Recognition of Circulating Tumor DNA in Soft Tissue Sarcoma
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 45
- 试验地点
- 2
- 主要终点
- ctDNA measure
研究概览
简要总结
A tissue biopsy is currently the only clinical test or procedure that is able to confirm the initial diagnosis of soft tissue or metastatic sarcoma and evaluate its progress during treatment. However, tissue biopsy collection can be challenging (depending on the location of the tumor), and this procedure poses physical risks to the patient. A tissue biopsy also needs to be recollected at various time points in order to assess if the patient is responding to treatment.
In this project, the investigator would like to collect blood samples in addition to the sample of the tumor that will be collected before treatment is started. The investigator would like to analyze both blood and tumor, in hopes of identifying new biomarkers of sarcoma that can help the study doctors better diagnose sarcoma for patients in the future without needing to collect a piece of their tumor.
A biomarker is something found in the blood, other body fluids, or tissues that can be used to measure the progress of disease, how a treatment is working, or its likelihood of being successful. In this project, the investigator would like to compare ctDNA from blood to the DNA in the tumor. ctDNA, or circulating tumor DNA, is DNA originating from the tumor that is present in the blood. It can be assessed by taking an additional sample of blood when it will be collected for normal laboratory tests. These biomarkers may also help the study doctors detect how a patient is responding to their treatment or help predict their response to future treatment.
详细描述
In the proposed study, the investigators wish to prospectively collect blood samples from 25 patients with localized soft tissue sarcomas and 25 patients with metastatic sarcoma (schema III) at various time points outlined. The presence/absence, as well as the change of ctDNA in circulation, will then be measured after the therapies administered and correlated with overall survival, progression-free survival and local control.
The risks to the subjects enrolled on this study include the general risks of undergoing the standard procedures, such as blood draws, imaging, radiation therapy, chemotherapy and surgery, which will be discussed prior to the therapies and images each patient undergoes. The risks of the procedures are not risks of the study with exception to blood draws. There is also a risk of loss of confidentiality, but the data will be deidentified once acquired. Thus, this risk is minimal.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Other
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
- •Have signed an Institutional Review Board (IRB)/Independent Ethics Committee (IEC)-approved informed consent form (ICF) prior to any study-specific evaluation.
- •Diagnosis of soft tissue sarcoma.
- •≥ 18 years of age.
- •Planned biopsy obtained within four weeks after registration.
- •History and physical within eight weeks prior to registration.
- •For stage II-III patients, no prior therapy to primary site of sarcoma.
- •Computerized tomography (CT), positron emission tomography (PET) /CT or MR imaging of the affected primary site obtained in stage II-III or metastatic site in stage IV patients within eight weeks prior to registration.
- •CT chest or PET /CT acquired to assess distant disease within eight weeks prior to registration for stage II-III patients.
- •Karnofsky Performance Scale (KPS) 60 or above within four weeks prior to registration.
- •Documentation of stage within eight weeks prior to registration.
- •Biopsy of primary or metastatic disease site must be safe, feasible and in concordance with standard of care per the treating physician and/or radiologist.
- •Life expectancy ≥ 12 weeks.
排除标准
- •Pregnant women.
- •Patients with a history of metastatic disease from a primary other than sarcoma.
- •Patients who cannot undergo imaging as part of treatment planning or surveillance.
研究组 & 干预措施
Stage II-III Sarcomas undergoing preoperative radiation therapy (RT)
This group will have preoperative chemotherapy (if administered), preoperative radiation and surgery.
干预措施: Chemotherapy (Drug)
Stage II-III Sarcomas undergoing preoperative radiation therapy (RT)
This group will have preoperative chemotherapy (if administered), preoperative radiation and surgery.
干预措施: Preoperative RT (Device)
Stage II-III Sarcomas undergoing postoperative RT
This group will have surgery, postoperative radiation, post operative chemotherapy (if administered).
干预措施: Chemotherapy (Drug)
Stage II-III Sarcomas undergoing preoperative radiation therapy (RT)
This group will have preoperative chemotherapy (if administered), preoperative radiation and surgery.
干预措施: Surgery (Other)
Stage II-III Sarcomas undergoing postoperative RT
This group will have surgery, postoperative radiation, post operative chemotherapy (if administered).
干预措施: Postoperative RT (Device)
Stage II-III Sarcomas undergoing postoperative RT
This group will have surgery, postoperative radiation, post operative chemotherapy (if administered).
干预措施: Surgery (Other)
Stage IV Sarcomas
This group will only have chemotherapy.
干预措施: Chemotherapy (Drug)
结局指标
主要结局
ctDNA measure
时间窗: Reported at baseline, at 4 weeks after first intervention, 4 weeks following radiation treatment, 4 weeks post third intervention, 1 year.
Blood samples will be collected. ctDNA is measured in percentage: variant allele fraction percentage.
次要结局
未报告次要终点
研究者
Ciani M Ellison, MD
Assistant Professor
Medical College of Wisconsin