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    The EU Clinical Trials Register currently displays   43861   clinical trials with a EudraCT protocol, of which   7284   are clinical trials conducted with subjects less than 18 years old.   The register also displays information on   18700   older paediatric trials (in scope of Article 45 of the Paediatric Regulation (EC) No 1901/2006).

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    Summary
    EudraCT Number:2004-004837-33
    Sponsor's Protocol Code Number:A9451046
    National Competent Authority:UK - MHRA
    Clinical Trial Type:EEA CTA
    Trial Status:Completed
    Date on which this record was first entered in the EudraCT database:2005-03-09
    Trial results View results
    Index
    A. PROTOCOL INFORMATION
    B. SPONSOR INFORMATION
    C. APPLICANT IDENTIFICATION
    D. IMP IDENTIFICATION
    D.8 INFORMATION ON PLACEBO
    E. GENERAL INFORMATION ON THE TRIAL
    F. POPULATION OF TRIAL SUBJECTS
    G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
    N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
    P. END OF TRIAL
    Expand All   Collapse All
    A. Protocol Information
    A.1Member State ConcernedUK - MHRA
    A.2EudraCT number2004-004837-33
    A.3Full title of the trial
    A randomised, double-blind, parallel group trial to assess the variability and treatment effect size for a Neuropathic Pain offset design
    A.4.1Sponsor's protocol code numberA9451046
    A.7Trial is part of a Paediatric Investigation Plan Information not present in EudraCT
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorPfizer Ltd
    B.1.3.4CountryUnited Kingdom
    B.3.1 and B.3.2Status of the sponsor
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing support
    B.4.2Country
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisation
    B.5.2Functional name of contact point
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation Information not present in EudraCT
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product namegabapentin
    D.3.4Pharmaceutical form Capsule*
    D.3.4.1Specific paediatric formulation Information not present in EudraCT
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNgabapentin
    D.3.9.1CAS number 60142-96-3
    D.3.9.3Other descriptive name1-(aminomethyl)cyclohexaneacetic acid
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number300
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) Information not present in EudraCT
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product Information not present in EudraCT
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) Information not present in EudraCT
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product Information not present in EudraCT
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy Information not present in EudraCT
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product Information not present in EudraCT
    D.3.11.8Extractive medicinal product Information not present in EudraCT
    D.3.11.9Recombinant medicinal product Information not present in EudraCT
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    D.8 Placebo: 1
    D.8.1Is a Placebo used in this Trial?Yes
    D.8.3Pharmaceutical form of the placeboCapsule*
    D.8.4Route of administration of the placeboOral use
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 7.1
    E.1.2Level LLT
    E.1.2Classification code 10054095
    E.1.3Condition being studied is a rare disease No
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    To estimate the difference in average daily pain score (ADPS) after 4 weeks in patients maintained on the ‘standard’ dose of gabapentin compared to those on a reduced dose of gabapentin.
    To estimate the variability of ADPS at 4 weeks for both groups.
    To investigate the time to onset of maximum pain following gabapentin dose-reduction.
    E.2.2Secondary objectives of the trial
    To assess the response of the Neuropathic Pain Symptom Inventory to changes in drug treatment.
    E.2.3Trial contains a sub-study Information not present in EudraCT
    E.3Principal inclusion criteria
    - Male or female, aged 18 and over
    - Female patients must be non-pregnant and non-lactating, and be postmenopausal, surgically sterilized, or using an appropriate method of contraception (hormonal or intrauterine device), throughout and four weeks after completion of the study.
    - Patients with neuropathic pain, defined as pain initiated or caused by a primary lesion or dysfunction in the nervous system (IASP 1994 definition). If pain is of mixed origin then it must have a predominantly neuropathic component as defined by a total score of ³ 4 on the DN4 questionnaire (Bouhassira et al., 2004b).
    - Patients who are known to respond to gabapentin at a daily dose of 1200, 1500, or 1800 mg, which has not been adjusted within 4 weeks of screening. A responder is defined by the following:
    . a documented reduction of global pain of ³ 50% following the start of gabapentin treatment. If documentary evidence is not available then a Patient’s Global Impression of Change (PGIC) of “much improved” or “very much improved” following the start of gabapentin treatment is acceptable provided the patient has been on gabapentin for £ 6 months, and
    a global pain score £ 4 on an 11-point scale at screening.
    E.4Principal exclusion criteria
    - Patients with trigeminal neuralgia- Patients with pain of mixed origin (eg, chronic lower back pain, head pain, visceral pain, etc) unless there is a documented predominant neuropathic component responsive to gabapentin.
    - Patients with any co-existing pain which he/she cannot differentiate from the neuropathic pain.
    - Patients with any evidence of clinically significant renal impairment.
    - Patients with any clinically significant abnormality following review of pre-study laboratory data and full physical examination.
    - History of chronic hepatitis B or C, acute hepatitis A, B, or C within the past 3 months, or HIV infection.
    - Participation in a clinical trial for an investigational drug and/or agent within 30 days prior to screening.
    - Patients who have a history of alcohol or illicit drug abuse in the past 2 years.
    - Use of prohibited medications as defined, unless the appropriate washout period has been observed.
    - Clinically significant or unstable medical or psychological conditions that, in the opinion of the investigator, would compromise participation in the study.
    E.5 End points
    E.5.1Primary end point(s)
    Average daily pain score
    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis Information not present in EudraCT
    E.6.2Prophylaxis Information not present in EudraCT
    E.6.3Therapy Information not present in EudraCT
    E.6.4Safety Information not present in EudraCT
    E.6.5Efficacy Information not present in EudraCT
    E.6.6Pharmacokinetic Information not present in EudraCT
    E.6.7Pharmacodynamic Yes
    E.6.8Bioequivalence Information not present in EudraCT
    E.6.9Dose response Information not present in EudraCT
    E.6.10Pharmacogenetic Information not present in EudraCT
    E.6.11Pharmacogenomic Information not present in EudraCT
    E.6.12Pharmacoeconomic Information not present in EudraCT
    E.6.13Others Yes
    E.6.13.1Other scope of the trial description
    methodolgy
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) No
    E.7.1.1First administration to humans Information not present in EudraCT
    E.7.1.2Bioequivalence study Information not present in EudraCT
    E.7.1.3Other Information not present in EudraCT
    E.7.1.3.1Other trial type description
    E.7.2Therapeutic exploratory (Phase II) No
    E.7.3Therapeutic confirmatory (Phase III) No
    E.7.4Therapeutic use (Phase IV) Yes
    E.8 Design of the trial
    E.8.1Controlled Yes
    E.8.1.1Randomised Yes
    E.8.1.2Open No
    E.8.1.3Single blind No
    E.8.1.4Double blind Yes
    E.8.1.5Parallel group Yes
    E.8.1.6Cross over No
    E.8.1.7Other Information not present in EudraCT
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) No
    E.8.2.2Placebo Yes
    E.8.2.3Other No
    E.8.3 The trial involves single site in the Member State concerned No
    E.8.4 The trial involves multiple sites in the Member State concerned Yes
    E.8.5The trial involves multiple Member States Yes
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA No
    E.8.6.2Trial being conducted completely outside of the EEA Information not present in EudraCT
    E.8.7Trial has a data monitoring committee Information not present in EudraCT
    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.8.9.1In the Member State concerned years0
    E.8.9.1In the Member State concerned months10
    E.8.9.1In the Member State concerned days
    E.8.9.2In all countries concerned by the trial years0
    E.8.9.2In all countries concerned by the trial months10
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 No
    F.1.1.1In Utero Information not present in EudraCT
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) Information not present in EudraCT
    F.1.1.3Newborns (0-27 days) Information not present in EudraCT
    F.1.1.4Infants and toddlers (28 days-23 months) Information not present in EudraCT
    F.1.1.5Children (2-11years) Information not present in EudraCT
    F.1.1.6Adolescents (12-17 years) Information not present in EudraCT
    F.1.2Adults (18-64 years) Yes
    F.1.3Elderly (>=65 years) Yes
    F.2 Gender
    F.2.1Female Yes
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Information not present in EudraCT
    F.3.3.1Women of childbearing potential not using contraception For clinical trials recorded in the database before the 10th March 2011 this question read: "Women of childbearing potential" and did not include the words "not using contraception". An answer of yes could have included women of child bearing potential whether or not they would be using contraception. The answer should therefore be understood in that context. This trial was recorded in the database on 2005-03-09. Yes
    F.3.3.2Women of child-bearing potential using contraception Information not present in EudraCT
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally No
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state20
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 40
    F.4.2.2In the whole clinical trial 40
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2005-04-11
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2005-02-03
    P. End of Trial
    P.End of Trial StatusCompleted
    P.Date of the global end of the trial2005-10-05
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