Active clinical trials for "Neoplastic Cells, Circulating"

The purpose of this study is to determine if circulating tumor cells (CTC) can be accurately detected and isolated from the blood of participants with melanoma using novel laboratory techniques. Blood samples will be collected from participants with melanoma, and also from participants with other solid tumor cancers and healthy volunteers for purposes of comparison. Relevant information will be collected from participant's medical record and stored in a coded manner in a password-protected format. This information will be used to look for correlations of research results on blood samples to participant's medical condition. Test results will not be given to participants or their physicians. In some cases, CTC may be grown for long-term cell lines for further research.

Colorectal cancer represents a major public health problem in France because of its high incidence and severe prognosis. Early stages of the disease are well know and have justified the establishment of a mass screening strategy. Unfortunately, the factors determining the progression to metastatic disease about them much harder to grasp. Various prognostic factors and predictors of treatment response have been identified and are being used but most of them are In practice, they are sometimes coarse and relatively little discriminant for patients. It is now possible to directly quantify the amount of circulating tumor cells in peripheral blood. Quantification of circulating tumor cells beyond a threshold of 3 cells/7,5 ml has been established as a major prognostic factor, and the rapid decrease in the number of these cells under treatment is also a predictor of response for patients suffering from metastatic colorectal cancer . Furthermore, it has also been shown that the quality and importance of the systemic and peritumoral inflammatory response in carcinomas, including colorectal, played a key role in the prognosis of patients. In particular, the presence of high levels of blood neutrophils has been raised by many studies as being followed by a poorer prognosis. However, the correlation between the presence of circulating tumor cells and high levels of neutrophils has never been studied. There is a rational to assume that this association exists, and secondly that the presence of circulating tumor cells in a proinflammatory environment represented by a high levels of blood neutrophils promotes metastasis by exerting a negative synergistic effect on the prognosis of patients. The main objective of this pilot study is to find a correlation between the amount of circulating neutrophils and the presence of circulating tumor cells in patients with colon cancer metastatic unresectable non-pretreated. The secondary objective is to investigate whether this association results in a negative synergistic effect in terms of progression-free survival and survival to one year. This is a non-interventional study. The investigators expect the inclusion in one year of thirty patients in two centers (University Hospital Centre Antoine Lacassagne Nice) to achieve these goals.

This study evaluates the use of ctDNA and CTCs in predicting disease activity and drug response in lung cancer patients and serves to complement existing methods to achieve a non-invasive and accurate means to guide treatment decisions.

After failure on docetaxel, which has been the standard first line therapy for patients with metastatic castration-resistant prostate cancer (mCRPC), several treatment options are currently available. In retrospective studies, resistance has been described to two of the treatment options, enzalutamide and abiraterone, when a splice variant of the Androgen Receptor (AR-V7) is present on circulating tumor cells (CTCs). The investigators hypothesize that patients with AR-V7 positive CTCs do have a meaningful response to cabazitaxel.

To address the challenges of isolating and analyzing rare cells, this study aims to validate the instrumentation, the test protocols, and the analysis of patient's outcome to show the instrument's capability to reproducibly and accurately detect CTCs in cancer patients. In order to facilitate the validation process, investigators will only focus on metastatic patients for whom CTCs supposedly present at higher abundance. Investigators propose to enroll cohorts of metastatic breast cancer patients. Blood samples will be collected from these patients before they start any new line of therapy as determined by their doctors. The specific aims are to isolate, enumerate and analyze the number and/or molecular information of circulating tumor cells in patient blood using microfluidic chip-based sorting, imaging, and molecular profiling techniques. Investigators will use this study to optimize diagnostic instrumentation, test blood processing protocols and CTC analysis algorithm. During this study investigators will collect patients' clinical information related to cancer, as well as the patients' survival status to validate the system's prognosis ability.

Primary endpoint To observe the dynamic changes of CTC during the process of platinum based chemotherapy in advanced NSCLC. To study the relationship between CTC count and clinical outcome of chemotherapy (ORR and PFS). Secondary endpoint To study the relationship between CTC and overall survival. To study the molecular feature of CTC, such as epidermal growth factor receptor (EGFR), KRAS, CD117, etc.

The primary objective of the preliminary lead-in study is to determine whether circulating tumor cells in patients with metastatic progressive castration-resistant prostate cancer or metastatic progressive breast cancer can be captured using a novel mesenchymal-marker based ferrofluid (N-cadherin or O-cadherin based). The primary objective of each comparative cohort (second stage, prostate cancer) is to compare the non-detection rate of circulating tumor cells between the standard and novel methods.

The purpose of this study is to evaluate the value of dynamic change in detecting CTCs in peripheral blood from stage III rectal cancer patients undergoing neoadjuvant Folfox treatment and chemoradiotherapy,before and after surgery.

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 primary objective of this study is to determine whether circulating tumor cells (CTCs) can be used as a non-invasive means of confirming pathologic diagnosis in early-stage (Stage I) non-small cell lung cancer (NSCLC). Patients scheduled to undergo surgical intervention will have blood samples obtained to test for CTCs. Presence of CTCs will be compared to final pathologic diagnosis based on surgical specimens to assess the sensitivity of using CTCs alone to make a definitive diagnosis.