David Guerrero-Setas

Hospital Universitario de Navarra · Department of Pathology

Pancreatic ductal adenocarcinoma represents one of the solid tumors showing the worst prognosis worldwide, with a high recurrence rate after adjuvant or neoadjuvant therapy. Circulating tumor DNA analysis raised as a promising non-invasive tool to characterize tumor genomics and to assess treatment response. In this study, surgical tumor tissue and...

Background. Pancreatic ductal adenocarcinoma (PDAC) represents one of the worst prognostic cancers worldwide, with a high recurrence rate after adjuvant or neoadjuvant therapy (NAT). Circulating tumor DNA (ctDNA) analysis raised as a promising non-invasive tool to characterize tumor genomics and to assess treatment response. Methods. In this study,...

Biphasic papillary renal cell carcinoma (synonymous with biphasic squamoid alveolar renal cell carcinoma) is considered within the spectrum of papillary renal cell carcinoma (PRCC). With < 70 reported cases of biphasic PRCC, there is limited data on the pathologic spectrum and clinical course. Seventeen biphasic PRCC cases and 10 papillary adenomas...

Background Colon cancer (CC) is a heterogeneous disease that is categorized into four Consensus Molecular Subtypes (CMS) according to gene expression. Patients with loco-regional CC (stages II/III) lack prognostic factors, making it essential to analyze new molecular markers that can delineate more aggressive tumors. Aberrant methylation of genes t...

Background Testing for epidermal growth factor receptor (EGFR) mutations is an essential recommendation in guidelines for metastatic non-squamous non-small-cell lung cancer, and is considered mandatory in European countries. However, in practice, challenges are often faced when carrying out routine biomarker testing, including access to testing, in...

Abstract Background The American Heart Association recommends Life’s Simple 7 as ideal cardiovascular health (ICVH) to reduce cardiovascular risk. Rate advancement period (RAP), a useful tool to quantify and communicate exposure impact on risks, may enhance communication about the benefits of achieving ICVH. We aimed to examine whether greater adhe...

Molecular characterization of colorectal cancer has helped us understand better the biology of the disease. However, previous efforts have yet to provide significant clinical value in order to be integrated into clinical practice for patients with early-stage colon cancer (CC). The purpose of this study was to assess PD-L1, GLUT-1, e-cadherin, MUC2...

Triple-negative breast cancer (TNBC) is the most aggressive breast cancer (BC) subtype and lacks targeted treatment. It is diagnosed by the absence of immunohistochemical expression of several biomarkers, but this method still displays some interlaboratory variability. DNA methylome aberrations are common in BC, thereby methylation profiling could...

Background & objectives: Advances in predictive biomarkers for targeted therapy have increased therapeutic options in brain metastasis. We describe clinical-pathological features in CNS metastasis from lung carcinomas and compare the difference between their molecular profiles, if available. Methods:We performed a retrospective review of histologic...

Objective Despite significant progresses in imaging and pathological evaluation, early differentiation between benign and malignant biliary strictures remains challenging. Endoscopic retrograde cholangiopancreatography (ERCP) is used to investigate biliary strictures, enabling the collection of bile. We tested the diagnostic potential of next-gener...

Background: There is a patent need to better characterize early-stage colorectal cancer (CRC) patients. PD-1 ligand (PD-L1) expression has been proposed as a prognostic factor but yields mixed results in different settings. The Consensus Molecular Subtype (CMS) classification has yet to be integrated into clinical practice. We sought to evaluate t...

Simple Summary Cervical cancer (CC) is managed mainly using subjective and conventional methods. Research about the molecular mechanisms of micro-RNA-877-3p (miR-877-3p) in other cancer types revealed that it interacts with events that are important for CC. Our aim was to understand the role of miR-877-3p in CC. We observed that it was overexpresse...

The tumor-suppressor protein p16 is paradoxically overexpressed in cervical cancer (CC). Despite its potential as a biomarker, its clinical value and the reasons for its failure in tumor suppression remain unclear. Our purpose was to determine p16 clinical and biological significance in CC. p16 expression pattern was examined by immunohistochemistr...

Triple-negative breast cancer (TNBC) is the most aggressive breast cancer subtype and currently lacks any effective targeted therapy. Since epigenetic alterations are a common event in TNBC, DNA methylation profiling can be useful for identifying potential biomarkers and therapeutic targets. Here, genome-wide DNA methylation from eight TNBC and six...

Background & Objectives: Neoplasms with rhabdoid features (RF) have been reported in many sites. Gastrointestinal (GI) cancers with RF are extremely rare. Methods: We studied 9 GI carcinomas with RF. Clinicopathological and IHC analysis: cytokeratins, vimentin,myogenicmarkers, mismatch repair proteins (MMRp), CDX2, SMARCB1-INI1, p53, and Ki-67. KRA...

Introduction: Standard treatment of locally advanced rectal cancer (LARC) includes neoadjuvant chemo-radiotherapy followed by total mesorectal excision (TME). The role of KRAS as a biomarker in rectal cancer remains equivocal. We evaluate the Tumor Regression Grade (TRG), Relapse-Free Survival (RFS) and Overall Survival (OS) according to the KRAS o...

Aim: To evaluate the radiopotentiation of enzalutamide in human prostate cancer cells. Background: While radiotherapy is the first line of treatment for prostate cancer, androgen blockade therapies are demonstrating significant survival benefit as monotherapies. As androgen blockade can cause cell death by apoptosis, it is likely that androgen b...

Background & Objective: The link between the immune system and cancer is well known. Lymphocytes are the effector cells that mediate the immune response. The validity of the histological assessment of the tumour infiltrating lymphocytes (TILs) in cancer has been standardized by The International TILs Working group. The aim of the study was to analy...

Background & Objective: The link between the immune system and cancer is well known. Lymphocytes are the effector cells that mediate the immune response. The validity of the histological assessment of the tumour infiltrating lymphocytes (TILs) in cancer has been standardized by The International TILs Working group. The aim of the study was to analy...

Background & Objective: The assessment of estrogen receptor (ER), progesterone receptor (PR) or HER2 expression in breast cancer (BC) plays an important role in the choice of the neoadjuvant chemotherapy (NAC). There are no national guidelines regarding whether these biomarkers should be retested in the post-NAC residual tumour, what could be cruci...

Introduction Cervical cancer (CC) is the fourth most common cancer among women worldwide, with around 50% of mortality. Therefore, new prognostic biomarkers are necessary to improve its poor outcome. Micro-RNAs (miRs) are small non-coding RNAs, mainly associated with gene expression silencing, and deregulated in cancer. Our aim was to identify miRs...

Introduction Breast cancer (BC) is the most frequent neoplasia among women and one of the leading causes of cancer-related death worldwide. It is a clinically heterogeneous disease, with the triple negative (TN) as the most aggressive subtype. Epigenetic alterations are common molecular abnormalities in cancer, including changes in DNA methylation,...

While radiotherapy is the first line of treatment for prostate cancer, androgen blockade therapies are demonstrating significant survival benefit as monotherapies. As androgen blockade can cause cell death by apoptosis, it is likely that androgen blockade will potentiate the cytotoxic activities of radiotherapy. Here we tested the potential synergi...

The CHL1 gene encodes a cell-adhesion molecule proposed as being a putative tumour-suppressor gene in breast cancer (BC). However, neither the underlying molecular mechanisms nor the clinical value of CHL1 downregulation in BC has been explored. The methylation status of three CpG sites in the CHL1 promoter was analysed by pyrosequencing in neoplas...

Background Cadherin-like protein 22 (CDH22) is a transmembrane glycoprotein involved in cell-cell adhesion and metastasis. Its role in cancer is controversial because it has been described as being upregulated in colorectal cancer, whereas it is downregulated in metastatic melanoma. However, its status in breast cancer (BC) is unknown. The purpose...

We analysed the promoter methylation status of five genes, involved in adhesion (EPB41L3, TSLC-1), apoptosis (RASSF1, RASSF2) or angiogenesis (TSP-1), in intraoperative sentinel lymph node (SLN) biopsy samples from patients with breast cancer, that had been processed by the one-step nucleic acid amplification (OSNA) technique. SLN resection is perf...

Cervical cancer is the third most common cancer in women worldwide. The hypermethylation of P16, TSLC-1 and TSP-1 genes was analyzed in squamous cell carcinomas (SCC), cervical intraepithelial lesions (CIN) and adenocarcinomas (ADC) of the uterine cervix (total 181 lesions). Additionally human papillomavirus (HPV) type, EPB41L3, RASSF1 and RASSF2 h...

Myeloid-derived suppressor cells (MDSCs) differentiate from bone marrow precursors, expand in cancer-bearing hosts and accelerate tumor progression. MDSCs have become attractive therapeutic targets, as their elimination strongly enhances anti-neoplastic treatments. Here, immature myeloid dendritic cells (DCs), MDSCs modeling tumor-infiltrating subs...

Breast cancer is a heterogeneous disease that can be subdivided into clinical, histopathological and molecular subtypes (luminal Alike , luminal B-like/HER2-negative, luminal B-like/HER2-positive, HER2-positive, and triple-negative). The study of new molecular factors is essential to obtain further insights into the mechanisms involved in the tumor...

Breast cancer is a heterogeneous disease that can be subdivided into clinical, histopathological and molecular subtypes (luminal A-like, luminal B-like/HER2-negative, luminal B-like/HER2-positive, HER2-positive, and triple-negative). The study of new molecular factors is essential to obtain further insights into the mechanisms involved in the tumor...

Hypermethylation of tumor suppressor genes is one of the hallmarks in the progression of brain tumors. Our objectives were to analyze the presence of the hypermethylation of EPB41L3, RASSF2 and TSP-1 genes in 132 diffuse gliomas (astrocytic and oligodendroglial tumors) and in 10 cases of normal brain, and to establish their association with the pat...

Myeloid-derived suppressor cells (MDSCs) exhibit potent immunosuppressive activities in cancer. MDSCs infiltrate tumors and strongly inhibit cancer-specific cytotoxic T cells. Their mechanism of differentiation and identification of MDSC-specific therapeutic targets are major areas of interest. We have devised a highly efficient and rapid method to...

Efficacious anti-tumour vaccines need to strongly stimulate cancer-specific effector T cells and counteract the activity of tumour-infiltrating immunosuppressive cells. We hypothesised that combining cytokine expression with PD-L1 silencing could potentiate anti-cancer immune responses of lentivector vaccines. Thus, we engineered a collection of le...

The BJC is owned by Cancer Research UK, a charity dedicated to understanding the causes, prevention and treatment of cancer and to making sure that the best new treatments reach patients in the clinic as quickly as possible. The journal reflects these aims. It was founded more than fifty years ago and, from the start, its far-sighted mission was to...

Growing neoplasms employ various mechanisms to evade immunosurveillance. The expression of non-classical MHC class I molecules by both immune and malignant cells in the tumor microenvironment constitute of the strategies used by tumors to circumvent the cytotoxic activity of effector cells of the immune system. The overexpression of HLA-G, -E, and...

Since dendritic cells operate as professional antigen-presenting cells (APCs) and hence are capable of jumpstarting the immune system, they have been exploited to develop a variety of immunotherapeutic regimens against cancer. In the few past years, myeloid-derived suppressor cells (MDSCs) have been shown to mediate robust immunosuppressive functio...

Since dendritic cells operate as professional antigen-presenting cells (APCs) and hence are capable of jumpstarting the immune system, they have been exploited to develop a variety of immunotherapeutic regimens against cancer. In the few past years, myeloid-derived suppressor cells (MDSCs) have been shown to mediate robust immunosuppressive functio...

Since the first human gene therapy clinical trials were proven successful in 2000, human gene therapy has witnessed setbacks as well as encouraging progress. While these first clinical trials were performed with a γ-retrovirus vector to correct X-linked severe combined immunodeficiency (SCID-X1) in children, others since then have applied similar o...

Lichen sclerosus (LS) is a chronic inflammatory disease of the genital skin of unknown aetiology. The role of LS in penile squamous cell carcinogenesis is not well characterized. HPV has been implicated in both, as have epigenetic changes. The presence of HPV and hypermethylation of the MGMT, p16, RASSF1, RASSF2, TSLC1 and TSP1 genes were studied i...

Our work over the past eight years has focused on the use of HIV-1 lentiviral vectors (lentivectors) for the genetic modification of dendritic cells (DCs) to control their functions in immune modulation. DCs are key professional antigen presenting cells which regulate the activity of most effector immune cells, including T, B and NK cells. Their ge...