Active clinical trials for "Neoplasms"

This observational, multicenter, prospective study will evaluate the use of bevacizumab in real clinical practice in chinese patients with metastatic colorectal cancer.

To assess the safety profile of bevacizumab in combination with chemotherapy for the treatment of metastatic colorectal cancer

This clinical Trial is proposed to explore whether preconditioning chemotherapy of Paclitaxel+cisplatin(TP)regimen combined with autologous adoptive CIK cell immunotherapy could benefit NSCLC patients with a better clinical outcome.

In 2009, Prof. Hohenberger proposed complete mesocolic excision (CME) as standardized, in which the same principle of TME in rectal cancer has been applied to the colon. More and more surgeons pay attention to the rationality of this surgical approach. However, the clinical application researches are still few, in particular the prospective controlled study is still none. This clinical trial will compare the CME group and non-CME group to evaluate the outcome and safety of CME for apply in clinic.

Colorectal cancer (CRC) is the third most common cancer and the fourth leading cause of cancer-related death in the world. Despite potentially curative surgery and the use of modern adjuvant chemotherapy, up to 40% of CRC patients subsequently develop local tumor relapse or metastatic disease. Currently, aside from post-operative pathological staging, early follow up of the patients does not include a specific test or any other evaluation that could predict disease recurrence. Therefore, exploring and identifying novel biomarkers of CRC's following diagnosis of the primary tumor may help us in identifying patients at high risk for recurrence. Modifications in signaling pathways and their regulation by microRNAs (miRNAs) are being evaluated as biomarkers and therapeutic targets for cancer in general and CRC in particular. It has been established, although not completely, that miRNAs have a role in initiation and progression of CRC. Modifications of miRNAs have been recorded in CRC tumors, and the expression patterns of these miRNAs could in principle biomark this cancer's phenotype. As miRNAs are well documented to regulate critical molecules in signaling pathways, their regulation of tumor relevant pathways may also serve to further sub-classify patients into drug responsive groups. Moreover, miRNAs may be sampled from peripheral blood and are available as a non-invasive diagnostic method, their application as biomarkers is of special interest. In this study the investigators aim to quantify miRNA levels in human colon and rectal tumors, tumor adjacent and normal tissues. By comparing this data from a large cohort of patients, the investigators aim to identify specific, relevant miRNAs that may serve as biomarkers to stratify CRC patients according to their clinical characteristics such as disease stage, specific treatment, prognosis and disease recurrence.

Although fist-line therapy with Cisplatin and etoposide(EP)or Carboplatin and etoposide(CE)and second-line therapy with topotecan has been given, patients with ED-SCLC still relapse and 2-year survival is less than 10%. There is no standard treatment recommendation for this group of patients who failed to second-line therapy and had good performance status. Some cytotoxic drugs for the treatment of non-small cell lung cancer, i.e. vinorelbine, paclitaxel, and ifosfamide, were used in refractory or recurrent SCLC patients. Recently, a retrospective study showed the overall response rate was 30%, the median progression free survival (PFS) was 6.5 months, and the median overall survival was 10.4 months in advanced combined SCLC patients treated with first-line regimen of vinorelbine, ifosfamide and cisplatin (NIP). Because of the previous platinum administration and patient's performance status, only vinorelbine and ifosfamide (NI) are combined and used as third-line therapy for refractor or recurrent ED-SCLC in our lung cancer center. And this clinical trial is designed to prospectively investigate the efficacy and safety of NI regimen in refractory or recurrent ED-SCLC patients in our center.

Exosomes are formed by inward budding of late endosomes, producing multivesicular bodies (MVBs), and are released into the environment by fusion of the MVBs with the plasma membrane. It has been demonstrated that the content and function of exosomes depends on the originating cell and the conditions under which they are produced. Tumor exosome production, transfer and education of bone marrow cells supports tumor growth and metastasis. In this prospective translational study, preclinical and clinical phases have been designed. On the first step, the main goal is to characterize the molecular profile of gastric cancer derived exosomes. This exosome biosignature may provide a useful diagnostic tool. As a second step, the study will evaluate the prognostic and predictive value of gastric cancer exosomes levels in plasma and kinetics in a prospectively recruited cohort of advanced gastric cancer patients during first-line chemotherapy.

In this proposal the investigators aim to develop a commercial kit to be used in primary screening and non-invasive triage for early detection of gastric cancer. This kit will be cost-effective and more accessible to the general population. In addition, the investigators would like to expand our current patent already submitted to INAPI (National Institute for Intellectual Property) and propose royalties to biomedical diagnostic companies for the use of our product at international level.

The purpose of the study is to understand why there are differences between individuals in the way they respond to paclitaxel chemotherapy.

By literature review, there is a clear trend towards a potential role for human epidermal growth factor receptor 2 (HER2) as a negative prognostic factor in gastric cancer was shown, but only in half of the analyses used multivariate statistics. Besides, For the studies in the current review that have looked at the Lauren classification in relation to HER2, a higher level of overexpression or amplification was found in the intestinal phenotype compared to the diffuse or mixed types. As lauren classification was reported as an independent prognostic factor result in favored outcomes in gastric cancer (GC), there may probably be histologic bias exists when compare overall survival (OS) between HER2 statuses without controlling this confounding. Similarly, patients with different disease settings (early stage and advanced stage; resectable and metastatic) affect outcomes either. In this study, the investigators will retrospectively analyze HER2 status and lauren classification in 800 gastric patients who received gastrectomy in the Cancer Center of Sun Yat-Sen University between January 1996 and December 2006 with formalin-fixed and paraffin- embedded tumor tissue samples. To avoid potential influence by histologic classifications and disease settings, the investigators assess difference in OS between HER2 positive and HER2 negative groups in resectable Lauren classification of GCs, and further evaluate the prognostic value of HER2 status according to tumor-node-metastasis (TNM) stages.