131 results match your criteria: "Research Institute - McGill University Health Centre[Affiliation]"

Article Synopsis
  • The study compared the combination of lenvatinib and pembrolizumab (len + pembro) with traditional chemotherapy for advanced or recurrent endometrial cancer (aEC) in patients who had not previously been treated.
  • Results showed that while len + pembro did not statistically outperform chemotherapy in terms of progression-free survival (PFS) or overall survival (OS), it offered similar outcomes, indicating noninferiority.
  • The trial involved 842 patients and found median PFS and OS were comparable between the two treatment groups, suggesting len + pembro could be an effective alternative to chemotherapy for this cancer type.
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Objectives: Part 1 of the RUBY trial (NCT03981796) demonstrated improved survival in patients with primary advanced or recurrent endometrial cancer (EC) treated with dostarlimab plus carboplatin-paclitaxel versus placebo plus carboplatin-paclitaxel. Here, we examine additional efficacy and safety data from patients with mismatch repair deficient/microsatellite instability-high (dMMR/MSI-H) EC in the RUBY trial.

Methods: Patients were randomized 1:1 to dostarlimab 500 mg or placebo plus carboplatin-paclitaxel every 3 weeks for 6 cycles followed by dostarlimab or placebo every 6 weeks for up to 3 years.

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Aim: To compare, in term-born children with cerebral palsy (CP), the characteristics of those who exhibit detectable risk factors for CP at birth with those who do not.

Method: This was a cross-sectional study of term-born children using the Canadian Cerebral Palsy Registry comparing those with and without perinatal risk factors and/or neonatal symptoms for pregnancy, birth and neonatal characteristics, magnetic resonance imaging (MRI) findings, CP subtype, and impairment severity. Risk factors were quantified with a CP risk calculator.

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Background: In Part 1 of the phase III RUBY trial (NCT03981796) in patients with primary advanced or recurrent endometrial cancer (EC), dostarlimab plus carboplatin-paclitaxel (CP) significantly improved progression-free survival and overall survival compared with CP alone. Limited safety data have been reported for the combination of immunotherapies plus chemotherapy in this setting.

Objectives: The objective of this analysis was to identify the occurrence of treatment-related adverse events (TRAEs) and immune-related adverse events (irAEs) and to describe irAE management in Part 1 of the RUBY trial.

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Article Synopsis
  • - The phase 3 study ENGOT-cx11/GOG-3047/KEYNOTE-A18 found that adding pembrolizumab to standard chemoradiotherapy significantly improved progression-free survival in patients with advanced cervical cancer during the first interim analysis.
  • - In this study, 1060 patients with high-risk cervical cancer were randomly assigned to receive either pembrolizumab or a placebo alongside chemoradiotherapy, with treatment outcomes evaluated at the second interim analysis.
  • - The primary outcomes measured were progression-free survival and overall survival, focusing on patient mortality, with safety being a secondary consideration.
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Background: Pembrolizumab plus chemotherapy provides clinically meaningful benefit as first-line therapy for advanced (locoregional extension and residual disease after surgery)/metastatic/recurrent mismatch repair-proficient (pMMR) and mismatch repair-deficient (dMMR) endometrial cancer, with greater magnitude of benefit in the dMMR phenotype. We evaluated the addition of pembrolizumab to adjuvant chemotherapy (with/without radiation therapy) among patients with newly diagnosed, high-risk endometrial cancer without any residual macroscopic disease following curative-intent surgery.

Methods: We included patients with histologically confirmed high-risk [International Federation of Gynecology and Obstetrics (FIGO) stage I/II of non-endometrioid histology or endometrioid histology with p53/TP53 abnormality, or stage III/IVA of any histology] endometrial cancer following surgery with curative intent and no evidence of disease postoperatively, with no prior radiotherapy or systemic therapy.

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BCG vaccination alters the epigenetic landscape of progenitor cells in human bone marrow to influence innate immune responses.

Immunity

September 2024

Committee on Immunology, University of Chicago, Chicago, IL, USA; Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, IL, USA; Department of Human Genetics, University of Chicago, Chicago, IL, USA; Committee on Genetics, Genomics, and Systems Biology, University of Chicago, Chicago, IL, USA. Electronic address:

Although the Bacille-Calmette-Guérin (BCG) vaccine is used to prevent tuberculosis, it also offers protection against a diverse range of non-mycobacterial infections. However, the underlying protective mechanisms in humans are not yet fully understood. Here, we surveyed at single-cell resolution the gene expression and chromatin landscape of human bone marrow, aspirated before and 90 days after BCG vaccination or placebo.

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Unlabelled: Escherichia coli that harbor the polyketide synthase (pks) genomic island produce colibactin and are associated with sporadic colorectal cancer development. Given the considerable prevalence of pks+ bacteria in healthy individuals, we sought to identify strategies to limit the growth and expansion of pks+ E. coli.

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Background: Rural persons with dementia face medical services gaps. This study compares the health service utilization of rural and urban community-dwelling individuals with incident dementia.

Methods: This study used a repeated annual cross-sectional cohort design spanning a period from 2000 to 2019 analyzing age-adjusted rates for 20 indicators of service use and mortality one year after diagnosis in Quebec administrative databases.

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Background: Viral infections can cause acute respiratory distress syndrome (ARDS), systemic inflammation, and secondary cardiovascular complications. Lung macrophage subsets change during ARDS, but the role of heart macrophages in cardiac injury during viral ARDS remains unknown. Here we investigate how immune signals typical for viral ARDS affect cardiac macrophage subsets, cardiovascular health, and systemic inflammation.

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Aims: To cope with homonegativity-generated stress, gay, bisexual and other men who have sex with men (GBM) use more mental health services (MHS) compared with heterosexual men. Most previous research on MHS among GBM uses data from largely white HIV-negative samples. Using an intersectionality-based approach, we evaluated the concomitant impact of racialization and HIV stigma on MHS use among GBM, through the mediating role of perceived discrimination (PD).

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Importance: Rapid tests for respiratory viruses, including multiplex panels, are increasingly available in emergency departments (EDs). Their association with patient outcomes remains unclear.

Objective: To determine if ED rapid respiratory virus testing in patients with suspected acute respiratory infection (ARI) was associated with decreased antibiotic use, ancillary tests, ED length of stay, and ED return visits and hospitalization and increased influenza antiviral treatment.

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Risk Factors and Outcomes for Cerebral Palsy With Hypoxic-Ischemic Brain Injury Patterns Without Documented Neonatal Encephalopathy.

Neurology

March 2024

From the Prenatal Pediatric Institute (O.F.), Children's National Hospital, Washington, DC; Departments of Pediatrics and Neurology/Neurosurgery (O.F., M.O., M.I.S.), McGill University; Research Institute-McGill University Health Centre (N.H., M.O., M.I.S.), Montreal, Quebec; Departments of Pediatrics and Clinical Neurosciences (A.K.); Alberta Children's Hospital Research Institute (A.K., M.D.); and Departments of Pediatrics and Community Health Sciences (M.D.), University of Calgary, Alberta.

Background And Objectives: Perinatal hypoxic-ischemic brain injury is a leading cause of term-born cerebral palsy, the most common lifelong physical disability. Diagnosis is commonly made in the neonatal period by the combination of neonatal encephalopathy (NE) and typical neuroimaging findings. However, children without a history of neonatal encephalopathy may present later in childhood with motor disability and neuroimaging findings consistent with perinatal hypoxic-ischemic injury.

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OMERACT Core outcome measurement set for shared decision making in rheumatic and musculoskeletal conditions: a scoping review to identify candidate instruments.

Semin Arthritis Rheum

April 2024

Faculty of Medicine and Health Sciences, School of Rehabilitation, Research Centre of the CHUS, CIUSSS de l'Estrie-CHUS, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada. Electronic address:

Objectives: Shared decision making (SDM) is a central tenet in rheumatic and musculoskeletal care. The lack of standardization regarding SDM instruments and outcomes in clinical trials threatens the comparative effectiveness of interventions. The Outcome Measures in Rheumatology (OMERACT) SDM Working Group is developing a Core Outcome Set for trials of SDM interventions in rheumatology and musculoskeletal health.

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Article Synopsis
  • In a study of 183 unvaccinated children hospitalized for COVID-19 pneumonia, 10.4% had autoantibodies that neutralized type I interferons (IFNs), specifically targeting IFN-α2 and IFN-ω in varying combinations.
  • Among the children with autoantibodies, 3.8% neutralized higher levels of IFN-α2, while the rest had lower neutralization capabilities, and some uninfected children also displayed similar antibodies.
  • The presence of these autoantibodies significantly increased the odds of developing severe COVID-19 pneumonia, particularly those neutralizing higher concentrations of IFN-α2 compared to those neutralizing IFN-ω.
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While the Bacille-Calmette-Guérin (BCG) vaccine is used to prevent tuberculosis, it also offers protection against a diverse range of non-mycobacterial infections. However, the underlying protective mechanisms in humans are not yet fully understood. Here, we surveyed at single-cell resolution the gene expression and chromatin landscape of human bone marrow, aspirated before and 90 days after BCG vaccination or placebo administration.

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From Mendel to mycoses: Immuno-genomic warfare at the human-fungus interface.

Immunol Rev

March 2024

Infectious Diseases - Hematology/Oncology/Transplant Clinical Program, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada.

Fungi are opportunists: They particularly require a defect of immunity to cause severe or disseminated disease. While often secondary to an apparent iatrogenic cause, fungal diseases do occur in the absence of one, albeit infrequently. These rare cases may be due to an underlying genetic immunodeficiency that can present variably in age of onset, severity, or other infections, and in the absence of a family history of disease.

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Article Synopsis
  • - HIV pre-exposure prophylaxis (PrEP) has been available in Québec since 2013, and a study evaluated its impact on HIV transmission among men who have sex with men (MSM) in Montreal from 2013 to 2021, using a mathematical model to analyze data.
  • - The results indicated that while annual HIV incidence decreased from 0.4 to 0.2 per 100 person-years during this period, PrEP coverage was initially very low but increased to 10% of HIV-negative MSM by 2020, leading to an estimated 20% reduction in HIV infections attributed to PrEP from 2015 to 2021.
  • - The study suggested that targeting PrEP to
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Article Synopsis
  • Arterial stiffness, measured by pulse wave velocity (PWV), is a key indicator of cardiovascular risk, but new devices for measuring PWV have varying accuracy, emphasizing the need for validation.
  • A Delphi technique was used to create a shared approach for validating noninvasive PWV measurement devices, involving global scientific societies focused on arterial stiffness.
  • The resulting recommendations aim to standardize the validation process for these devices, enhancing their reliability and practical use in clinical settings for assessing cardiovascular health in hypertensive individuals.
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Single-cell DNA sequencing-a potential dosimetric tool.

Radiat Prot Dosimetry

October 2023

Medical Physics Unit, McGill University, Montreal, Quebec, Canada.

We hypothesised that single-cell whole-genome sequencing has the potential to detect mutational differences in the genomes of the cells that are irradiated with different doses of radiation and we set out to test our hypothesis using in silico and in vitro experiments. In this manuscript, we present our findings from a Monte Carlo single-cell irradiation simulation performed in TOPAS-nBio using a custom-built geometric nuclear deoxyribonucleic acid (DNA) model, which predicts a significant dose dependence of the number of cluster damages per cell as a function of radiation dose. We also present preliminary experimental results, obtained from single-cell whole-genome DNA sequencing analysis performed on cells irradiated with different doses of radiation, showing promising agreement with the simulation results.

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Article Synopsis
  • EUS-CDS (endoscopic ultrasound-guided choledochoduodenostomy) was compared to ERCP-M (endoscopic retrograde cholangiopancreatography with metal stenting) for treating malignant distal biliary obstruction in a randomized controlled trial involving patients with specific cancer types.
  • The study found that EUS-CDS had a shorter procedure time and a high technical success rate (90.4%), comparable to ERCP-M (83.1%), with similar rates of stent dysfunction (9.6% vs 9.9%).
  • The results suggest that while EUS-CDS is not superior, it is a safe and efficient alternative to ERCP-M, advocating for its broader use in clinical settings.
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Background: Gliomas account for over two-thirds of all malignant brain tumors and have few established risk factors beyond family history and exposure to ionizing radiation. Importantly, recent studies highlighted the exposure to ultrafine particles (UFP) as a putative risk factor for malignant brain tumors.

Methods: Clinical and geographic data encompassing all provinces and territories from 1992 to 2010 was obtained from the Canadian Cancer Registry and Le Registre Québécois du Cancer.

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Article Synopsis
  • In utero exposure to maternal antibodies against fetal acetylcholine receptors can cause severe conditions like arthrogryposis multiplex congenita (AMC) and the milder fetal acetylcholine receptor inactivation syndrome (FARIS), but the full impact remains unclear.
  • A study of 46 cases reveals that many affected mothers did not have prior diagnoses of myasthenia gravis, suggesting underreporting and missed preventative measures.
  • Among the findings, significant long-term effects in surviving infants included various physical weaknesses, respiratory issues, and unexpected conditions like hearing loss; treatment with oral salbutamol showed promising improvement in symptoms for many children.
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