336 results match your criteria: "University Surgical Cluster[Affiliation]"

Unveiling the prognostic significance of malignant ascites in advanced gastrointestinal cancers: a marker of peritoneal carcinomatosis burden.

Ther Adv Med Oncol

November 2024

Medical Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori, Via G.Venezian, 1, Milan 20133, Italy.

Article Synopsis
  • Ascites is a common issue in patients with advanced gastrointestinal cancers that have spread to the peritoneum, impacting survival negatively; this study is the first to look specifically at ascites, peritoneal metastases (PM), and survival in metastatic colorectal cancer (mCRC) and metastatic gastric cancer (mGC).
  • A retrospective analysis of clinical trial data showed that mCRC patients with ascites had significantly shorter progression-free and overall survival compared to those without PM, while gastric cancer patients with ascites also had poorer survival outcomes and higher disease severity scores.
  • The findings suggest that ascites can indicate worse prognoses for certain cancer patients, highlighting the need for more focused research and tailored treatments for these individuals.
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Low molecular weight heparin use and thrombotic complications in upper gastrointestinal resection for malignancy in a multi-ethnic Asian population.

Asian J Surg

October 2023

University Surgical Cluster, National University Hospital, Singapore; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Article Synopsis
  • The study examines the impact of low molecular weight heparin (LMWH) on venous thromboembolic (VTE) and bleeding events in Asian patients after major surgery for upper gastrointestinal malignancies.
  • It included data from 399 patients over a decade in Singapore, finding that while LMWH did not significantly reduce VTE incidents, it was linked to a higher rate of postoperative bleeding.
  • The conclusion suggests that routine use of LMWH is not recommended for Asian patients undergoing these surgical procedures due to the increased risk of bleeding without substantial benefits in VTE prevention.
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Background: Metabolic surgery is recognized for its effectiveness in weight loss and improving outcomes for individuals with type 2 diabetes mellitus (T2DM). However, its impact on renal function, especially in multi-ethnic Asian populations, remains underexplored. This study investigates mid- and long-term renal outcomes following metabolic surgery in Asian patients with T2DM.

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Article Synopsis
  • Elevated mammographic density (MD) is a significant risk factor for breast cancer, and this study investigates how factors like childbirth, age at first birth, and breastfeeding relate to MD in a large group of women across different countries.
  • The research analyzed data from 11,755 women aged 35-85 years, focusing on how factors such as the number of births and the timing of the first birth influence measurements of MD.
  • The findings suggest that having more children decreases MD, while older age at first birth is linked to higher MD, particularly in post-menopausal women, highlighting the complex relationships between reproductive factors and breast density.
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An isoform-resolution transcriptomic atlas of colorectal cancer from long-read single-cell sequencing.

Cell Genom

September 2024

Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore; NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore. Electronic address:

Article Synopsis
  • * This study combined short- and long-read scRNA-seq to create a detailed transcriptomic atlas of CRC, revealing 394 dysregulated transcript structures and identifying specific genes and isoforms linked to different tumor cell subpopulations with varied prognoses.
  • * An algorithm was developed to link novel peptides from these recurrent tumor-specific transcripts with mass spectrometry data, leading to the discovery of recurring neoepitopes that could potentially inform the creation of new cancer vaccines.
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Article Synopsis
  • Idiopathic granulomatous mastitis (IGM) is a rare breast condition marked by chronic inflammation and unclear causes.
  • Whole-exome sequencing (WES) was used to analyze genetic data from eight patients, but no definitive genetic factors were linked to IGM.
  • The study revealed discrepancies in variant calling and significant genetic diversity, suggesting that the genetic causes of IGM are complex and still poorly understood.
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Background: Hepatocellular carcinoma (HCC) is a deadly cancer with a high global mortality rate, and the downregulation of GATA binding protein 4 (GATA4) has been implicated in HCC progression. In this study, we investigated the role of GATA4 in shaping the immune landscape of HCC.

Methods: HCC tumor samples were classified into "low" or "normal/high" based on GATA4 RNA expression relative to adjacent non-tumor liver tissues.

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Spatially Resolved Niche and Tumor Microenvironmental Alterations in Gastric Cancer Peritoneal Metastases.

Gastroenterology

December 2024

Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Haematology-Oncology, National University Cancer Institute, Singapore; Cancer and Stem Cell Biology Program, Duke-NUS Medical School, Singapore; Singapore Gastric Cancer Consortium, Singapore, Singapore; The N.1 Institute for Health, National University of Singapore, Singapore. Electronic address:

Article Synopsis
  • The study investigates the genetic and environmental factors that lead to peritoneal metastasis (PM) in gastric cancer (GC), which typically has a poor prognosis.
  • Researchers conducted a detailed analysis of samples from 326 patients, looking at various genetic and expression changes in tumors and their surroundings.
  • Findings revealed specific genetic mutations and tumor microenvironment characteristics that enhance the risk of PM, along with potential therapeutic targets to improve treatment strategies for patients with GC.
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Background: Pleomorphic xanthoastrocytoma (PXA) is a rare brain tumor that accounts for <1% of all gliomas. An in-depth understanding of PXA's molecular makeup remains a work in progress due to its limited numbers globally. Separately, spontaneous intracranial hemorrhage (pICH) is an uncommon but potentially devastating emergency in young children, often caused by vascular malformations or underlying hematological conditions.

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Purpose: To assess the association of a polygenic risk score (PRS) for functional genetic variants with the risk of developing breast cancer.

Methods: Summary data-based Mendelian randomization (SMR) and heterogeneity in dependent instruments (HEIDI) were used to identify breast cancer risk variants associated with gene expression and DNA methylation levels. A new SMR-based PRS was computed from the identified variants (functional PRS) and compared to an established 313-variant breast cancer PRS (GWAS PRS).

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Purpose: The major aim of our meta-analysis was to review the effectiveness of various treatment modalities for achieving successful remission and preventing recurrence for women with idiopathic granulomatous mastitis (IGM). This knowledge is instrumental in developing evidence-based guidelines for clinicians to improve management strategies and outcomes for patients with IGM.

Methods: A systematic literature search was performed on MEDLINE (Ovid), Embase (Elsevier), PubMed, Cochrane Library, Web of Science, and Google Scholar; studies published to 19 January 2022 were included.

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A multimodal atlas of hepatocellular carcinoma reveals convergent evolutionary paths and 'bad apple' effect on clinical trajectory.

J Hepatol

October 2024

Program in Clinical and Translational Liver Cancer Research, Division of Medical Science, National Cancer Center Singapore, Republic of Singapore; Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital and National Cancer Centre Singapore, Republic of Singapore; SingHealth-Duke-NUS Academic Surgery Program, Duke-NUS Graduate Medical School, Singapore 169857, Republic of Singapore. Electronic address:

Article Synopsis
  • Hepatocellular carcinoma (HCC) is a dangerous type of cancer that is different inside each tumor, making it hard to treat.
  • Researchers studied over 600 samples from 123 patients to understand how this cancer develops and progresses.
  • They discovered that the most aggressive cells in a tumor are the best way to predict how well a patient will do, not just by looking at how different the tumor cells are from each other.
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Background: Emphysematous pyelonephritis (EPN) is a necrotizing infection of the kidney and the surrounding tissues associated with considerable mortality. We aimed to formulate a score that classifies the risk of mortality in patients with EPN at hospital admission.

Materials And Methods: Patients diagnosed with EPN between 2013 and 2020 were retrospectively included.

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In living-donor liver transplantation, biliary complications including bile leaks and biliary anastomotic strictures remain significant challenges, with incidences varying across different centers. This multicentric retrospective study (2016-2020) included 3633 adult patients from 18 centers and aimed to identify risk factors for these biliary complications and their impact on patient survival. Incidences of bile leaks and biliary strictures were 11.

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Introduction: Parathyroid carcinoma is a rare malignant endocrine tumor that is usually associated with primary hyperparathyroidism. The coexistence of parathyroid carcinoma and renal hyperparathyroidism is a rare phenomenon. Hence, we present a case of parathyroid carcinoma in a patient with tertiary hyperparathyroidism.

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A systematic review and meta-analysis of mediastinoscopy-assisted transhiatal esophagectomy (MATHE).

Surg Oncol

April 2024

Upper Gastrointestinal Surgery, National University Hospital, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Background: Transhiatal esophagectomy (THE) avoids thoracotomy but sacrifices mediastinal lymphadenectomy. Mediastinoscopy-assisted transhiatal esophagectomy (MATHE) allows for visualisation and en-bloc dissection of mediastinal lymph nodes while retaining the benefits of THE. However, given its novel inception, there is a paucity of literature.

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Alterations to DNA methylation patterns induced by chemotherapy treatment are associated with negative impacts on the olfactory pathway.

Breast Cancer Res

November 2023

Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR), 60 Biopolis Street, Genome, Singapore, 138672, Republic of Singapore.

Background: Exposure to cytotoxic chemotherapy treatment may alter DNA methylation (DNAm) in breast cancer patients.

Methods: We performed DNAm analysis in 125 breast cancer patients with blood drawn before and after chemotherapy, using the Illumina MethylationEPIC array. DNAm changes of 588,798 individual CpGs (including 41,207 promoter regions) were evaluated using linear regression models adjusted for monocyte proportion.

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Background: The conventional approach to treatment for Paget's disease of the breast has been mastectomy, but there is an increasing trend to consider breast-conserving surgery (BCS) followed by radiotherapy (RT) in these patients. This study aimed to provide an updated systematic review and meta-analysis comparing outcomes after BCS with RT versus mastectomy in the treatment of Paget's disease of the breast.

Methods: Studies before May 2021 were included.

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Importance: Emerging data suggest that the incidence of early-onset cancers, defined as cancers diagnosed in people younger than 50 years, is increasing, but updated data are limited.

Objective: To characterize the patterns in the incidence of early-onset cancers in the US from 2010 to 2019 and provide granular data on the cancers with the fastest-growing incidence rates.

Design, Setting, And Participants: This population-based cohort study analyzed data from 17 National Cancer Institute Surveillance, Epidemiology, and End Results registries from January 1, 2010, to December 31, 2019.

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Advances in sequencing have revealed a highly variegated landscape of mutational signatures and somatic driver mutations in a range of normal tissues. Normal tissues accumulate mutations at varying rates ranging from 11 per cell per year in the liver, to 1879 per cell per year in the bladder. In addition, some normal tissues are also comprised of a large proportion of cells which possess driver mutations while appearing phenotypically normal, as in the oesophagus where a majority of cells harbour driver mutations.

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Objective: To define benchmark values for adult-to-adult living-donor liver transplantation (LDLT).

Background: LDLT utilizes living-donor hemiliver grafts to expand the donor pool and reduce waitlist mortality. Although references have been established for donor hepatectomy, no such information exists for recipients to enable conclusive quality and comparative assessments.

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Background: Spinal arachnoid cysts are relatively uncommon, cerebrospinal fluid-filled sacs formed by arachnoid membranes that can be either idiopathic or acquired. The neurological presentation of these cysts is varied. Advances in imaging techniques have allowed an improved characterization of these entities and excluded other possible causes of clinical manifestation.

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