Search results for "Oncogene"
showing 10 items of 1005 documents
Circulating MYCN DNA Predicts MYCN-Amplification in Neuroblastoma
2005
Oncogene-Associated Growth Behavior and Oxygenation of Multicellular Spheroids from Rat Embryo Fibroblasts
1994
It is now well documented that naturally occurring and experimentally induced tumors develop by a multistep process involving different stages such as unlimited growth, metastasis, and invasiveness. There is much evidence that malignant transformation involves activation of oncogenes and/or loss of suppressor genes (= anti-oncogenes). The former fundamental class of genes, including the ras and myc families, are associated with cell proliferation and differentiation and may mediate tumor initiation, promotion and progression (for reviews see: Spandidos, 1985; Spandidos and Anderson, 1987, Weinberg, 1989).
Oncogene Addiction in Solid Tumors
2015
The term “oncogenic addiction” refers to the phenomenon by which tumor cells become completely dependent on a single pathway, derived from the activation of a specific oncogene, for their survival and proliferation. The clinical relevance of oncogene addiction paradigm is highlighted by a growing number of examples that demonstrate the efficacy of several therapeutic agents that target specific oncogenes in various cancer types. This chapter aims to summarize the recent evidences concerning the concept of oncogene addiction and describes molecular mechanisms that could explain this phenomenon.
Hypermethylator phenotype in sporadic colon cancer: study on a population-based series of 582 cases.
2008
Abstract The CpG island methylator phenotype (CIMP) is a distinct phenotype in colorectal cancer, associated with specific clinical, pathologic, and molecular features. However, most of the studies stratified methylation according to two subgroups (CIMP-High versus No-CIMP/CIMP-Low). In our study, we defined three different subgroups of methylation (No-CIMP, CIMP-Low, and CIMP-High) and evaluated the prognostic significance of methylation status on a population-based series of sporadic colon cancers. A total of 582 colon adenocarcinomas were evaluated using methylation-specific PCR for 5 markers (hMLH1, P16, MINT1, MINT2, and MINT31). No-CIMP status was defined as no methylated locus, CIMP-…
Efficacy of nivolumab in pre-treated non-small-cell lung cancer patients harbouring KRAS mutations
2018
Background: The present study investigated the efficacy and safety of nivolumab in pre-treated patients with advanced NSCLC harbouring KRAS mutations. Methods: Clinical data and KRAS mutational status were analysed in patients treated with nivolumab within the Italian Expanded Access Program. Objective response rate, progression-free survival and overall survival were evaluated. Patients were monitored for adverse events using the National Cancer Institute Common Terminology Criteria for Adverse Events. Results: Among 530 patients evaluated for KRAS mutations, 206 (39%) were positive while 324 (61%) were KRAS wild-type mutations. KRAS status did not influence nivolumab efficacy in terms of …
Type A competitiveness traits correlate with downregulation of c-Fos expression in patients with type 1 diabetes.
2019
International audience; AimType A personality has been associated with increased survival in people with type 1 diabetes (T1D). Systemic low-grade inflammation may play a critical role, as suggested in recent reports, although the links between the inflammatory circulating transcriptome and Type A remain unknown. This prompted our exploration of the potential associations between Type A personality and c-Fos gene expression, a candidate gene closely linked to inflammatory processes, in T1D.MethodsType A personality was assessed by Bortner questionnaire in patients with T1D, and two subscales – ‘speed’ and ‘competitiveness’ – were used to measure these specific dimensions of Type A. Expressi…
Effect of c-Met expression on survival in head and neck squamous cell carcinoma
2005
The proto-oncogene c-Met has been suggested to be associated with progression of squamous cell carcinoma of the head and neck. The aims of the present study were to assess the prevalence of c-Met expression in oral squamous cell carcinoma (OSCC) and to verify whether c-Met can be considered a marker of prognosis in these patients. In a retrospective study, a cohort of 84 OSCC patients was investigated for c-Met expression and its cellular localization by immunohistochemistry. After grouping for c-Met expression, OSCC patients were statistically analyzed for the variables age, gender, histological grading, tumor node metastasis, staging and overall survival rate. Univariate and multivariate …
Serum proteome profiling of primary breast cancer indicates a specific biomarker profile.
2011
Non-invasive biomarkers for early breast cancer detection are urgently needed, as the risk of recurrent morbidity and mortality is closely related to the stage of the disease at the time of primary surgery. Currently, there are no established clinical biomarkers for breast cancer. Evaluation of protein expression patterns in body fluids using proteomic technologies can be used to discover new biomarkers for the detection of breast cancer. The aim of this study was to identify a biomarker signature identifying primary non-metastatic breast cancer and healthy controls. We screened 91 serum samples including 45 breast cancer patients and 46 healthy women using a proteomic approach. We found 14…
Breast-cancer predisposition in multiple endocrine neoplasia type 1
2014
Women with multiple endocrine neoplasia type 1 related to mutations in the gene encoding menin (MEN1) have approximately twice the risk of breast cancer as do women in the general population.