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Showing 1-15 of 15 trials
NCT03960021
Local percutaneous thermal ablation is frequently proposed in the management of metastatic diseases. Radiofrequency ablation (RFA) has demonstrated good results when the metastatic disease is limited and slowly evolving. The destruction of solid metastasis by RF leads to inflammatory and immunological mechanisms that remain poorly understood. These pathological events may influence the overall and anti-tumor host immune responses. The purpose of the study is to identify and quantify some immune mechanisms triggered by RFA of pulmonary metastases from colorectal cancer origin.
NCT06755762
Cancer has been a significant cause of human death in the recent two decades, although detection, diagnosis, and cancer treatments improved and evolved rapidly. Till now, the reasons why some cancer recurs and others do not remain unclear. Since 2004, circulating tumor cell (CTC) has been well-recognized that CTCs in the circulatory system are associated with cancer metastasis. The fundamental studies of CTCs hold tremendous potentials for probing the biological insights on the molecular mechanisms underlying cancer metastasis, cancer-related gene mutation, or biomarker discovery. However, the low purity (one of the natural limitations) of isolated samples often hampered CTC-directed studies' utility. For that, investigators used a well-established device (ODEP, optically-induced-dielectrophoresis) to isolate viable and high-purity CTCs for the following investigations. Investigators team developed a protocol in the past months and succeeded in cultivating CTCs (near 100%) for further drug tests and had a technology platform of organoid culture system developing in 2020. The preliminary results of the experiments showed a promising combination. That urges investigators to propose a 3-year project investigating CTC culture in the organoid system to look at (1) the behavior of CTCs in organ cell background (organoid), (2) the influences of different background cells, (3) the different in-vitro (or in-organoid) response of CTCs to specific drugs (pembrolizumab, nivolumab, cetuximab, cisplatin, 5-FU, taxanes) of head and neck squamous cell carcinoma. In the meantime, investigators will look at the genomic alterations of those CTCs growing fast and well in the organoid systems to find possible precipitating metastasis genes at a scale of cell (CTC) level. Investigators believe that the project is doable and possibly help human cancer control and understanding.
NCT06068348
The purpose of this study is to develop a liquid biopsy approach for detection of circulating tumor cells (CTC) that could be used in place of the more invasive and potentially risky methods of tissue biopsy. The aims of the project are: (a) determine whether the Chaperonin-Containing TCP-1 (CCT) chaperonin can used to identify rare cancer cells in blood, and (b) establish whether the cancer cells detected using the CCT chaperonin for identification have invasive or metastatic potential.
NCT01015625
Primary Operation in synchronous metastasized invasive breast cancer to evaluate the use of local therapy
NCT03928210
This single arm therapeutic exploratory study of digoxin in patients with advanced or metastatic breast cancer investigates whether cardiac glycosides are able to disrupt CTC clusters in breast cancer patients.
NCT06090214
The role of this transversal study is to assess the specificity and sensitivity of liquid biopsy to detect circulating cells tumor of adenocarcinoma of the ethmoid. Blood sample of participants will be collected at the moment of the surgical procedure or recurrence diagnosis; immediately after surgery; at day 8-10; at month 2-3 of postoperative follow-up. Two comparison groups will be studied: one age and gender-matched group and one professional exposure-matched group to assess the sensitivity and specificity of liquid biopsy
NCT04648189
Cetuximab to reduce the amound of circulating tumor cells in early stage NSCLC
NCT05797077
The goal of this clinical trial is to compare in resectable liver metastases colorectal cancer patients.The main question it aims to answer is to investigate whether the progression-free survival (PFS) of resectable colorectal liver metastasis (CRLM) patients with positive ctDNA after surgery is superior with the combination of adjuvant chemotherapy and maintenance therapy compared to adjuvant chemotherapy alone.
NCT03732339
The GILUPI CellCollector® is the first in vivo CTC isolation product worldwide, which is CE approved. The purpose of this clinical trial is to evaluate the predictive value of CTC in neoadjuvant chemotherapy among locally advanced breast cancer patients.
NCT03979339
This is a prospective interventional single-site research with a collection of biological samples. The primary objective of the trial is to assess the ability of the "new technology" to isolating circulating tumor cells (CTC) in selected cancer patients. Five groups will be constitued: at first the Group 0: Healthy volunteers included for the spike-in test; and then the four groups, Group1: Metastatic HER2-positive breast cancer; Group 2: Advanced CA-125 positive ovarian cancer; Group 3: Metastatic PSA-positive castrate-resistant prostate cancer; Group 4: Healthy volunteers included as control). In each group, the percentage of cases with identified circulating tumor cells will be estimated.
NCT02499458
Circulating tumor cells (CTCs) have prognostic value in several tumor types, and increasing evidence suggests that molecular characterization of CTCs can serve as a "liquid biopsy" to understand and address treatment resistance. The goal of this proposal is to demonstrate that CTCs can be accurately enumerated and characterized in metastatic clear cell renal cancer (CCRC) and can serve as prognostic/predictive biomarkers to improve treatment. The challenge surrounding CTC analysis in CCRC is that most CTC technologies (including the clinical gold-standard CellSearch®) depend in epithelial markers such as EpCAM that are expressed at low or heterogeneous levels in CCRC. Members of the research team have developed a novel CTC microfluidic technology that can effectively detect CTCs that are completely undetectable by CellSearch® because of very low EpCAM expression, as well as allowing for CTC recovery for downstream molecular characterization. The goal of this proposal is therefore to test the hypotheses that (1) The microfluidics CTC technology will have better sensitivity/specificity relative to the CellSearch in metastatic CCRC; and (2) Enumeration of CTCs in metastatic CCRC patients (n=66) will have prognostic value, while molecular characterization of CTCs for expression of biomarkers (VHL, VEGF, mTOR, HIF1/HIF2, AKT) related to CCRC etiology will be predictive of response/resistance to targeted therapies. Although CCRC is relatively uncommon, the lack of established adjuvant treatments and high cost of targeted therapies in the palliative setting makes the search for new prognostic/predictive biomarkers an important clinical goal.
NCT03797053
Several studies conducted over the past decade have shown that Circulating tumor cells (CTCs) can be used as a marker for predicting disease progression and survival in patients with early or metastatic cancer. A high number of CTCs correlate with aggressive disease, increased metastasis and decreased survival rates. Knowledge of metastasis mechanisms was mainly obtained from mouse models with CTCs after orthotopic transplants. The only possibility to study the patient's CTC subpopulations is to carry out ex-vivo expansion and develop an animal model with CTC xenograft. Because circulating blood collection is simple and non-invasive, CTCs can be used as a marker to track disease progression and survival in real time. CTCs could also guide therapeutic choice.
NCT03744962
This study aims to analyze the microsatellite instability (MSI) in the circulatory tumor DNA and in the tumor tissue in the patients diagnosed with uterine endometrial cancer. These data will be used for the study of "Cohort Study of Universal Screening for Lynch Syndrome in Chinese Patients of Endometrial Cancer" (NCT03291106, clinicaltrials.gov).
NCT02904161
To address the challenges of isolating and analyzing rare cells, this study aims to validate technical diagnostic instrumentation, tests, protocols and analysis to correlate the number of circulating tumor cells present in whole blood for predicting cancer prognosis and treatment efficacy. Investigators propose to enroll and follow cohorts of cancer patients. Blood samples will be collected from these patients at regular intervals as determined by their doctors. The patient's disease progression will be monitored over the lifetime of this study. The specific aims are to isolate, enumerate and analyze the number of circulating tumor cells (CTCs) in patient blood using chip-based sorting, filtration and imaging techniques. Investigators will also use this study to optimize diagnostic instrumentation, test protocols and downstream CTC analysis. Investigators may also correlate the results of these tests with the prognosis of the patients as well as any clinical evidence (e.g. from radiological imaging scans). While investigators focus on prognosis in this study, these correlated tests potentially may also be valuable in future studies for early diagnosis and monitoring of cancer.
NCT02345473
Very few factors may be identified as prognostic for patients with bladder cancer undergoing radical cystectomy. Recently, detection of circulating tumor cells has shown to be very promising in anticipating both the likelyhood of distant metastases and survival in patients with breast cancer, melanoma, prostate cancer and other malignancies. In the present study we both tested the detection rate of circulating tumor cells using a PCR based methodology in the peripheral blood of patients undergoing radical cystectomy, and we further correlated our results with their clinical outcome.