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A Study With RO4917523 in Patients With Fragile X Syndrome

This study has been completed.
Information provided by (Responsible Party):
Hoffmann-La Roche Identifier:
First received: November 17, 2009
Last updated: February 5, 2015
Last verified: February 2015

November 17, 2009
February 5, 2015
November 2009
January 2011   (final data collection date for primary outcome measure)
Safety, Tolerability and Pharmacokinetics: AEs, laboratory parameters [ Time Frame: AEs throughout study; laboratory assessments: days 1, 8, 15, 29, 43 ] [ Designated as safety issue: No ]
Same as current
Complete list of historical versions of study NCT01015430 on Archive Site
Efficacy: Behavior and cognition assessments [ Time Frame: Every 2 weeks throughout study ] [ Designated as safety issue: No ]
Same as current
Not Provided
Not Provided
A Study With RO4917523 in Patients With Fragile X Syndrome
A Randomized, Double-blind, Placebo-controlled, Pharmacokinetic, Safety and Tolerability, and Exploratory Efficacy and Pharmacodynamic Effects Study of RO4917523 in Adult Patients With Fragile X Syndrome.

This randomized, double-blind multiple ascending dose study will evaluate the safety and tolerability, pharmacokinetics and efficacy of RO4917523 in patients with Fragile X Syndrome. The patients will be randomized to receive either active drug or placebo. The anticipated time on study treatment is 6 weeks. The target sample size is <100 patients.

Not Provided
Phase 2
Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Fragile X Syndrome
  • Drug: Placebo
    Placebo daily po
  • Drug: RO4917523
    RO4917523 ascending doses daily po
  • Drug: RO4917523
    RO4917523 fixed dose daily po
  • Experimental: 1
    Intervention: Drug: RO4917523
  • Placebo Comparator: 2
    Intervention: Drug: Placebo
  • Experimental: 3
    Intervention: Drug: RO4917523
  • Placebo Comparator: 4
    Intervention: Drug: Placebo
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
January 2011
January 2011   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Adult patients, 18 to 50 years of age
  • Fragile X Syndrome
  • IQ less than 75
  • Reliable caregiver

Exclusion Criteria:

  • Current psychosis or presumption of psychosis
  • History of suicidal behavior or considered a high suicidal risk
  • Severe self-injurious behavior
  • Any unstable medical condition other than Fragile X Syndrome (e.g. hypertension, diabetes)
  • Current seizure disorder
18 Years to 50 Years
Contact information is only displayed when the study is recruiting subjects
United States
Not Provided
Hoffmann-La Roche
Hoffmann-La Roche
Not Provided
Study Director: Clinical Trials Hoffmann-La Roche
Hoffmann-La Roche
February 2015

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