Publications by authors named "Borrego S"

Background: Despite the use of Next-Generation Sequencing (NGS) as the gold standard for the diagnosis of rare diseases, its clinical implementation has been challenging, limiting the cost-effectiveness of NGS and the understanding, control and safety essential for decision-making in clinical applications. Here, we describe a personalized NGS-based strategy integrating precision medicine into a public healthcare system and its implementation in the routine diagnosis process during a five-year pilot program.

Methods: Our approach involved customized probe designs, the generation of virtual panels and the development of a personalized medicine module (PMM) for variant prioritization.

View Article and Find Full Text PDF
Article Synopsis
  • * Research shows that NF1-null melanomas rely on RAS for growth, and using a MEK inhibitor like avutometinib alone can increase RAS signaling instead of decreasing it.
  • * Combining MEK inhibition with SOS1 suppression effectively reduces RAS activity, induces cancer cell death, and suppresses tumor growth, highlighting a new strategy for treating NF1-mutant melanoma.
View Article and Find Full Text PDF

Background: Biallelic variants in EYS are the major cause of autosomal recessive retinitis pigmentosa (arRP) in certain populations, a clinically and genetically heterogeneous disease that may lead to legal blindness. EYS is one of the largest genes (~ 2 Mb) expressed in the retina, in which structural variants (SVs) represent a common cause of disease. However, their identification using short-read sequencing (SRS) is not always feasible.

View Article and Find Full Text PDF
Article Synopsis
  • Hirschsprung's disease (HSCR) is a rare condition caused by the absence of enteric ganglia in the intestine, and its genetic basis is complex and not fully understood.
  • The study used a computational approach involving multi-omics analysis to identify potential disease-related genes and biomarkers, resulting in 178 new HSCR candidate genes and 12 key miRNAs with biomarker potential.
  • Findings suggest pathways and functions linked to HSCR, but further molecular experiments are necessary to confirm these results for clinical relevance.
View Article and Find Full Text PDF

Papillary thyroid carcinoma (PTC) is the most common histological category of thyroid cancer. In recent years, there has been an increasing number of studies on lncRNAs in PTC. Long intergenic non-protein coding RNA 887 (LINC00887) is a critical oncogene in developing other cancers.

View Article and Find Full Text PDF
Article Synopsis
  • Serous borderline tumors (SBT) are ovarian lesions generally associated with a good prognosis, but 10-15% can progress to low-grade serous cancer (LGSC), which is aggressive and resistant to standard chemotherapy.
  • The research uses a combination of spatial proteomics and transcriptomics to understand the transition from SBT to LGSC, identifying an intermediary stage with micropapillary features (SBT-MP) and increased MAPK signaling.
  • Key findings include the discovery of specific proteins and transcripts linked to tumor invasiveness, alongside a blueprint for future studies on tumorigenesis and potential new treatment approaches for ovarian cancer.
View Article and Find Full Text PDF

Inherited retinal dystrophies (IRDs) are a clinically and genetically heterogeneous group of disorders that often severely impair vision. Some patients manifest poor central vision as the first symptom due to cone-dysfunction, which is consistent with cone dystrophy (COD), Stargardt disease (STGD), or macular dystrophy (MD) among others. Here, we aimed to identify the genetic cause of autosomal dominant COD in one family.

View Article and Find Full Text PDF
Article Synopsis
  • Thyroid carcinoma (TC) includes two main types: medullary (MTC) and non-medullary (NMTC), with familial cases being rare, especially in MTC (less than 1%) and NMTC (3-9%).
  • A study analyzed the genetic data of 58 individuals from 18 Spanish families with familial NMTC and MTC, identifying 53 rare genetic variants in 12 families, some linked to known TC-associated genes.
  • The findings suggest potential new genes associated with TC and highlight biological processes important for cancer development, paving the way for early detection, personalized treatments, and improved patient care.
View Article and Find Full Text PDF

Introduction And Objectives: Genetic testing is becoming increasingly important for diagnosis and personalized treatments in aortopathies. Here, we aimed to genetically diagnose a group of acute aortic syndrome (AAS) patients consecutively admitted to an intensive care unit and to explore the clinical usefulness of AAS-associated variants during treatment decision-making and family traceability.

Methods: We applied targeted next-generation sequencing, covering 42 aortic diseases genes in AAS patients with no signs consistent with syndromic conditions.

View Article and Find Full Text PDF

Objectives: Congenital hypogonadotropic hypogonadism combined with anosmia or hyposmia is considered Kallmann syndrome (KS). It is often accompanied by bone defects.

Case Presentation: Here, we report a girl and her mother with KS caused by a novel mutation in the fibroblast growth factor receptor 1 gene ().

View Article and Find Full Text PDF

This study has as objectives to determine the concentration and diversity of the air- and dustborne mycobiota in seven National Archive of the Republic of Cuba repositories, and to assess the potential risk of biodeterioration that isolated taxa may have. In the indoor and outdoor environmental microbiological samplings a SAS biocollector was used and the indoor/outdoor (I/O) ratio was determined for each repository. The settled dust was collected during six months.

View Article and Find Full Text PDF

To enhance the use of Whole Genome Sequencing (WGS) in clinical practice, it is still necessary to standardize data analysis pipelines. Herein, we aimed to define a WGS-based algorithm for the accurate interpretation of variants in inherited retinal dystrophies (IRD). This study comprised 429 phenotyped individuals divided into three cohorts.

View Article and Find Full Text PDF

The frequent carriage of , including methicillin-resistant (MRSA), by wild animals along with its zoonotic potential poses a public health problem. Furthermore, the repeated detection of the A gene homologue, C, in wildlife raises the question whether these animals may be a reservoir for C-MRSA. Thus, we aimed to isolate and MRSA from wild rodents living in port areas and to characterize their antimicrobial resistance and genetic lineages.

View Article and Find Full Text PDF
Article Synopsis
  • Hirschsprung disease (HSCR) is a rare congenital disorder caused by incomplete gut colonization by enteric precursor cells, leading to issues in the development of the enteric nervous system (ENS).
  • The study explores the role of epigenetic mechanisms, particularly DNA methylation, and finds that HSCR patients exhibit lower global DNA methylation levels compared to healthy controls.
  • Identifying differentially methylated regions has unveiled new potential susceptibility genes for HSCR, emphasizing the importance of proper methylation patterns for ENS development.
View Article and Find Full Text PDF

Methionine (Met) is an essential amino acid and critical precursor to the cellular methyl donor S-adenosylmethionine. Unlike nontransformed cells, cancer cells have a unique metabolic requirement for Met and are unable to proliferate in growth media where Met is replaced with its metabolic precursor, homocysteine. This metabolic vulnerability is common among cancer cells regardless of tissue origin and is known as "methionine dependence", "methionine stress sensitivity", or the Hoffman effect.

View Article and Find Full Text PDF

This study shows that some species of fungi are affected by the magnetic field, which should be taken into account in studies of airborne fungal and air quality. The aim of this paper was to evaluate the effect of the oscillating magnetic field (OMF) on the behavior of colonies of three fungi genus growth in different culture mediums. The stains were: Aspergillus niger, Cladosporium cladosporioides and Penicillium citrinum and were inoculated in 90 mm Petri dishes with: Malt Extract Agar (MEA), Sabouraud Dextrose Agar (SDA) and Czapek-Dox Agar (CDA).

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on the increasing importance of long non-coding RNAs (lncRNAs) in cancer, particularly in medullary thyroid cancer (MTC), which is a rare type of thyroid cancer arising from specific hormone-secreting cells.
  • MTC can either be sporadic or associated with inherited syndromes like Multiple Endocrine Neoplasia type 2 (MEN2), linked to mutations in the RET proto-oncogene.
  • The research aims to validate previously identified lncRNAs (RMST, FTX, IPW, and RMRP) in a larger patient group, with preliminary results suggesting a potential role of these lncRNAs in the development of MTC.
View Article and Find Full Text PDF

The management of unsolved inherited retinal dystrophies (IRD) cases is challenging since no standard pipelines have been established. This study aimed to define a diagnostic algorithm useful for the diagnostic routine and to address unsolved cases. Here, we applied a Next-Generation Sequencing-based workflow, including a first step of panel sequencing (PS) followed by clinical-exome sequencing (CES) and whole-exome sequencing (WES), in 46 IRD patients belonging to 42 families.

View Article and Find Full Text PDF
Article Synopsis
  • * The study aims to understand the PAX6 interaction network, which is important for forming the enteric nervous system, by identifying direct gene targets and their networks that could influence susceptibility to HSCR.
  • * Key genes related to PAX6 were found, including those involved in the RET/GDNF/GFRA1 signaling pathway, enhancing our understanding of HSCR's genetic underpinnings and potentially informing future research on the disease.
View Article and Find Full Text PDF

Hirschsprung disease (HSCR, OMIM 142623) involves congenital intestinal obstruction caused by dysfunction of neural crest cells and their progeny during enteric nervous system (ENS) development. HSCR is a multifactorial disorder; pathogenetic variants accounting for disease phenotype are identified only in a minority of cases, and the identification of novel disease-relevant genes remains challenging. In order to identify and to validate a potential disease-causing relevance of novel HSCR candidate genes, we established a complementary study approach, combining whole exome sequencing (WES) with transcriptome analysis of murine embryonic ENS-related tissues, literature and database searches, in silico network analyses, and functional readouts using candidate gene-specific genome-edited cell clones.

View Article and Find Full Text PDF

The knowledge of the genetic variability of the local population is of utmost importance in personalized medicine and has been revealed as a critical factor for the discovery of new disease variants. Here, we present the Collaborative Spanish Variability Server (CSVS), which currently contains more than 2000 genomes and exomes of unrelated Spanish individuals. This database has been generated in a collaborative crowdsourcing effort collecting sequencing data produced by local genomic projects and for other purposes.

View Article and Find Full Text PDF
Article Synopsis
  • Hirschsprung disease (HSCR) is a genetic disorder characterized by a lack of nerve cells in the intestines, leading to intestinal problems caused by developmental changes in the Enteric Nervous System (ENS).
  • The study focused on analyzing long non-coding RNAs (lncRNAs) in enteric precursor cells from both control individuals and HSCR patients to explore their role in the disease's development.
  • The research identified three specific lncRNAs with varying transcript levels between the two groups, suggesting they could be regulatory elements involved in HSCR and serve as potential biomarkers for the condition.
View Article and Find Full Text PDF

The extensive use of insecticides for vector control has led to the development of insecticide resistance in Aedes aegypti populations on a global scale, which has significantly compromised control actions. Insecticide resistance, and its underlying mechanisms, has been investigated in several countries, mostly in South American and Asian countries. In Africa, however, studies reporting insecticide resistance are rare and data on resistance mechanisms, notably knockdown resistance (kdr) mutations, is scarce.

View Article and Find Full Text PDF

Background: Retinitis Pigmentosa (RP) is a clinically and genetically heterogeneous disorder that results in inherited blindness. Despite the large number of genes identified, only ~ 60% of cases receive a genetic diagnosis using targeted-sequencing. The aim of this study was to design a whole genome sequencing (WGS) based approach to increase the diagnostic yield of complex Retinitis Pigmentosa cases.

View Article and Find Full Text PDF