Active clinical trials for "Gastrointestinal Stromal Tumors"

The purpose of this study is to determine whether nivolumab plus ipilimumab are effective and safe in the treatment of sarcoma and endometrial carcinoma patients with somatic deficient MMR as a selection tool.

Data are currently insufficient to guide the management of very small gastrointestinal stromal tumors（GISTs）（< 2 cm) discovered incidentally on endoscopy,this study is designed to collect the medical records of patients in different treatment group with long-term follow-up data,and attempts to evaluate the usefulness of regular endoscopic ultrasound（EUS）surveillance and the necessity,safety and feasibility of endoscopic submucosal dissection（ESD）for small GISTs,thus provide evidence for the revision of the guideline.

This a prospective real-world navigation study using tumor DNA sequencing technology to sequence genes of previously treated and refractory gastrointestinal tumors, which are generally considered to be highly heterogeneous and complex, to screen potential molecular targeted drugs for individualized treatment. This study may provide feasibility and response information, which will be the basis for designing better randomized trials, which may change the pattern of cancer treatment. If the hypothesis is finally proved, it will help doctors and molecular biologists to choose the best drug (or combination of drugs) based on the individual oncogenomics of each patient.

Gastrointestinal stromal tumor (GIST) is a kind of mesenchymal tumor with malignant differentiation potential. It originated from mesenchymal stem cells of gastrointestinal tract.The most common is that gastric stromal tumors(GST) make up 60-70% of gastrointestinal stromal tumors.The first choice for the treatment of non-metastatic gastric stromal tumors is to ensure the integrity of the tumor and obtain the negative surgical margin.At present, the common surgical methods of resection of gastric stromal tumors include laparotomy and laparoscopy, most of them are partial gastrectomy, wedge-shaped resection, proximal subtotal gastrectomy, distal subtotal gastrectomy and total gastrectomy, etc.There was no significant difference between open surgery and laparoscopic surgery.With the rapid development of endoscopic technology in recent years, endoscopes have been continuously explored in practice.Laparoscopic endoscopic cooperative surgery(LECS) is different from the past technology. It is a new radical resection of GIST presented by Japanese scholars. LECS resects the tumor completely by laparoscopy with the help of the precise positioning and guidance of endoscopy .This method conforms to the idea of the modern minimally invasive surgery, and avoids many problems，such as incomplete resection and disorders of digestion caused by excessive tissue resection. Investigators will observe the diffenrence of LECS and traditional laparoscopic surgeries.Firstly,the investigators will collect 80 cases of GST patients, randomly assigned for the laparoscopic group, the LECS surgical treatment. Secondly, to analyzing the basic treatment and follow-up data, including the operation time, blood loss, the number of transfer laparotomy or laparoscopy, the number of cut edge positive, the distances of cut edge away from the tumor edge, the cases of anastomotic fistula bleeding, stenosis, average such confinement, the meal time, cost of treatment, tumor recurrence rate, the presence of residual stomach, upset stomach and frequency, reflux esophagitis, bile reflux gastritis and other indicators.The purpose of this subject is to observe the effectivity and safety of LECS , invent serval LECS equipment patents and provide some references for LECS applying to the minimally invasive surgery of the digestive tract tumor and multidisciplinary treatment mode.It also provides reference for gastrointestinal stromal tumors, leiomyomas, ectopic pancreas, carcinoid, early carcinomas, giant adenomas and polyps.

This study evaluates the efficacy and safety of surgical intervention in patients with focally progressive GISTs after imatinib treatment. The enrolled patients will be randomized to receive surgery following imatinib 400 milligram per day (MG/d) or only tyrosine kinase inhibitor (Imatinib 600 MG/d or Sunitinib 37.5 MG/d).

Gastrointestinal stromal tumors (GIST) compose approximately 20% of soft tissue sarcomas with an annual incidence of approximately 7 per million population. GISTs occur throughout the GI tract, most commonly in the stomach or small intestine. The main treatment for localised GIST is surgical resection. At least 40% of these patients will develop recurrence or metastasis following complete resection. Local recurrence, liver metastases and/or dissemination within the abdominal cavity are the most common clinical manifestations. Although imatinib and sunitinib has greatly improved the quality of life and survival of patients with advanced GIST. Analysis of clinical trials revealed that patients with tumours with KIT exon 17 or 18 mutations, with a second mutation in KIT exon 17 or 18, had worse responses to imatinib and sunitinib. Some patients with PDGFRA D842V mutation do not respond to the present standard therapies. Anlotinib (1-[[[4-(4-fluoro-2-methyl-1H-indol-5-yloxy)-6-methoxyquinolin-7-Yl] oxy] methyl]cyclopropanamine dihydrochloride) , a multi-targeted tyrosine kinase inhibitor (TKI), characterized as a highly selective and potent c-KIT, VEGFR, PDGFR, FGFR inhibitor. In vitro and in vivo, Anlotinib has a broad spectrum of inhibitory action on tumor angiogenesis and growth, which showed broad activity against soft tissue sarcoma and GIST with D842V, D816H, V560G and V654A mutations. In 2015, the US FDA granted orphan drug treatment for ovarian cancer.

Famitinib is a tyrosin-inhibitor agent targeting at c-Kit, VEGFR2, PDGFR, VEGFR3, Flt1 and Flt3. Phase I study has shown that the toxicity is manageable. The purpose of this study is to evaluate the efficacy and safety profile of Famitinib in patients with advanced or metastatic gastrointestinal stromal tumor who failed from imatinib therapy.

The purpose of this study is to determine if and how often an unexpected fast increase of disease and complaints shows after stopping the anti-angiogenetic therapy

This is a 2-arm, randomized, open-label, international, multicenter study comparing the efficacy of DCC-2618 to sunitinib in GIST patients who progressed on or were intolerant to first-line anticancer treatment with imatinib. Approximately 426 patients will be randomized in a 1:1 ratio to DCC-2618 150 mg once daily (QD) (continuous dosing for 6 week cycles) or sunitinib 50 mg QD (6 week cycles, 4 weeks on, 2 weeks off).

The purpose of this study is to determine whether dasatinib is effective and safe in the treatment of refractory metastatic gastrointestinal stromal tumor