Molecular Classification of Gastric Adenocarcinoma: Translating New Insights from The Cancer Genome Atlas Research Network

Author(s):  
Yu Sunakawa ◽  
Heinz-Josef Lenz
Author(s):  
Xudong Tang ◽  
Mengyan Zhang ◽  
Liang Sun ◽  
Fengyan Xu ◽  
Xin Peng ◽  
...  

Long non-coding RNAs (lncRNAs) play key roles in tumors and function not only as important molecular markers for cancer prognosis, but also as molecular characteristics at the pan-cancer level. Because of the poor prognosis of pancreatic cancer, accurate assessment of prognosis is a key issue in the development of treatment plans for pancreatic cancer. Here we analyzed pancreatic cancer data from The Cancer Genome Atlas and The Genotype Tissue Expression database using Cox regression and lasso regression in analyses using a combination of the two databases as well as only The Cancer Genome Atlas database (Cancer Genome Atlas Research Network et al., 2013). A prognostic risk score model with significant correlation with pancreatic cancer survival was constructed, and two lncRNAs were investigated. Additional analysis of 33 cancers using the two lncRNAs showed that lncRNA TsPOAP1-AS1 was a prognostic marker of seven cancers, among which pancreatic cancer was the most significant, and lncRNA mi600hg was a prognostic marker of ovarian cancer and pancreatic cancer. LncRNA TsPOAP1-AS1 is associated with clinical stage and tumor mutation burden of some cancers as well as a strong degree of immune infiltration in many cancers, while a strong correlation between lncRNA mi600hg and microsatellite instability was observed in several cancers. The results of this study help further our understanding of the different functions of lncRNAs in cancer and may aid in the clinical application of lncRNAs as prognostic factors for cancer.


2021 ◽  
Vol 145 (11) ◽  
pp. 1367-1378
Author(s):  
Minhua Wang ◽  
Pei Hui

Context.— Endometrial carcinoma is the most common gynecologic malignancy in the United States and has been traditionally classified based on histology. However, the distinction of certain histologic subtypes based on morphology is not uncommonly problematic, and as such, immunohistochemical study is often needed. Advances in comprehensive tumor sequencing have provided novel molecular profiles of endometrial carcinomas. Four distinct molecular subtypes with different prognostic values have been proposed by The Cancer Genome Atlas program: polymerase epsilon ultramutated, microsatellite instability hypermutated, copy number low (microsatellite stable or no specific molecular profile), and copy number high (serouslike, p53 mutant). Objective.— To discuss the utilities of commonly used immunohistochemical markers for the classification of endometrial carcinomas and to review the recent advancements of The Cancer Genome Atlas molecular reclassification and their potential impact on treatment strategies. Data Sources.— Literature review and authors' personal practice experience. Conclusions.— The current practice of classifying endometrial cancers is predominantly based on morphology. The use of ancillary testing, including immunohistochemistry, is helpful in the identification, differential diagnosis, and classification of these cancers. New developments such as molecular subtyping have provided insightful prognostic values for endometrial carcinomas. The proposed The Cancer Genome Atlas classification is poised to gain further prominence in guiding the prognostic evaluation for tailored treatment strategies in the near future.


Ophthalmology ◽  
2019 ◽  
Vol 126 (10) ◽  
pp. 1445-1453 ◽  
Author(s):  
Pornpattana Vichitvejpaisal ◽  
Lauren A. Dalvin ◽  
Mehdi Mazloumi ◽  
Kathryn G. Ewens ◽  
Arupa Ganguly ◽  
...  

2018 ◽  
Vol 09 (04) ◽  
pp. 192-193
Author(s):  
Ine Schmale

Zusammenfassung Die molekularbiologische Beschreibung des Magenkarzinoms hat sich durch die Arbeit des TCGA (The Cancer Genome Atlas) Research Network stark gewandelt. In einer aktuellen Publikation des TCGA wurden vier genomische Subtypen unterschieden: Epstein-Barr-Virus-infizierte Tumoren (EBV), Mikrosatelliten-instabile Tumoren (MSI), genomisch stabile Tumoren (GS) und chromosomal instabile Tumoren (CIN). Dabei unterscheidet sich das Plattenepithel des Ösophagus fundamental vom dem des Adenokarzinoms Das Adenokarzinom des Ösophagus bzw. des ösophagogastralen Übergangs (ÖGÜ) entspricht eher dem CIN-Subtyp des proximalen Magenkarzinoms, berichtete Prof. Timo Gaiser, Universitätsklinikum Mannheim, auf dem Deutschen Krebs-kongress (DKK) in Berlin.


2017 ◽  
Vol 25 (5) ◽  
pp. 482-489
Author(s):  
Nayoung Han ◽  
Yun-Kyoung Song ◽  
Gilbert J. Burckart ◽  
Eunhee Ji ◽  
In-Wha Kim ◽  
...  

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