This study aims to investigate the molecular characteristics of Chinese gastric cancer patients. In our study, the , , and mutation status of 485 GC patients were analyzed by Sanger sequencing. Kaplan-Meier analysis was used to plot survival curves according to different genotypes. The results show that the frequency of , and mutations were 4.1%, 1.2% and 3.5%, respectively. mutations were significantly concentrated in stage III and IV gastric cancer (=0.009). G12V mutation carriers have much shorter OS than other mutation carriers and wild-type group patients (=0.013). In conclusion, only the G12V mutation has an adverse effect on patient survival.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400811 | PMC |
http://dx.doi.org/10.7150/jca.27899 | DOI Listing |
Pol J Pathol
January 2025
Department of Pulmonary Medicine, Affiliated Cancer Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China.
Mutations in the KRAS gene in non-small cell lung cancer (NSCLC) are common drivers. Gene expression and mutation data of NSCLC were collected from the TCGA dataset. DEGs between KRAS mutations and wild type were identified, and enrichment analysis was performed.
View Article and Find Full Text PDFJ Pathol
January 2025
Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
DICER1-associated sarcoma is an emerging entity, defined by either somatic or germline dicer 1, ribonuclease III (DICER1) mutations and sharing characteristic morphologic features irrespective of the site of origin. In addition to the DICER1 driver mutation, concurrent genomic alterations, including tumor protein 53 (TP53) inactivation and RAS pathway activation, are frequently detected. Tumors that morphologically resemble malignant peripheral nerve sheath tumor (MPNST) have rarely been reported among DICER1 sarcomas and often pose diagnostic challenges.
View Article and Find Full Text PDFJCI Insight
January 2025
Department of Hepatobiliary Pancreatic Surgery.
T cells targeting a KRAS mutation can induce durable tumor regression in some patients with metastatic epithelial cancer. It is unknown whether T cells targeting mutant KRAS that are capable of killing tumor cells can be identified from peripheral blood of patients with pancreatic cancer. We developed an in vitro stimulation approach and identified HLA-A*11:01-restricted KRAS G12V-reactive CD8+ T cells and HLA-DRB1*15:01-restricted KRAS G12V-reactive CD4+ T cells from peripheral blood of 2 out of 6 HLA-A*11:01-positive patients with pancreatic cancer whose tumors expressed KRAS G12V.
View Article and Find Full Text PDFAnn Pancreat Cancer
June 2024
Department of Oncology, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Background: Pancreatic ductal adenocarcinoma (PDAC) is predicted to be the second leading cause of cancer-related death by 2030. This is driven by a high case-fatality rate with most patients even with radiologically localized PDAC at diagnosis ultimately relapsing with metastatic disease. mutations present in 90% to 95% of PDAC drive these poor statistics through its role in driving cellular growth, inhibition of apoptosis, and immunosuppression.
View Article and Find Full Text PDFAnn Surg Oncol
January 2025
Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Background: The oncologic significance of specific KRAS point mutations for patients with colorectal liver metastases (CLM) is uncertain. This study aimed to assess the prognostic impact of KRAS point mutations on patients who underwent surgery for CLM.
Methods: Patients who underwent curative-intent surgery for CLM from 2001 to 2020 were selected for the study.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!