NCT06422208

Brief Summary

This research study is evaluating an investigational cell product called autologous induced pluripotent stem cell (iPSC)-derived dopamine neurons. This research study is a single-center Phase 1/2a clinical trial, which will test the safety of injecting the investigational cell product into the brain of subjects with Parkinson's disease.

Trial Health

75
On Track

Trial Health Score

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

Enrollment
6

participants targeted

Target at below P25 for phase_1 parkinson-disease

Timeline
17mo left

Started Aug 2024

Longer than P75 for phase_1 parkinson-disease

Geographic Reach
1 country

1 active site

Status
enrolling by invitation

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

Study Progress56%
Aug 2024Dec 2027

First Submitted

Initial submission to the registry

May 15, 2024

Completed
5 days until next milestone

First Posted

Study publicly available on registry

May 20, 2024

Completed
3 months until next milestone

Study Start

First participant enrolled

August 7, 2024

Completed
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2027

Last Updated

September 11, 2025

Status Verified

September 1, 2025

Enrollment Period

2.3 years

First QC Date

May 15, 2024

Last Update Submit

September 5, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Safety: number and severity of adverse events and serious adverse events

    To assess the safety of autologous transplantation of cryopreserved midbrain dopamine neurons into the putamen of subjects with Parkinson's disease by measuring (1) the incidence of serious adverse events at 12 months and 18 months post-transplantation and (2) the incidence and severity of all intervention emergent adverse events.

    Baseline to 12 months post-transplant and baseline to 18 months post-transplant

Secondary Outcomes (8)

  • Change in UPDRS Part III

    18 months following transplantation

  • Change in ON time without troublesome dyskinesia

    18 months following transplantation

  • Change in OFF time

    18 months following transplantation

  • Change in baseline Levodopa Equivalent Daily Dose

    18 months following transplantation

  • Change in Unified Dyskinesia Rating Scale

    18 months following transplantation

  • +3 more secondary outcomes

Study Arms (1)

Autologous midbrain dopamine neurons

EXPERIMENTAL
Biological: Autologous midbrain dopamine neurons

Interventions

The autologous midbrain dopamine neurons are a experimental cryopreserved cell product derived from human autologous induced pluripotent stem cells. The autologous midbrain dopamine neurons will be surgically administered into the putamen, unilaterally, in a single surgical session.

Autologous midbrain dopamine neurons

Eligibility Criteria

Age55 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Males and females between ages 55 to eighty.
  • Diagnosis of Parkinson's disease with motor symptoms by neurologist according to Movement Disorder Society (MDS) 2015 Clinical Diagnostic Criteria for Parkinson's disease.
  • Diagnosis of Parkinson's disease for at least 5 years.
  • Dopamine drug responsiveness demonstrated by a positive "on/off" test with at least a 30% improvement on UPDRS III (motor) scale.
  • No gross abnormalities on MRI, including hydrocephalus or extensive white matter disease.
  • No significant cognitive impairment (Montreal Cognitive Assessment).
  • No significant untreated depression (Beck Depression Inventory 2).
  • Up to date cancer screening per primary MD.
  • Able to understand trial requirements and intervention procedures and provide written informed consent.

You may not qualify if:

  • History of intracranial surgeries.
  • Any previous thalamotomy, pallidotomy or deep brain stimulation.
  • Atypical Parkinsonism (Parkinsonism-Plus syndrome, secondary parkinsonism, hereditary parkinsonism)
  • History of psychiatric disorders including schizophrenia or psychosis likely to compromise with ability to comply with trial protocol requirements.
  • Prior history of intracerebral, subdural, or epidural hemorrhage.
  • History of malignancy within 5 years.
  • Inability to have an MRI.
  • Life expectancy \< 6 months due to concomitant illnesses.
  • Ingestion of investigational drug or recipient of investigational procedure within 6 months prior to trial.
  • Subjects with active cardiovascular and cerebrovascular disease within 6 months prior to signing the informed consent form:
  • History of severe heart failure (congestive heart failure of New York Heart Association Class II or above or left ventricular ejection fraction \< 35% by any examination method), unstable angina pectoris and myocardial infarction
  • Severe arrhythmia
  • History of cardiovascular surgery (cardiac, vascular stent surgery, angioplasty);
  • History of stroke or transient ischemic attack
  • History of subarachnoid hemorrhage
  • +10 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Brigham & Women's Hospital

Boston, Massachusetts, 02215, United States

Location

Related Publications (12)

  • Osborn TM, Hallett PJ, Schumacher JM, Isacson O. Advantages and Recent Developments of Autologous Cell Therapy for Parkinson's Disease Patients. Front Cell Neurosci. 2020 Apr 3;14:58. doi: 10.3389/fncel.2020.00058. eCollection 2020.

    PMID: 32317934BACKGROUND
  • Hallett PJ, Deleidi M, Astradsson A, Smith GA, Cooper O, Osborn TM, Sundberg M, Moore MA, Perez-Torres E, Brownell AL, Schumacher JM, Spealman RD, Isacson O. Successful function of autologous iPSC-derived dopamine neurons following transplantation in a non-human primate model of Parkinson's disease. Cell Stem Cell. 2015 Mar 5;16(3):269-74. doi: 10.1016/j.stem.2015.01.018. Epub 2015 Feb 26.

    PMID: 25732245BACKGROUND
  • Hallett PJ, Cooper O, Sadi D, Robertson H, Mendez I, Isacson O. Long-term health of dopaminergic neuron transplants in Parkinson's disease patients. Cell Rep. 2014 Jun 26;7(6):1755-61. doi: 10.1016/j.celrep.2014.05.027. Epub 2014 Jun 6.

    PMID: 24910427BACKGROUND
  • Cooper O, Hallett P, Isacson O. Using stem cells and iPS cells to discover new treatments for Parkinson's disease. Parkinsonism Relat Disord. 2012 Jan;18 Suppl 1(0 1):S14-6. doi: 10.1016/S1353-8020(11)70007-4.

    PMID: 22166414BACKGROUND
  • Hargus G, Cooper O, Deleidi M, Levy A, Lee K, Marlow E, Yow A, Soldner F, Hockemeyer D, Hallett PJ, Osborn T, Jaenisch R, Isacson O. Differentiated Parkinson patient-derived induced pluripotent stem cells grow in the adult rodent brain and reduce motor asymmetry in Parkinsonian rats. Proc Natl Acad Sci U S A. 2010 Sep 7;107(36):15921-6. doi: 10.1073/pnas.1010209107. Epub 2010 Aug 23.

    PMID: 20798034BACKGROUND
  • Cooper O, Astradsson A, Hallett P, Robertson H, Mendez I, Isacson O. Lack of functional relevance of isolated cell damage in transplants of Parkinson's disease patients. J Neurol. 2009 Aug;256 Suppl 3:310-6. doi: 10.1007/s00415-009-5242-z.

    PMID: 19711122BACKGROUND
  • Mendez I, Vinuela A, Astradsson A, Mukhida K, Hallett P, Robertson H, Tierney T, Holness R, Dagher A, Trojanowski JQ, Isacson O. Dopamine neurons implanted into people with Parkinson's disease survive without pathology for 14 years. Nat Med. 2008 May;14(5):507-9. doi: 10.1038/nm1752. Epub 2008 Apr 6.

    PMID: 18391961BACKGROUND
  • Fink JS, Schumacher JM, Ellias SL, Palmer EP, Saint-Hilaire M, Shannon K, Penn R, Starr P, VanHorne C, Kott HS, Dempsey PK, Fischman AJ, Raineri R, Manhart C, Dinsmore J, Isacson O. Porcine xenografts in Parkinson's disease and Huntington's disease patients: preliminary results. Cell Transplant. 2000 Mar-Apr;9(2):273-8. doi: 10.1177/096368970000900212.

    PMID: 10811399BACKGROUND
  • Schumacher JM, Ellias SA, Palmer EP, Kott HS, Dinsmore J, Dempsey PK, Fischman AJ, Thomas C, Feldman RG, Kassissieh S, Raineri R, Manhart C, Penney D, Fink JS, Isacson O. Transplantation of embryonic porcine mesencephalic tissue in patients with PD. Neurology. 2000 Mar 14;54(5):1042-50. doi: 10.1212/wnl.54.5.1042.

    PMID: 10720272BACKGROUND
  • Mendez I, Sanchez-Pernaute R, Cooper O, Vinuela A, Ferrari D, Bjorklund L, Dagher A, Isacson O. Cell type analysis of functional fetal dopamine cell suspension transplants in the striatum and substantia nigra of patients with Parkinson's disease. Brain. 2005 Jul;128(Pt 7):1498-510. doi: 10.1093/brain/awh510. Epub 2005 May 4.

    PMID: 15872020BACKGROUND
  • Wernig M, Zhao JP, Pruszak J, Hedlund E, Fu D, Soldner F, Broccoli V, Constantine-Paton M, Isacson O, Jaenisch R. Neurons derived from reprogrammed fibroblasts functionally integrate into the fetal brain and improve symptoms of rats with Parkinson's disease. Proc Natl Acad Sci U S A. 2008 Apr 15;105(15):5856-61. doi: 10.1073/pnas.0801677105. Epub 2008 Apr 7.

    PMID: 18391196BACKGROUND
  • Cooper O, Hargus G, Deleidi M, Blak A, Osborn T, Marlow E, Lee K, Levy A, Perez-Torres E, Yow A, Isacson O. Differentiation of human ES and Parkinson's disease iPS cells into ventral midbrain dopaminergic neurons requires a high activity form of SHH, FGF8a and specific regionalization by retinoic acid. Mol Cell Neurosci. 2010 Nov;45(3):258-66. doi: 10.1016/j.mcn.2010.06.017. Epub 2010 Jul 24.

    PMID: 20603216BACKGROUND

MeSH Terms

Conditions

Parkinson Disease

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

May 15, 2024

First Posted

May 20, 2024

Study Start

August 7, 2024

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2027

Last Updated

September 11, 2025

Record last verified: 2025-09

Data Sharing

IPD Sharing
Will not share

Locations