The Horizon Trial is being conducted at many sites across the United States and Canada, as well as in Europe and Australia. If you meet the trial entry requirements, please call the Huntington Study Group toll-free in North America at 800-487-7671 or the European Huntington's Disease Network in the Europe at +44 7791 985313 for information about being part of the Horizon Trial.

United States trial sites

United States Canada Europe Australia

United States trial sites

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Canadian trial sites

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European trial sites

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Australian trial sites

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