.8.1.7 | Other | Information not present in EudraCT |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Information not present in EudraCT |
E.8.2.2 | Placebo | Information not present in EudraCT |
E.8.2.3 | Other | Information not present in EudraCT |
E.8.3 |
The trial involves single site in the Member State concerned
| Information not present in EudraCT |
E.8.4 | The trial involves multiple sites in the Member State concerned | Information not present in EudraCT |
E.8.4.1 | Number of sites anticipated in Member State concerned | 8 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 50 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
|
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
| |
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 3 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 22 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 1 |
E.8.9.2 | In all countries concerned by the trial days | 22 |