A Study on Non-invasive Early Diagnosis of Gastrointestinal Stromal Tumors and Differentiation of Benign and Malignant Nodules

Summary

Gastrointestinal Stromal Tumors (GIST) is the most common mesenchymal tumor of the gastrointestinal tract, and the incidence rate in China has increased year by year in recent years.Gastrointestinal stromal tumors are not sensitive to radiotherapy and traditional infusion chemotherapy. Currently, they are generally treated with surgery, but they are prone to recurrence and metastasis.For nodules with a particle size between 2 and 5 cm, there may be both benign and malignant, and there is still a lack of fast and accurate methods for distinguishing benign and malignant.Many benign nodules were removed (in the pathological examination of postoperative resected tissue). In addition, if it is found to be late, there is a possibility of invading surrounding tissues and metastasis, so that it is impossible to cure. Therefore, early diagnosis and early surgery and benign and malignant differentiation of small nodules are the key to the clinical diagnosis and treatment of gastrointestinal stromal tumors.At present, second-generation gene sequencing (NGS) and liquid biopsy are rarely reported in the field of GIST. A few domestic and foreign studies have found that it can detect rare mutation types, and may find secondary gene mutations early, which has potential applicability, but Overall, the clinical guidance of these NGS-based studies focuses on prognosis and drug resistance , as well as some studies based on low-throughput platforms. Therefore, early diagnosis and benign and malignant discrimination based on high-throughput sequencing and liquid biopsy have significant clinical significance for the diagnosis and treatment of gastrointestinal stromal tumors.

Conditions

• Gastrointestinal Stromal Tumor

Interventions

OTHER

DNA extraction of tumer tissue samples and high-throughput sequencing of small panels

DNA extraction of stromal tumor tissues and high-throughput sequencing of small panels were performed, and the relationship between the mutation spectrum of each sample and the corresponding patient clinical data (staging) was analyzed

OTHER

DNA extraction of tumer tissue samples and blood sample and high-throughput sequencing of small panels

DNA extraction and small panel sequencing were performed for the two types of samples of the patients respectively, and the DNA sequencing results of the two types of samples were compared, and the clinical data of the corresponding patients were referenced to evaluate the consistency of the results of peripheral blood cfDNA and tissue gDNA for the gene detection of gastrointestinal stromal tumor

OTHER

DNA extraction of tumer tissue samples and blood sample and high-throughput sequencing of small panels

DNA extraction and small panel sequencing were conducted for each patient sample. Based on the indicator results of the previous mutant spectrum for each stage of gastrointestinal stromal tumor, the clinical stage classification of patients and the benign and malignant nodules were determined by the mutant spectrum, and compared with the real clinical data of patients

Sponsors & Collaborators

• Fudan University

  collaborator OTHER

• The First Affiliated Hospital with Nanjing Medical University

  lead OTHER

Eligibility

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2019-09-01

Primary Completion

2020-05-31

Completion

2020-05-31

Countries

• China

Study Locations