View clinical trials related to Neoplastic Cells, Circulating.
Filter by:Through the screening of CTCs in patients with suspected liver cancer and liver tumor resection or liver transplantation, the number of CTCs in the blood of liver cancer patients before and after surgery is monitored, and the clinical application significance of CTCs in liver cancer screening and postoperative recurrence monitoring in liver cancer patients is evaluated.
The aim of this work is to evaluate the impact of endoscopic procedures on the circulating tumoral cells level in order to evaluate the potential effects of an endoscopic procedure in the management of pancreatic tumors.
This study investigates the ability of heat shock protein HSP70 to isolate and quantify circulating tumor cells (CTCs) in patients with advanced or metastatic tumors. CTCs will be isolated from peripheral blood before antineoplastic treatment and again after three months. Isolation using HSP70 will be compared with standard CTC isolation by EpCAM. Additionally, imaging parameters of the primary tumor (if available) and metastases will be analysed and correlations between molecular alterations and imaging parameters will be assesed.
More than 80% of patients with cancer will be exposed to anaesthesia at some point in their treatment. There is increasing evidence that perioperative events, including the type of anaesthesia drugs utilised, have an impact on cancer recurrence and metastases. Although potentially and theoretically curative, surgical resection, manipulation and trauma may disseminate tumour cells and reduce immunity. There have been a number of suggestions as to why cancer may be, paradoxically, worsened by surgery and what methods may be used to mitigate this. One of these is propofol based total intravenous anaesthesia (TIVA), whereby the traditional inhalational anaesthetic drugs are avoided. Commonly used inhalational drugs, such as sevoflurane and desflurane, are pro-inflammatory. Propofol, however, has anti-inflammatory and anti-oxidative properties, induces apoptosis and has specific inhibitory effects on tumour cell growth in vitro. Laboratory investigations, animal models, retrospective clinical studies and initial clinical research are producing evidence that inhalational anaesthesia facilitates tumour recurrence and metastasis, whilst TIVA can prolong survival. This randomised, controlled trial will look at the effects on DNA damage and biomarkers of immunity and inflammation of inhalational anaesthesia versus TIVA in patients undergoing surgery for hepatocellular carcinoma, a common tumour in the Southern Chinese population, for whom surgery is potentially-curative. It will focus on subjects undergoing open and laparoscopic hepatectomy and investigate changes in biomarkers of inflammation, immunity and gene expression from the patients' blood samples taken before, during and after surgery. Patients will also be followed-up for cancer recurrence, morbidity and five-year mortality. Results could represent a breakthrough in knowledge of how anaesthetic agents impact the results of cancer surgery, and have important implications for a more disease- sensitive approach to improving management and outcomes in these patients.
The prospective observational clinical study will recruit 50 metastatic nasopharyngeal carcinoma (mNPC) patients, detecting patient's chemosensitivity with the circulating tumor cells (CTCs) from peripheral blood and prdicting patient's treatment efficacy with CTCs dynamic change.
This observational study with circulating tumor cells (CTC) count, isolation and analysis at several time points during disease progression is to investigate the role and biology of CTCs and clusters of CTCs in different cancer types. It also evaluates the role of CTCs as biomarkers, and aims at the identification of key signaling networks that are active in CTCs.
Background: Retrospective studies and meta-analyses have shown a reduction in 5-year survival following inhalational based compared to propofol based total intravenous (TIVA) anaesthesia for cancer surgery. To date there have been no prospective trials published which evaluate the effect of anaesthetic technique on circulating tumour cells (CTC), oxidative stress, and recurrence rate following cancer surgery. Children with cancer often require surgery for tumour excision as well as for other diagnostic and therapeutic procedures. To date there has been no prospective randomized controlled trial evaluating the optimal anaesthetic technique for surgery on children with cancer. Aim: This is a pilot study in paediatric patients who require surgery for tumour excision. The aim is to investigate the effect of sevoflurane inhalational versus propofol intravenous anaesthesia on expression of hypoxia-inducible factor 1 (HIF-1), circulating tumour cells, DNA damage and biomarkers of immunity and inflammation in patients before and after tumour surgery. The patients will be followed up for up to 5 years for tumour recurrence after surgery. Method: This will be a single-blinded randomized controlled trial. One hundred children undergoing tumour excision surgery at the Hong Kong Children's Hospital will be recruited and randomized to receive TIVA or inhalational anaesthesia. Baseline, intraoperative and postoperative blood will be taken for tests of immunity and inflammatory markers, DNA damage and circulating tumour cells. Patients would be followed up to 3 years for tumour recurrence and survival.
This culture system utilizes the special affinity difference of biomedical material coating for different cells to achieve the effect of isolating tumor cells from the blood sample. The coating of the system has the characteristic that to make the WBCs adhesion, but the cancer cells in the blood sample suspend in the culture medium, which achieves the effect of separating cancer cells from the blood. The supernatant with the cancer cells can further be isolated from the cultural system for related analysis and detection to achieve early diagnosis and screening.
The incidence of breast cancer in Chinese women has increased year by year, and luminal A breast cancer commonly occurs in early-stage and postmenopausal women. This type of breast cancer is not sensitive to chemotherapy, although it has a low mortality rate and distant metastasis rate. Studies have shown that luminal A breast cancer is sensitive to endocrine therapy. Patients with breast cancer who undergo excision should be followed up and their prognosis should be monitored regularly. At present, imaging detection is mainly used in the conventional follow-up of breast cancer, but the cost of many imaging examinations is high, so a cost-effective examination is urgently needed. Recent studies have found that circulating tumor cells can be used as a new type of tumor molecular marker, which can be used to diagnose tumors, judge the prognosis and monitor the efficacy by detecting the number and characteristic protein expression of circulating tumor cells. Because circulating tumor cells may develop abnormalities 4-6 months earlier than conventional imaging examination, as long as circulating tumor cells of patients are abnormal, timely PET-CT examination will neither miss diagnosis nor delay the condition. Simultaneously, the cost of hospitalization can be obviously reduced. This non-inferiority randomized controlled clinical trial is designed to compare the differences in postoperative conditions between circulating tumor cell detection and conventional imaging examination in patients with luminal A breast cancer without lymph node metastasis.
The role of circulating tumor cells (CTC) in patients suffering from lung cancer and thoracic malignancies is not well known and it is still widely debated. The use of intraoperative cardiorespiratory supports like ECMO (extracorporeal membrane oxygenator) and CPB (cardiopulmonary by-pass) during extended resections in oncologic patients has been questioned because of the theoretical risk of tumor cells spreading, although there is no clinical or experimental evidence supporting this hypothesis. The aim of the present study is to quantify the possible presence and amount of CTC in the peripheral blood of patients undergoing lung/mediastinal resection, before and after surgical procedure, comparing patients receiving intraoperative cardiorespiratory support with patients - with similar oncologic disease and extension - operated without the need of ECMO or CPB.