Creatine Safety & Tolerability in Huntington's Disease (CREST-X)

This study has been completed.
Information provided by (Responsible Party):
Steven M. Hersch, Massachusetts General Hospital Identifier:
First received: August 5, 2011
Last updated: July 9, 2013
Last verified: July 2013
The purpose of this study is to extend findings from the creatine dose-finding study (CREST-UP1) in Huntington's disease to evaluate the long-term safety, tolerability, and clinical impact of high dose creatine.

Condition Intervention Phase
Huntington's Disease (HD)
Drug: Creatine monohydrate
Phase 2

Study Type: Interventional
Study Design: Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Creatine Safety & Tolerability in Huntington's Disease (CREST-X): A Single-Center, Open-Label, Long-Term Safety & Tolerability Extension Study of Creatine in Subjects With HD

Resource links provided by NLM:

Further study details as provided by Massachusetts General Hospital:

Primary Outcome Measures:
  • Tolerability [ Time Frame: 306 Weeks ] [ Designated as safety issue: Yes ]
    Proportion of subjects able to complete treatment

Secondary Outcome Measures:
  • Clinical Measures [ Time Frame: 310 Weeks ] [ Designated as safety issue: No ]
    Components of the UHDRS (Unified Huntington Disease Rating Scale)

  • Biological Markers of Disease Progression [ Time Frame: 310 Weeks ] [ Designated as safety issue: No ]
    Biological indicators that creatine treatment might affect the progression of HD: serum creatine levels, neuroimaging, metabolomic and gene expression analysis

Enrollment: 10
Study Start Date: April 2005
Study Completion Date: November 2011
Primary Completion Date: November 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Creatine monohydrate Drug: Creatine monohydrate
Creatine taken twice daily for a total of 30 grams daily dosage or subject's highest tolerated dose


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Individuals who have completed the CREST-UP1 study.
  • Individuals who are able to take oral medication.
  • Individuals capable of providing informed consent and complying with trial procedures.

Exclusion Criteria:

  • History of known sensitivity or intolerability to creatine.
  • Clinical evidence of unstable medical illness in the investigator's judgment.

Additional eligibility criteria apply.

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Please refer to this study by its identifier: NCT01412151

United States, Massachusetts
Massachusetts General Hospital
Charlestown, Massachusetts, United States, 02129
Sponsors and Collaborators
Massachusetts General Hospital
Principal Investigator: Diana Rosas, MD, MS Massachusetts General Hospital
Principal Investigator: Steven M Hersch, MD, PhD Massachusetts General Hospital
  More Information


Responsible Party: Steven M. Hersch, Professor of Neurology, Massachusetts General Hospital Identifier: NCT01412151     History of Changes
Other Study ID Numbers: 2005P000530 
Study First Received: August 5, 2011
Results First Received: November 28, 2012
Last Updated: July 9, 2013
Health Authority: United States: Food and Drug Administration
United States: Institutional Review Board
United States: Federal Government

Keywords provided by Massachusetts General Hospital:
Huntington's Disease

Additional relevant MeSH terms:
Huntington Disease
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Cognition Disorders
Genetic Diseases, Inborn
Heredodegenerative Disorders, Nervous System
Mental Disorders
Movement Disorders
Nervous System Diseases
Neurocognitive Disorders
Neurodegenerative Diseases processed this record on May 24, 2016