View clinical trials related to Circulating Tumor Cell.
Filter by:The investigators examined circulating tumor cells (CTC) in the perioperative peripheral blood of hundreds of HCC patients undergoing liver cancer surgery using CellSearch technology between 2013 and 2016. Although the investigators have done a preliminary study of the above data and published some results, the previous study was only a basic analysis. Now the investigators plan to carry out further in-depth analysis of these data, including hospitalization data, follow-up results, surgical tumors and blood specimens, and make full use of biostatistics, molecular biology, pathology and other related techniques to elucidate the association between the levels of CTC or CTC clusters and patients' disease during the perioperative period, and to explore the molecular basis of CTC production in hepatocellular carcinoma.
This study aims to isolate CTCs in peripheral venous blood of liver cancer patients by inertial focusing principle-based microfluidic device, determine the relationship between the number of CTCs and patient prognosis and treatment response, detect mutation, copy number variation and mutation load in CTC cells and corresponding tissues using single-cell whole genome sequencing technology, and use bioinformatics analysis of CTC heterogeneity and its relationship with clinical outcome. In addition, the culture of CTCs in vitro was explored by organoid culture or sphere culture in order to obtain CTCs cell lines to reveal the metastatic mechanisms of HCC. The partner of this project is Cellomics International Limited, which could provide Cellomics CTC-100 cell sorter and related consumables for this project. Peripheral venous blood from about 300 patients with initial liver cancer will be collected, and CTCs cells will be sorted in 8ml of each patient and typed according to protein expression. Clinical data, treatment effect and survival time of patients will be collected, and finally the relationship between the number of CTCs and subgroup with treatment response and patient prognosis will be analyzed. Uncovering the genomic characteristics of CTCs of HCC provides a new basis for the precise treatment of HCC. The new diagnostic markers for Hcancer were found by miRNA expression spectrum chip and metabolomic testing.In vitro culture methods and cellular characteristics of HCC circulating tumor cells were preliminarily explored.
To investigate the prognostic and predictive value of plasma HPV (pHPV) prior, during and after induction chemotherapy (ICT) in locally advanced squamous cell carcinoma of the anus (SCCA) or synchronous metastatic SCCA patients treated with ICT prior to definitive (chemo)radiotherapy ((C)RT) according to multidisciplinary team (MDT) conferences based decisions. Further to investigate the use of pHPV measurements and other relevant markers for prediction of response and survival after ICT prior to definitive (C)RT.
The aim of the study is the early and non-invasive diagnosis of lung cancer in patients with pulmonary ground glass opacity. In particular, objective of the study is to evaluate the presence or absence of circulating tumor DNA (ctDNA) on the peripheral blood of patients with evidence of ground glass opacity(GGO) at CT scan and to evaluate the role that this can play in the diagnostic / therapeutic process. The ctDNA evaluation will be performed at the first radiological finding and subsequently correlated with the malignancy of the lesion based on the radiological / histological criteria regularly used in international protocols. Secondary objective is the correlation, in patients with malignant GGO undergoing surgical treatment, of the ctDNA presence and tumor spread through the air spaces (STAS), and its correlation with local relapses.
This study will study circulating tumor cell (CTC) release during laparoscopic radical nephrectomy (LRN) for RCC. The main objective is to determine if CTC release can be reduced during RN by using a no-touch technique, with an early renal pedicle ligation. The investigators also aim to describe the CTC profile in terms of CTC count (CTCn), epithelial/mesenchymal status, and CTC cellular features in renal cell carcinoma (RCC) patients, stratified by "primary tumor, regional nodes, metastasis" (TNM) staging, histological subtype, and other clinical and radiological features. Patients undergoing RN will enter a two-arm prospective single-center randomized controlled trial (RCT), comparing a no-touch RN technique, with direct pedicle ligation (Group A) vs. the more conventional approach of kidney traction and manipulation to reach the renal pedicle before its ligation (Group B). A microfluidic size-based CTC isolation device will be used to capture and count CTCs from peripheral blood samples of these patients. CTCs will be identified by staining with antibodies to cytokeratin 8/18, vimentin, 4',6-diamidino-2-phenylindole (DAPI), and cluster of differentiation antigen 45 (CD45). CTC release will be correlated with the disease-free survival (DFS), and overall survival (OS). The investigators will determine if CTC reducing no-touch radical nephrectomy technique improves these hard outcomes.
Head and neck squamous cell carcinoma (HNSCC) is the 4th highest incidence of cancer and 6th of cancer death of the males in Taiwan. Because the patients were mainly middle-aged male, the disease eventually resulted in a huge loss of labor force, productivity and a huge burden of family supports and medicinal costs. Unfortunately, the incidence and death of HNSCC seemed to be increasing in Taiwan. Currently, the primary treatments of HNSCC are mainly surgery, radiotherapy, chemotherapy or targeted therapy or concurrent chemoradiotherapy. Immune checkpoint inhibitors become an emerging treatment in recent days. However, how to select adequate patient by using biomarkers remains an unsolved problem. Therefore, investigator have developed a new method for isolation and detection of circulating tumor cells (CTCs) in HNSCC patients. Moreover, the expression of immune markers (such as PD-L1, PD-L2, PD-1) on CTCs or immune cells might be a good target to study. Investigator's preliminary data found CTCs and circulating cancer stem-like cells but not PD-1 expression levels on peripheral T cells in patients with recurrence or metastasis HNSCC did not associated with overall survival. Therefore, investigators are wondering if PD-L1 more specific due to it expression on cancer cells. Therefore, in the 3-year project, investigators will utilize developing device and protocol in first year and then enroll 40 freshly diagnosed participants with head and neck cancer at stage III-IV with intent to receive curative concurrent chemo-radiotherapy (CCRT), and then analyze CTCs, PD-L1 expression levels on CTCs. Blood sample will be taken before, during (definition: 3-6 weeks after start RT) and after (definition: 4 +/-2 weeks after complete CCRT) completion of CCRT. Investigators will also enroll 10 health participants and taking blood sample for 3 times and follow up. Further statistical tests with clinical conditions (disease status, treatment effects, progression or distant metastasis and death) will be performed to elucidate their clinical significance. Hopefully, investigators will clarify the correlation between clinical outcomes and expression of PD-L1 on CTCs in head and neck patients. This could be a new biomarker for clinical cancer care.
Phase II unicentric randomized trial which will include early HER2 positive breast cancer patients, candidate to neoadjuvant therapy with trastuzumab and pertuzumab. Circulating tumor cells will be collected at neoadjuvant therapy baseline. Patients with pathological complete response will be randomized in 1:1 ratio for adjuvant trastuzumab (arm A) versus trastuzumab + pertuzumab (arm B) in a two factorial design: group A, with HER2 positive CTCs and group B, with HER2 negative/absent CTCs.
This study enrolled patients who underwent R0 resection of tumor and had elevated tumor biomarkers (CEA, CA19-9). After enroll the study, a CTC test will performed and patients who had positive CTC will be randomly assigned to two groups. The control group will continue follow-up until radiological recurrence appear, the treatment group will start treatment or change the current adjuvant regimen. First endpoint is OS. The secondary endpoint is DFS, adverse event.
This study enrolling patients with metastatic colorectal cancer. Detecting CTC at different points in the treatment process. Descripting the molecular atlas of CTC in mCRC patients. Building and validating a response prediction system of mCTC patients.
Detecting circulating tumor cells from I-IV stage colorectal cancer patients pre-and post-operatively. Analyzing the morphology and biomarkers of CTCs and builting prognosis predicting model based on the morphology and biomarkers of CTCs. Verifying the prognosis model by the survival data.