177Lu-FAP-2286 Treatment in Urethelial Neoplasms: Utility and Safety as a Novel Treatment.
试验速览
- 阶段
- 2 期
- 状态
- 尚未招募
- 入组人数
- 10
- 主要终点
- Efficacy of Lu-177-FAP-2286
研究概览
简要总结
Ga-68-FAPI has recently been proven to be superior to F-18-FDG in various cancers. These results have also raised hope in using FAP radiopharmaceuticals with theranostic approach. Lu-177 bound FAPI molecules have been started to be used in some cancers in clinical trials following its efficacy proven by case reports. Similarly,as a pilot study, this project aims to investigate safety and efficacy of Lu-177- FAP-2286 in metastatic urothelial carcinomas of bladder.
A total of 10 histopathologically proven urothelial bladder cancer patients >18y of age will be included in the study. After taking informed consent, all patients will undergo both 18F-FDG PET/CT and 68Ga-FAPI PET/CT for restaging before initiation of Lu-177-FAP-2286. Patients who show progression despite advanced therapies and high Ga-68 FAPI uptake will be enrolled. Patients with histopathologically proven advanced stage urothelial bladder cancer refractory to all standard therapies and no standard treatments are available or are contraindicated. Radiopharmaceutical will be administered 150mCi fixed dose, 3 cycles, 8 weeks interval. Posttherapy whole body SPECT/CT imaging will be obtained 4.,24.,96,120Hours of treatment for dosimetric calculations. All patients will be monitored for safety issues and possible long term side effects. Hematological tests, renal and liver function tests will be performed every 2 weeks, radiological imaging for tumor response assessment will be performed every 6 weeks. Symptoms will be taken under consideration for symptomatic response QoL questioner. In case of objective progression, therapy will be stopped. Otherwise, will be completed to 4 cycles.
Administration of Lu-177 FAPİ treatment will be performed by 1st partner from Turkey. Posttreatment SPECT/CT images will be obtained and collected for dosimetric calculations. Heatly organ doses and tumor doses will be calculated bt 2nd partner form Italy in collaboration with 1st partner. In consideration of the advances in radionuclide treatments to achieve objective response within safety margins to healthy organs, dosimetric approaches are mandatory. As a novel treatment dosimetric data for Lu-177 FAPİ treatment is limited. Despite to being a reference center for radionuclide treatments 1st partner has no experience on dosimetric calculations for systemic radionuclide treatments. As an experienced center for dosimetric studies, 2nd partner will be a milestone for analysis of dose response and toxicity analyses for this pilot study of novel treatment.
详细描述
Bladder cancer has a variable incidence worldwide, changing with environmental factors. Urothelial carcinoma the the most common histopathological subtype. Early-stage bladder cancer has a favoruable prognosis, despite high survival rates (5years survival rate 40-70%). Advanced stage, however, has a very poor prognosis, with high metastatic rate. In these patients, several agents have been tried to improve outcomes. Radionuclide therapies gained importance in multiple cancer types, including prostate carcinoma, with recent reports proving its efficacy in especially metastatic, inoperable, advanced stage disease (1-4). In advanced stage bladder cancer, the role of radionuclide treatments has not been investigated yet. But in case a metabolic pathway can be viualised by a diagnostic radiopharmaceutical, then radiolabeled lesions can also be cured by the theranostic pair. Although F-18-FDG is a very good agent for detecting metastatic disease in bladder cancer, it cannot be used for theranostic purposes. Other routes are thus investigated for this aim.
Fibroblast activation protein (FAP) is highly expressed in the stroma of several tumor entities. Especially breast, colon, and pancreatic carcinomas are characterized by a strong desmoplastic reaction, which means that 90% of the gross tumor mass can consist of stromal but not tumor cells. Fibroblasts are present ubiquitously in the whole body and show very low or no FAP expression. In contrast, cancer-associated fibroblasts are specifically characterized by the expression of FAP (5).
Thus, cancer-associated fibroblasts differ from normal fibroblasts by providing FAP as a target with a relatively high tumor-specific expression, and FAP inhibitors (FAPIs) have already been developed as cancer drugs (6,7). Based on a quinoline-based FAP-specific inhibitor (6), a new class of radiopharmaceuticals was designed and found preclinically highly promising as molecular targeting imaging probes, and it is hoped that they also will be therapeutically useful (8,9).
First-in-human cases demonstrated high-contrast tumor imaging in various cancers, including bladder cancer (8-11). Thus, it has also been recognized as a promising target for therapy. To date, there are no studies available investigating FAPI targeted radionuclide therapy in bladder cancer.
The major aim of this study is investigating the safety and efficacy of Lu-177 FAP-2286 in advanced stage urothelial bladder cancer. The study is planned as a pilot study in a relatively small group of patients.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
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
- •Patients with histopathologically proven advanced stage urothelial bladder cancer refractory to all standard therapies and no standard treatments are available or are contraindicated.
- •Patients aged >18y, male or female gender
- •Patients who are willing to cooperate with the study protocol, including the therapy regimen, posttherapy imaging and follow up visits
- •Patients who read and signed the written informed consent form.
- •A positive Ga-68-FAPI scan result (at least 50% of the lesions with an SUVmax >1.5 times liver SUVmax )
- •Blood tests (Platelets>120.000/mm3, Neutrophils>1500cell/mm3, Hb>8g/dL
- •Liver function tests: (ALT and AST<2.5Xupper limit of normal, Bilirubin<2mg/dL, Total bilirubin<1.5X upper limit of normal
- •PT, aPTT and INR in normal range
- •Normal GFR, serum Cr levels
- •Life expectancy longer than 6 months
排除标准
- •Low Ga-68-FAPI uptake
- •Not willing to sign informed consent form
- •Hematological tests and renal function tests are not eligible
- •Disseminated bone marrow metastasis
- •Central nervous system metastasis or existence of any lesion with risk of compression
- •Co-existing secondary malignancies
- •Previous radioligand therapies
- •Being received anticancer therapies in 4 weeks
研究组 & 干预措施
Treatment arm
Patients with metastatic bladder cancer who will received Lu-177 FAPI treatment
干预措施: Radionuclide treatment with Lu-177 FAPI (Other)
结局指标
主要结局
Efficacy of Lu-177-FAP-2286
时间窗: 1 to 30 months
Efficacy of Lu-177-FAP-2286 based on objective response rate according to RECIST.
Dosimetry of Lu-177-Fap-2286
时间窗: 6 to 30 months
Radiation dosimetry of Lu-177-FAP-2286 to tumoral lesions and healthy organs measured by absorbed dose estimates (Gy)
Safety of Lu-177-FAP-2286
时间窗: 6 to 36 months
Determination of short and long term adverse events
次要结局
未报告次要终点
研究者
Cigdem Soydal
Prof of Nuclear Medicine
Ankara University