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Minocycline as an Adjunctive Therapy for Schizophrenia: a Randomized Controlled Study

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified January 2012 by Shalvata Mental Health Center.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Shalvata Mental Health Center Identifier:
First received: May 26, 2010
Last updated: January 4, 2012
Last verified: January 2012
Double - Blind, Randomized, single centered study. The purpose of this study is to assess the feasibility of minocycline vs. placebo, added to atypical antipsychotic medications, for positive symptoms in adults suffering from schizophrenia.

Condition Intervention Phase
Schizophrenia Drug: Minocycline Drug: placebo Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by Shalvata Mental Health Center:

Primary Outcome Measures:
  • Positive symptoms [ Time Frame: from baseline to the end of the study (day 56) ]
    Positive symptoms: The change in Scale for the Positive and Negative Syndrome Scale (PANSS) score from baseline to the end of the study and the change in Clinical Global Impression Scale (CGI).

Estimated Enrollment: 50
Study Start Date: June 2010
Estimated Study Completion Date: January 2013
Estimated Primary Completion Date: January 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Minocycline Drug: Minocycline
minocycline 200 mg/day orally in two divided doses for the second week. From weeks 3 to weeks 5, minocycline 400 mg/day orally in two divided doses.
Placebo Comparator: Placebo Drug: placebo

placebo 200 mg/day orally in two divided doses for the first week. placebo 200 mg/day orally in two divided doses for the second week.

From weeks 3 to weeks 5, placebo 400 mg/day orally in two divided doses.


Ages Eligible for Study:   20 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Men and women 20-65 years of age.
  • Primary DSM-IV diagnosis of Schizophrenia based on SCID for schizophrenia and confirmed by two senior psychiatrists.
  • Patients who scored "moderate" (4) or higher on at least three of seven positive items in PANSS
  • Initiated on treatment with atypical anti-psychotic medication.
  • Capable and willing to provide informed consent
  • Able to adhere to the treatment schedule
  • Able to read, hear, write and speak the local language.
  • Has signed a written informed consent to participate in the study

Exclusion Criteria:

  • Patients with acute, unstable, significant, or untreated medical illness besides schizophrenia including alcohol and drug dependence, or depression.
  • Current suicidal ideation or history of a suicide attempt in the past 3 years
  • Known or suspected pregnancy or women of childbearing potential and not using a medically accepted form of contraception when engaging in sexual intercourse. or women who are breastfeeding
  • Subjects who were taking a known contraindication to minocycline treatment.
  • Subjects who had received treatment with minocycline or β-lactam antibiotics in the preceding half year before study entry.
  • Subjects who were under compulsory hospitalization.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01133080

Contact: yechiel levkovitz, MD, PhD 972-9-7478644

Shalvata Mental Health Center Recruiting
Hod Hasharon, Israel
Contact: Hilik Levkovitz, prof.    972-9-7478644   
shalvata MHC Not yet recruiting
Hod HAsharon, Israel
Contact: yechiel levkovitz    972-9-7478644      
Principal Investigator: yechiel levkovitz, MD, PhD         
Sponsors and Collaborators
Shalvata Mental Health Center
Principal Investigator: Yechiel Levkovitz, MD, PhD Shalvata MHC
  More Information

Responsible Party: Shalvata Mental Health Center Identifier: NCT01133080     History of Changes
Other Study ID Numbers: SHA-0008-10
Study First Received: May 26, 2010
Last Updated: January 4, 2012

Additional relevant MeSH terms:
Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders
Anti-Bacterial Agents
Anti-Infective Agents processed this record on August 18, 2017