A Study of AAV-hAADC-2 in Subjects With Parkinson's Disease

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Sanofi ( Genzyme, a Sanofi Company )
ClinicalTrials.gov Identifier:
NCT00229736
First received: September 28, 2005
Last updated: December 2, 2013
Last verified: December 2013
  Purpose

Safety Study in subjects with Parkinson's Disease


Condition Intervention Phase
Parkinson's Disease
Genetic: AAV-hAADC-2
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase1 Open Label Safety Study of Intrastriatal Infusion of Adeno-Associated Virus Encoding Human Aromatic L-Amino Acid Decarboxylase (AAV-hAADC-2) in Subjects With Parkinson's Disease [AAV-hAADC-2-003]

Resource links provided by NLM:


Further study details as provided by Sanofi:

Primary Outcome Measures:
  • The safety and tolerability of intrastriatal administration of AAV-hAADC-2 as measured by Adverse Events in subjects with mid- to late-stage Parkinson's Disease. [ Time Frame: Time of treatment through Month 60. ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • The effect of AAV-hAADC-2 on clinical status as recorded in subject diaries, by clinical assessment, and daily levodopa requirement. [ Time Frame: Time of treatment through Month 60. ] [ Designated as safety issue: No ]
  • The relationship between the dose of AAV-hAADC-2 vector infused and the resulting level of striatal AADC expression by FMT-PET imaging. [ Time Frame: Time of treatment through Month 60 ] [ Designated as safety issue: No ]

Enrollment: 10
Study Start Date: November 2004
Study Completion Date: March 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: AAV-hAADC-2 (9x10^10 vector genomes) Genetic: AAV-hAADC-2
9 x 10^10 vector genomes (vg) of AAV-hAADC-2 in a single dose of 200 µL bilaterally infused over 4 striatal targets
Experimental: AAV-hAADC-2 (3x10^11 vector genomes) Genetic: AAV-hAADC-2
3 x 10^11 vector genomes (vg) of AAV-hAADC-2 in a single dose of 200 µL bilaterally infused over 4 striatal targets

Detailed Description:

In a patient with Parkinson's disease, the part of the brain called the substantia nigra progressively loses the ability to send dopamine signals to the striatum.

To compensate for the loss of striatal dopamine, most patients take L-dopa, an approved drug which is converted to dopamine by an essential enzyme - AADC.

With time, however, the brain loses its remaining ability to convert L-dopa to dopamine and thus the drug becomes progressively less effective.

In the therapy being studied, the gene coding for the enzyme that converts L-dopa to dopamine (AADC) is inserted into a common, non-pathogenic virus (AAV) to which > 90% of humans have been exposed.

The AAV will help to transport the AADC into the brain cells.

AAV-hAADC-2, the investigational drug being studied, is injected into the striatum during a surgical procedure.

Patients who undergo the procedure would continue to take L-dopa; AAV-hAADC-2 is intended to provide, directly to the brain, the missing enzyme needed to convert L-dopa to dopamine.

  Eligibility

Ages Eligible for Study:   40 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Documented informed consent.
  • Diagnosis of idiopathic Parkinson's disease (two of four cardinal features - tremor, bradykinesia, rigidity and postural instability - plus early dopaminergic responsiveness of symptoms and absence of any cardinal signs of more widespread neurological disease).
  • Age ≤ 75 years.
  • Age at diagnosis ≥ 40 years.
  • Duration of levodopa therapy ≥ 5 years (number of years is cumulative since diagnosis, does not need to be continuous).
  • Hoehn and Yahr Stage III to IV off medication at entry.
  • Unified Parkinson's Disease Rating Scale (UPDRS), Part III, minimum motor score of 20 to a maximum motor score of 60 in the "OFF" state.
  • Positive response to dopaminergic therapy as evidenced by a decrease in UPDRS motor scores between the defined "OFF" and "ON" states: a minimum of 8 points improvement in the UPDRS after dopaminergic therapy.
  • Candidate for surgical therapy for Parkinson's disease because of intractable motor fluctuations, defined as a subscore on UPDRS Part IV section B ("Clinical Fluctuations" score of 3 (minimum) to 7 (maximum) during the "ON" state, not responsive to optimal medical therapy.
  • MRI (magnetic resonance imaging)within the past two years and MRI does not show any conditions that are clinically significant with respect to risks for brain surgery.
  • Subjects must agree to use barrier contraception, until three consecutive PCR (polymerase chain reaction) samples are negative, if the subject or partner is of childbearing potential.
  • Must be able to comply with the requirements of the study, including the need for frequent and prolonged follow-up.
  • Subjects must have been on both optimal and stable medications for treatment of their Parkinson's disease for at least two months prior to being eligible for participation in the study.
  • Subjects must have baseline Hematology and Chemistry values within the normal laboratory ranges unless the out of range values are not clinically significant with respect to general surgery.

Exclusion Criteria:

  • Unable or unwilling to meet requirements of the study.
  • Atypical Parkinsonian syndromes due to drugs (e.g. metoclopramide, flunarizine), metabolic disorders (e.g. Wilson's disease), encephalitis, or degenerative diseases (e.g., juvenile Huntington's disease, progressive supranuclear palsy, multisystem atrophy, dementia with Lewy bodies).
  • History of three (3) hours or more of intense or violent dyskinesias in the past six (6) months.
  • Previous stereotactic neurosurgery for Parkinson's disease (pallidotomy, thalamotomy, deep brain stimulation).
  • Mini-Mental™ State Examination (MMSE) < 26 or screening neuropsychological evaluation compatible with dementia.
  • Hallucinations or delusions due to medication or underlying mental illness within 6 months of screening; documented history of schizophrenia or other psychotic disorder.
  • History of serious mood disorder that, in the opinion of the Investigator, is not effectively managed.
  • History of stroke or other currently significant or poorly controlled cardiovascular disease.
  • Intracranial neoplasia, clinically significant neurological diseases (for example, significant brain atrophy not consistent with age).
  • History of other malignancy, with the exception of treated cutaneous squamous cell or basal cell carcinoma, within 5 years.
  • Uncontrolled hypertension: systolic blood pressure consistently >160 mmHg with no attempt at treatment.
  • Coagulopathy or need for ongoing anticoagulant therapy.
  • Clinically significant immune dysfunction (for example, those that require the use of immunosuppressive drugs).
  • Geriatric Depression Scale (GDS; Mood Assessment Scale - Short Form) score of >10 or, if on anti-depressants, a score >5.
  • Monoamineoxidase (MAO)inhibitors, and/or anti-psychotic medications.
  • Contraindication to magnetic resonance imaging (MRI).
  • Neutralizing antibody titer to AAV-2 ≥ 1:1200.
  • For pre-menopausal women: a positive (+) urine pregnancy test.
  • Dopaminergic blocking agents within 30 days prior to the Baseline visit.
  • Investigational agents within 12 weeks prior to the Baseline visit.
  • Clinically active infection with adenovirus or herpes virus.
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00229736

Locations
United States, California
University of California, San Francisco
San Francisco, California, United States
Sponsors and Collaborators
Genzyme, a Sanofi Company
Investigators
Study Director: Medical Monitor Genzyme, a Sanofi Company
  More Information

Publications:
Responsible Party: Sanofi ( Genzyme, a Sanofi Company )
ClinicalTrials.gov Identifier: NCT00229736     History of Changes
Other Study ID Numbers: AAVhAADC2003
Study First Received: September 28, 2005
Last Updated: December 2, 2013
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases

ClinicalTrials.gov processed this record on July 29, 2014