An Open Label Extension Study of STX209 in Subjects With Fragile X Syndrome

NCT ID: NCT01013480

Last Updated: 2012-12-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

45 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-11-30

Study Completion Date

2012-12-31

Brief Summary

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Study 22001, "A Double-Blind, Placebo-Controlled, Flexible-Dose Evaluation of the Efficacy, Safety, and Tolerability of STX209 in the Treatment of Irritability in Subjects with Fragile X Syndrome" currently is evaluating the efficacy of STX209 (R-baclofen) for management of typical problem behaviors, such as irritability and aggression, in subjects with FXS. This study (22002) will enter subjects who complete Study 22001 into a long-term, open-label study.The open-label extension protocol will provide necessary data on the long-term safety and tolerability of STX209 among subjects with FXS who receive treatment under conditions more closely reflective of their general medical care.

Detailed Description

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Conditions

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Fragile X Syndrome

Keywords

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Fragile X Syndrome

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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STX209

Group Type ACTIVE_COMPARATOR

Arbaclofen

Intervention Type DRUG

A flexible dose titration will be utilized during the first four weeks to define the optimal titrated dose (OTD) for each subject. Investigators will use clinical judgment to adjust doses to the OTD. The starting dose will be 1 mg BID. The dose may be increased every four to five days to 2 mg BID, 3 mg BID, 5 mg BID and then 10 mg BID

Interventions

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Arbaclofen

A flexible dose titration will be utilized during the first four weeks to define the optimal titrated dose (OTD) for each subject. Investigators will use clinical judgment to adjust doses to the OTD. The starting dose will be 1 mg BID. The dose may be increased every four to five days to 2 mg BID, 3 mg BID, 5 mg BID and then 10 mg BID

Intervention Type DRUG

Other Intervention Names

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R-baclofen STX209

Eligibility Criteria

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Inclusion Criteria

* Have completed all scheduled visits in protocol 22001 and have shown they can adequately follow the protocol, with sufficient medical justification to continue on open-label treatment with STX209, as assessed by the principal investigator

Exclusion Criteria

* Subjects with a medical condition that might interfere with the conduct of the study, confound interpretation of the study results, or endanger their own well-being.
* The occurrence or continuation of any adverse event or condition during study 22001 that, in the opinion of the Investigator, should exclude the subject from participating in this open-label extension.
Minimum Eligible Age

6 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Seaside Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of California-Los Angeles Neuropsychiatric Institute

Los Angeles, California, United States

Site Status

M.I.N.D. Institute

Sacramento, California, United States

Site Status

Rush University Medical Center

Chicago, Illinois, United States

Site Status

NYS Institute for Basic Research in Developmental Disabilities

Staten Island, New York, United States

Site Status

University of North Carolina Neurosciences Hospital

Chapel Hill, North Carolina, United States

Site Status

Suburban Research Associates

Media, Pennsylvania, United States

Site Status

Vanderbilt Kennedy Center

Nashville, Tennessee, United States

Site Status

Red Oaks Psychiatry Associates, PA

Houston, Texas, United States

Site Status

Seattle Children's Hospital

Seattle, Washington, United States

Site Status

Countries

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United States

Other Identifiers

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22002

Identifier Type: -

Identifier Source: org_study_id