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Trial record 13 of 32 for:    Recruiting Studies | Huntington Disease

Follow-up Measurement of Brain PDE10A Enzyme Levels in Huntington´s Disease Gene Expansion Carriers (LONGPDE10)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT02956148
Recruitment Status : Recruiting
First Posted : November 7, 2016
Last Update Posted : November 7, 2016
Information provided by (Responsible Party):

Study Description
Brief Summary:
The aim of this study is to measure longitudinally the availability of the PDE10A enzyme in HDGECs using the radioligand [18F]MNI-659. The study will be a follow-up, examining HDGECs from the CHDIKI1201/PET-HD-PDE10A (NCT02061722) study from 18 to 28 months after the initial PET measurement.

Condition or disease Intervention/treatment Phase
Huntington's Disease Radiation: Radioligand [18F]MNI-659 Early Phase 1

Detailed Description:
The HDGECs will perform 2 study visits: Visit 1 (screening) and Visit 2 (PET analysis utilizing the radioligand [18F]MNI-659). There will also be 2 telephone follow ups; one after Visit 1 (telephone follow-up after screening) and one after Visit 2, (telephone follow-up after PET). Study visits and telephone follow-ups will take place during a maximum of 97 days.

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 45 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Follow-up Measurement of Brain Phosphodiesterase 10 A (PDE10A) Enzyme Levels in Huntington´s Disease Gene Expansion Carriers, 18 to 28 Months After Initial Positron Emission Tomography (PET) Measurement in CHDIKI1201/PET-HD-PDE10A (NCT02061722)
Study Start Date : June 2015
Estimated Primary Completion Date : June 2018
Estimated Study Completion Date : September 2018

Arms and Interventions

Arm Intervention/treatment
Experimental: Radioligand [18F]MNI-659

All subjects will receive a single intravenous dose of the radioligand [18F]MNI-659 (investigational medicinal product [IMP]) and undergo PET imaging.

The radioligand [18F]MNI-659 will be administered at a dose of less than 5 micrograms, i.e. within the micro dosing concept, and no pharmacological effects are expected.

The injected radioactivity of [18F]MNI-659 will be 185 MBq/70 kg of body weight ± 10%.

Radiation: Radioligand [18F]MNI-659
The effective radiation dose for the injection of [18F]MNI-659 is approximately 5.6 mSv (approximately 2 years of background radiation in Sweden) for an average person weighing 70 kg.

Outcome Measures

Primary Outcome Measures :
  1. The longitudinal changes of PDE10A enzyme availability in the caudate, putamen, and globus pallidus of Huntington's Disease Gene Expansion Carriers by comparison of the follow-up and initial PET measurements. [ Time Frame: The follow up PET measurement can be performed from 18 to 28 months after the initial PET measurement that was performed in the CHDIKI/PET-HD-PDE10A Study ]
    The HDGECs will perform 2 study visits; Visits 1 (screening) and Visit 2 (PET) and 2 telephone follow ups, one after Visit 1 (telephone follow-up after screening) and one after Visit 2, (telephone follow-up after PET) 18 to 28 months after the initial PET measurement conducted in the CHDIKI1201/PET-HD-PDE10A study. An individual subject's participation in this study will last for a maximum of 97 days

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 73 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Have participated in and completed study CHDIKI1201/PET-HD-PDE10A and are capable of providing informed consent or have a legal representative authorized to give consent on their behalf.
  • Otherwise healthy according to medical history, no co-morbidity of psychotic disorders, physical examination, vital signs and laboratory assessments
  • Willing to travel to Stockholm (with a companion if requested) for PET examinations
  • Suitable physically and psychologically to travel to Stockholm and undergo PET examinations, as judged by the recruiting Investigator with attention given to symptoms of chorea and anxiety
  • Willing to comply with the use of adequate contraceptive measures

Exclusion Criteria:

  • Any disease, condition or concomitant medications that significantly compromises the function of the body systems and that, in the opinion of the Investigator might interfere with the conduct of the study or the interpretation
  • Regular use of any medication prohibited by this protocol (selective or non-selective PDE inhibitors), with the exception for erectile dysfunction medication, which may be temporarily discontinued prior to the PET measurement
  • History of anaphylactoid or anaphylactic reactions to any allergen including drugs and contrast media
  • History of other neurological condition (including brain surgery, intracranial hematoma, stroke/cerebrovascular disorders, epilepsy), co-morbidity of psychiatric disorders
  • Clinically relevant findings in hematological, biochemical testing or 12-lead ECG as determined by the evaluating physician
  • Female subjects who are breast-feeding or have a positive pregnancy test at screening or at Visit 2
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02956148

Contact: Anne Hallgårde +46 (0)46 280 19 17 anne.hallgarde@tfscro.com
Contact: Thomas Hansson +46 709 13 51 26 thomas.hansson@tfscro.com

The Memory Clinic, Rigshopitalet Not yet recruiting
Copenhagen, Denmark
Contact: Jorgen Nielsen, MD, PI    +45 35 45 68 01    jnielsen@sund.ku.dk   
Principal Investigator: Jorgen Nielsen, MD, PhD         
Leiden University Medical Center, Department of Neurology Not yet recruiting
Leiden, Netherlands, K5Q112
Contact: Reineke Bos, MD    +31 715266094    R.Bos@lumc.nl   
Principal Investigator: R.A.C. Roos, MD         
University of Oslo, Nevrologisk poliklinikk Recruiting
Oslo, Norway, 0372 Oslo
Contact: Ragnhild Wehus    +47 23 07 55 80    rwehus@ous-hf.no   
Principal Investigator: Jan Frich, MD, PhD         
Skane Universitetssjukhus Lund, Neurologiska kliniken Recruiting
Lund, Sweden, SE-221 85
Contact: Jan Reimer, RN    +46 46 17 41 23    jan.reimer@med.lu.se   
Principal Investigator: Hakan Widner, MD         
Karolinska Universitetssjukhus, Huddinge Recruiting
Stockholm, Sweden, SE-141 86
Contact: Tina Wallden, RN    +46 70 627 41 40    tina.wallden-reza-soltani@karolinska.se   
Principal Investigator: Per Svenningsson, MD, PhD         
Sub-Investigator: Martin Paucar Arce, MD         
Karolinska University Hospital Active, not recruiting
Stockholm, Sweden, SE-171 76
Uppsala University Hospital Recruiting
Uppsala, Sweden
Contact: Dag Nyholm, MD    +4618-6115038    Dag.Nyholm@neuro.uu.se   
Principal Investigator: Dag Nyholm, MD         
Sponsors and Collaborators
CHDI Foundation, Inc.
Principal Investigator: Andrea Varrone, MD, PhD Karolinska University Hospital
Study Director: Cristina Sampaio, MD, PhD CHDI Foundation, Inc.
More Information

Responsible Party: CHDI Foundation, Inc.
ClinicalTrials.gov Identifier: NCT02956148     History of Changes
Other Study ID Numbers: CHDIKI1401
First Posted: November 7, 2016    Key Record Dates
Last Update Posted: November 7, 2016
Last Verified: November 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Additional relevant MeSH terms:
Huntington Disease
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Heredodegenerative Disorders, Nervous System
Neurodegenerative Diseases
Genetic Diseases, Inborn
Cognition Disorders
Neurocognitive Disorders
Mental Disorders