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Project Aim:

1 - To change the current diagnostic criteria to include cognitive, psychiatric, behavioral, and vegetative decline for diagnosis via the UHDRS.

    • UHDRS Q80 should be changed: Q80 diagnostic criteria (Motor, Cognitive, Behavioral, and Functional components) do you believe with a confidence level ≥99% that this participant has manifest HD? (0 = No, 1 = Yes)

    • Confidence level ≥99% should be changed to ≥50%

2 - If a patient has an expanded CAG (mutation above normal range) and expresses cognitive, psychiatric, behavioral, or vegetative decline, the patient should receive a diagnosis of Huntington's disease.  A diagnosis for patients with these symptoms of Huntington's disease will facilitate the necessary supports and services they need. 

Current Diagnostic Criteria for Huntington's Disease:

  • Does not meet the needs of our patients and families.

  • Excludes a large group of our patients who do not express overt motor symptoms (chorea).

  • Does not effectively support our patients who have manifested: psychiatric, cognitive, behavioral, and vegetative symptoms of Huntington’s disease.

How did Project CHANGE begin?

Patients / Family Feedback:

The endeavor and goal to change the diagnostic criteria for Huntington’s disease are driven by patients and families worldwide., and its Senior Medical Advisor, Dr. Herwig Lange (George Huntington Institute of Germany), asked the international Huntington’s disease community to participate in an anonymous survey on October 13, 2020. The survey was shared via social media platforms (Facebook, Twitter, LinkedIn, Instagram, etc.), WeHaveAFace Global Times (electronic newspaper), WeHaveAFace TV, and WeHaveAFace global email database. 

The Survey Question: “Should the diagnostic criteria for Huntington's disease be reviewed and updated?”

*In the survey, "other symptoms" pertain to depression, anxiety, behavioral issues, mood swings, physical abuse, social issues, alcohol/drug issues, suicidal thoughts/actions, apathy, sexual promiscuity, inability to hold employment/problems at work, etc.* 


  • Over 5,000 of our patients/caregivers participated, and saturation was reached via early review of data on November 15, 2020; however, the survey remained open until January 7, 2021, for additional data collection. 

  • Overall: 95% of our patients and families surveyed agreed that the diagnostic criteria for Huntington’s disease should be reviewed and updated.

  • Participating countries: USA, Canada, Mexico, England, Scotland, Ireland, Germany, Finland, Australia 

  • See survey results and read comments from our patients and families.

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Dr. Hugh Rickards, Professor of Neuropsychiatry (National Centre for Mental Health, Birmingham, England), brought up a fundamental question for our patients and families.  With Dr. Rickards’ question in mind, the international group continued to move this mission forward and published an anonymous poll on March 1, 2021.  The poll was shared via social media platforms (Facebook, Twitter, Instagram, and email). ​

Dr. Rickards’s question was:   “Why is a diagnosis of Huntington's disease important to you?"

  • On March 7, 2021, over 4,000 individuals within the international Huntington’s community voiced their opinion and participated.  The poll closed on March 15, 2021.


  • Participating countries: USA, Canada, Mexico, England, Scotland, Ireland, France, Germany, Netherlands, Italy, Australia, and Spain. 

Chart expressing Huntington’s disease community polling results:

Poll Chart

Data from the three lowest polled responses:

  • My parent did not/will not get tested, but I want to know.

  • To participate in studies and trials.

  • To plan to have biological children.

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Project CHANGE!

Petition Results

Once the new proposal was completed, we brought the new clinical diagnostic criteria recommendations to our global population.  Via a petition, we asked patients, caregivers, family, friends, and our HD medical professionals to sign the petition if they agreed with the updated recommendations.  We were not surprised by the results!  Please review them below. 

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Project CHANGE partnering HD organizations and medical professionals wish to underscore that a diagnosis of Huntington's disease is not for everyone. This is not our aim. We fully understand and recognize the implications of a diagnosis. 

Based on our global polls and petition feedback, Dr. Herwig Lange (George Huntington Institute, Germany) created a proposal of recommendations for new clinical diagnostic criteria for Huntington's disease. This proposal will benefit patients with a diagnosis of Huntington's disease when it is needed.  We are pleased that a project of this magnitude was driven by the perspectives of our global Huntington's disease community.  Decision-making on any diagnostic criteria must include the population being served. 

Recommendations for New Clinical Diagnostic Criteria of Huntington’s Disease 


This proposal was written by Dr. Herwig Lange (George Huntington Institute, Germany), and supported by: Dr. Thomas Bird (Founder of University of Washington HDSA Center of Excellence), Dr. Travis Cruickshank (Edith Cowan University, Perth Australia), Dr. Matthias Dose (founder of Huntington-Zentrum Süd, Munich, Germany). Dr. Clare Eddy (Birmingham and Solihull Mental Health NHS Foundation Trust, England), Dr. Jane Paulsen (University of Wisconsin-Madison), Dr. Hugh Rickards (University of Birmingham, England), Dr. Adolf Weindl (Technische Universität München, Munich, Germany),

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Project CHANGE International Support Network

Without the support and participation from the Huntington's community, nothing can change. Therefore, it is paramount that patients and families take the lead in bringing about the changes we need.  We are also pleased that many HD organizations and medical professionals are supporting this initiative.  Together we can better the lives of our Huntington's patients and families.

Dr. Herwig Lange (George Huntington Institute), Dr. Ralf Reilmann (George Huntington Institute), James Valvano (WeHaveAFace), Louise Vetter (HDSA), Debra Lovecky (HDSA), Dr. Jane Paulsen (University of Wisconsin, Madison), Dr. Hugh Rickards (National Centre for Mental Health, Birmingham), Dr. Travis Cruickshank (Edith Cowan University), Mayke Oosterloo (Maastricht University Medical Center, NL), Dr. Thomas Bird (HDSA CoE, University of Washington),  Dr. Roger Barker (University of Cambridge, UK), Dr. Raymund A. C. Roos (Leiden University Medical Centre, NL),  Debbi Fox-Davis (, Donaji Toledo, (AMEH - La Asociación Mexicana de la Enfermedad de Huntington), Tatiana Henrique, (ABH – Associação Brasil Huntington),  Cath Stanley,  (HDA - Huntington's Disease Association), Frances Saldana, (, Dr. Clare Eddy, (Birmingham and Solihull Mental Health NHS Foundation Trust).

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Project Support
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