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Идёт набор NCT06972771

Trop2-targeting NIR-II Molecular Probe for Guided Identification of Non-Muscle-Invasive Bladder Cancer

— Наблюдательное Non-Muscle-Invasive Bladder Cancer

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают
В протоколе указаны: TTP-ICG incubation solution.
Кому может быть актуально
Состояния в реестре: Non-Muscle-Invasive Bladder Cancer. Базовые параметры: 18 лет — 80 лет · Все.
Что важно проверить
Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится
Китай
Следующий шаг
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Официальное название

Trop2-targeting the Second Near-Infrared Fluorescence(NIR-II ) Molecular Probe for Guided Identification of Non-Muscle-Invasive Bladder Cancer

Обзор

Bladder cancer ranks as the fourth most common malignancy among males the United States . Approximately 75% of patients present with non-muscle-invasive bladder cancer (NMIBC). For the diagnosis and treatment of NMIBC, current guidelines widely recommend white light cystoscopy (WLC) and transurethral resection of the bladder tumor (TURBT). Unfortunately, up to 70% of patients with NMIBC experience intravesical recurrence within five years of their initial treatment. The high recurrence rates necessitate long-term surveillance for most NMIBC patients, making it one of the most costly malignancies to manage. In fact, a higher risk of disease recurrence is also associated with the now widely used WLC and TURBT, which cause false-negative investigations with an inadequate resection or residual tumor, especially when urothelial tumors present as carcinoma in situ or multiple. Indocyanine green (ICG)-based the second near-infrared (NIR-II) fluorescence imaging offers real-time visualization during surgery, potentially reducing residual tumor. Herein, the investigators will introduce a novel NIR-II probe, TTP-ICG, based on a Trop2-targeting peptide (TTP) and an approach which enables differentiation between cancer and para-cancer . In brief, tissues will be soaked in TTP-ICG after resection, and their histological characterization will be determined under NIR-II fluorescence imaging. Pathological confirmation will further validate our approach. To explore the conditions for the future in vivo real-time identification of NMIBC during NIR-II fluorescence -guided surgery.

Подробное описание

After patient enrollment, surgical treatment will be administered based on clinical diagnosis and treatment. Following the surgery, excised tissues will undergo incubation with TTP-ICG following this specific procedure:

1. Preparation of the incubation solution: TTP-ICG will be dissolved in phosphate-buffered saline (PBS) at room temperature in the dark, with varying concentrations (5, 10, 20 μg/mL). 2. Incubation of the cancer and adjacent tissues: The excised tissues will be immersed and gently agitated in the incubation solution for 3, 5, or 10 minutes. Subsequently, they will be rinsed with PBST buffer (PBS with Tween 20) for 5 minutes and dried using absorbent paper. 3. Acquisition of NIR-II images: NIR-II images and fluorescent intensities will be captured using the " Digital Precision Medicine (DPM) " NIR-II system, optimized with appropriate parameters. 4. Pathological diagnosis and data analysis: Hematoxylin and eosin (H\&E) staining, along with immuno-histochemistry (IHC) , will be performed. The subsequent correlation between pathological characterization and fluorescent information will be further analyzed.

Вмешательства

  • Диагностический тест TTP-ICG incubation solution
    Clinical specimens will be incubated with TTP-ICG with different concentrations and times.

Первичные конечные точки

  • Differentiation of bladder cancer and para-cancer tissues [Срок оценки: 6 months]
Вторичные конечные точки (1)
  • Correlation between NIR-Ⅱ fluorescence and pathological diagnosis of tissues [Срок оценки: 6 months]

Критерии участия

Критерии включения

  • Adult patients between 18-80 years of age
  • Patients with suspected non-muscle-invasive bladder cancer scheduled to undergo surgical intervention.
  • Good operative candidate
  • Subject capable of giving informed consent and participating in the process of consent

Критерии исключения

  • Patients unable to participate in the consent process
  • Patients had contraindications to surgery, such as serious cardiopulmonary disease, coagulation dysfunction, etc
  • Other conditions that the researcher considers inappropriate to participate in the study

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

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения
Только случаи

Центры проведения

Китай · 1 центр
  • Yunnan Cancer Hospital — Куньмин

Идентификаторы

NCT: NCT06972771 · KYLX2024-304

Первоисточники (государственные реестры)

Открыть это исследование на ClinicalTrials.gov ↗