Publications by authors named "Hamilton-Dutoit S"

Article Synopsis
  • Advances in treating classic Hodgkin lymphoma (cHL) have led to an 80% overall survival rate, but survivors face risks of long-term complications like cardiac and pulmonary issues.
  • Research using advanced protein analysis compared samples from cHL patients with and without bleomycin-induced pulmonary toxicity (BPT), revealing distinct protein expression and disrupted pathways linked to BPT risk.
  • Key proteins like JAK3, BID, and MMP9 were found at different levels in patients with BPT, indicating that certain protein profiles in biopsies might predict poorer survival outcomes in these individuals.
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Follicular lymphoma (FL) is the most common low-grade lymphoma. Despite its indolent nature, FL carries an inherent risk of histological transformation (HT) to a more aggressive lymphoma. Existing biomarkers are insufficient to predict HT, indicating the need for more robust biological predictors.

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Follicular lymphoma (FL) presents significant clinical heterogeneity, with some patients experiencing transformation into an aggressive disease, a key contributor to FL-related mortality. Based on gene expression profiles, this study aimed to provide insights into immunological differences associated with transformation. Gene expression analysis using the NanoString nCounter Tumor Signaling 360 Panel was performed on diagnostic lymphoma samples from 70 FL patients diagnosed in the rituximab era, either non-transforming FL (nt-FL, n = 34) or subsequently transforming FL (st-FL, n = 36), with paired high-grade transformed FL (tFL, n = 36) samples available.

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Follicular lymphoma (FL) is characterized by an indolent nature and generally favorable prognosis, yet poses a particular clinical challenge, since disease progression is observed in a notable subset of patients. Currently, it is not possible to anticipate which patients will be at risk of progression, highlighting the need for reliable predictive biomarkers that can be detected early in the disease. We applied tandem-mass-tag labelled nano-liquid chromatography tandem mass spectrometry (nLC-MS/MS) on 48 diagnostic formalin-fixed, paraffin-embedded tumor samples from patients with advanced-stage FL.

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Classic Hodgkin lymphoma (CHL) is a highly curable disease, even in advanced stages. Controversy remains over whether bone involvement negatively affects overall and progression-free survival in patients treated with intensive chemotherapy regimens. Whether cases that present with bone lesions harbor specific tumor microenvironmental features is unknown.

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Article Synopsis
  • The study aimed to explore whether certain genetic variants (SNPs) related to taxane chemotherapy affect breast cancer patients' need for social benefits after treatment.
  • Researchers analyzed data from premenopausal women diagnosed with breast cancer, focusing on their receipt of health and labor market-related benefits over a five-year period.
  • The findings indicated that there was no significant link between the selected SNPs and the likelihood of receiving social benefits post-chemotherapy.
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  • Individuals with HIV have a heightened risk of developing lymphoma, a significant cause of death, but the genetic factors involved are not well understood.
  • Researchers performed next-generation sequencing on lymphoma biopsies from 18 HIV-infected patients to analyze the genetic mutations present in these tumors.
  • The study revealed a diverse range of 213 genetic variants across the lymphomas, with no consistent mutations shared among all cases, indicating complex genetic heterogeneity in HIV-associated lymphomas.
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Follicular lymphoma (FL) exhibits considerable variability in biological features and clinical trajectories across patients. To dissect the diversity of FL, we utilized a Bernoulli mixture model to identify genetic subtypes in 713 pre-treatment tumor tissue samples. Our analysis revealed the existence of five subtypes with unique genetic profiles that correlated with clinicopathological characteristics.

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Background & Aims: Cognitive dysfunction is an increasingly recognised manifestation of metabolic dysfunction-associated steatotic liver disease (MASLD), but the mechanistic link remains unclear. The aim of this study was to investigate the hypothesis that experimental MASLD leads to cognitive dysfunction via systemic inflammation and neuroinflammation.

Methods: Twenty male Sprague Dawley rats were randomised to a high-fat high-cholesterol (HFHC) diet to induce MASLD, or a standard diet (n = 10/group), for 16 weeks.

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Background: The prognostic role of resection margin status following total (TP) and distal (DP) pancreatectomy for pancreatic ductal adenocarcinoma (PDAC) is insufficiently evaluated. In Denmark, pancreatic surgery, including the postoperative pathological examination of the resection specimens, is confined to four centres, all reporting to the Danish Pancreatic Cancer Database (DPCD). In this Danish population-based nationwide study on TP and DP for PDAC from 2015-2019, based on data from DPCD, we evaluated whether there is a prognostically relevant minimum margin clearance definition and whether certain margins hold independent prognostic information.

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A patient was admitted to hospital with splenic rupture, four 4 days after colonoscopy was performed following one month's intermittent and aggravating abdominal pain. During recovery from splenectomy, the patient developed sudden tachycardic and tachypnoea. A blood sample revealed a very low blood glucose, high lactate and acidaemia.

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Background: In this Danish nationwide population-based study, we evaluated the prognostically relevant minimum tumour-free margin width following pancreaticoduodenectomy (PD) for ampullary adenocarcinoma (AAC) and evaluated whether certain margins hold independent prognostic information.

Methods: We included 128 patients who underwent PD for AAC from 2015 to 2019. Clinical and pathological data including well-known prognostic factors were retrieved from the Danish Pancreatic Cancer Database.

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Follicular lymphoma (FL) is an indolent lymphoma with a generally favorable prognosis. However, histological transformation (HT) to a more aggressive disease leads to markedly inferior outcomes. This study aims to identify biological differences predictive of HT at the time of initial FL diagnosis.

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Background: Quantitative polymerase chain reaction (qPCR) for Epstein-Barr virus (EBV)-DNA is an important diagnostic tool for EBV-associated disease, but interpretation of its clinical significance is challenging.

Objectives: We assessed the diagnostic and clinical performance of WHO-standardised qPCR for EBV-DNA (WHO EBV-qPCR) in plasma and whole blood (WB) for proven EBV disease in a prospectively accrued patient cohort.

Study Design: Central Denmark Region patients, tested with WHO EBV-qPCR from November 2017 to March 2019, were screened for EBV disease.

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Post-transplant lymphoproliferative disorders (PTLD) are iatrogenic immune deficiency-associated lymphoid/plasmacytic proliferations developing due to immunosuppression in solid organ or hematopoietic stem cell allograft patients. PTLD are characterized by abnormal proliferation of lymphoid cells and have a heterogeneous clinical behavior. We profiled expression of >700 tumor microenvironment (TME)-related genes in 75 post-transplant aggressive B-cell lymphomas (PTABCL).

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Background: In this nationwide population-based cohort study, we investigated the overall minimum margin width that is independently associated with improved survival following pancreaticoduodenectomy (PD) for pancreatic ductal adenocarcinoma (PDAC) and evaluated whether certain margins or surfaces hold independent prognostic significance.

Methods: Data from 367 patients who underwent PD for PDAC in the period 2015-2019 were retrieved from the Danish Pancreatic Cancer Database. Missing data were obtained by review of pathology reports and re-microscopy of resection specimens.

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Article Synopsis
  • Follicular lymphoma (FL) is a slow-growing cancer that can sometimes become more aggressive, leading to higher mortality risks for patients, especially due to early progression or histological transformation (HT).
  • The study investigated the expression levels of an immunoinhibitory molecule called indoleamine 2,3-dioxygenase 1 (IDO1) in tissue samples from FL patients, comparing those whose disease remained stable and those who experienced transformation.
  • Although no significant differences in IDO1 levels were found between the groups, high expression was noted in all samples, suggesting that IDO1 may be targeted in future therapies, especially as it correlates with another immune checkpoint, PD-1.
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Introduction: Programmed cell death ligand-1 (PD-L1) expression may help identify patients with non-small cell lung cancer (NSCLC) who would benefit from immunotherapy. We assessed PD-L1 expression, and epidermal growth factor receptor (EGFR) and V-Ki-Ras2 Kirsten rat sarcoma (KRAS) mutations in NSCLC patients receiving adjuvant chemotherapy.

Methods: Data for stage IB/II/IIIA NSCLC patients (diagnosed: 2001-2012) were retrieved from Danish population-based registries.

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Purpose: Breast cancer treatment is associated with adverse effects, which may delay return-to-work. Single nucleotide polymorphisms (SNPs) may influence the risk and severity of treatment toxicities, which in turn could delay return-to-work. We examined the association of 26 SNPs with return-to-work in premenopausal women with breast cancer.

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Background: Increasing incidence of non-alcoholic fatty liver disease (NAFLD) calls for improved understanding of how the disease affects metabolic liver function.

Aims: To investigate in vivo effects of different NAFLD stages on metabolic liver function, quantified as regional and total capacity for galactose metabolism in a NAFLD model.

Methods: Male Sprague Dawley rats were fed a high-fat, high-cholesterol diet for 1 or 12 weeks, modelling early or late NAFLD, respectively.

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Inflammation and metabolic dysfunction are hallmarks of the progression of non-alcoholic fatty liver disease (NAFLD), which is the fastest-growing liver disease worldwide. Emerging evidence indicates that innate immune mechanisms are essential drivers of fibrosis development in chronic inflammatory liver diseases, including NAFLD. In this study, 142 NAFLD patients were genotyped for three IFNL4 single-nucleotide variants in order to investigate the genetic relationship between IFNL4 and fibrosis in NAFLD patients.

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Purpose: Taxane-based chemotherapy is the primary treatment for premenopausal breast cancer. Although being inconsistent, research suggests that variant alleles alter pharmacokinetics through reduced function of OATP transporters (limiting hepatic uptake), CYP-450 enzymes (hampering drug metabolism), and ABC transporters (decreasing clearance). Reduced function of DNA repair enzymes may hamper effectiveness through dose-limiting toxicities.

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