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Kawaguchi, Yoshikuni; Kopetz, Scott; Kwong, Lawrence; Xiao, Lianchun; Morris, Jeffrey S.; Tran Cao, Hop S.; Tzeng, Ching-Wei D.; Chun, Yun Shin; Lee, Jeffrey E.; Vauthey, Jean-Nicolas
Journal of the American College of Surgeons, 08/2021, Letnik: 233, Številka: 2Journal Article
An understanding of signaling pathways has not been fully incorporated into prognostication and therapeutic options. We evaluated the hypothesis that information about cancer-related signaling pathways can improve prognostic stratification and explain some of the clinical heterogeneity in patients with metastatic colorectal cancer. We analyzed prognostic relevance of signaling pathways in patients undergoing resection of colorectal liver metastases (CLM) from 2004–2017, and clinical actionability of gene alterations in 7 signaling pathways: p53, Wnt, RTK-RAS, PI3K, TGFβ, Notch, and cell cycle. To assess the wide applicability, the results were validated in an external retrospective cohort including patients with unresectable metastatic colorectal cancer. Of 579 patients, the numbers of patients with pathway alterations were as follows: p53, n = 420 (72.5%); Wnt, 340 (58.7%); RTK-RAS, 333 (57.5%); PI3K, 110 (19.0%); TGFβ, 65 (11.2%); Notch, 41 (7.1%); and cell cycle, 15 (2.6%). More than 80% of alterations in each pathway occurred in a single predominant gene TP53, APC, KRAS, PIK3CA, FBXW7, and RB1 in p53, Wnt, RTK-RAS, PI3K, Notch, and cell cycle pathways, respectively. Alterations of 4 pathways (p53, RTK-RAS, TGFβ, and Notch) and corresponding predominant genes (TP53, RAS/BRAF, SMAD4, and FBXW7) were significantly associated with worse overall survival (OS), and alterations of Wnt pathway (APC) were associated with better OS in the median follow-up duration of 3.8 years. Similarly, in the external cohort, alterations of p53 (TP53) and RTK-RAS (RAS/BRAF) were significantly associated with worse OS, whereas alteration of Wnt (APC) was associated with better OS in the median follow-up duration of 2.6 years. Genomic sequencing provides insights into clinical heterogeneity and permits finer prognostic stratification in patients with metastatic colorectal cancer. Display omitted
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in: SICRIS
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