Background: Catastrophic disruptions in care delivery threaten the operational efficiency and potentially the validity of clinical research efforts, in particular randomized clinical trials. Most recently, the COVID-19 pandemic affected essentially all aspects of care delivery and clinical research conduct. While consensus statements and clinical guidance documents have detailed potential mitigation measures, few real-world experiences detailing clinical trial adaptations to the COVID-19 pandemic exist, particularly among, large, global registrational cardiovascular trials.
Methods: We outline the operational impact of COVID-19 and resultant mitigation measures in the Dapagliflozin Evaluation to Improve the LIVEs of Patients with Preserved Ejection Fraction Heart Failure (DELIVER) trial, one of the largest and most globally diverse experiences with COVID-19 of any cardiovascular clinical trial to date. Specifically, we address the needed coordination between academic investigators, trial leadership, clinical sites, and the supporting sponsor to ensure the safety of participants and trial staff, to maintain the fidelity of trial operations, and to prospectively adapt statistical analyses plans to evaluate the impact of COVID-19 and the pandemic at large on trial participants. These discussions included key operational issues such as ensuring delivery of study medications, adaptations to study visits, enhanced COVID-19 related endpoint adjudication, and protocol and analytical plan revisions.
Conclusion: Our findings may have important implications for establishing consensus on prospective contingency planning in future clinical trials.
Clinicaltrial: gov: NCT03619213.
Clinicaltrial: GOV: NCT03619213.
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http://dx.doi.org/10.1016/j.ahj.2023.05.013 | DOI Listing |
Alzheimers Dement
December 2024
School of Pharmacy, Chapman University, Irvine, CA, USA.
Background: Although novel treatments for Alzheimer's disease (AD) have begun to show modest therapeutic effects, agents that target hallmark AD pathology and offer neuroprotection are desired. Erythropoietin (EPO) is a glycoprotein hormone with neuroprotective effects but is faced with challenges including limited brain uptake and increased hematopoietic side effects with long-term dosing. Therefore, EPO has been modified and bound to a chimeric transferrin receptor monoclonal antibody (cTfRMAb); the latter shuttles EPO past the blood-brain barrier (BBB) into brain parenchyma and reduces its plasma exposure and potential for side effects.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Columbia University Irving Medical Center, New York, NY, USA.
Background: Genetic studies indicate a causal role for microglia, the innate immune cells of the central nervous system (CNS), in Alzheimer's disease (AD). Despite the progress made in identifying genetic risk factors, such as CD33, and underlying molecular changes, there are currently limited treatment options for AD. Based on the immune-inhibitory function of CD33, we hypothesize that inhibition of CD33 activation may reverse microglial suppression and restore their ability to resolve inflammatory processes and mitigate pathogenic amyloid plaques, which may be neuroprotective.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Shoolini University, Solan, Himachal Pradesh, India.
Background: Alzheimer's disease (AD) is a complex neurodegenerative disorder characterized by progressive cognitive decline, neuroinflammation, and mitochondrial dysfunction. In Alzheimer's, abnormal Mitochondrial Permeability Transition Pore (mPTP) activity may contribute to mitochondrial dysfunction and neuronal damage. Withanolide A, a naturally occurring compound derived from Withania somnifera, have shown potential neuroprotective effects in various neurological disorders.
View Article and Find Full Text PDFBackground: Previously, we demonstrated therapeutic benefits following intraperitoneal delivery of the TGR5 agonist HY209 in 5xFAD, a transgenic mouse model of Alzheimer's Disease (AD). Given the desirability of a more acceptable administration route for prolonged AD treatment, we assessed the efficacy of HY209 via oral delivery. This study aims to elucidate the therapeutic potential of NuCerin, an oral formulation of HY209, in the aforementioned AD model, while simultaneously identifying potential blood biomarkers indicative of NuCerin's therapeutic action.
View Article and Find Full Text PDFBackground: Positive findings from testing therapeutics in AD animal models are often not translated to effective treatments due to the poor methodological rigor and inadequate reporting practices of therapeutic efficacy studies. The Alzheimer's Disease Preclinical Efficacy Database (AlzPED), developed by the NIA, is a searchable and publicly available knowledgebase that prioritizes and promotes the use of rigorous methodology to ameliorate this translation gap. Through a checklist of experimental design elements - the Rigor Report Card - AlzPED highlights reporting recommendations and standards while providing a practical tool to help plan rigorous therapeutic studies in animals.
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