Active clinical trials for "Neoplastic Cells, Circulating"

The purpose of the study is to determine whether the type of anesthesia during breast cancer surgery has any impact on the way a patient's immune system functions for a brief period after surgery. If the investigators find that one type of anesthesia versus the other is more beneficial to a patient's immune system, then the investigators may use this information to design a larger study to exam the effect of anesthesia better.

The study will enroll patients with metastatic colorectal cancer receiving chemotherapy. A total of approximately 22 cc of blood will be drawn during various chemotherapy infusions. Additional proposed laboratory studies may unravel important biological insights into the relationship of circulating tumor cell genomic and genetic profiles as they compare to the primary tumors. Additionally the investigators hope to gain an understanding of potential subgroups of patients that have very high numbers of circulating tumor cells or those with early relapse of circulating tumor cells after early reduction of circulating tumor cell numbers.

The GILUPI CellCollector® is the first in vivo CTC isolation product worldwide which is CE approved. Application data of CellCollector in China is not available now. The purpose of this clinical trial is to confirm the validation and safety of CellCollector in Chinese patients.

The purpose of this study is to determine whether Aspirin could affect the number and subtype of circulating tumor cells of metastatic breast cancer and colorectal cancer.

This multicentre, prospective and randomized study aims(1:1) to compare the rate of recurrence, metastasis and survival according to the levels of intraoperative circulating tumor cells (CTCs) during cephalic duodenopancreatectomy in patients with pancreatic and periampullary tumors.

In France, the incidence of head and neck squamous cell carcinomas (HNSCC) is 16 000 new cases/year. During these last years, many new chemotherapies and targeted therapies have been developed improving significantly the overall survival of patients notably anti-HER molecules. In inoperable recurrent and/or metastatic HNSCC, the best treatment is based on an anti-Human Epidermal Growth Factor Receptor (EGFR) antibody, targeting Human Epidermal Growth Factor Receptor 1 (HER1), the Cetuximab combined with platinum +/- 5 Fluoro Uracil (5FU): " Extreme protocol ". However, no clinical or biological criteria predictive of drug efficacy have been reported yet. Thus, the development of such a predictive factor is an urgent need in HNSCC at both the clinical and pharmacy-economic level, to propose the best personalized treatment. One idea would be to enumerate and characterize the circulating tumor cells (CTC) which could give us an early evaluation of the therapeutic efficiency. In this context, the investigators have developed an innovative technology, the EPISPOT assay (patent of the University Medical Center of Montpellier), that allows the detection & characterization of viable CTC in the peripheral blood. The EPISPOT technology has been already evaluated in the breast and prostate cancer.Thus, the investigators would like for the first time to perform a prospective study on a cohort of patients treated following the Extreme protocol, with this technology, to assess the predictive value of CTC count. The investigators will use the CellSearch® system as the reference test.

This is a minimal risk correlative clinical blood-drawing protocol. The objective of this lead in pilot component is to determine whether Circulating Tumor Cells (CTC's) can be captured using the novel mesenchymal-marker based Near Infrared-Emissive Polymersomes (NIR-EPs), the PSMA-based NIR-EP, and the epithelial EpCAM-based NIR-EP. If successful, the capture method will be evaluated further in the larger comparative study.

This pilot clinical trial studies the impact of radical cystectomy (surgery) on the expulsion (release) of circulating tumor cells into the blood stream in patients with bladder cancer. Significant surgery such as radical cystectomy may cause the expulsion of tumor cells. Studying the release of tumor cells into the circulation may help doctors understand the impact that radical cystectomy has on tumor metastasis and/or tumor recurrence.

This research trial studies the levels of a type of biomarker, circulating tumor cells (CTCs), in the blood of patients with stage I-IV melanoma. A biomarker is a biological molecule found in blood, other body fluids, or tissues that is a sign of a normal or abnormal process, or of a condition or disease. A biomarker may be used to see how well the body responds to a treatment for a disease or condition. Studying samples of blood in the laboratory obtained before and after treatment from patients with melanoma may help doctors learn more about changes that occur in CTC levels and whether they may predict how well patients will respond to therapy.

Circulating tumor cells (CTCs) have the potential to provide a surrogate for'real-time biopsy' of tumor biological activity. Enumeration and molecular characterization of CTCs in liver cancer could play an important role in diagnosis, predicting the risk for tumor recurrence, and providing novel target therapy biomarkers. In view of these facts, the investigators wanted to demonstrate the value of multiparameter flow cytometry in detecting human tumor cells of liver cancer in normal peripheral blood after cryosurgery with or without dendritic cell(DC)-cytokine-induced killers(CIK) treatment, and the investigators also compared the specificity with reverse transcriptase polymerase chain reaction (RT-PCR) method.