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Safety and Efficacy Study of VY-AADC01 for Advanced Parkinson's Disease

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. Read our disclaimer for details. Identifier: NCT03065192
Recruitment Status : Active, not recruiting
First Posted : February 27, 2017
Last Update Posted : March 2, 2020
Voyager Therapeutics
Information provided by (Responsible Party):
Neurocrine Biosciences

Brief Summary:
Safety and efficacy of AADC gene transfer in participants with Parkinson's disease.

Condition or disease Intervention/treatment Phase
Idiopathic Parkinson's Disease Parkinson's Disease Basal Ganglia Disease Brain Diseases Central Nervous System Diseases Movement Disorders Nervous System Diseases Neurodegenerative Diseases Parkinsonian Disorders Drug: VY-AADC01 Phase 1

Detailed Description:

Parkinson's disease (PD) is a neurodegenerative disorder involving loss of dopamine producing neurons located in the striatum. Levodopa is the primary treatment used to treat Parkinson's disease, which converts to dopamine by the enzyme (protein) Aromatic L-Amino Acid Decarboxylase (AADC). As PD progresses, the amount of AADC levels in the brain decreases, and in turn, reduces the amount of dopamine that is produced with each dose of levodopa.

The primary objective of this study is to evaluate the safety of increasing AADC levels, via gene delivery. The investigational drug, termed VY-AADC-01, will be injected directly into the striatum during a neurosurgical procedure that is performed with real-time MRI imaging to monitor delivery.

Participants will continue to take their Parkinson medications, including levodopa while participating in this study.

The safety and potential clinical responses to VY-AADC-01 will be assessed by repeated clinical evaluations of Parkinson's disease, treatment review phone calls, cognitive tests, laboratory blood tests, patient reported outcomes scales, patient diaries, collection of adverse events, and neuro-imaging. Clinical evaluations will be performed over a 3 year follow-up period.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 16 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open-label Safety and Efficacy Study of VY-AADC01 Administered by MRI-Guided Convective Infusion Using a Posterior Trajectory Into the Putamen of Participants With Parkinson's Disease With Fluctuating Responses to Levodopa
Actual Study Start Date : May 11, 2017
Estimated Primary Completion Date : December 2021
Estimated Study Completion Date : December 2021

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: VY-AADC01 Single Dose
9.4 x 10^12 vector genomes of VY-AADC01
Drug: VY-AADC01
Single dose, neurosurgically infused, bilaterally into the striatum.

Primary Outcome Measures :
  1. Grading of adverse Events/Serious Adverse Events (AE's/SAE's) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Grading will be assessed using NCI CTCAE, version 4.03.

  2. Magnetic Resonance Imaging (MRI) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Safety of VY-AADC01 will be assessed by any clinically significant abnormalities on MRI scans as compared to Baseline.

  3. Routine physical examinations [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Safety of VY-AADC01 will be assessed by routine physical examinations.

  4. Routine clinical laboratory analysis [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Safety of VY-AADC01 will be assessed by routine clinical laboratory analysis.

  5. Change in Columbia-Suicide Severity Rating Scale (C-SSRS) results [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    C-SSRS is a standardized suicidal rating system.

Secondary Outcome Measures :
  1. Change in Parkinson's medications [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Change in Parkinson's medications compared to Baseline.

  2. Change in motor function using Parkinson Disease Diaries [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Diary used to assess changes in PD motor symptoms.

  3. Change in motor function using a Stand-Walk-Sit Test [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Standardized test used in PD studies to assess functional mobility.

  4. Change in motor function using Modified Hoehn and Yahr Scale [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Scale used to measure overall level of disability due to PD.

  5. Change in motor function using Unified Parkinson's Disease Rating Scale (UPDRS) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Standard assessment scale used to quantify signs and symptoms of PD.

  6. Change in occurrence of dyskinesia using Unified Dyskinesia Rating Scale (UDysRS) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Comprehensive rating tool used to assess essential features of dyskinesia in PD.

  7. Change in mood using Beck Depression Inventory II (BDI-II) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Self-administered measure of depression symptoms.

  8. Change in cognitive function using Modified Cognitive Assessment (MoCA) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Rapid screening instrument for mild cognitive dysfunction.

  9. Change in cognitive function using Mattis Dementia Rating Scale - Second Edition (MDRS-2) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Standardized neuropsychological test battery to measure dementia.

  10. Change in compulsive behavior using the Questionnaire Impulsive-Compulsive Disorders in Parkinson's Disease-Rating Scale (QUIP-RS) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Rating scale to quantify the severity of a variety of compulsive disorders and behaviors.

  11. Change in sleep quality and disturbance using the Parkinson's Disease Sleep Scale 2 (PDSS-2) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Visual analogue scale addressing 15 commonly reported symptoms associated with sleep disturbance in PD.

  12. Change in Non-Motor System Scale (NMSS) [ Time Frame: Baseline to 3 Years Gene Transfer ]
    Standard rating scale that assesses the non-motor symptoms that may be associated with PD.

  13. Change in quality of life using Parkinson's Disease Questionnaire (PDQ39) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Validated questionnaire to measure health related quality of life in PD patients.

  14. Change in quality of life using Schwab and England Scale [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    PD specific disability scale used to express the levels of independence with activities of daily living.

  15. Change in quality of life using in Clinical Global Impression Scale (CGI) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Scale used to assess treatment response in psychiatric patients.

  16. Change in quality of life using Patient Global Impression Scale (PGI) [ Time Frame: Baseline to 3 Years After Gene Transfer ]
    Scale used to assess participants improvement in their PD symptoms.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   40 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosed with idiopathic PD.
  • Adequate duration of levodopa therapy.
  • Disease duration of at least 5 years or more.
  • Modified Hoehn & Yahr Staging with at least 2.5 hours or more in the OFF state.
  • Candidate for surgical intervention because of disabling motor complications.
  • UPDRS Part III (total score) of at least 25 in the OFF state.
  • Unequivocal responsiveness to dopaminergic therapy.
  • Stable Parkinson's symptoms and medications for at least 4 weeks prior to screening evaluation.
  • Ability to comprehend and sign the informed consent.
  • Normal laboratory values prior to surgery.
  • Medically and mentally capable of undergoing and complying with the surgical procedure and protocol requirements.
  • Ability to travel to study visits alone or able to designate a caregiver.
  • Subject agrees to defer any neurological surgery, including deep brain stimulation, until after completing the 12 month study visit (unless recommended by study neurologist).
  • Approved by the Eligibility Review Committee.

Exclusion Criteria:

  • Atypical or secondary parkinsonism, including but not limited to symptoms believed to be due to trauma, brain tumor, infection, cerebrovascular disease, other neurological disease, or to drugs, chemicals, or toxins.
  • Presence of dementia as defined by a Mattis Dementia Rating Scale - Second Edition (MDRS-2) score of less than 130 at screening.
  • Presence or history of psychosis, with the exception of mild, benign hallucinations believed in the judgment of the Investigator to be related to Parkinson's medications.
  • Presence of severe depression, as indicated by a BDI-II score greater than 28, or a history of a major affective disorder within 5 years of screening evaluation.
  • Active suicidal ideation or suicide attempt within 5 years of screening evaluation.
  • History of substance abuse within 2 years of screening evaluation.
  • Brain imaging abnormalities in the striatum or other regions that would substantially increase risk of surgery.
  • Contraindication to MRI and/or gadoteridol.
  • Coagulopathy or inability to temporarily stop any anticoagulation or antiplatelet therapy prior to surgery.
  • Prior brain surgery including lesioning procedures, deep brain stimulation, infusion therapies or any other brain surgery.
  • Prior gene transfer.
  • History of stroke, poorly controlled or significant cardiovascular disease, diabetes, or any other acute or chronic medical condition.
  • History of malignancy other than treated carcinoma in situ within 3 years of screening evaluation.
  • Clinically apparent or laboratory-detected infection.
  • Prior or current treatment with any investigational agent within 2 months of screening evaluation.
  • Inability to comply with the procedures of the protocol, including completion of paper Parkinson's disease diaries, frequent and prolonged study visits including off medication visits, and travel.
  • Chronic immunosuppressive therapy, including chronic steroids, immunotherapy, cytotoxic therapy, and chemotherapy.
  • Any serious medical condition or abnormal finding on physical examination or laboratory investigation that would substantially increase the risks of the study procedures.
  • Any medical condition that is likely to lead to disability during the course of the study and interfere with or confound study assessments.
  • Pregnant and lactating women.
  • Male or female with reproductive capacity who is unwilling to use barrier contraception for 6 months after surgery.
  • Plans to receive any vaccination within 30 days of surgery.
  • Any factors, medical or social, which would likely cause the participant to be unable to follow the study protocol, including geographical inaccessibility.
  • Ongoing treatments including neuroleptic medications, apomorphine, or levodopa infusion therapy (Duopa®).
  • Plans to participate in any other therapeutic intervention study within 12 months after surgery.

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 identifier (NCT number): NCT03065192

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United States, California
University of California, San Francisco (UCSF)
San Francisco, California, United States, 94143
United States, Georgia
Emory University
Atlanta, Georgia, United States, 30322
United States, Ohio
Ohio State University (OSU)
Columbus, Ohio, United States, 43210
United States, Pennsylvania
University of Pittsburgh Medical Center (UPMC)
Pittsburgh, Pennsylvania, United States, 15213
Sponsors and Collaborators
Neurocrine Biosciences
Voyager Therapeutics
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Study Director: Steve Hersch, MD Voyager Therapeutics, Inc.
Additional Information:
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Responsible Party: Neurocrine Biosciences Identifier: NCT03065192    
Other Study ID Numbers: PD-1102
First Posted: February 27, 2017    Key Record Dates
Last Update Posted: March 2, 2020
Last Verified: February 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Neurocrine Biosciences:
Gene Therapy
Parkinson's Disease
Aromatic L- Amino Acid Decarboxylase
Viral Vector
Gene Transfer
Additional relevant MeSH terms:
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Parkinson Disease
Movement Disorders
Neurodegenerative Diseases
Brain Diseases
Central Nervous System Diseases
Parkinsonian Disorders
Basal Ganglia Diseases
Nervous System Diseases
Pathologic Processes