This clinical trial collects biospecimen samples to create a personalized ctDNA test to guide treatment for patients with gastrointestinal cancer with peritoneal carcinomatosis. Deoxyribonucleic acid, or DNA, is the material that carries all the information about how a living thing will work and function. Everyone is born with the same DNA in all our cells throughout our body. Sometimes, some of the cells in the body develop abnormalities in the DNA that cause those cells to grow abnormally and uncontrollably. Cancer occurs when there is abnormal and uncontrolled growth of cells. The DNA in cancer cells is therefore different from the DNA someone is born with. The Signatera ctDNA assay is a laboratory test that takes tumor (cancer) tissue and evaluates it for unique tumor DNA. This evaluation is used to create a report (otherwise known as an assay) personalized to each person's cancer. The personalized assay creates a personalized blood test to detect the level of abnormal DNA from the cancer that may be circulating in the body. Once this personalized blood assay is designed, it may be used to monitor a person's blood for the presence of ctDNA, which will indicate the presence or absence of cancer over time, even after treatment.
This study is an exploratory analysis of the utility of ctDNA as a sensitive biomarker in patients with Peritoneal Carcinomatosis treated with chemotherapy, CRS and/or hyperthermic intraperitoneal chemotherapy (HIPEC). OBJECTIVES: I. To measure changes in circulating tumor deoxyribonucleic acid (ctDNA) in patients with peritoneal carcinomatosis (PC) from gastrointestinal (GI) cancers who are candidates for cytoreductive surgery (CRS) with or without hyperthermic intraperitoneal chemotherapy (HIPEC). II. To determine the percentage of patients on protocol with undetectable ctDNA (clearance rate) after complete CRS. III. To identify any associations between clinical staging of CRS and measurable ctDNA. IV. To assess changes in ctDNA levels in response to chemotherapy in patients with PC. V. To guide treatment based on ctDNA response. OUTLINE: Patients may receive induction chemotherapy at the discretion of the treating physician for up to 6 months. Patients undergo blood sample collection for ctDNA analysis at baseline, post chemotherapy/pre-surgery, 3-4 weeks post CRS/HIPEC, then every 3 months over 2 years. Patients also undergo tissue collection before or during surgery and their medical records are reviewed.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
30
The original tissue sample from each patient will be obtained at time of surgery or prior to surgery. Plasma for ctDNA will be obtained at baseline, pre-surgery, post-surgery and every 3 months up 2 years
Medical record reviewed
RWJBarnabas Health - Cooperman Barnabas, Livingston
Livingston, New Jersey, United States
RECRUITINGRutgers Cancer Institute of New Jersey
New Brunswick, New Jersey, United States
RECRUITINGClearance rate of circulating tumor deoxyribonucleic acid (ctDNA) with cytoreductive surgery (CRS)
Will compare results with clinical staging of CRS (surgical staging, surgical outcomes, Peritoneal Carcinoma Index \[PCI\] and cytoreduction \[CC\] score). ctDNA clearance rate defined as the % of patients on our protocol with undetectable ctDNA. Will associate ctDNA changes with clinical response by Response Evaluation Criteria in Solid Tumors and surgical staging, surgical outcomes, PCI and CC score using standard T-testing, log-rank analysis or similar non-parametric testing.
Time frame: Baseline, pre-surgery, 3- 4 weeks post-surgery and then every 3 months up to 2 years after cytoreductive surgery (CRS)
Correlation of ctDNA clearance with activity of chemotherapy
Will correlate ctDNA clearance with activity of chemotherapy in this disease pre-op and post-op
Time frame: Baseline, pre-surgery, 3-4 weekd post-surgery and then every 3 months up to 2 years after cytoreductive surgery (CRS)
Positivity rate of ctDNA in patients with peritoneal carcinomatosis
ctDNA will be obtained at baseline, pre-surgery, post-surgery and every 3 months up to 2 years
Time frame: Baseline, pre-surgery, 3-4 weeks post-surgery and then every 3 months up to 2 years after cytoreductive surgery (CRS)
ctDNA and its association with results of next generation sequence (NSG) analysis from original tumor tissue.
ctDNA will be obtained at baseline, pre-surgery, 3-4 weeks post-surgery and then every 3 months up to 2 years. ctDNA from blood samples will be compared with the results of NSG analysis from original tumor tissue
Time frame: Baseline, pre-surgery, 3-4 weeks post-surgery and then every 3 months up to 2 years after cytoreductive surgery (CRS)
Associations between CEA levels and ctDNA levels
ctDNA will be obtained at baseline, pre-surgery, post-surgery and every 3 months up to 2 years
Time frame: Baseline, pre-surgery, 3-4 weeks post-surgery and every 3 months up to 2 years after cytoreductive surgery (CRS)
Associations between CA19.9 levels and ctDNA levels
ctDNA will be obtained at baseline, pre-surgery, post-surgery and every 3 months up to 2 years
Time frame: Baseline, pre-surgery, 3-4 weeks post-surgery and every 3 months up to 2 years after cytoreductive surgery (CRS)
Associations between CA125 levels and ctDNA levels
ctDNA will be obtained at baseline, pre-surgery, post-surgery and every 3 months up to 2 years
Time frame: Baseline, pre-surgery, 3-4 weeks post-surgery and every 3 months up to 2 years after cytoreductive surgery (CRS)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.