Active clinical trials for "Neoplastic Cells, Circulating"

Background Local advanced gastric carcinoma (LAGC) is suggested to be potentially cured by R0 resection, and neoadjuvant chemotherapy can increase the R0 resection rate but not enough. Bevacizumab (Bev), an anti-tumor angiogenesis monoclonal antibody, combined with chemotherapy has been shown effective in advanced GC. In addition, CTC has been suggested as an indicator of the anti-tumor drugs' efficacy. Therefore, in this study, the investigators plan to evaluate the efficacy and safety of neoadjuvant Bev plus docetaxel/oxaliplatin/5-FU/CF (DOF) versus DOF in mainly gastric antrum LAGC, and to investigate whether CTC is an effectiveness indicator. Methods 86 patients diagnosed as IIIb-IIIc GC have been enrolled and randomly assigned (1:1) to receive neoadjuvant Bev (5 mg/kg, d1) plus DOF (docetaxel, 75 mg/m2, iv, d1; oxaliplatin, 85 mg/m2, iv, d1; 5-FU, iv infusion 600 mg/m2 and iv injection 400mg/m2, d1-2; CF, 200 mg/m2, d1 and d2) or DOF each 3-week, up to 2-4 cycles preoperation, and another 2-4 cycles postoperation up to total 6 cycles. The primary endpoint is R0 resection rate. CTC was detected every 8 weeks. All patients signed the informed consent.

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.

A prospective study was used to collect patients considering breast cancer admitted to our general surgery department from 2019-6 to 2023-8, to identify the case group (breast cancer) and the control group (non-breast cancer), to compare the differences in CTC in peripheral blood between the two groups, and to draw conclusions after statistical analysis.

The GILUPI CellCollector® is the first in vivo CTC isolation product worldwide, which is CE approved. The purpose of this clinical trial is to evaluate the predictive value of CTC in neoadjuvant chemotherapy among locally advanced breast cancer patients.

From literature review, circulating tumor cell was demonstrated its possible role in disease relapse. It was rare nit could be identified in all lung cancer patients. In addition, circulating tumor cell usual aggregate to form circulating tumor micro-emboli and caused distant metastases. Therefore, circulating tumor cell could play a role in detect disease relapse and appropriate treatment could be given more earlier and further prolong patients' survival. However, the detail clinical significance of circulating tumor still remain unknown. The aim of this study was evaluate the clinical significance, including present timing, numbers, and correlation to disease relapse, of circulating tumor cell in lung cancer patients. Investigators want to clarify the clinical significance between circulating tumor cell and clinical presentation of lung cancer in order to establish new prediction model and improve lung cancer patients' survival.

Cetuximab to reduce the amound of circulating tumor cells in early stage NSCLC

Circulating tumor cells (CTC) are the subject of increasing interest in clinical oncology as a prognostic factor and predictor of therapeutic response. The detection of CTC by immunomagnetic method has proved its reliability and its usefulness for monitoring breast cancer, colon and prostate in the metastatic and immunomagnetic detection system (CellSearch, Veridex LLC) was approved by the FDA in these indications. However, to date there is no reliable method to detect CTCs in melanoma (CMC). Studies based on PCR amplification of mRNA by reverse specific melanoma is disappointing. Recently, a new detection system of CMC immunomagnetic was presented (CellSearch, Veridex LLC, United States). This system has the advantage of combining immunomagnetic selection step and a step of identifying by immunofluorescence. A preclinical study on serial dilutions of melanoma cells has shown encouraging results. The investigators propose a prospective study of the CellSearch system in patients with melanoma. Primary objective: To determine the effect of treatment on the number of circulating melanoma cells in patients with metastatic melanoma. Secondary objectives: determine the percentage of patients with metastatic melanoma with melanoma cells circulating seek a relationship between the number of circulating melanoma cells and prognosis in patients with metastatic melanoma seek a relationship between the change in the number of circulating melanoma cells before / after treatment and tumor response in patients with metastatic melanoma

Evaluation of the use of Circulating tumour Cells to guide chemotherapy from the 3rd line of chemotherapy for metastatic breast cancer.

The purpose of this pilot study is to evaluate the addition of carvedilol with standard of care treatment to determine if it will improve progression-free survival in the front line setting in patients with glioblastoma multiforme (GBM). In addition, monitoring of circulating tumor cells (CTCs) by a real-time reverse transcriptase polymerase chain reaction (qRT-PCR) assay to correlate with the clinical findings.

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.