View clinical trials related to Liquid Biopsy.
Filter by:The study is perfomed with adult patients with non-small cell lung cancer treated with tyrosine kinase inhibitor. The objective is to collect repeated samples of blood from patients (starting) on a tyrosine kinase inhibitor, for liquid mutation testing, and pharmacokinetic analysis.
Background: Accessing brain tumor material for pathological diagnosis requires invasive procedures that carry risk to patients including brain hemorrhages and death. Liquid biopsies are emerging non-invasive alternatives to direct tumour biopsies but the abundance of circulating tumor DNA (ctDNA) is relatively low and this limits our ability to accurately make the molecular diagnosis of brain tumors. We have recently shown promising results that suggest that the analysis of blood samples can distinguish brain tumor types. We now want to couple liquid biopsies with high intensity focused ultrasound (HIFU) to enhance the release of tumor DNA into the circulation and increase the sensitivity/and specificity of liquid biopsies for brain tumors. The aim of this project is to build on our preliminary findings and investigate the the time dependent changes associated with HIFU of a tumor to see if it improves accuracy of diagnosis and specifically molecular subtyping of tumors based on peripheral blood and cerebrospinal fluid (CSF) circulating tumor derived markers following HIFU.
Routine clinical and radiological assessment of response of patients with rectum cancer to neoadjuvant chemoradiotherapy does not allow accurate identification of complete pathological response, and leads to frequent false positive and negative results. Molecular markers reflecting the initial and post-nCRT status of the tumor would be ideal to select patients eligible for organ preservation. This project will test the detection of tumor extracellular vesicles (EVs) in liquid biopsy as a reliable marker for the identification of poor versus good responders to nCRT.
Liquid biopsy is challenging for the diagnosis of epithelial ovarian cancer (EOC). In this study, we performed the methylation testing of host DNA, namely, OPCML, FODX3 and CDH13, in the peripheral serum to discover the diagnostic and supervision roles of DNA methylation in EOC patients. The study compromises two stages. In the training set, DNA methylation testing is performed in the ovarian tissues from EOC and paired benign ovarian tumor patients. The cut-off values of methylation are produced in this stage. On the meantime, serum DNA methylation testing is also performed to reveal its accordance and accuracy compared with the results of ovarian tissues. In the validation set, serum DNA methylation testing is performed in unselected ovarian tumor patients with definite cut-off values to validate its accuracy based on known histology of ovarian tumors. In training and validation sets, serum DNA methylation is also performed after major surgeries for EOC as to illustrate the changes of methylation testing, therefore, reflection the supervision role of DNA methylation.
Liquid biopsy is challenging for the diagnosis of endometrial cancer. In this study, investigators perform the methylation testing of host DNA, namely, BHLHE22, CELF4, HAND2, and ZNF177, in the peripheral serum to discover the diagnostic and supervision roles of DNA methylation in endometrial cancer. The study compromises two stages. In the training set, DNA methylation testing is performed in the endometrial tissues from patients with endometrial cancer and paired benign uterine lesions. The cut-off values of methylation are produced in this stage. On the meantime, DNA methylation testing is also performed in serum and in cervical cytology to reveal its accordance and accuracy compared with the results of endometrial tissues. In the validation set, serum DNA methylation testing is performed in unselected patients with definite endometrial histology to validate its accuracy. In training and validation sets, serum DNA methylation is also performed after major surgeries for endometrial cancer as to illustrate the changes of methylation testing, therefore, reflection the supervision role of DNA methylation.