With the wide use of biomarkers to enable critical drug-development decisions, there is a growing concern from scientific community on the need for a 'standardized process' for ensuring biomarker specimen stability and hence, a strong desire to share best practices on preserving the integrity of biomarker specimens in clinical trials and the design of studies to evaluate analyte stability. By leveraging representative industry experience, we have attempted to provide an overview of critical aspects of biomarker specimen stability commonly encountered during clinical development, including: planning of clinical sample collection procedures, clinical site training, selection of sample preservation buffers, shipping logistics, fit-for-purpose stability assessments in the analytical laboratory and presentation of case studies covering widely utilized biomarker specimen types.
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http://dx.doi.org/10.4155/bio-2017-0009 | DOI Listing |
Ther Adv Neurol Disord
December 2024
Department of Biomedical Sciences, Humanitas University, Milan, Italy.
In multiple sclerosis (MS), increasing disability is considered to occur due to persistent, chronic inflammation trapped within the central nervous system (CNS). This condition, known as smoldering neuroinflammation, is present across the clinical spectrum of MS and is currently understood to be relatively resistant to treatment with existing disease-modifying therapies. Chronic active white matter lesions represent a key component of smoldering neuroinflammation.
View Article and Find Full Text PDFClin Appl Thromb Hemost
December 2024
Department of Hematology and Transfusion sciences, School of Allied Medical Sciences, Tehran University of Medical sciences, Tehran, Iran.
Objective: DNA methylation, as an epigenetic alteration, plays an essential role in the development of atherosclerosis and venous thrombosis. E-cadherin, a tumor suppressor gene and adhesion molecule, has a crucial function in platelet aggregation and hemostasis. P16, a cell cycle regulator, is involved in venous thrombosis.
View Article and Find Full Text PDFPathol Res Pract
December 2024
Department of Pathology, Oslo University Hospital, The Norwegian Radium Hospital, Oslo, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
Background: Patients with high-grade serous carcinoma (HGSC) are commonly diagnosed at late disease stages and after primary tumors have disseminated in the peritoneum. The overexpression of tight junction proteins has been associated with poor prognosis in this setting, potentially reflecting the tumor´s adaptive changes in the disease cascade.
Methods: By performing immunohistochemistry in a large single-center cohort of a total of 705 HGSC, we test the hypothesis that the protein expression of PReferentially expressed Antigen of MElanoma (PRAME) contains prognostic, predictive or clinically translatable information.
Pathol Res Pract
December 2024
Department of Pathology, University of California San Diego, San Diego, CA, USA. Electronic address:
Prolonged cold ischemia time (CIT) and neoadjuvant chemotherapy (NACT) can each independently impact the expression of breast cancer-related biomarkers, but their combined effects are not well studied. Herein, we assessed whether prolonged CIT has a higher modulatory effect on post-NACT biomarker expression in breast cancer specimens than in otherwise similar but non-NACT specimens. Our study cohort included 334 biopsy/resection breast cancer specimen pairs in which immunohistochemistry (IHC for estrogen receptor [ER], progesterone receptor [PR], HER2) and HER2 FISH had been performed on both specimens.
View Article and Find Full Text PDFBMC Complement Med Ther
December 2024
College of Medicine, University of Florida, Gainesville, FL, USA.
Background: As the primary cause of various preventable illnesses, smoking results in approximately five million premature deaths each year in the US and a multitude of adults living with serious illness. The majority of smokers know the health risks associated with smoking and intend to quit. However, quitting is very difficult partly because of insomnia and stress associated with it.
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