Placebo Controled Clinical Trial Using Topiramate To Treat Posttraumatic Stress Disorder (PTSD) Patients. (TOPIRAMATEPTSD)

The recruitment status of this study is unknown because the information has not been verified recently.
Verified January 2008 by Federal University of São Paulo.
Recruitment status was  Recruiting
Fundação de Amparo à Pesquisa do Estado de São Paulo
Information provided by:
Federal University of São Paulo Identifier:
First received: July 28, 2008
Last updated: January 27, 2009
Last verified: January 2008

July 28, 2008
January 27, 2009
January 2007
July 2009   (final data collection date for primary outcome measure)
Clinician Administered Posttraumatic Stress Disorder Scale [ Time Frame: 12 week ] [ Designated as safety issue: No ]
Same as current
Complete list of historical versions of study NCT00725920 on Archive Site
SF-36 [ Time Frame: 12 week ] [ Designated as safety issue: No ]
Same as current
Not Provided
Not Provided
Placebo Controled Clinical Trial Using Topiramate To Treat Posttraumatic Stress Disorder (PTSD) Patients.
Randomized Clinical Trial to Study the Topiramate Efficacy for Posttraumatic Disorder Treatment

The study is 12-week randomized placebo controlled trial compared to topiramate to treat patients with posttraumatic stress disorder, according to DSM-IV criteria.

Patients will receive topiramate or placebo, the dose will start with 25 mg/day and every week 25mg will be increment according to patients tolerance to side effects.

Patients will be evaluated by blind raters using CAPS, BDI, BAI, SF-36 and SAS. the outcomes will be improvement on PTSD, Depression, Anxiety, quality of life and social adjustment scale according to scales above.

Seventy-two (72) patients will be randomly allocated, in a stratified manner, according to sex and comorbidity with depression, into two (2) groups: topiramate and routine clinical follow-up, and a group that would receive placebo pills and routine clinical follow-up. The patients will be submitted to evaluations by trained independent researchers, who will apply a structured clinical interview for DSM-IV in order to evaluate the presence of psychiatric disorders (SCID I and SCID-II); the scale of evaluation of the Impact Event Scale-IES; the frequency and intensity of the symptoms of PTSD and of the variations associated with the trauma (PTSD Scale administered by clinical personnel: "Clinician-Administered PTSD Scale" - CAPS); severity of depression: Beck Depression Inventory (BDI) and that of anxiety: Beck Anxiety Inventory (BAI); a scale for the evaluation of social adaptation: Social Adjustment Scale (SAS); a scale for the evaluation of Quality of Life: SF-36; a scale for the evaluation of global functioning - axis V of DSM-IV (AGF). The patients will receive active treatment for twelve (12) weeks. After this period, the patients who have been using topiramate and who have had an improvement in their clinical condition will continue to receive further treatment for another twelve (12) weeks. Patients will have their medication suspended after twenty four (24) weeks and will be followed-up for a further twenty four (24) weeks. Patients from the placebo group who showed improvement will continue to receive clinical follow-up for a further thirty six (36) weeks. Patients from the placebo group who showed a worsening in their clinical status, evaluated through the CGI, will be excluded from the study and sent for traditional treatment at the PROVE (Violence and Stress Program) clinic. Patients who terminated the active phase of the study who did not obtain a clinical improvement will be sent for traditional treatment at the PROVE clinic. The principal outcomes to be examined will be: Response (a decrease of 50% in the CAPS score starting from the baseline) and remission (lack of diagnostic criteria for PTSD in the CAPS). After the end of the treatment, the collected data will be tabulated and compared using parametric and non-parametric tests. In this study the validation of the CAPS scale for Portuguese will be carried out.

Phase 4
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Posttraumatic Stress Disorder
  • Drug: topiramate
    patients will receive the active drug
  • Drug: placebo
    initial dose 25 mg day, increments of 25 mg each 2 weeks. Up to 100 mg/day Those with no intolerancy and no response dose could be up to 200 mg day
  • Experimental: 1
    patients receiving the active drug: topiramate
    Intervention: Drug: topiramate
  • Placebo Comparator: 2
    Intervention: Drug: placebo
Mello MF, Yeh MS, Barbosa Neto J, Braga LL, Fiks JP, Mendes DD, Moriyama TS, Valente NL, Costa MC, Mattos P, Bressan RA, Andreoli SB, Mari JJ. A randomized, double-blind, placebo-controlled trial to assess the efficacy of topiramate in the treatment of post-traumatic stress disorder. BMC Psychiatry. 2009 May 29;9:28.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
July 2009
July 2009   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Outpatient, male and female 18 to 60 yrs old
  • PTSD diagnostic according to DSM-IV criteria
  • Patients who agree to receive diagnostic after SCID I application by a trained psychiatrist
  • Sexually active female patients who agree to use contraceptive
  • Patients who agree to sign the IRB approved informed consent

Exclusion Criteria:

  • Patients who have schizophrenic disorder, delusional, psychotic depression, schizo-affective, bipolar and dependence to psychoactive substance disorders
  • Patients who have clinical disorders not compensated, which require clinical treatment as priority
  • Pregnancy
  • Previous renal calculosis history
  • Being under antidepressant, or other psychotropic medications
  • BMI under 20.
18 Years to 65 Years
Contact: Marcelo F Mello, MD 55 11 30786829
Contact: Mary S Yeh, MD 55 11 55494374
Marcelo Feijo de Mello, UNIFESP
Federal University of São Paulo
Fundação de Amparo à Pesquisa do Estado de São Paulo
Principal Investigator: Marcelo F Mello, MD Federal University of São Paulo
Federal University of São Paulo
January 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP