68Ga FAPI in Total Neoadjuvant Therapy of Rectal Cancer
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 99
- 试验地点
- 1
- 主要终点
- Change of FAPI SUV
研究概览
简要总结
The goal of the trial is to observe the changes of 68Ga FAPI signal before and after total neoadjuvant therapy for rectal cancers, and the correlation between the image parameters, immune checkpoints expression as well as the patient outcome. The trial will recruit patients with biopsy-confirmed rectal cancer aged 18 years old or older, with WHO/ECOG Performance Status 0-1, and eligible for total neoadjuvant therapy at the clinicians' discretion. After signing the informed consent, the participants will undergo a standard staging work-up if not already done, including colonoscopy and cross-sectional images such as CT, MR, and FDG-PET. Kidney function (by serum creatinine) and liver function (by serum alanine aminotransferase) will also be assessed. Only patients with stage II-III rectal cancer will be recruited.
If patients meet the inclusion and exclusion criteria, they will undergo the first 68Ga-FAPI PET within 30 days before the beginning of total neoadjuvant therapy. At 22-24 weeks into the TNT, follow-ups for response evaluation will be conducted, including colonoscopy and cross-sectional images such as CT, MR, and FDG-PET. The second 68Ga-FAPI PET will be performed within one month of these exams. Afterward, participants will either undergo surgery or have image follow-ups every 3 months. The participants will be followed up for up to 2 years after the second 68Ga-FAPI PET, and immunochemical staining with CD47, CD73, PD-L1, and FAP on the biopsy or surgical specimens will be performed in one batch to avoid batch-to-batch variation.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Biopsy proven newly detected adenocarcinoma of the rectum
- •Clinical stage II-III rectal cancer
- •Aged at least 18 years. No upper age limit.
- •WHO/ECOG Performance Status 0-1
- •Eligible for total neoadjuvant therapy
排除标准
- •Distant metastases found on either CT, MR or FDG-PET
- •Prior anticancer therapy for colorectal cancer
- •Prior radiotherapy of the pelvic region
- •Other concurrent antineoplastic therapy
- •Major surgery within the last 4 weeks prior to inclusion
- •Subjects pregnant or breast feeding
- •Serious concurrent diseases not compatible with study entry, including active, uncontrolled infections, active, disseminated coagulation disorder, clinically significant cardiovascular disease (including myocardial infarction, unstable angina, symptomatic congestive heart failure, serious uncontrolled cardiac arrhythmia within 6 months before enrolment)
- •Neurologic or psychiatric disorders including dementia, uncontrolled seizures, substance abuses, severe depression
- •Prior or concurrent malignancy within 3 years prior to enrolment (except non-melanoma skin cancer or cervical carcinoma FIGO stage 0-1)
- •Allergic to contrast agents or to the main ingredients or excipients of the experimental radiopharmaceutical 68Ga FAPI, including acetate, ascorbic acid and normal saline
- •Those deemed unsuitable for participation in the trial by the investigators.
结局指标
主要结局
Change of FAPI SUV
时间窗: before TNT & 22-24wk into TNT
To compare the FAPI uptake after TNT
次要结局
- Correlation of FAPI SUV(2 years after recruitment)