A Study to Investigate the Efficacy and Safety of Bemdaneprocel in Adults Who Have Parkinson's Disease

Официальное название

exPDite-2: A Phase 3 Study to Assess the Efficacy and Safety of Midbrain Dopaminergic Neuronal Cell Therapy (Bemdaneprocel) for Participants With Parkinson's Disease

Обзор

Study BRT-DA01-301 is a Phase 3 multicenter, randomized, sham surgery-controlled, double-blind study to assess efficacy and safety of bemdaneprocel in approximately 102 adults with Parkinson's Disease (PD).

Подробное описание

The BRT-DA01-301 study is a Phase 3, multicenter, randomized, sham surgery-controlled, double-blind study involving approximately 102 participants with Parkinson's Disease (PD). Participants will be randomized in a 2:1 ratio to either receive bemdaneprocel or undergo sham surgery. The study includes an immunosuppression regimen and placebo equivalents to maintain blinding. The primary objective is to evaluate the efficacy of bemdaneprocel on motor symptoms in participants with PD. The secondary objective is to evaluate the effects of bemdaneprocel on Motor function, Quality of life, Non-motor symptoms of PD, Disease severity, and Use of PD medications or therapies compared with participants who undergo sham surgery. Participants will be followed for at least 18 months in the double-blind period and up to five years if they receive bemdaneprocel.

Вмешательства

• Биопрепарат bemdaneprocel
  Investigational cell therapy comprising midbrain dopaminergic neuron progenitors derived from human embryonic stem cells
• Процедура Sham surgery
  Sham surgery will be performed on Day 0

Первичные конечные точки

• Change from baseline in PD diary measure of ON-time without troublesome dyskinesia, adjusted for a 16-hour waking day [Срок оценки: From baseline to Week 78]

Вторичные конечные точки (5)

• Change from baseline in PD diary measure of OFF-time, adjusted for a 16-hour waking day [Срок оценки: From baseline to Week 78]
• Change from baseline in Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part III score in the off-medication state. Part III score can range from 0 to 132, with lower scores being better. [Срок оценки: From baseline to Week 78]
• Change from baseline in Movement Disorder Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part II score. Part II score can range from 0 to 52, with lower scores being better. [Срок оценки: From baseline to Week 78]
• Change from baseline in Parkinson's Disease Questionnaire-39 (PDQ-39) summary index. Summary index score can range from 0 to 100, with lower scores being better. [Срок оценки: From baseline to Week 78]
• Incidence and severity of treatment-emergent adverse events [Срок оценки: From baseline to month 60]

Критерии участия

Критерии включения

• Diagnosis of clinically established PD as defined by the International Parkinson and Movement Disorders Society
• Individual of any sex ≥45 to ≤75 years of age at informed consent
• Robust and clear response to DA therapy as defined by MDS-UPDRS Part III
• ≥4 and <12 years from time of PD diagnosis at informed consent
• Must demonstrate responsiveness to levodopa therapy
• Receiving medical therapy for the treatment of PD symptoms
• ≥2.5 hours of daily OFF-time
• Vaccinated per current national guidelines or local practice for patients with altered immunocompetence

Критерии исключения

• PD presenting with recurrent falls
• Diagnosis of primary mitochondrial disorder, epilepsy, stroke, multiple sclerosis, or clinical features suggestive of a neurodegenerative disease other than PD, including multiple system atrophy, progressive supranuclear palsy, corticobasal degeneration, or Lewy body dementia
• Any current or relevant previous history of serious, severe, or unstable physical, neurological, or psychiatric illness that may interfere with study participation, participant's safety, or assessment of endpoints per investigator's judgment
• History of gene therapy or cell therapy
• Prior treatment with intrajejunal or subcutaneous infusion therapies for PD
• Prior surgical or radiation therapy to the brain, including deep brain stimulation (DBS) and lesion therapy, or prior history of intradural spinal cord surgery
• Contraindication to surgery, general anesthesia, cell therapy, immunosuppression, or other required drugs, or anything that prevents use of PET or MRI
• Any active infection (including but not limited to HIV, HCV, HBV, CMV, syphilis, or tuberculosis) or condition that, in the opinion of the investigator could put the participant at significant risk from immunosuppression or impact the participant's ability to perform study assessments
• Current or previously active malignant disease within the past 5 years
• Chronic immunosuppressive therapy
• Receipt of another investigational therapy within 5 half-lives of the active treatment
• Pregnancy or breastfeeding

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Рандомизированное

Модель

Параллельные группы

Маскирование

Тройное слепое

Основная цель

Лечение

Центры проведения

США · 34 центра

• Mayo Clinic Scottsdale - Neurology — Scottsdale
• Banner Sun Health Research Institute — Sun City
• University of Arkansas for Medical Sciences — Little Rock
• UCLA NeuroTranslational Research Center — Los Angeles
• UCI Medical Center - Neurology — Orange
• Stanford Neuroscience Health Center — Palo Alto
• University of Colorado Hospital - Neurology Clinic — Aurora
• MedStar Georgetown University Hospital — Washington D.C.
• … и ещё 26 центров

Австралия · 6 центров

• NeuRA (Neuroscience Research Australia) — Randwick
• Gold Coast Hospital & Health Service — Southport
• Princess Alexandra Hospital — Woolloongabba
• Monash Medical Centre — Clayton
• The Alfred Hospital — Melbourne
• The Royal Melbourne Hospital — Parkville

Канада · 3 центра

• The University of British Columbia — Vancouver
• University Health Network - Toronto Western Hospital — Toronto
• CHUM - Centre hospitalier de l'Université de Montréal — Montreal

Идентификаторы

NCT: NCT06944522 · BRT-DA01-301

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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