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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01568216
Registration number
NCT01568216
Ethics application status
Date submitted
27/02/2012
Date registered
2/04/2012
Date last updated
30/07/2015
Titles & IDs
Public title
20101299: Study to Evaluate the Effect of AMG 747 on Schizophrenia Negative Symptoms
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Scientific title
"A Phase 2, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Effect of Add-on AMG 747 on Schizophrenia Negative Symptoms"
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Secondary ID [1]
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2011-004844-23
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Secondary ID [2]
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20101299
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Schizophrenia
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Condition category
Condition code
Mental Health
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Schizophrenia
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Drugs - AMG 747
Treatment: Drugs - Placebo
Experimental: AMG 747 - Dose 1 -
Experimental: AMG 747 - Dose 2 -
Experimental: AMG 747 - Dose 3 -
Placebo comparator: Placebo Comparator -
Treatment: Drugs: AMG 747
Three dose levels once-daily oral administration
Treatment: Drugs: Placebo
Once-daily oral administration
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Intervention code [1]
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Treatment: Drugs
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Change from baseline to week 12 in negative symptoms, as measured by the NSA-16 total score
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Assessment method [1]
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NSA-16 = 16-item Negative Symptom Assessment Scale, an efficacy scale used for the primary endpoint
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Timepoint [1]
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12 Weeks
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Secondary outcome [1]
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Response defined as a = 20% decrease in the NSA-16 total score at week 12
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Assessment method [1]
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NSA-16 = 16-item Negative Symptom Assessment Scale
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Timepoint [1]
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12 weeks
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Secondary outcome [2]
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Change from baseline to week 12 on the PANSS total score and Marder factor scores
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Assessment method [2]
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Positive and Negative Syndrome Scale (PANSS)
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Timepoint [2]
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12 weeks
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Secondary outcome [3]
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Change from baseline to week 12 on the CGI-S
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Assessment method [3]
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Clinical Global Impression Severity Scale (CGI-S)
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Timepoint [3]
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Week 12
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Secondary outcome [4]
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CGI-I scores at week 12
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Assessment method [4]
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Clinical Global Impression Improvement (CGI-I)
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Timepoint [4]
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12 weeks
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Secondary outcome [5]
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Change on cognition battery
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Assessment method [5]
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Timepoint [5]
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12 weeks
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Secondary outcome [6]
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Change in personal and social functioning
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Assessment method [6]
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Timepoint [6]
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12 weeks
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Secondary outcome [7]
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Change on patient reported outcomes
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Assessment method [7]
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Timepoint [7]
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12 weeks
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Eligibility
Key inclusion criteria
* Diagnosis of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) schizophrenia
* Total score on the PANSS Marder Negative Symptom Factor Scale (NSFS) =20
* Total score on the PANSS Marder Positive Symptom Factor Scale (PSFS) = 30
* Receiving stable antipsychotic therapy for at least 8 weeks prior to screening
* Receiving a stable dose of other psychotropic agents for at least 8 weeks prior to screening
* Subject has had a stable residence or living arrangement for at least 8 weeks prior to screening and the residence or living arrangement is not anticipated to change for the duration of the study
* The subject or subject's legally acceptable representative has provided informed consent.
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Minimum age
18
Years
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Maximum age
60
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Current schizoaffective or bipolar disorder, panic disorder, obsessive compulsive disorder, evidence of mental retardation by history or clinical examination or known premorbid IQ = 70
* Clinically significant suicidal ideation or suicide attempts, assaultive behavior or marked changes in mood within the 8 weeks prior to screening, or currently endorsing suicidal ideation in clinical exam
* Substance abuse (with the exception of nicotine or caffeine abuse) within the 8 weeks prior to screening, or during screening
* Substance dependence (with the exception of nicotine or caffeine dependence) within the 6 months prior to screening, or during screening
* Planning to initiate a smoking cessation therapy or otherwise substantially modify nicotine use during the study
* Positive urine drug test for substances of abuse (with the exception of positive screens for prescribed agents such as benzodiazepines).
* Other criteria may apply
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 2
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Stopped early
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/05/2012
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/06/2013
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Sample size
Target
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Accrual to date
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Final
121
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Recruitment in Australia
Recruitment state(s)
SA,VIC,WA
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Recruitment hospital [1]
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Research Site - Glenside
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Recruitment hospital [2]
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Research Site - Melbourne
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Recruitment hospital [3]
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Research Site - Mt Claremont
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Recruitment postcode(s) [1]
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5065 - Glenside
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Recruitment postcode(s) [2]
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3004 - Melbourne
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Recruitment postcode(s) [3]
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6010 - Mt Claremont
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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California
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United States of America
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State/province [2]
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District of Columbia
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United States of America
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Florida
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United States of America
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Georgia
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United States of America
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Illinois
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New Jersey
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United States of America
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New York
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United States of America
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North Carolina
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United States of America
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Ohio
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United States of America
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Texas
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Canada
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Alberta
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Canada
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British Columbia
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Canada
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Ontario
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Canada
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Quebec
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New Zealand
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State/province [15]
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Takapuna, Auckland
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Russian Federation
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Khotkovo
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Russian Federation
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Moscow
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Russian Federation
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Saint- Petersburg
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Russian Federation
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Saratov
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Singapore
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Singapore
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Spain
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Cantabria
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Spain
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Cataluña
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Spain
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State/province [23]
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Comunidad Valenciana
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Country [24]
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Spain
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State/province [24]
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Madrid
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Amgen
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this study is to evaluate the effect of AMG 747 on negative symptoms of schizophrenia in patients who are stable on current antipsychotic treatment. After a run-in period on their current antipsychotic treatment, patients will be randomized to one of the four treatment arms as add-on therapy for a treatment duration of up to 3 months.
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Trial website
https://clinicaltrials.gov/study/NCT01568216
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Trial related presentations / publications
Georgiades A, Davis VG, Atkins AS, Khan A, Walker TW, Loebel A, Haig G, Hilt DC, Dunayevich E, Umbricht D, Sand M, Keefe RSE. Psychometric characteristics of the MATRICS Consensus Cognitive Battery in a large pooled cohort of stable schizophrenia patients. Schizophr Res. 2017 Dec;190:172-179. doi: 10.1016/j.schres.2017.03.040. Epub 2017 Apr 20. Dunayevich E, Buchanan RW, Chen CY, Yang J, Nilsen J, Dietrich JM, Sun H, Marder S. Efficacy and safety of the glycine transporter type-1 inhibitor AMG 747 for the treatment of negative symptoms associated with schizophrenia. Schizophr Res. 2017 Apr;182:90-97. doi: 10.1016/j.schres.2016.10.027. Epub 2016 Oct 24.
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Public notes
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Contacts
Principal investigator
Name
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MD
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Address
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Amgen
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Phone
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Fax
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Email
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Contact person for public queries
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT01568216
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