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NCT06753331 | RECRUITING | Parkinson's Disease

A Multicenter Study to Evaluate Safety, Tolerability, and Clinical Responses of DSP-1083 Into Subjects With Parkinson's Disease
Sponsor:

Sumitomo Pharma America, Inc.

Brief Summary:

The Goal of this study is to evaluate the safety, tolerability, and clinical responses following implantation of DSP-1083. Study enrolls both male and female patients in 2 cohorts. This study will be held in approximately 5-8 study sites in United States

Condition or disease

Parkinson's Disease

Intervention/treatment

DSP-1083 implantation

Sham surgery treatment

Phase

PHASE1

PHASE2

Detailed Description:

This is a multicenter first-in-human (FIH) study designed to evaluate the safety, tolerability, and clinical responses following implantation of dopaminergic progenitor cells derived from induced pluripotent stem cells (DSP-1083) compared with sham surgery. Safety is measured based on adverse events, changes in neuropsychiatric/cognition status, and serial neuroimaging (ie, engraftment status, graft expansion, rejection) over 104 weeks. Cohort 1 sentinel subject (SS1) will undergo 2 unilateral surgical procedures separated by approximately 28 weeks, whereas SS2 and all subsequent subjects will undergo 1 bilateral surgical procedure.

Study Type : INTERVENTIONAL
Estimated Enrollment : 25 participants
Masking : QUADRUPLE
Primary Purpose : TREATMENT
Official Title : A Multicenter, Sham-controlled, Randomized Study to Evaluate the Safety, Tolerability, and Clinical Responses Following Stereotactic Intracranial Implantation of DSP-1083 Into Subjects With Parkinson's Disease
Actual Study Start Date : 2024-12-18
Estimated Primary Completion Date : 2030-12-15
Estimated Study Completion Date : 2030-12-15

Information not available for Arms and Intervention/treatment

Ages Eligible for Study: 40 Years to 72 Years
Sexes Eligible for Study: ALL
Accepts Healthy Volunteers:
Criteria
Inclusion Criteria
  • 1. Men or women aged ≥ 40 and ≤ 72 years at the time of informed consent with a clinically established diagnosis of Parkinson's disease in accordance with the Movement Disorder Society (MDS) Clinical Diagnostic Criteria for Parkinson's Disease.
  • 2. Subject has a clinically established diagnosis of PD for ≥ 4 years.
  • 3. Subject has suboptimal control of PD symptoms, with optimized oral antiparkinsonian medication regimen including levodopa/carbidopa monotherapy or levodopa/carbidopa plus antiparkinsonian medications, with stable dosing for ≥ 2months prior to screening.
  • 4. Subject has a L-DOPA response of ≥ 30% without the influence of antiparkinsonian medications at Screening.
  • 5. Subject has a Modified Hoehn and Yahr stage 3 - 4 in the Off state.
  • 6. Subject has a pretreatment 18F-DOPA PET scan consistent with PD.
  • 7. Subject has both On and Off states as demonstrated by the MDS-UPDRS Part III/IV and the Hauser patient daily diary.
  • 8. Subjects must meet the following race criteria: 2 of the up to 5 sentinel subjects will be of Asian race, defined as having at least 2 grandparents who are Japanese, Taiwanese, Korean, or Chinese. Subjects in Cohort 2 can be of any race.
  • 9. Subject is approved by the Enrollment Authorization Eligibility Committee following review of all required information collected during Screening.
Exclusion Criteria
  • 1. Subject has atypical parkinsonian syndrome (eg, progressive supranuclear palsy \[PSP\], multiple system atrophy \[MSA\], dementia with Lewy bodies \[DLB\], corticobasal degeneration, Parkinson-plus syndrome, vascular parkinsonism, secondary parkinsonism, hereditary parkinsonism).
  • 2. Subject has non-PD neurological symptoms or evidence of non-PD brain disease (eg, tumor, inflammation, active or history of vascular disorder, history of cerebral hemorrhage, Alzheimer's disease, or other neurodegenerative disorder) based on neuroimaging and/or medical history that would preclude study participation.
  • 3. Subject has psychiatric symptoms, cognitive impairment, depression, dementia, or other behavioral disorder that would preclude study participation based on Investigator decision.
  • 4. Subject has received previous striatal or other extrapyramidal system PD treatments, including deep-brain stimulation, central nervous system (CNS) ablation (eg, pallidotomy, thalamotomy), implanted cell, or gene therapy, and/or focused ultrasound therapy.
  • 5. Subject has peak-dose dyskinesia of sufficient severity that precludes study participation, defined as any item score of ≥ 3 (moderate dyskinesia) on the UDysRS Part 1B (Patient Dyskinesia Questionnaire) AND/OR any item score of ≥ 2 (moderate dyskinesia) on Part 3 (Objective Evaluation of Dyskinesia Disability) Intensity Scale: Impairment. Subject has another type (eg, diphasic dyskinesia) or an unusual pattern of dyskinesia.
  • 6. Subject has a history of, or concurrent abnormal immune function that may adversely affect the engraftment of the cell implants and use of adjunctive immunosuppressants.
  • 7. The subject has the following clinical laboratory test results at Screening
    • * Neutrophil count \< 2,000/μL.
    • * Platelet count \< 5.0 × 104/μL.
    • * Aspartate aminotransferase (AST), alanine aminotransferase (ALT) \> 3.0 × upper limit of normal.
    • * Total bilirubin \> 1.5 × upper limit of normal.
    • * Persistent estimated glomerular filtration rate (eGFR) \< 60 mL/min/1.73 m2.
    • * Poorly controlled blood glucose in diabetic subjects (glycosylated hemoglobin \> 9.0%, or fasting serum glucose ≥ 200mg/dL).
    • 8. Subject has any disorder that would contraindicate general anesthesia, conscious sedation or stereotactic surgery.
    • 9. Subject has any clinically significant unstable medical condition or any clinically significant chronic disease that would pose a risk to the subject or that might confound the results of the study. In cases in which the impact of the condition upon risk to subject or study results is unclear, the Medical Monitor should be consulted.
A Multicenter Study to Evaluate Safety, Tolerability, and Clinical Responses of DSP-1083 Into Subjects With Parkinson's Disease

Location Details

NCT06753331

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How to Participate

Want to participate in this study, select a site at your convenience, send yourself email to get contact details and prescreening steps.

Locations

RECRUITING

United States, Kentucky

University of Kentucky Medical Center

Lexington, Kentucky, United States, 40536

RECRUITING

United States, New York

New York Presbyterian Hospital-Columbia University Medical Center

New York, New York, United States, 10032