A Clinical Trial to Investigate 18F-AzaFol in the Diagnosis of Large Vessel Vasculitis
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: AzaFol, FDG.
- Кому может быть актуально
- Состояния в реестре: Giant Cell Arteritis. Базовые параметры: от 50 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
- Швейцария
- Следующий шаг
- Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
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Официальное название
Cross-over, Randomized, Open-label, Single-centre, Phase II Clinical Trial to Investigate 18F-AzaFol in the Diagnosis of Large Vessel Vasculitis
Обзор
The goal of this open-label clinical trial is to evaluate the efficacy of AzaFol-PET/CT in the diagnosis of GCA (giant cell arteritis), to compare AzaFol- with 2-\[18F\]FDG-PET/CT, and to assess the safety and tolerability of AzaFol in subjects with suspicion of GCA. Participants will undergo AzaFol-PET/CT imaging at a single timepoint.
Подробное описание
Giant cell arteritis (GCA) is the most common systemic vasculitis in the elderly population. 2-\[18F\]Fluor-2-desoxy-D-glucose (2-\[18F\]FDG) positron emission tomography (PET)/ computed tomography (CT) is performed to diagnose GCA (standard of care, SOC) but unable to reliably distinguish atherosclerosis from vasculitis. Activated macrophages express folate receptor (FR)-β and are enriched in inflamed vascular tissue in GCA. 3'-Aza-2'-\[18F\]Fluoro-Folic Acid (AzaFol) is a nuclear tracer targeting FRβ. The investigators hypothesize that AzaFol is a specific and reliable tracer to visualize activated macrophages in GCA and therefore might improve the discrimination of vasculitic and atherosclerotic lesions as compared to 2-\[18F\]FDG-PET/CT.
Вмешательства
- Препарат AzaFol
AzaFol-PET/CT imaging - Препарат FDG
FDG-PET/CT imaging
Первичные конечные точки
- Specificity of the GCA-diagnosis at the patient level [Срок оценки: Baseline]
Вторичные конечные точки (3)
- Lesion detection rate (visual analysis) [Срок оценки: Baseline]
- Lesion detection rate (semiquantitative analysis) [Срок оценки: Baseline]
- Sensitivity of the GCA-diagnosis at the patient level [Срок оценки: Baseline]
Критерии участия
Критерии включения
- Individuals ≥ 50 years with clinical suspicion of GCA
- Women of childbearing potential must not have a positive serum pregnancy test at the Screening Visit
- Subjects must be able to understand and adhere to all protocol requirements and must voluntarily sign and date an informed consent, approved by an independent ethics committee (IEC)/institutional review board (IRB), prior to the initiation of any screening or study-specific procedures.
- Are willing and able to comply with procedures required in this protocol.
Критерии исключения
- Folate deficiency
- Female subjects who are pregnant, breastfeeding, or considering becoming pregnant during the study or within 30 days after the last dose of study drug
- Concomitant treatment with medications that lead to a significant impairment of folic acid levels (methotrexate, pemetrexed, raltitrexed)
- Concomitant glucose-containing infusion or parental nutrition within 6 hours prior to 2-\[18F\]FDG tracer application
- Glucose level > 10 mmol/l at the timepoint of 2-\[18F\]FDG PET/CT
- Unable to remain in the PET/CT for the duration of the examination
- Unable to lie still for the duration of the examination (45 min)
- Unable not to eat or drink (except water) for 6 hours prior to 2-\[18F\]FDG tracer application
- Prior PET-imaging within 60 days before baseline
- Intake of vitamin supplements containing > 1mg/day folic acid within 48 h prior to the PET/CT with AzaFol
- Known hypersensitivity or allergy to folic acid
- Enrolment of the investigator, his/her family members, employees and other dependent persons
- Participation in another study with investigational drug within the 7 days preceding and during the present study.
Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.
Здоровые добровольцы: Нет
Дизайн исследования
- Распределение
- Рандомизированное
- Модель
- Перекрёстный дизайн
- Маскирование
- Открытое
- Основная цель
- Диагностика
Центры проведения
Швейцария · 1 центр
- Department of Rheumatology and Immunology, University Hospital Bern, Inselspital — Bern
Идентификаторы
NCT: NCT06335888 · CRAFT