Search results for "KRa"
showing 10 items of 1332 documents
Can KRAS and BRAF mutations limit the benefit of liver resection in metastatic colorectal cancer patients? A systematic review and meta-analysis.
2016
Clinical trials investigated the potential role of both KRAS and BRAF mutations, as prognostic biomarkers, in colorectal cancer (CRC) patients who underwent surgical treatment of CRC-related liver metastases (CLM), showing conflicting results. This meta-analysis aims to review all the studies reporting survival outcomes (recurrence free survival (RFS), and/or overall survival (OS)) of patients undergoing resection of CLM, stratified according to KRAS and/or BRAF mutation status. Background: Clinical trials investigated the potential role of both KRAS and BRAF mutations, as prognostic biomarkers, in colorectal cancer (CRC) patients who underwent surgical treatment of CRC-related liver metast…
Pulmonary Adenocarcinoma With Enteric Differentiation: Immunohistochemistry and Molecular Morphology
2018
Pulmonary adenocarcinoma with enteric differentiation (PAED) is a rare subtype of lung adenocarcinoma recently recognized in the WHO classification. It is defined as an adenocarcinoma in which the enteric component exceeds 50% and have to show the expression of at least 1 immunohistochemical marker of enteric differentiation. Although the definition of this tumor type is very important, above all in the differential diagnosis between a primary lung tumor and a metastasis of colorectal adenocarcinoma, this cancer still lacks a distinctive immunohistochemical and molecular signature. We recruited the largest series in the literature of PAEDs according to the morphology and the positivity for …
KRAS mutations testing in non-small cell lung cancer: the role of Liquid biopsy in the basal setting
2020
In advanced stage non-small cell lung cancer (NSCLC) patients, Kirsten Rat Sarcoma Viral Oncogene Homolog (KRAS) testing may soon acquire a predictive significance to select patients for AMG510 treatment. Since tissue samples are not always available, liquid biopsy may represent a viable option for KRAS testing. Here, we review the last three years clinical practice performed on 194 plasma based liquid biopsies by next generation sequencing (NGS) SiRe(®) panel. In particular, 36 (18.6%) KRAS mutated cases were identified, with an overall median allelic frequency of 5.0% (ranging between 0.2% and 46.8%). No concomitant mutations were observed in the other NSCLC clinical relevant genes includ…
Interleukin-17A Promotes Lung Tumor Progression through Neutrophil Attraction to Tumor Sites and Mediating Resistance to PD-1 Blockade
2017
Abstract Introduction Proinflammatory cytokine interleukin-17A (IL-17A) is overexpressed in a subset of patients with lung cancer. We hypothesized that IL-17A promotes a protumorigenic inflammatory phenotype and inhibits antitumor immune responses. Methods We generated bitransgenic mice expressing a conditional IL-17A allele along with conditional Kras G12D and performed immune phenotyping of mouse lungs, a survival analysis, and treatment studies with antibodies either blocking programmed cell death 1 (PD-1) or IL-6 or depleting neutrophils. To support the preclinical findings, we analyzed human gene expression data sets and immune profiled patient lung tumors. Results Tumors in IL-17:Kras…
PI3K-driven HER2 expression is a potential therapeutic target in colorectal cancer stem cells
2020
ObjectiveCancer stem cells are responsible for tumour spreading and relapse. Human epidermal growth factor receptor 2 (HER2) expression is a negative prognostic factor in colorectal cancer (CRC) and a potential target in tumours carrying the gene amplification. Our aim was to define the expression of HER2 in colorectal cancer stem cells (CR-CSCs) and its possible role as therapeutic target in CRC resistant to anti- epidermal growth factor receptor (EGFR) therapy.DesignA collection of primary sphere cell cultures obtained from 60 CRC specimens was used to generate CR-CSC mouse avatars to preclinically validate therapeutic options. We also made use of the ChIP-seq analysis for transcriptional…
The Neolithic Transition in the Baltic Was Not Driven by Admixture with Early European Farmers
2017
Summary The Neolithic transition was a dynamic time in European prehistory of cultural, social, and technological change. Although this period has been well explored in central Europe using ancient nuclear DNA [1, 2], its genetic impact on northern and eastern parts of this continent has not been as extensively studied. To broaden our understanding of the Neolithic transition across Europe, we analyzed eight ancient genomes: six samples (four to ∼1- to 4-fold coverage) from a 3,500 year temporal transect (∼8,300–4,800 calibrated years before present) through the Baltic region dating from the Mesolithic to the Late Neolithic and two samples spanning the Mesolithic-Neolithic boundary from the…
Merit-based exclusion in Finnish music schools
2019
In this article I analyse merit-based exclusion in Finnish music schools for children and young people. I base my study on my earlier research on meritocracy and written data collected online from current and former music school students in the autumn and winter of 2015–2016. I am able to show there are implicit and explicit merit-based hierarchies in the music school. Hierarchies and exclusion are shown to be connected to the institution’s meritocratic features. As the hierarchies are merit-based, it is hard to question them. The hierarchies justify excluding students from certain practices such as performances. These practices are in fact learning opportunities, as has been established by…
Modulation of impulsive behaviours using transcranial random noise stimulation
2021
Ukrainian culture fansubbed: Challenges of amateur subtitling
2021
The research addresses the issues of rendering culture specific information in amateur subtitling from the Ukrainian into the English language. The fansubbing of proper names, culture-bound common nouns, formulaic sequences, sociolects and songs by the non-professional translators for whom English is a foreign language is the main focus of this study. Thus, the comparative analysis of the Ukrainian filmsChasing Two Hares(1961),Shadows of Forgotten Ancestors(1965) andPrayer for Hetman Mazepa(2001), and their English subtitles reveals the difficulties fansubbers may face, as well as discusses translations strategies and techniques employed. Moreover, the study delves into reasons underlying t…