Publications by authors named "Feliu J"

Purpose: Pancreatic adenocarcinoma (PDAC) has limited treatment options. We compared the efficacy of comprehensive precision medicine against the conventional treatment in PDAC.

Methods: Phase III trial of advanced PDAC where patients were randomized (1:2) to a conventional treatment treated at physician's discretion (arm A), or to precision medicine (arm B).

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Gastric adenocarcinoma (GA) is a significant global health issue with poor prognosis, despite advancements in treatment. Although molecular classifications, such as The Cancer Genome Atlas (TCGA), provide valuable insights, their clinical utility remains limited. We performed a multi-layered functional analysis using TCGA RNA sequencing data to better define molecular subtypes and explore therapeutic implications.

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Pancreatic ductal adenocarcinoma (PDAC) is characterized by its poor prognosis. The current challenge remains the absence of predictive biomarkers. Cytokines are crucial factors in the pathogenesis and prognosis of PDAC.

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Context: DNA mismatch repair (MMR) deficiency (dMMR) testing is now recommended in endometrial cancer. Defect identification in the molecules participating in this pathway, or the presence of microsatellite instability, are commonly employed for this purpose. Novel methods are continuously evolving to report dMMR/microsatellite instability and to easily perform routine diagnoses.

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Article Synopsis
  • - Anticancer systemic therapy includes a diverse range of drugs, with new agents that have unique mechanisms of action challenging traditional classifications like chemotherapy and monoclonal antibodies.
  • - The proposed classification system categorizes these drugs based on two factors: where they act (tumor cells, blood vessels, immune system, endocrine system) and how they work (the specific molecular target).
  • - This approach aims to better understand and organize the growing complexity of cancer treatments to improve their effectiveness and application.
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Hepatocellular carcinoma (HCC) is the most common primary malignancy in the liver and is the third cause of cancer-related death worldwide. Surveillance with abdominal ultrasound should be offered to individuals at high risk for developing HCC. Accurate diagnosis, staging, and liver function are crucial when determining the optimal therapeutic approach.

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To describe the evolution of regorafenib use, since its approval, in patients with previously treated metastatic colorectal cancer (mCRC) in routine clinical practice in Spain. We extracted patient characteristics, dosing, safety and efficacy data for the Spanish cohorts of the CORRECT and CONSIGN trials, and the real-world CORRELATE study. The Spanish cohorts represented 10.

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Recently, global-scale efforts have been conducted for the electroreduction of CO as a potentially beneficial pathway for the conversion of greenhouse gases to useful chemicals and renewable fuels. This study focuses on the development of selective and sustainable electrocatalysts for the reduction of aqueous CO to CO. A Rucomplex [Ru(tptz)(ACN)Cl] (RCMP) (tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine, ACN = acetonitrile) was prepared as a molecular electrocatalyst for the CO reduction reaction in an aqueous solution.

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Background: The Colorectal Cancer Subtyping Consortium established four Consensus Molecular Subtypes (CMS) in colorectal cancer: CMS1 (microsatellite-instability [MSI], Immune), CMS2 (Canonical, epithelial), CMS3 (Metabolic), and CMS4 (Mesenchymal). However, only MSI tumour patients have seen a change in their disease management in clinical practice. This study aims to characterise the proteome of colon cancer CMS and broaden CMS's clinical utility.

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Article Synopsis
  • Angiosarcoma is a rare type of cancer that arises from the cells lining blood vessels, and current treatments for it are not very effective, making the search for new therapies important.
  • Researchers developed and studied cell line models in both 2D and 3D cultures to understand how the cancer cells grow and spread, proving these models useful for research in angiosarcoma.
  • A drug screening identified 8-amino adenosine as a promising candidate, showing effectiveness in reducing cell growth and invasion at low doses, but it didn't work better in combination with established cancer drugs like paclitaxel or gemcitabine.
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Background: has been implicated in hereditary colonic polyposis and colorectal carcinoma. However, there are conflicting data refgarding its relationship to hereditary breast cancer. Therefore, we aimed to assess if mutations contribute to breast cancer susceptibility.

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  • A proton exchange ionomer is crucial in polymer electrolyte membrane fuel cells (PEMFCs) as it serves as a proton conductor and binds nanocatalysts.
  • The drying temperature of membrane electrode assemblies (MEAs) affects the adsorption of sulfonates and the oxygen reduction reaction (ORR) kinetics at the cathode.
  • Higher intrinsic ORR activity can be achieved by addressing the blocking effects of sulfonate adsorption and PTFE, revealing opportunities for enhancing MEA preparation methods.
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The proteome characterization of complex, deteriorated, or cross-linked protein mixtures as paired clinical FFPE or exosome samples isolated from low plasma volumes (250 µL) might be a challenge. In this work, we aimed at investigating the benefits of FAIMS technology coupled to the Orbitrap Exploris 480 mass spectrometer for the TMT quantitative proteomics analyses of these complex samples in comparison to the analysis of protein extracts from cells, frozen tissue, and exosomes isolated from large volume plasma samples (3 mL). TMT experiments were performed using a two-hour gradient LC-MS/MS with or without FAIMS and two compensation voltages (CV = -45 and CV = -60).

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Article Synopsis
  • * The study compared different methods for determining MMR status, including immunohistochemistry (IHC), PCR-based microsatellite instability (MSI) analysis, and targeted genetic sequencing, using 126 early-stage EC samples.
  • * Results showed that over half of the samples were deficient in MMR, with inconsistencies noted among testing methods, particularly between IHC and MSI assessments, highlighting the need for further research to find the best testing approach.
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Background: Determining the risk of grade 3-5 toxicity and early death (ED) is important to plan chemotherapy in older adult patients with cancer. Our objective was to identify factors predicting these complications at the time of treatment initiation.

Methods: 234 patients aged ≥70 were subjected to a geriatric assessment and variables related to the tumor and the treatment were also collected.

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Background: The rising incidence of colorectal cancer (CRC) among young patients is alarming. We aim to characterize the clinico-pathological features and outcomes of patients with early-onset CRC (EOCRC), as well as the impacts of COVID-19 pandemic.

Methods: We included all patients with pathologically confirmed diagnoses of CRC at Hospital Universitario La Paz from October 2016 to December 2021.

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Background: Soft tissue sarcomas (STSs) are an uncommon and heterogeneous group of tumours. Several drugs and combinations have been used in clinical practice as second-line (2L) and third-line (3L) treatment. The growth modulation index (GMI) has previously been used as an exploratory efficacy endpoint of drug activity and represents an intra-patient comparison.

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The rate of CO formation from CO2 reduction on Pt(111) vicinal surfaces containing (100) steps, Pt(S)[n(111) × (100)], has been investigated using cyclic voltammetry. To obtain further information about the different roles of terrace and step atoms in this reaction, selective modification of step sites with either bismuth or copper has been performed. In this way, two different mechanistic regimes have been differentiated, depending on the potential range.

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Background: Anal squamous cell carcinoma (ASCC) is an infrequent tumor whose treatment has not changed since the 1970s. The aim of this study is the identification of biomarkers allowing personalized treatments and improvement of therapeutic outcomes.

Methods: Forty-six paraffin tumor samples from ASCC patients were analyzed by whole-exome sequencing.

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• This ESMO Clinical Practice Guideline provides key recommendations for using prognostic estimates in advanced cancer. • The guideline covers recommendations for patients with cancer and an expected survival of months or less. • An algorithm for use of clinical predictions, prognostic factors and multivariable risk prediction models is presented.

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Background: Liquid biopsies and the dynamic tracking of somatic mutations within circulating tumour DNA (ctDNA) can provide insight into the dynamics of cancer evolution and the intra-tumour heterogeneity that fuels treatment resistance. However, identifying and tracking dynamic changes in somatic copy number alterations (SCNAs), which have been associated with poor outcome and metastasis, using ctDNA is challenging. Pancreatic adenocarcinoma is a disease which has been considered to harbour early punctuated events in its evolution, leading to an early fitness peak, with minimal further subclonal evolution.

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Article Synopsis
  • Mixed pancreatic tumors that combine epithelial and mesenchymal components are rare and often invasive.
  • A unique case of a 72-year-old woman revealed a sarcomatous change in a residual intraductal papillary mucinous neoplasm (IPMN) without any invasive features.
  • Both tumor types in the case exhibited abnormal p53 protein expression and shared a specific mutation in the KRAS gene, with no signs of relapse after 6 months.*
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An autonomous electrochemical system prototype for ammonia oxidation reaction (AOR) measurements was efficiently done inside a 4'' x 4'' x 8'' 2U Nanoracks module at the International Space Station (ISS). This device, the Ammonia Electrooxidation Lab at the ISS (AELISS), included an autonomous electrochemical system that complied with NASA ISS nondisclosure agreements, power, safety, security, size constrain, and material compatibility established for space missions. The integrated autonomous electrochemical system was tested on-ground and deployed to the International Space Station as a "proof-of-concept" ammonia oxidation reaction testing space device.

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Colorectal cancer (CRC) is a molecular and clinically heterogeneous disease. In 2015, the Colorectal Cancer Subtyping Consortium classified CRC into four consensus molecular subtypes (CMS), but these CMS have had little impact on clinical practice. The purpose of this study is to deepen the molecular characterization of CRC.

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GATA4 and GATA6 are transcription factors involved in the differentiation and development of PDAC. GATA6 expression is related to the classic molecular subtype, while its absence is related to the basal-like molecular subtype. The aim was to determine the clinical utility of IHC determination of GATA4 and GATA6 in a series of patients with resected PDAC.

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