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Prognostic significance and molecular features of colorectal mucinous adenocarcinomas: A strobe-compliant study
Department of Gastrointestinal Surgery, Institute of Digestive Surgery and State key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China; Department of Oncology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
Department of Oncology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
Department of Paediatric Surgery, Institute of Digestive Surgery and State key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
Department of Oncology, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
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2015 (English)In: Medicine (Baltimore, Md.), ISSN 0025-7974, E-ISSN 1536-5964, Vol. 94, no 51, article id e2350Article in journal (Refereed) Published
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Abstract [en]

Mucinous adenocarcinoma (MC) is a special histology subtype of colorectal adenocarcinoma. The survival of MC is controversial and the prognostic biomarkers of MC remain unclear. To analyze prognostic significance and molecular features of colorectal MC. This study included 755,682 and 1001 colorectal cancer (CRC) patients from Surveillance, Epidemiology, and End Results program (SEER, 1973 2011), and Linkoping Cancer (LC, 1972-2009) databases. We investigated independently the clinicopathological characteristics, survival, and variety of molecular features from these 2 databases. MC was found in 9.3% and 9.8% patients in SEER and LC, respectively. MC was more frequently localized in the right colon compared with nonmucinous adenocarcinoma (NMC) in both SEER (57.7% vs 37.2%, P < 0.001) and LC (46.9% vs 27.7%, P < 0.001). Colorectal MC patients had significantly worse cancer-specific survival (CSS) than NMC patients (SEER, P < 0.001; LC, P = 0.026), prominently in stage III (SEER, P < 0.001; P=0.023). The multivariate survival analysis showed that MC was independently related to poor prognosis in rectal cancer patients (SEER, hazard ratios [HR], 1.076; 95% confidence intervals [CI], 1.057-1.096; P < 0.001). In LC, the integrated analysis of genetic and epigenetic features showed that that strong expression of PINCH (HR, 3.954; 95% CI, 1.493-10.47; P = 0.013) and weak expression of RAD50 (HR 0.348, 95% CT, 0.106-1.192; P=0.026) were significantly associated with poor CSS of colorectal MC patients. In conclusion, the colorectal MC patients had significantly worse CSS than NMC patients, prominently in stage III. MC was an independent prognostic factor associated with worse survival in rectal cancer patients. The PINCH and RAD50 were prognostic biomarkers for colorectal MC patients.

Place, publisher, year, edition, pages
Lippincott Williams & Wilkins, 2015. Vol. 94, no 51, article id e2350
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General Practice
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Family Medicine
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URN: urn:nbn:se:oru:diva-48947DOI: 10.1097/MD.0000000000002350ISI: 000369856200034PubMedID: 26705231Scopus ID: 2-s2.0-84952645874OAI: oai:DiVA.org:oru-48947DiVA, id: diva2:909019
Funder
Swedish Cancer SocietySwedish Research Council
Note

Funding Agencies:

National Scientific Foundation of China 81401949  81300359

Health Research Council in the South-East of Sweden

Available from: 2016-03-04 Created: 2016-03-04 Last updated: 2018-07-03Bibliographically approved

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