Active clinical trials for "Gastrointestinal Neoplasms"

The aim of this study is to determine whether greater rectal cancer downstaging and regression occurs when surgery is delayed to 12 weeks after completion of radiotherapy/chemotherapy compared to 6 weeks. Hypothesis: Greater downstaging and tumour regression is observed when surgery is delayed to 12 weeks after completion of CRT compared to 6 weeks.

The purpose of this prospective, non-randomized, single-center pilot exploratory study is to investigate whether established circulating tumor cell (CTC) cultures have a similar response to targeted therapy treatment as the in vivo (patients') disease.

We have an active research program in gastrointestinal cancers including clinical trials, epidemiologic, and translational studies. We would like to establish a biospecimen bank linked to useful clinical information in order to learn more about diagnostic, predictive and prognostic markers for gastrointestinal cancers. PRIMARY OBJECTIVES: 1. To collect and store tumor and normal tissue (previously collected paraffin embedded or frozen specimen) and blood in patients with gastrointestinal (GI) cancers. SECONDARY OBJECTIVES: Collect detailed clinical information via a patient questionnaire that includes demographic, socioeconomic, lifestyle, family, past medical, medication and cancer histories Collect details about the tumor specimen extracted from patient charts.

The purpose of this study is to permit access to SU011248 for treatment use by patients with GIST given the following conditions: a) patients undergo screening, but are not eligible for participation in ongoing clinical studies such as A6181004; AND b) patients have GIST which standard treatments have not been able to control with acceptable toxicity AND c) patients have the potential to derive clinical benefit from treatment with SU011248.

In our era of personalized treatment, both the prognosis and the choice of therapy for upper GI malignancies depend on the staging before any treatment. Most experts recommend EUS (Endoscopic Ultrasound) as the first line for T-staging but the diagnostic accuracy in clinical practice varies in different centers according to the published data. Neither the discrepancy between EUS and histological findings nor the variation between centers well explained. So the investigators designed this prospective study. In the present study, the investigators performed EUS on the resected specimen after surgery before fixation in formalin, evaluated the invasion of the GI wall, and marked the deepest location with sutures. And try to determine the exact accuracy of EUS staging , find the discrepancy between EUS and histologic findings.

A multicenter Italian retrospective study on COVID-19 pandemic condition and advanced Gastro - Intestinal Cancer. Are in Italy increased the new diagnosis of GI cancer in advanced stage in the 2020 compared with 2019, as a consequence of COVID-19?

This study will assess the feasibility of sequencing locally advanced/metastatic gastrointestinal cancers in real-time to enable future treatment stratification by molecular characteristics. Targeted next generation sequencing of a panel of genes will be performed on tumour specimens and results will be discussed at a Sequencing Tumour Board to establish if a patient is potentially suitable for a targeted therapy.

The MERCURY Study demonstrated the accuracy, feasibility and reproducibility of Magnetic Resonance Imaging (MRI) to stage rectal cancer in a prospective, multidisciplinary, multi-centre study. However, there were differences in patient outcome, dependent upon the position of the tumour in the rectum and its height above the anal verge. Whilst the outcome was excellent for patients who underwent an anterior resection, the outcome, based upon margin involvement and quality of the specimen, was poor for patients who underwent an abdomino-perineal excision for low rectal cancer. It is proposed that accurate MRI staging pre-operatively will allow the correct patients to receive neo-adjuvant chemoradiotherapy (CRT), and also pre-warn the surgeons if the resection margins appear threatened so that the operation can be modified to take this into account. The primary aims of the Low Rectal Cancer Study (MERCURY II) are to assess the rate of CRM positivity rate in low rectal cancer and to assess the difference in global quality of life at two years post surgery in patients according to plane of surgery with or without sphincter preservation.

BIOMARKER ANALYSES FNA Sample: From each enrolled patient who meets the inclusion criteria, FNA sample will only be taken . FNA will be carried out only in patients with feasible biopsy or FNA site. Ascites or pleural fluid will be collected for analysis Blood Samples From each enrolled patient who meets the inclusion criteria, blood samples will be collected. 3 mL blood sample will be collected . tumor tissue Archived Tumor Tissue (Slides) Samples Primary tumor and/or a metastatic lesion collected. Approximately 5 unstained slides (if available) are collected.

The proposal seeks to establish: A comprehensive compilation (database) of clinical information comprising clinical, histopathological, treatment and follow-up characteristics of past and future gastrointestinal cancer (GIC) cases in Singapore that can be shared by investigators. The characteristics will include clinical (eg age, sex, stage), histopathological (eg. grade, type), treatment (eg. treatment status, regimens) and outcome data (eg. survival, toxicity) from medical records. A collection (bank) of corresponding frozen and fixed tissue, blood and processed samples (enriched blood mononuclear cells, protein, RNA, DNA, tissue arrays) in Singapore that can be shared by the investigators. A gastrointestinal cancer co-operative group (GCCG) of clinicians and scientists researching prognostic and predictive markers in GIC, which will benefit from the multi-disciplinary knowledge, information and samples of its members. To characterise genetic polymorphisms related to Gastrointestinal cancer chemotherapy treatment in controls (healthy volunteers)