NCT01329926

Brief Summary

The aim of this study is to develop and optimize methods to isolate, propagate and differentiate adult human neural stem cells from patients with degenerative neurological disorders like Parkinson's disease.

Trial Health

30
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started Jun 2011

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 31, 2011

Completed
6 days until next milestone

First Posted

Study publicly available on registry

April 6, 2011

Completed
3 months until next milestone

Study Start

First participant enrolled

June 30, 2011

Completed
11.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2022

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2023

Completed
Last Updated

April 12, 2022

Status Verified

April 1, 2022

Enrollment Period

11.5 years

First QC Date

March 31, 2011

Last Update Submit

April 4, 2022

Conditions

Keywords

Parkinson's diseaseNeural stem cells

Outcome Measures

Primary Outcomes (1)

  • Neuronal differentiation into dopaminergic neurons

    Differentiation of at least 10% of dopaminergic neurons is targeted as the primary outcome measure

    6 months

Study Arms (1)

Neural stem cells

Procedure: Harvesting of neural stem cells

Interventions

During neurosurgical procedures, tissue samples are obtained along trajectory of implanted electrodes or removal of stimulators previously implanted.

Neural stem cells

Eligibility Criteria

Age35 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients with Parkinson's disease or parkinsonism

You may qualify if:

  • Able to give informed consent prior to study
  • Male or Female with Diagnostic Criteria of Parkinson's disease or neurodegenerative disorder undergoing a neurosurgical procedure
  • Age 35 to 85 years old
  • Parkinson's disease not due to trauma, infection, brain tumor, cerebrovascular disease
  • Hoehn and Yahr Stage III or IV
  • Parkinson's disease observed in the absence of:
  • Oculomotor palsy
  • Cerebellar sign
  • Orthostatic hypotension (drop greater than 20mmHg in mean pressure)
  • Pyramidal sign
  • Amyotrophy
  • Good general health or stable medical condition well controlled, without contraindications to anesthesia

You may not qualify if:

  • Patients with severe dementia and brain atrophy on MRI
  • Patients with severe hypertension; renal, liver, cardiac or other major organ disease; coagulopathy; cancer; other significant systemic illnesses; hepatitis, HIV
  • Patients older than 85 or younger than 35
  • Patients who withhold informed consent
  • Patients with a history of alcohol or drug abuse
  • Sexually active women of childbearing potential without adequate form of birth control
  • Evidence of abnormal coagulation or anticoagulant therapy
  • Pregnancy or lactation
  • History of seizure disorders or current use of antiepileptic medication
  • Severe cognitive impairment
  • Clinically significant laboratory abnormality

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Los Angeles Neurosurgical Institute

Los Angeles, California, 90211, United States

Location

Related Links

Biospecimen

Retention: SAMPLES WITH DNA

Brain tissue obtained during neurosurgical procedures yields undifferentiated neural stem cells that are subsequently expanded.

MeSH Terms

Conditions

Parkinson DiseaseParkinsonian Disorders

Condition Hierarchy (Ancestors)

Basal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Study Officials

  • Michel F Levesque, MD

    Los Angeles Neurosurgical Institute

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
INDUSTRY
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

March 31, 2011

First Posted

April 6, 2011

Study Start

June 30, 2011

Primary Completion

December 31, 2022

Study Completion

December 31, 2023

Last Updated

April 12, 2022

Record last verified: 2022-04

Locations