Active clinical trials for "Neoplastic Cells, Circulating"

The phenotype of circulating tumor cells (CTCs) is supposed to be significant indicator that is correlated the prognosis of breast cancer patients who have completed neoadjuvant chemotherapy, primary tumor surgery with/without adjuvant chemotherapy. The aim of this observational study is to assess the efficacy of CTCs surveillance in predicting the prognosis of breast cancer patients.

A variety of in vivo experimental models have been established for the studies of human cancer using both cancer cell lines and patient-derived xenografts (PDXs). In order to meet the aspiration of precision medicine, the in vivo murine models have been widely adopted. However, common constraints such as high cost, long duration of experiments, and low engraftment efficiency remained to be resolved. The chick embryo chorioallantoic membrane (CAM) is an alternative model to overcome some of these limitations. The chick CAM is shown to be a robust model for both the inoculation of cell lines and grafting of patient tumors for drug therapy evaluations and target genes/pathways analysis. The start-up INOVOTION has developed a unique, highly sensitive and reproducible CAM assay to graft human cancer cells/tumors in the chicken egg environment. INOVOTION's technology was validated for over 55 human tumor cell lines, including carcinomas, gliomas and melanomas, as well as over 30 reference drugs currently on the market. At INOVOTION, the graft of human cancer cells on the chicken CAM is currently conducted manually. To scale-up, the process was recently automated. The automation performance was assessed on cancer cells lines. The objective of this study is to demonstrate that the automation of the INOVOTION process enables tumors' proliferation using patient samples (from tumor samples or circulating tumor cells) as grafting material.

The primary objective of this study is to establish circulating tumor cell (CTC) derived xenografts and assess the activity of novel DNA repair inhibitors as a function of DNA repair mutations detected in CTC samples (personalize DNA repair therapy).

This study enrolled patients who underwent R0 resection of tumor and had elevated tumor biomarkers (CEA, CA19-9). After enroll the study, a CTC test will performed and patients who had positive CTC will be randomly assigned to two groups. The control group will continue follow-up until radiological recurrence appear, the treatment group will start treatment or change the current adjuvant regimen. First endpoint is OS. The secondary endpoint is DFS, adverse event.

The goal of this study is to establish the value of Circulating Tumour Cell (CTC) positivity in predicting post-RP treatment failure, including BCR and new lesions detected by cancer imaging. We plan to recruit participants who will undergo Radical Prostatectomy (RP). Participants will have their blood samples taken just before surgery and 3 months after the surgery to test for CTCs. Then participants will be followed-up for cancer progression information at 3 month intervals for the first year then yearly intervals after that. Their PSA will be observed over time.

Create a living biobank of PDOs from Stage I-III lung cancer patients.

In resectable gastric cancer participants who received curative surgery, to early and more accurately detect peritoneal carcinomatosis or occult metastasis is important. Also, investigators will look at CTC numbers in different timings after operation, to investigate the possibility of early detection for peritoneal carcinomatosis or occult metastasis. Also, this study will correlate the relationship of CTC and participants' survival.

Head and neck cancers (HNSCC) are primarily squamous cell cancers represented by tumors of the upper aerodigestive tract. Locally advanced stages (stages III and IV) account for 50 to 70% of all presentations. The three main risk factors are smoking, alcohol and oropharyngeal infection with human papilloma virus (HPV). Apart from HPV status, there is no biomarker for the prognosis in HSNCC patients. Circulating Tumor Cells (CTCs) can provide "real-time" information on tumor behavior and are already used in various cancers (colon, lung). Their detection has limited sensitivity and biomarkers cannot be used for early diagnosis, but may be useful during follow-up to assess local, regional or metastatic early tumor recurrence. By using blood samples at different times (at diagnosis, after initial treatment and during follow-up), we will be able to measure the variation in quantification and establish a predictive role of these CTCs for the response to treatment. Our hypothesis is that CTCs may have a key role, in addition to clinical and radiological examination, in detecting early tumor relapse. We believe that the joint consideration of clinical parameters, treatment strategy and quantification of CTCs could optimize patient follow-up and management. The CTC extraction system, ClearCell® FX from Biolidics, is an automated microfluidic enrichment system. It has the advantage of recovering fully intact and viable CTCs from a standard blood sample. The gentle sorting principle allows to preserve cell integrity and thus the expression of surface antigens. The CTCs thus isolated can then be re-cultured or analyzed by immunostaining. This high-performance technique, in operation since December 2017 in the Biochemistry Department of Pr Claire Rodriguez-Lafrasse (HCL), has demonstrated its usefulness in lung cancer. Transcriptomic analysis of CTCs can be performed at the scale of a cell after isolation of the CTCs. CTCs can then be sequenced in RNAseq either in bulk (pool of cells) or cell by cell on our Illumina (Nextseq) sequencer, in order to define the heterogeneity of the tumor. Transcriptome analysis then provides information on the state of the cell as to its position in the epithelio-mesenchymal transition thanks to a molecular signature by phenotype. A priori-free characterization is therefore possible thanks to the RNAseq single-cell. This highly sensitive and innovative technique will allow the study of the gene expression profile of CTCs.

Hepatocellular carcinoma (HCC) recurs in up to 60% of patients who undergo resection. Circulating tumor cells (CTC) have been advocated as promotors of the recurrence. However, their role as prognostic markers in the surgical setting is unclear. The aim of the present study has been to assess the association between CTC from peripheral blood samples and the risk of recurrence after surgery. Patients with a first diagnosis of HCC, no previous treatment for this condition, no other oncological history, and BCLC stage 0-A-B will be enrolled in 2 centers. Patients will undergo to serial liquid biopsies (i.e., a 15ml peripheral blood sample on each time point) at day 0-30-90-180-365 after surgery. After isolation of peripheral blood mononucleate cells, CTC will be detected by FACSymphony™ and subsequently the following markers will be identified: EpCAM, N-cadherin (N-cad) and CD90. Epithelial-mesenchymal transition (EMT) will be analyzed by an index estimated as the ratio between the number of EpCAM+/N-cad- and EpCAM+/N-cad+ cells (EMT Index). Patients will be divided according to the recurrence status.

The aim of the study is the early and non-invasive diagnosis of lung cancer in patients with pulmonary ground glass opacity. In particular, objective of the study is to evaluate the presence or absence of circulating tumor DNA (ctDNA) on the peripheral blood of patients with evidence of ground glass opacity(GGO) at CT scan and to evaluate the role that this can play in the diagnostic / therapeutic process. The ctDNA evaluation will be performed at the first radiological finding and subsequently correlated with the malignancy of the lesion based on the radiological / histological criteria regularly used in international protocols. Secondary objective is the correlation, in patients with malignant GGO undergoing surgical treatment, of the ctDNA presence and tumor spread through the air spaces (STAS), and its correlation with local relapses.