- ICH GCP
- Реестр клинических исследований США
- Клиническое испытание NCT07565285
The Efficacy and Safety of PRTX007-003 Combined With Pembrolizumab in Resectable Stage III Melanoma (INFLECTION-003)
A Phase 2 Study to Investigate the Activity of Neoadjuvant PRTX007 Combined With Pembrolizumab in Participants With Stage III Melanoma (INFLECTION-003)
This Phase 2, multi-center, single-arm study evaluates the safety, tolerability, and activity of neoadjuvant PRTX007 in combination with pembrolizumab in participants with resectable Stage III melanoma. Neoadjuvant immunotherapy has demonstrated improved clinical outcomes compared with adjuvant-only approaches, but there remains a need to enhance pathologic response rates without significant added toxicity.
Participants will receive oral PRTX007, a Toll-like receptor 7 (TLR7) agonist prodrug, administered in combination with intravenous pembrolizumab prior to surgical resection. The primary objective is to determine the major pathologic response (MPR) rate following neoadjuvant therapy. Secondary objectives include evaluation of safety, pathologic complete response, event-free survival, overall survival, pharmacokinetics, and immune-related biomarkers.
This study aims to determine whether the addition of PRTX007 to pembrolizumab improves antitumor immune responses and clinical outcomes in patients with Stage III melanoma.
Обзор исследования
Статус
Условия
Вмешательство/лечение
Подробное описание
This study investigates whether combining the TLR7 agonist PRTX007 with pembrolizumab enhances immune-mediated tumor response in the neoadjuvant setting for Stage III melanoma, with the goal of improving pathologic response rates and clinical outcomes while maintaining an acceptable safety profile.
Design This is a Phase 2, multi-center, open-label, single-arm study conducted in Australia. The study will enroll approximately 48 participants with resectable Stage III melanoma.
The study consists of two parts:
- Part A: 24 participants will be enrolled, including an initial dose-escalation safety run-in using a 3+3 design to evaluate tolerability and dose-limiting toxicities.
- Part B: An additional 24 participants will be enrolled if sufficient activity is observed in Part A.
Treatment Plan
Participants will receive neoadjuvant therapy consisting of:
- PRTX007: Oral administration for 3 days on and 4 days off per week for 9 cycles (7-day cycles)
- Pembrolizumab: 200 mg intravenous infusion every 3 weeks for 3 cycles Following completion of neoadjuvant therapy, participants will undergo definitive surgical resection.
Post-surgical treatment will be response-adapted:
- Participants achieving MPR may receive observation or pembrolizumab alone
- Participants without MPR will receive adjuvant PRTX007 in combination with pembrolizumab
Тип исследования
Регистрация (Оцененный)
Фаза
- Фаза 2
Контакты и местонахождение
Контакты исследования
- Имя: Gunjan Mody
- Номер телефона: +61 2 9199 9596
- Электронная почта: gunjan.mody@novotech-cro.com
Места учебы
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New South Wales
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Waratah, New South Wales, Австралия, 2298
- Рекрутинг
- Calvary Mater Newcastle
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Queensland
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Cairns, Queensland, Австралия, 4870
- Еще не набирают
- Cairns And Hinterland Hospital And Health Service
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Greenslopes, Queensland, Австралия, 4120
- Еще не набирают
- Gallipoli Medical Research
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Woolloongabba, Queensland, Австралия, 4102
- Еще не набирают
- Princess Alexandra Hospital
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Victoria
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Melbourne, Victoria, Австралия, 3000
- Еще не набирают
- Peter MacCallum Cancer Centre
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Western Australia
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Nedlands, Western Australia, Австралия, 6009
- Еще не набирают
- Sir Charles Gairdner Hospital
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Nedlands, Western Australia, Австралия, 6009
- Рекрутинг
- One Clinical Research Pty Ltd
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Критерии участия
Критерии приемлемости
Возраст, подходящий для обучения
- Взрослый
- Пожилой взрослый
Принимает здоровых добровольцев
Описание
Inclusion Criteria:
- Adults aged 18 years or older
- Histologically confirmed, resectable Stage III cutaneous melanoma.
- Candidate for curative-intent surgical resection
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
- Adequate organ function
- Able to provide written informed consent
Exclusion Criteria:
- Prior systemic therapy for melanoma, including immunotherapy
- Uveal melanoma or mucosal melanoma.
- Active autoimmune disease requiring systemic treatment
- Primary immunodeficiency or use of systemic immunosuppressive therapy
- Women who are pregnant or breastfeeding
- Recent treatment with another investigational therapy
- Any condition that, in the opinion of the investigator, would interfere with study participation or safety
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Уход
- Распределение: Н/Д
- Интервенционная модель: Одногрупповое задание
- Маскировка: Нет (открытая этикетка)
Оружие и интервенции
Группа участников / Армия |
Вмешательство/лечение |
|---|---|
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Экспериментальный: Neoadjuvant PRTX007 + Pembrolizumab (Response-Adapted Adjuvant Therapy)
Participants with resectable Stage III melanoma will receive neoadjuvant treatment with PRTX007 in combination with pembrolizumab prior to definitive surgical resection.
Following surgery, participants will receive response-adapted adjuvant therapy based on pathologic response.
Participants achieving a major pathologic response (MPR) may receive observation or pembrolizumab alone, while participants without MPR will receive adjuvant PRTX007 in combination with pembrolizumab.
|
PRTX007 is an orally administered prodrug of PRX034, a Toll-like receptor 7 (TLR7) agonist designed to activate innate and adaptive immune responses. NEOADJUVANT REGIMEN
ADJUVANT REGIMEN (IF NO MPR)
Pembrolizumab is a programmed cell death protein-1 (PD-1) blocking antibody administered by intravenous infusion NEOADJUVANT REGIMEN
ADJUVANT REGIMEN
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Что измеряет исследование?
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Major Pathologic Response (MPR) Rate
Временное ограничение: At time of surgical resection (approximately 9 weeks after initiation of treatment)
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Major pathologic response (MPR) is defined as ≤10% residual viable tumor cells in the resected tumor specimen following completion of neoadjuvant therapy, as assessed by central pathology review.
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At time of surgical resection (approximately 9 weeks after initiation of treatment)
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Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
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Incidence of Adverse Events (AEs), Serious Adverse Events (SAEs), Immune-Related AEs (irAEs), and Dose-Limiting Toxicities (DLTs)
Временное ограничение: From first dose of study treatment through end of study (approximately up to 52 weeks)
|
Number and severity of adverse events, serious adverse events, immune-related adverse events, and dose-limiting toxicities, graded according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 6.0.
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From first dose of study treatment through end of study (approximately up to 52 weeks)
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Number of participants with abnormal physical examination findings, abnormal vital signs, abnormal Eastern Cooperative Oncology Group (ECOG) performance status, and abnormal clinical laboratory parameters
Временное ограничение: Baseline through end of study (approximately up to 52 weeks)
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Baseline through end of study (approximately up to 52 weeks)
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|
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Pathologic Complete Response (pCR) Rate
Временное ограничение: At time of surgical resection (approximately 9 weeks after initiation of treatment)
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Pathologic complete response (pCR) is defined as the absence of residual viable tumor cells (0%) in the resected tumor specimen following neoadjuvant therapy, as assessed by central pathology review.
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At time of surgical resection (approximately 9 weeks after initiation of treatment)
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Event-Free Survival (EFS)
Временное ограничение: From first dose up to 1 year
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Event-free survival (EFS) is defined as the time from first dose of study treatment to any of the following events: disease progression or toxicity preventing surgery during neoadjuvant treatment; recurrence of disease after surgery; failure to achieve complete resection (R0 or R1); or death from any cause.
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From first dose up to 1 year
|
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Overall Survival (OS)
Временное ограничение: From first dose through end of study (approximately up to 52 weeks or longer if followed)
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Overall survival is defined as the time from first dose of study treatment to death from any cause.
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From first dose through end of study (approximately up to 52 weeks or longer if followed)
|
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Pharmacokinetics of PRTX007
Временное ограничение: During treatment period (multiple time points from baseline through approximately 9 weeks and selected later time points)
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Plasma concentrations of PRTX007 and its active metabolite will be measured to characterize pharmacokinetic parameters using validated analytical methods.
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During treatment period (multiple time points from baseline through approximately 9 weeks and selected later time points)
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Changes in cytokine, chemokine and soluble PD-1/PD-L1 biomarkers
Временное ограничение: Baseline through treatment period (up to approximately 9 weeks and selected later time points)
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Baseline through treatment period (up to approximately 9 weeks and selected later time points)
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Changes in mRNA expression
Временное ограничение: Baseline through treatment period (up to approximately 9 weeks and selected later time points)
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Baseline through treatment period (up to approximately 9 weeks and selected later time points)
|
|
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Changes in immune cell activation and proliferation markers
Временное ограничение: Baseline through treatment period (up to approximately 9 weeks and selected later time points)
|
Baseline through treatment period (up to approximately 9 weeks and selected later time points)
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Соавторы и исследователи
Спонсор
Даты записи исследования
Изучение основных дат
Начало исследования (Действительный)
Первичное завершение (Оцененный)
Завершение исследования (Оцененный)
Даты регистрации исследования
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Дополнительные соответствующие термины MeSH
- Новообразования по локализации
- Новообразования
- Новообразования по гистологическому типу
- Кожные заболевания
- Нейроэктодермальные опухоли
- Новообразования, зародышевые клетки и эмбриональные
- Новообразования, нервная ткань
- Нейроэндокринные опухоли
- Невусы и меланомы
- Кожные новообразования
- Заболевания кожи и соединительной ткани
- Меланома
- Пембролизумаб
Другие идентификационные номера исследования
- PRTX007-003
Планирование данных отдельных участников (IPD)
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Описание плана IPD
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
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