Active clinical trials for "Stomach Neoplasms"

Familial gastric cancer accounts for 10% of all cases, but predisposing genetic variations is unknown except for CDH1 mutation. Because Germline mutation is believed to be a key aspect of cancer predisposition, we plan to recruit persons with 2 or more affected family members in three-generation pedigree. The investigators will perform a whole-exome sequencing using DNA from blood samples of families including gastric cancer patients and non-gastric cancer patients

Compelling epidemiological evidence indicates that alterations of mitochondrial DNA, including mutations and abnormal content of mitochondrial DNA (mtDNA), are associated with the initiation and development of gastric cancer.The aim of this study was to explore association between mtDNA content in peripheral blood cells could be used as a risk predictor for gastric cancer.

This study aims to evaluate the prognostic values of preoperative inflammation-based indices in patients undergoing potentially curative resection of gastric cancer.

Case series of a retrospective study of patients operated for distal adenocarcinoma of the stomach, either by total gastrectomy or distal gastrectomy at Ibn Rochd University Hospital in Casablanca, with the analysis of outcome of patients on a follow up periode of three years and eight months.

The purpose of this study is to valuation of the diagnostic ability of white light imaging and magnifying endoscopy with optical enhancement system in early gastric cancer and intraepithelial neoplasia.

To survey the grade of gastric MALT lymphoma after eradication of Helicobacter pylori

According to Seoul cancer registry data (2000), cancer became the leading cause of death in Korea, accounting for 23.9% of all deaths and gastric cancer is the most prevalent malignant neoplasm, comprising 20.8% of all cancers. Korea and some part of Asian countries have the highest incidence of gastric cancer in the world. Therefore, gastrectomy became one of the most common cancer operation in Korea. Thanks to early detection and intervention, the mortality of early gastric cancer drops dramatically and is now believed to be one of the most curable diseases among all the cancers. However, after successful operation and the declaration of cure of the stomach cancer, the patients are left without stomach for all his remaining life. If the patients lose most of his stomach tissue, there are several problems, which include loss of reservoir function for food and indigestion. Besides, loss of appetite is of the paramount importance because the stomach is an important endocrine organ controlling the appetite via gut-brain axis and the main axis is through a hormone called ghrelin, the only orexigenic hormone in human. Because ghrelin is mainly secreted by the fundus and body, operations such as laryngoscopic Roux-en-Y gastric bypass: (LRYGBP), laryngoscopic-adjustable silicone gastric banding (LASGB) virtually abolish the ghrelin expressing cells. Thus loss of appetite is an inevitable consequence. Then what happens of the plasma ghrelin after Billoth surgery (standard gastric cancer operation) which removes antrum and body of the stomach where ghrelin expressing cells are relatively less distributed? Also puzzling is the fact that after surgery some patients start to gain weight while others continue to lose weight and appetite. Are there ghrelin-expressing cell hyperplasia in the patients who start to gain weight? The gastrectomy operation which is performed at the investigators institute is Billoth I or II operation. The operation virtually eliminate the half of the body and most of the antrum. If fundus is involved also, proximal gastrectomy is the operation of the choice. Most of the patients who have these operations will lose weight during 1-3 months after surgery, thereafter slowly recover. However, the mechanism of the weight recovery has not been elucidated so far. To elucidate the mechanism of re-gaining body weight and possible ghrelin expressing cell hyperplasia, the investigators designed the prospective study to investigate the stomach tissue as well as plasma ghrelin in the patients who are going to have Billoth surgery. The items to be investigated include plasma for hormones (ghrelin, leptin, insulin, CCK, PYY), stomach tissue for ghrelin, diet evaluation and body weight (body mass index) changes for 7 months after gastrectomy. The investigators hope that their study will reveal the valuable information on the body weight recovery and appetite issue. So far the issue of the stomach cancer patients was related to survival issue. However, to lead a comfortable life the quality of life is also very important. The investigators approach will hint the way of surgery which will benefit the patients to live a happy life.

This study will explore the dynamic interaction between mental resilience, anxiety and depression in elderly patients with gastric cancer 1 year after surgery, in order to better understand the role of these two factors in patients' mental health, and provide accurate insights for clinical practice and targeted psychological support strategies.

To explore the associations among bile acid profile, bile acid-microbiota cross-talk and the development of gastric cancer, so as to better prevent the occurrence and development of gastric cancer

In gastric cancer, laparoscopic gastrectomy is commonly performed in Asian countries. In other regions where tumor incidence is relatively low and patient characteristics are different, developments in this issue have been limited. In this study, the investigators aimed to compare the early results for patients who underwent open or laparoscopic gastrectomy for gastric cancer in a center in Turkey.