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J Dev Behav Pediatr. 2013 Sep;34(7):508-22. doi: 10.1097/DBP.0b013e31829d1f20.

Outcome measures for clinical trials in fragile X syndrome.

Author information

1
*Departments of Pediatrics, Neurological Sciences, and Biochemistry, Rush University Medical Center, Chicago, IL; †Department of Psychiatry and Behavioral Sciences, University of California, Davis School of Medicine, Sacramento, CA; ‡MIND Institute, University of California, Davis Medical Center, Sacramento, CA; §Center for Interdisciplinary Brain Sciences Research and Departments of Psychiatry and Behavioral Sciences, Radiology and Pediatrics, Stanford University School of Medicine, Stanford, CA; ¶National Institute of Mental Health, National Institutes of Health, Bethesda, MD; ‖Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD.

Abstract

OBJECTIVE:

Progress in basic neuroscience has led to identification of molecular targets for treatment in fragile X syndrome (FXS) and other neurodevelopmental disorders; however, there is a gap in translation to targeted therapies in humans. One major obstacle to the demonstration of efficacy in human trials has been the lack of generally accepted endpoints to assess improvement in function in individuals with FXS. To address this problem, the National Institutes of Health convened a meeting of leading scientists and clinicians with the goal of identifying and standardizing outcome measures for use as potential endpoints in clinical trials in FXS.

METHODS:

Participants in the meeting included FXS experts, experts in the design and implementation of clinical trials and measure development, and representatives from advocacy groups, industry, and federal agencies.

RESULTS:

The group generated recommendations for optimal outcome measures in cognitive, behavioral, and biomarker/medical domains, including additional testing and validation of existing measures and development of new measures in areas of need. Although no one endpoint or set of endpoints could be identified that met all criteria as an optimal measure, recommendations are presented in this report.

CONCLUSION:

The report is expected to guide the selection of measures in clinical trials and lead to the use of a more consistent battery of measures across trials. Furthermore, this will help to direct research toward gaps in the development of validated FXS-specific outcome measures and to assist with interpretation of clinical trial data by creating templates for measurement of treatment efficacy.

PMID:
24042082
PMCID:
PMC3784007
DOI:
10.1097/DBP.0b013e31829d1f20
[Indexed for MEDLINE]
Free PMC Article
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