View clinical trials related to Circulating Tumor Cells.
Filter by:To investigate the effects of perioperative anesthetic drugs propofol and desflurane on circulating tumor nucleic acids (CK7, ELF3, EGFR and EphB4 mRNA) in the blood of patients with liver cancer, so as to provide scientific reference for clinical anesthesia in the perioperative treatment of tumor
This study compares the biological activity of cabazitaxel (6 cycles) to that of docetaxel (6 cycles) in metastatic castrate-resistant prostate cancer (mCRPC) patients with docetaxel resistant mCRPC defined as ≥5 circulating tumor cells (CTCs) / 7.5 mL after 2 cycles of docetaxel. Patients with docetaxel resistant metastatic castration-resistant prostate cancer (mCRPC) based on circulating tumor cell (CTC) enumeration (patients with ≥5 CTCs / 7.5 mL before docetaxel chemotherapy and after 2 cycles of docetaxel) will receive either 6 additional cycles of docetaxel or 6 additional cycles of cabazitaxel after randomisation. A cohort of patients with docetaxel sensitive metastatic castration-resistant prostate cancer (mCRPC) based on circulating tumor cell (CTC) enumeration (patients ≥5 CTCs / 7.5 mL before docetaxel chemotherapy and <5 CTCs / 7.5 mL after 2 cycles of docetaxel) will receive 6 additional cycles of docetaxel.
The primary purpose of this study is to compare both short-term and long-term treatment effect of laparoscopic vs. open approach on progressive gastric and rectal cancer, based on circulating tumor cell (CTC) test results as well as disease-free survivals, and figure out principles of laparoscopic approach for progressive gastric and rectal cancer. Secondary purpose is to establish an evaluation system for laparoscopic surgery for progressive gastric and rectal cancer treatment using CTC as a biomarker.
The investigators have developed an assay that can sensitively and specifically detect DNA mutations circulating in human plasma that may be indicators of the presence of a solid tumor. This study is a pilot study to measure positive and negative predictive values of this assay as an indicator of the presence of a tumor in normal subjects
The purpose of this study is to investigate the feasibility of using novel decellularized tissue matrices to isolate and culture circulating tumor cells (CTCs) collected from patients with metastatic solid tumor malignancies.
Circulating tumor cells (CTCs) have prognostic value in several tumor types, and increasing evidence suggests that molecular characterization of CTCs can serve as a "liquid biopsy" to understand and address treatment resistance. The goal of this proposal is to demonstrate that CTCs can be accurately enumerated and characterized in metastatic clear cell renal cancer (CCRC) and can serve as prognostic/predictive biomarkers to improve treatment. The challenge surrounding CTC analysis in CCRC is that most CTC technologies (including the clinical gold-standard CellSearch®) depend in epithelial markers such as EpCAM that are expressed at low or heterogeneous levels in CCRC. Members of the research team have developed a novel CTC microfluidic technology that can effectively detect CTCs that are completely undetectable by CellSearch® because of very low EpCAM expression, as well as allowing for CTC recovery for downstream molecular characterization. The goal of this proposal is therefore to test the hypotheses that (1) The microfluidics CTC technology will have better sensitivity/specificity relative to the CellSearch in metastatic CCRC; and (2) Enumeration of CTCs in metastatic CCRC patients (n=66) will have prognostic value, while molecular characterization of CTCs for expression of biomarkers (VHL, VEGF, mTOR, HIF1/HIF2, AKT) related to CCRC etiology will be predictive of response/resistance to targeted therapies. Although CCRC is relatively uncommon, the lack of established adjuvant treatments and high cost of targeted therapies in the palliative setting makes the search for new prognostic/predictive biomarkers an important clinical goal.
The purpose of this study is to investigate the level of Circulating Tumor Cells (CTCs) in cancer patients before and after undergoing treatment regimens where the primary treatment modality is radiation therapy (XRT). Specifically, there is interest in the change in CTCs pre- and post- XRT, both in absolute and relative terms.
Very few factors may be identified as prognostic for patients with bladder cancer undergoing radical cystectomy. Recently, detection of circulating tumor cells has shown to be very promising in anticipating both the likelyhood of distant metastases and survival in patients with breast cancer, melanoma, prostate cancer and other malignancies. In the present study we both tested the detection rate of circulating tumor cells using a PCR based methodology in the peripheral blood of patients undergoing radical cystectomy, and we further correlated our results with their clinical outcome.
Proportion of circulating tumor cells (CTC) in the postoperative phase after curative tumor removal of pancreatic cancer will be determined and correlated to the accordance of anesthesia (desflurane versus propofol)
This is a randomized phase II trial for patients with HER2 negative primary Breast Cancer (BC) who after completing (neo) adjuvant chemotherapy and surgery have detectable circulating tumour cells (CTC) in peripheral blood. Eligible patients will be randomised in 1:1 ratio to either the trastuzumab arm or the observation arm.