View clinical trials related to Neoplastic Cells, Circulating.
Filter by: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.
Lung cancer is the most common type of cancer in my country, but the 5-year survival time of lung cancer patients is only 17%. Among them, the biggest reason that affects the patient's prognosis is the metastasis of the tumor. There are very few clinical methods suitable for the treatment of metastatic lung cancer, and the curative effect is not good. Therefore, early monitoring and interventions to prevent distant colonization of metastases are the key to improving the survival of lung cancer. The preliminary research of this project found that circulating tumor cells in peripheral blood can be used as an effective means for clinical diagnosis and treatment of lung malignant tumors. Through the analysis of the difference in time and space metastasis of lung cancer patients, it is found that the genomes of different metastasis stages and metastatic organs of lung cancer are quite different , And is closely related to the patient's survival. For this reason, we propose the hypothesis that the genomic mutation characteristics of circulating tumor cells can detect tumor metastasis signals earlier than CT imaging diagnosis. To test this hypothesis, we will develop a cancer metastasis risk assessment system based on tumor genomics. First, we collect big data on the genome of primary and metastatic lung cancer from public databases, and use statistical methods to screen out genomic features that are significantly related to metastatic lung cancer and its metastatic colonization organs. Secondly, using these features to develop a set of machine learning models that can determine the risk of metastasis of a lung cancer based on its genome features. Finally, we applied the model to clinical practice. By detecting the circulating tumor cells of patients with primary lung cancer during the reexamination, we established a statistical noise reduction model to extract the genomic characteristics, and then substituted into the model to determine the circulating tumor cells carried by the patient Whether there is a risk of recurrence and metastasis. By comparing the imaging data in the review, we will verify whether the model detects early metastasis signals of lung cancer earlier than imaging methods. Ultimately, our model will aggregate genomic markers related to metastasis risk, explore their drug targeting, and provide powerful big data analysis support for early intervention in metastasis colonization and prolonging the survival of lung cancer patients. If the topic is demonstrated, it will help to clarify the use of tumor genome big data analysis to reveal the genomic driver mutations of metastatic lung cancer; demonstrate the feasibility of circulating tumor cell genome driver mutations to predict the risk of lung cancer metastasis; and finally clarify the PI3K/Akt/mTOR signal Can inhibitors of the pathway be used as a target for early intervention in lung cancer metastasis.
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.
The aim of this study is to analyze the therapeutic effect of postoperative adjuvant chemotherapy with FOLFOX4 after hepatocarcinoma resection based on folate receptor-positive circulating tumor cells. Patients receiving curative resection (R0) were randomized to postoperative FOLFOX4 group and no FOLFOX4 group. The time to recurrence, the overall survival as well as the incidence of complications after therapy was observed to confirm the role of postoperative adjuvant therapy of FOLFOX4.
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.
Multiple lines of evidence have shown that perioperative opioids requirement was associated with poor outcomes in cancer patients, including increased cancer progression and metastases and reduced survival in patients with lung, breast, prostate, and bladder cancer. Circulating tumor cells (CTCs) have been validated as prognostic biomarkers of a number of cancers. The aim of this study is to investigate the effects of perioperative opioids on the number of CTCs in patients receiving robot-assisted laparoscopic radical cystectomy. The difference of the amounts of perioperative opioids is achieved by using general anesthesia combined with intravenous opioid-based analgesia intra- and post-operatively in one group and general analgesia combined with epidural ropivacaine-based analgesia in the other group.
The purpose of this prospective, non-randomized, single-center pilot exploratory study is to investigate whether established circulating tumor cell (CTC) cultures have a similar response to targeted therapy treatment as the in vivo (patients') disease.
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.