Active clinical trials for "Neoplasm Metastasis"

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.

The purpose of this study is to identify potential risk factors for and determine the rate of pathological fracture for patients which having spine metastases from breast cancer and be defined as potentially unstable (SINS 7-12) according to the Spinal Instability Neoplastic Score (SINS). The investigators' analysis will provide robust data about the development of spinal instability and help identify the optimal timing of local surgery treatment.

Breast cancer ranks as the top leading malignant tumors among females, and also accounts for the most common cause of tumor related mortality in females worldwide. Approximately, 20-30% of breast cancer cases develop metastasis, while 50% of patients will suffer from breast cancer liver metastasis. The proper indication for surgical treatment of breast cancer liver metastasis is still a matter of discussion. Surgery is becoming more practical and effective than conservative treatment in improving the outcomes of patients with breast cancer liver metastasis and liver metastasis surgery is included in an onco- surgical strategy.

According to American Heart Association criteria, patients who have had Rheumatic Fever (RF) should be treated with antibiotic prophylaxis. Continuous prophylaxis is recommended in patients with well-documented histories of RF and in those with evidence of rheumatic heart disease. There is a limited data regarding adherence of patients to treatment and efficacy of treatment. In this study, patients with RF who are older than 21 years will be collected from a computerized database of 'Maccabi Healthcare Services', one of the biggest Israeli Health Funds. Patients will be assigned to the study after obtaining informed consent. Previous adherence to antibiotic prophylaxis will be examined according to computerized database of drugs which were issued to the patient since RF diagnosis. Past history of cardiac involvement, including past Echocardiograms, will be collected from computerized database. In addition, the current cardiac state will be assessed by an experienced cardiologist, including a full new Echocardiogram examination.

PERMED01 is a prospective monocenter clinical trial which aims to evaluate the number patients with locally advanced or metastatic cancer for whom identification of molecular alterations in tumor samples can lead to the delivery of a targeted therapy. PERMED01 will enroll 460 patients in 3 years.

The investigators recently published 2 phase II trials on the use of helical tomotherapy for oligometastatic colorectal cancer [1,2]. Despite a dose increase from 40 to 50 Gy, delivered in 2 weeks time, the one-year local control was 54% only [1,2]. The high local failure rate is probably the result of geographical misses due to tumor motion and a biologically effective dose (BED) of < 100 Gy. The current study will investigate whether the one-year local control rate can be improved to 70%, using respiration correlated CT to individualize the margin needed to account for tumor motion, to avoid geographical miss, together with a Monte Carlo or collapsed cone dose calculation algorithm delivering 50 Gy to the 80% isodose, allowing higher doses in the tumor core. As the concept of an internal target volume (ITV) may result in large margins for patients displaying metastases in high mobile organs, such as liver and lung, which may lead to exposure of a relatively high dose to a large volume of normal tissue, dynamic tumor tracking by the VERO SBRT system will be applied in those patients.

For the past 50 years, gastric cancer has been one of the ten most frequent cancers and the second leading cause of cancer-related death in the world. In Taiwan, it is the fifth most common cause of cancer-related deaths, accounting for 6.3% of all cancer deaths. The poor prognosis of gastric cancer is mostly caused by the extensive metastasis to the lymph nodes, liver, and peritoneal dissemination even if curative resection was performed. The main cause of recurrence after curative or noncurative resection of advanced tumors is peritoneal metastasis because of possible direct spillage and dissemination of tumor cells as a result of surgical manipulation, and it is associated with a poor prognosis. As yet, no effective treatment has been developed for this condition. The development of peritoneal metastasis is a multistep process, beginning with attachment to peritoneal mesothelial cells, retraction of the mesothelial cells and exposure of the basement membrane, attachment to the basement membrane, degradation in the extracellular matrix, proliferation by the cancer cells, and angiogenesis, and it is clear that many types of agents are involved at the various stages of this process. Developing a new therapeutic method for this mode of metastasis is very important for improvement of gastric cancer treatment. CTGF is a secretory protein belonging to the CCN family (one among the three originally discovered members: cysteine-rich61, CTGF, and nephroblastoma-overexpressed gene). It is a multifunctional growth factor involved in wound healing, inflammation, cell adhesion, chemotaxis, apoptosis, tumor growth, and fibrosis. Recent studies showed that overexpression of CTGF in human oral squamous cell carcinoma reduces cell growth and tumorigenecity. Similar tumor growth inhibitory effects were observed in lung cancer cells in which CTGF overexpression was less angiogenic and metastatic due to blocking of the VEGF A signaling pathway. CTGF was also reported to be a key regulator of colorectal cancer invasion and metastasis, and it appears to be a better prognostic factor. These studies suggest that CTGF may involve the processes of peritoneal metastasis which includes cancer cell adhesion in peritoneum, proliferation and angiogenesis. Peritoneal mesothelium is the first surface encountered by disseminated tumor cells and successful adhesion is, therefore, of paramount importance in metastasis formation. Therefore, we hypothesized that CTGF is a potential molecule target, which may be related to cell adhesion to peritoneum, the first step of peritoneal metastasis, and its exact mechanism may includes proliferation and angiogenesis. In order to answer these important questions, first, we have performed the preliminary studies to prove CTGF did express in different gastric cancer cell lines including AGS, N87, TSGH, and MKN-45 by using RT-PCR and Western blotting, and gastric cancer tissues by using immunohistochemical method. Second, we demonstrated different levels of CTGF expression in different cell lines pose different adhesion ability in in-vitro adhesion assay. Third, we conducted a transient CTGF-overexpressed MKN45 gastric cancer cell line, and CTGF-overexpressed cell line had lower adhesive ability compared to the control. Next step in this project, we will be studying the roles of CTGF plays in cellular and molecular biology in vitro and in vivo and clinical significance associated with therapeutic potential of peritoneal metastasis from gastric cancer. We will generate stable clones of MKN45 cells harboring CTGF and its control cell line to elucidate the roles of CTGF in cancer cell adhesion, proliferation and angiogenesis in peritoneum.

Leptomeningeal metastasis (LM) is one of the disastrous events when managing advanced Non-small cell lung cancer (NSCLC) due to a grave prognosis. Although intrathecal (IT) chemotherapy and brain and/or spinal axis irradiation show some effects for LM in advanced NSCLC, the prognosis is still poor with median survival less than 12-14 weeks. Epidermal growth factor (EGFR) tyrosine kinase inhibitors (TKIs) showed to be effective for LM in selected NSCLC patients in some retrospective research. Our single-center prospective research indicated that the incidence of EGFR sensitive mutations (EGFRm+) in NSCLC-LM patients was high and EGFR-TKIs showed a survival benefit for LM in EGFRm+ NSCLC patients. A multi-center prospective observational biomarker study will be started in 11 lung cancer center based on our single-center prospective research result. The aims of the study are to find predictive biomarkers for LM in advanced NSCLC, to establish EGFR-TKIs based comprehensive treatment for appropriate EGFRm+ LM cases, and to establish effective clinical assessment criteria for NSCLC-LM EGFR-TKIs treatment.

Non small-cell lung cancer (NSCLC) accounts 85% of all lung cancer.The development of brain metastasis diminished life expectancy to less than one year with a median survival of less than three months. In NSCLC cancer, approximately 50% of patients with locally advanced disease develop brain metastasis at some time during the natural of disease. The central nervous system constitutes the first site of recurrence in 15 to 40% of these patients. Microarrays evaluate the diagnosis, treatment and prognosis of lung cancer.There are no studies that specifically evaluate the relationship between a genetic profile of NSCLC and metastasis to the CNS, with the purpose of distinguishing a subgroup of patients that will benefit of prophylactic treatment.What is the association between a genetic profile on NSCLC and the development of CNS metastasis.Obtaining a genetic profile from the primary NSCLC tumor cells, by using microarrays, we can predict the development of CNS metastasis arise a subgroup of patients that could benefit from prophylactic cranial radiation with which their quality of life and prognosis most probably will increase.Objective:Determine the association between a genetic profile from the primary tumor cells and the development of central nervous system metastasis in patients with non small-cell lung cancer.A genetic profile from the primary tumor cells are associated with the development of central nervous system metastasis in patients with NSCLC. A clinical, prospective, analytic, open, non randomized, prognostic and observational cohort with 66 patients with NSCLC who authorize a biopsy study from February, 2008 to December, 2012, INMEGEN institute will be in charge of performing the microarrays and the computer analysis in order to obtain the different genetic profiles that will be differentially expressed related with CNS metastasis risk profiles. Patients will be followed-up by means of the external consult of lung neoplasms. The statistical analysis will be performed using tests like Student's t or Mann-Whitney's U test. A multivariate analysis of logistic regression will be performed. Global survival time will be analyzed using Kaplan-Meier's technique and the comparison between groups will be performed with log-rank test. The adjustment for potential confusors will be performed using multivariate regression analysis. For result representation, we will use tables and graphs and pertinent measures will be taken to disclose the study.

The purpose of this study is to see if certain genes the tumor can help predict how the tumor will respond to Trans-Arterial Embolization (TAE). A gene is the basic physical and functional unit of heredity. Genes are made up of DNA; DNA (deoxyribonucleic acid) is the hereditary material in humans. Identifying a gene that can predict how liver tumors will respond to TAE will also help to determine if adjuvant therapy will be needed after TAE.