Active clinical trials for "Esophageal Neoplasms"

This is a single arm, open-label, uni-center, phase I-II study to evaluate the safety and effectiveness of CAR-T/TCR-T cell immunotherapy in treating with different malignancies patients.

The purpose of this study is to test the the efficacy and safety of sintilimab in combination with chemoradiation before surgery for esophageal cancer.

The aim of this study was to compare raltitrexed/oxaliplatin plus radiotherapy versus radiotherapy in subjects with inoperable esophageal cancer.

Elderly patients with esophageal cancer will receive thoracic radiation therapy 54-60Gy over 30 fractions, and concurrent with Gefitinib.

This study will evaluate the efficacy of docetaxel and S-1 combination chemotherapy in Korean patients with esophageal cancer.

The purpose of this study is to identify features of the cumulative dose-volume histogram (DVH) for patients treated with trimodality therapy in oesophageal cancer and correlate these with postoperative complications.

Cancer results when undifferentiated cells grow in an uncontrolled manner, crowding out normal cells, causing morbidity and ultimately mortality. the cancer stem cell theory suggests that most tumors undergo a process of differentiation through which a relatively rare cancer stem or progenitor cell (CSC) gives rise to more differentiated populations of cells (including transiently amplifying cells) comprising the bulk of the tumor. As a result of this cellular diversity, one or more cells within the tumor are likely to be resistant to therapy. Among cells resistant to a given therapy, only CSCs can repopulate the tumor. A key feature of this resistant subset of CSCs is that they repopulate a tumor resistant to the original intervention. The cellular programs driving the uncontrolled proliferation of many solid tumors result from aberrant activity of Wnt, Shh, and/or Notch signaling pathways in esc. Thus, therapies that down-regulate the activity of these fundamental pathways in CSCs will be effective in the treatment of cancer. The investigator's research program focuses on the elucidation of signaling mechanisms, control of cellular processes and discovery of small molecules that selectively target Wnt, Shh, and Notch signaling pathways that are fundamental to CSCs. Our preliminary results identified a novel Notch associated protein NACK that functions as a transcriptional co-activator of Notch. Moreover, Nack is expressed in human solid tumors and is required for cell survival and tumor growth in notch -dependent tumor cells. The investigator's aim is to further interrogate the link between Notch and Nack. Specific Aims: Identify and isolate the cancer stem cell populations from primary chemo naive esophageal tumor samples. Interrogate the status of the Notch,( the link between Notch and Nack), Wnt and Hedghog pathways in the chemo naive esophageal tumor as well as in specific cell populations, such as the CSC. Determine the degree of cross-talk between these pathways and which of these pathways is essential for the self renewal properties and tumorigenic properties of the esc population. Identify critical targets for therapeutic intervention in CSC populations.

The purpose of this study is to down-regulate VEGF expression in esophageal cancer patients by thalidomide, so to improve their chemoradiotherapy effect. Patients with esophageal cancer receiving chemoradiotherapy were divided into different sub-group according to dynamic change of their VEGF level,and those showed increased or unchanged VEGF were added thalidomide at random. Efficacy and side effect of thalidomide combined with chemoradiotherapy were evaluated, and at the same time, activity of thalidomide on esophageal cancer and its clinical safely were assessed.

Most local failures after definitive chemoradiation for unresectable esophageal cancer occur in the gross tumor volume (GTV). And the metabolic active areas post-treatment were located in the high FDG uptake areas prior to the radiotherapy. The hypothesis is that selective dose boost to the esophageal GTV could be safely delivered using a simultaneous integrated boost (SIB) technique, and that boosting the high 18F-deoxyglucose (FDG) uptake areas of the esophageal GTV defined prior to treatment may improve local tumor control.

The best treatment for resectable esophageal or gastroesophageal adenocarcinoma is unknown. Although an operation to remove the esophagus is the most common treatment, previous studies have shown that patients live longer when either perioperative (before and after surgery) chemotherapy or preoperative (before surgery) chemotherapy plus radiation is given, compared to surgery alone. However it is unknown which of these treatments (perioperative chemotherapy or preoperative chemoradiation) is more effective in improving survival. A study where patients with resectable esophageal / GE junction cancer are chosen at random to receive one of the two preoperative treatments would help determine if one form of treatment improves survival compared to the other. Patients with localized esophageal / GE junction cancer (adenocarcinoma) will be randomized to receive either preoperative and postoperative chemotherapy or preoperative chemoradiation followed by surgery. The main objective of this pilot trial is to determine the possibility of conducting a larger study with many centers participating. If this study proves to be feasible with enough patients enrolled and able to tolerate treatments without major side effects then we can hopefully proceed to perform a larger multi-center trial to look for survival outcome differences between patients who receive preoperative chemotherapy and those who receive preoperative chemoradiation. The results of this trial would ultimately help us choose the most effective treatment of resectable esophageal cancer and hopefully improve survival.