Colorectal cancer (CRC) is driven in part by dysregulated Wnt, Ras-Raf-MAPK, TGF-β, and PI3K-Akt signaling. The progression of CRC is also promoted by molecular alterations and heterogeneous-yet interconnected-gene mutations, chromosomal instability, transcriptomic subtypes, and immune signatures. Genomic alterations of CRC progression lead to changes in RNA expression, which support CRC metastasis. An RNA-based classification system used for CRC, known as consensus molecular subtyping (CMS), has four classes. CMS1 has the lowest survival after relapse of the four CRC CMS phenotypes. Here, we identify gene signatures and associated coding mRNAs that are co-expressed during CMS1 CRC progression. Using RNA-seq data from CRC primary tumor samples, acquired from The Cancer Genome Atlas (TCGA), we identified co-expression gene networks significantly correlated with CMS1 CRC progression. CXCL13, CXCR5, IL10, PIK3R5, PIK3AP1, CCL19, and other co-expressed genes were identified to be positively correlated with CMS1. The co-expressed eigengene networks for CMS1 were significantly and positively correlated with the TNF, WNT, and ERK1 and ERK2 signaling pathways, which together promote cell proliferation and survival. This network was also aligned with biological characteristics of CMS1 CRC, being positively correlated to right-sided tumors, microsatellite instability, chemokine-mediated signaling pathways, and immune responses. CMS1 also differentially expressed genes involved in PI3K-Akt signaling. Our findings reveal CRC gene networks related to oncogenic signaling cascades, cell activation, and positive regulation of immune responses distinguishing CMS1 from other CRC subtypes.

UNASSIGNED: Clinical practice guidelines are an essential tool for translating evidence into practice. Reporting Items for Practice Guidelines in Healthcare (RIGHT) checklist assists to guide the reporting in guidelines. We used RIGHT to assess the reporting completeness and quality of guidelines on colorectal cancer (CRC).
UNASSIGNED: We searched the electronic databases Medline (via PubMed), Chinese National Knowledge Infrastructure (CNKI), Wanfang and Chinese Biomedical Literature (CBM) from January 1st, 2018 to December 1st, 2020 for guidelines on CRC. Websites of guideline development organizations were also searched. Two investigators assessed the reporting quality of the included guidelines, and calculated the numbers of guidelines that were compliant with each RIGHT checklist item and the mean proportions of reported items for each of the seven RIGHT checklist domains.
UNASSIGNED: Twenty-seven colorectal guidelines were included. The proportions of reported items in each RIGHT domain were 71.0% for Basic information, 66.2% for Background, 45.9% for Evidence, 68.8% for Recommendations, 24.1% for Review and quality assurance, 33.3% for Funding and declaration and management of interests, and 40.7% for Other information.
UNASSIGNED: The reporting quality of colorectal guidelines was moderate. A systematic use of the RIGHT checklist during the development process could improve the reporting quality of guidelines in the future.

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