Welcome to the Enroll-HD Portal, your access point to contribute to the largest database of clinical data for Huntington’s disease (HD). The overarching objective of Enroll-HD is to accelerate the development of therapeutics for HD by: - compiling uniform clinical data and biological samples to better understand the natural history of HD;
 - building a more comprehensive database – including biological samples – that will be accessible to any HD investigator worldwide;
 - facilitating clinical sub-studies and the development of validated HD assessment tools;
 - fostering good clinical care and improving health outcomes for both patients and families;
 - expediting recruitment into future global clinical trials of candidate therapeutics.
 
 Enroll-HD Newsletter and Monthly News 
Bulletin: The monthly News Bulletin and quarterly newsletter 
for research participants and site staff can be found on the    Enroll-HD 
website. 
Enroll-
HD Study Status:
 
| Total Participating sites: | 
187 | 
(179) | 
 
| Participating countries: | 
23 | 
  | 
 
| Total participants: | 
30'038 | 
(21'414) | 
 
| Total visits: | 
153'966 | 
  | 
 
 
July 21, 2023.  |   | Enroll-HD News: 
 
 Enroll-HD 1.20.11 (Mar 2025) 
- Finish continued data entry of General visits with Submit General for Review
 - Finish continued data entry of Family History with Complete Data Entry
 - Family History year of birth can be earlier than 1800.
 
 Plasma Collection 1.0 (July 2019) 
- Selected sites have been invited to participate in a longitudinal collection of plasma.
 
- Site selection has been based on several criteria.
 
- The Enroll-HD EDC has been upgraded to allow to collect plasma from participants.
 
 HDClarity 3.0 (May 2019) - Study protocol 3.0 implemented (annual sampling visits)
 - Partial sampling visits possible
 - Further enhancements
 
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