Randomized, Placebo Controlled Study Of The Efficacy And Safety Of PF-02545920 In Subjects With Huntington's Disease


About this study

This study is a 26 week, randomized, parallel group, double blind comparison of PF-02545920 5 mg, PF-02545920 20 mg, and placebo dosed BID in the treatment of motor impairment of subjects with Huntington's Disease. A total of approximately 260 subjects are planned to be randomized in the study. Primary endpoint is the change from baseline in the Total Motor Score (TMS) assessment of the Unified Huntington Disease Rating Scale (UHDRS) after 26 weeks of treatment. secondary endpoints will include change from baseline in the Total Maximum Chorea (TMC) score of the UHDRS after 13 and 26 weeks of treatment and Clinical Global Impression-Improvement score after 13 and 26 weeks of treatment.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Please contact the study team to discuss whether or not you are eligible to participate in a study.

Inclusion Criteria:

  • CAG repeat equal or greater than 36;
  • Total motor score equal or greater than 10;
  • Total functional capacity equal or greater than 7.

Exclusion Criteria:

  • Clinically significant neurologic disorder other than Huntington's disease;
  • Other severe acute psychiatric conditions, mania and/or psychosis;
  • History of neutropenia, and myeloproliferative disorders

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

John Caviness, M.D.

Closed for enrollment

More information


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Study Results Summary

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Supplemental Study Information

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