View clinical trials related to Circulating Tumor DNA.
Filter by:Circulating tumor DNA (ctDNA) offers the possibility of accessing the tumor genome from circulating blood through a simple blood test. It is currently used for diagnostic, prognostic and predictive purposes of response or resistance to oncological treatments. These advances in ctDNA have been made possible by major developments in molecular biology techniques in recent years, as the detection of ctDNA requires very sensitive techniques such as Next Generation Sequencing (NGS). CtDNA overcomes this problem of very limiting tumor heterogeneity during a solid biopsy. All of these applications make circulating DNA an increasingly essential tool in the management of cancer patients. The studies are currently in most cases on small numbers and are retrospective. In addition, exosomes are also a biomarker of the future that can also be detected in the bloodstream . Exosomes are nanovesicles 50 to 200 nm in diameter released into the extracellular environment via the endosomal pathway by fusion with the plasma membrane. They are very informative since they transport tumor genetic material in the form of DNA, mRNA and miRNA, but also adhesion proteins, immunostimulatory molecules and cytoskeleton, enzymes and Heats shock proteins ( HSP). The aim of the ADIGYN study is to set up a large prospective cohort to assess the diagnostic, prognostic and predictive impact of ctDNA and exosomes in digestive and gynecological / breast cancers. From the circulating DNA, we characterize the ActDNA on the molecular level thanks to the study of different point mutations usually used but also of new described mutations having a therapeutic impact and the search for other genetic alterations having an impact on the therapeutic strategy (such as microsatellite instability) or the study of exosomes and their composition. To assess resistance to oncological treatments, ctDNA will be analyzed at the start of treatment, during treatment, during progression and / or relapse and also during monitoring or treatment break
The primary purpose of this trial is to describe the profile of ctDNA methylation in gastric cancer. The second purpose is to demonstrate the correlation between the plasma ctDNA methylation status and the diagnosis and prognosis of patients with early and intermediate stage gastric cancer.
This trial is a randomized, double-blind, multinational Phase III study to evaluate the efficacy and safety of preemptive treatment with FTD/TPI compared with administration of placebo as follow-up, which is the standard of care, in patients who underwent curative resection of colorectal cancer and then tested positive for ctDNA.
The recent histo-prognostic molecular discoveries of the TCGA (The Cancer Genome Atlas) have shed new light on the classification of endometrial carcinomas. After carrying out different types of high-throughput molecular analyzes on 373 endometrial carcinomas of different histological types, 4 major tumor subtypes could be identified, each with a different survival profile (the "ultra-mutated" group with POLE mutations, the "hypermuted" group with microsatellite instability (MSI), the "low number of copies" group, and the "high number of copies" group). This histomolecular classification is not yet directly transposable to clinical practice and tumor genetic characteristics have not had any direct therapeutic impact to date. The main objective of the study is to determine the concordance rate between molecular analysis of tumor tissue and that of cDNA in patients with endometrial cancer during treatment.
The purpose of this study is to determine if a combination of two drugs ipatasertib and atezolizumab works as a treatment for residual cancer in the breast or lymph nodes and have circulating tumor DNA in the blood. This research study involves the following investigational drugs: - Sacituzumab govitecan - Atezolizumab
Locally advanced breast cancer (LABC) is defined as breast cancer (BC) larger than 5 centimeters or with lymph node metastasis. Usually, LABC is treated with neoadjuvant chemotherapy (NAC) followed by curative surgery to reduce tumor size and eliminate micrometastasis. Response to NAC helps predict BC prognosis. Pathologic complete response (pCR), defined as no residual tumor cells after NAC, represents prolonged survival without BC recurrence and residual cancer burden score, based on residual tumor volume, and can more accurately predict BC outcomes. Especially, Human epidermal growth factor receptoor type 2(HER2)-positive breast cancer, having aggressive biologic characteristics, was mostly treated by NAC because of recent advance of highly effective targeted agents (pertuzumab and trastuzumab). However, still 30-40% of HER2-positive breast cancer did not response to NAC and underwent disease recurrence. Recently, genetic studies to find biomarker of BC prognosis have been widely performed. Circulating tumor DNA (ctDNA), which is circulating free DNA in the blood that originates from cancers, can be detected by recently-developed technologies. CtDNA could facilitate early disease detection, diagnosis and detection of disease recurrence. CtDNA also provides a genomic profile of BC and predicts drug response. In BC, ctDNA correlates with tumor burden and provides early detection of treatment response and tumor genetic alterations. In this study, the investigator aimed to identify the correlations in genomic profile between tumors and ctDNA during NAC(docetaxel /carboplatin /trastuzumab and pertuzumab) in HER2 positive breast cancer.
Verify the Coincidence rate between Circulating tumor cells (CTCs) and tumor tissue or Circulating tumor DNA (ctDNA) of advanced NSCLC patients with Driver gene mutation
The purpose of this study is to determine if nivolumab added to the standard of care therapy (SOC) given after surgery is more effective than SOC alone in prolonging disease free survival in NSCLC participants with minimal residual disease detected after surgery.
The present study will investigate the feasibility and clinical value of using circulating tumor DNA as selection for anti-epidermal growth factor receptor treatment for metastatic colorectal cancer.
A open label 1:1 randomized phase II exploratory study investigating adjuvant therapy in patients with molecular biologically detectable residual disease after primary resection for localized colorectal tumors.