Prognostic significance of primary tumor localization in patients with metastatic colorectal cancer: Is it beneficial to select targeted treatment? Real-life experience from Turkey.
{"title":"Prognostic significance of primary tumor localization in patients with metastatic colorectal cancer: Is it beneficial to select targeted treatment? Real-life experience from Turkey.","authors":"Burcin Cakan, Ozgur Acikgoz, Ahmet Bilici, Tarik Demir, Bala Basak Oven, Jamshid Hamdard, Oktay Olmuscelik, Omer Fatih Olmez, Mesut Seker, Ozcan Yildiz","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to investigate the prognostic value,and the effect of primary tumor location on targeted therapy selection in patients with metastatic colorectal cancer (mCRC).</p><p><strong>Methods: </strong>A total of 201 patients with de novo mCRC who received first line treatment were retrospectively analyzed. Clinicopathological features, treatment outcomes, the primary tumor surgery, metastasectomies/local therapies and survivals were evaluated in terms of both RAS mutation status and primary tumor sidedness.</p><p><strong>Results: </strong>Tumor localization showed 140 (69.7%) patients with left-sided and 61 (30.3%) with right-sided tumors. Median progression-free survival (PFS) and overall survival (OS) were significantly shorter in patients with right-sided tumor than those with left-sided tumors (10.1 vs 12.9 months, p=0.005; 25 vs 44.4 months, p=0.008, respectively). In addition,the median OS interval of patients receiving anti-VEGF containing regimen was better than those treated with anti-EGFR containing regimen (50.7 vs. 26.9 months, p=0.001). Multivariate analysis indicated that age (HR:0.41,p=0.045), primary tumor resection (HR:0.41,p=0.037) and primary tumor localization (HR:0.38,p=0.021) for PFS and age (HR:0.39, p=0.09), the presence of BRAF mutation (HR:0.59,p=0.019) and the type of targeted therapy (HR:3.16,p=0.025) for OS were independent prognostic factors.</p><p><strong>Conclusions: </strong>Our results showed that primary tumor location is a prognostic factor in mCRC patients regardless of RAS status. Primary tumor location before treatment decision may be a simple indicator predicting survival and in choosing targeted agent.</p>","PeriodicalId":50248,"journal":{"name":"Journal of Buon","volume":" ","pages":"1908-1917"},"PeriodicalIF":0.0000,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Buon","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: The purpose of this study was to investigate the prognostic value,and the effect of primary tumor location on targeted therapy selection in patients with metastatic colorectal cancer (mCRC).
Methods: A total of 201 patients with de novo mCRC who received first line treatment were retrospectively analyzed. Clinicopathological features, treatment outcomes, the primary tumor surgery, metastasectomies/local therapies and survivals were evaluated in terms of both RAS mutation status and primary tumor sidedness.
Results: Tumor localization showed 140 (69.7%) patients with left-sided and 61 (30.3%) with right-sided tumors. Median progression-free survival (PFS) and overall survival (OS) were significantly shorter in patients with right-sided tumor than those with left-sided tumors (10.1 vs 12.9 months, p=0.005; 25 vs 44.4 months, p=0.008, respectively). In addition,the median OS interval of patients receiving anti-VEGF containing regimen was better than those treated with anti-EGFR containing regimen (50.7 vs. 26.9 months, p=0.001). Multivariate analysis indicated that age (HR:0.41,p=0.045), primary tumor resection (HR:0.41,p=0.037) and primary tumor localization (HR:0.38,p=0.021) for PFS and age (HR:0.39, p=0.09), the presence of BRAF mutation (HR:0.59,p=0.019) and the type of targeted therapy (HR:3.16,p=0.025) for OS were independent prognostic factors.
Conclusions: Our results showed that primary tumor location is a prognostic factor in mCRC patients regardless of RAS status. Primary tumor location before treatment decision may be a simple indicator predicting survival and in choosing targeted agent.
期刊介绍：
JBUON aims at the rapid diffusion of scientific knowledge in Oncology.
Its character is multidisciplinary, therefore all aspects of oncologic activities are welcome including clinical research (medical oncology, radiation oncology, surgical oncology, nursing oncology, psycho-oncology, supportive care), as well as clinically-oriented basic and laboratory research, cancer epidemiology and social and ethical aspects of cancer. Experts of all these disciplines are included in the Editorial Board.
With a rapidly increasing body of new discoveries in clinical therapeutics, the molecular mechanisms that contribute to carcinogenesis, advancements in accurate and early diagnosis etc, JBUON offers a free forum for clinicians and basic researchers to make known promptly their achievements around the world.
With this aim JBUON accepts a broad spectrum of articles such as editorials, original articles, reviews, special articles, short communications, commentaries, letters to the editor and correspondence among authors and readers.
JBUON keeps the characteristics of its former paper print edition and appears as a bimonthly e-published journal with continuous volume, issue and page numbers.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
