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White SK, Walker BS, Schmidt RL, Metcalf RA. The incidence of transfusion-related acute lung injury using active surveillance: A systematic review and meta-analysis. Transfusion 2024; 64:289-300. [PMID: 38116828 DOI: 10.1111/trf.17688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 11/30/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND Transfusion-related acute lung injury (TRALI) is a leading cause of transfusion-related mortality. A concern with passive surveillance to detect transfusion reactions is underreporting. Our aim was to obtain evidence-based estimates of TRALI incidence using meta-analysis of active surveillance studies and to compare these estimates with passive surveillance. STUDY DESIGN AND METHODS We performed a systematic review and meta-analysis of studies reporting TRALI rates. A search of Medline and Embase by a research librarian identified studies published between January 1, 1991 and January 20, 2023. Prospective and retrospective observational studies reporting TRALI by blood component (red blood cells [RBCs], platelets, or plasma) were identified and all inpatient and outpatient settings were eligible. Adult and pediatric, as well as general and specific clinical populations, were included. Platelets and plasma must have used at least one modern TRALI donor risk mitigation strategy. A random effects model estimated TRALI incidence by blood component for active and passive surveillance studies and heterogeneity was examined using meta-regression. RESULTS Eighty studies were included with approximately 176-million blood components transfused. RBCs had the highest number of studies (n = 66) included, followed by platelets (n = 35) and plasma (n = 34). Pooled TRALI estimates for active surveillance studies were 0.17/10,000 (95% confidence intervals [CI]: 0.03-0.43; I2 = 79%) for RBCs, 0.31/10,000 (95% CI: 0.22-0.42; I2 = <1%) for platelets, and 3.19/10,000 (95% CI: 0.09-10.66; I2 = 86%) for plasma. Studies using passive surveillance ranged from 0.02 to 0.10/10,000 among the various blood components. DISCUSSION In summary, these estimates may improve a quantitative understanding of TRALI risk, which is important for clinical decision-making weighing the risks and benefits of transfusion.
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Affiliation(s)
- Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | | | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
- ARUP Laboratories, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
- ARUP Laboratories, Salt Lake City, Utah, USA
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2
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Karafin MS, DeSimone RA, Dvorak J, Metcalf RA, Pagano MB, Park YA, Schwartz J, Souers RJ, Szczepiorkowski ZM, Uhl L, Ramsey G. Antibody Titers in Transfusion Medicine: A Critical Reevaluation of Testing Accuracy, Reliability, and Clinical Use. Arch Pathol Lab Med 2023; 147:1351-1359. [PMID: 36730468 DOI: 10.5858/arpa.2022-0248-cp] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 02/04/2023]
Abstract
CONTEXT.— Substantial variability between different antibody titration methods has been identified since the development and introduction of the uniform procedure in 2008. OBJECTIVE.— To determine whether more recent methods or techniques decrease interlaboratory and intralaboratory variation measured using proficiency testing. DESIGN.— Proficiency test data for antibody titration between 2014 and 2018 were obtained from the College of American Pathologists. Interlaboratory and intralaboratory variations were compared by analyzing the distribution of titer results by method and phase, comparing the results against the supplier's quality control titer, and by evaluating the distribution of paired titer results when each laboratory received a sample with the same titer twice. RESULTS.— A total of 1337 laboratories participated in the antibody titer proficiency test during the study period. Only 54.1% (5874 of 10 852) of anti-D and 63.4% (3603 of 5680) of anti-A reported responses were within 1 titer of the supplier's intended result. Review of the agreement between laboratories of the same methodology found that 78.4% (3139 of 4004) for anti-A and 89.0% (9655 of 10 852) of laboratory responses for anti-D fell within 1 titer of the mode response. When provided with 2 consecutive samples of the same titer (anti-D titer: 16), 85% (367 of 434) of laboratories using the uniform procedure and 80% (458 of 576) using the other method reported a titer difference of 1 or less. CONCLUSIONS.— Despite advances, interlaboratory and intralaboratory variance for this assay remains high in comparison with the strong reliance on titer results in clinical practice. There needs to be a reevaluation of the role of this test in clinical decision-making.
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Affiliation(s)
- Matthew S Karafin
- From the Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill (Karafin, Park)
| | - Robert A DeSimone
- The Department of Pathology and Laboratory Medicine, Weill Cornell Medical Center, New York, New York (DeSimone)
| | - James Dvorak
- Proficiency Testing (Dvorak), College of American Pathologists, Northfield, Illinois
| | - Ryan A Metcalf
- ARUP Laboratories, Department of Pathology, University of Utah School of Medicine, Salt Lake City (Metcalf)
| | - Monica B Pagano
- The Department of Laboratory Medicine, University of Washington Medical Center, Seattle (Pagano)
| | - Yara A Park
- From the Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill (Karafin, Park)
| | - Joseph Schwartz
- The Department of Pathology, Molecular & Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York (Schwartz)
| | - Rhona J Souers
- Biostatistics (Souers), College of American Pathologists, Northfield, Illinois
| | - Zbigniew M Szczepiorkowski
- The Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire (Szczepiorkowski)
| | - Lynne Uhl
- The Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts (Uhl)
| | - Glenn Ramsey
- The Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois (Ramsey)
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Carson JL, Stanworth SJ, Guyatt G, Valentine S, Dennis J, Bakhtary S, Cohn CS, Dubon A, Grossman BJ, Gupta GK, Hess AS, Jacobson JL, Kaplan LJ, Lin Y, Metcalf RA, Murphy CH, Pavenski K, Prochaska MT, Raval JS, Salazar E, Saifee NH, Tobian AAR, So-Osman C, Waters J, Wood EM, Zantek ND, Pagano MB. Red Blood Cell Transfusion: 2023 AABB International Guidelines. JAMA 2023; 330:1892-1902. [PMID: 37824153 DOI: 10.1001/jama.2023.12914] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Importance Red blood cell transfusion is a common medical intervention with benefits and harms. Objective To provide recommendations for use of red blood cell transfusion in adults and children. Evidence Review Standards for trustworthy guidelines were followed, including using Grading of Recommendations Assessment, Development and Evaluation methods, managing conflicts of interest, and making values and preferences explicit. Evidence from systematic reviews of randomized controlled trials was reviewed. Findings For adults, 45 randomized controlled trials with 20 599 participants compared restrictive hemoglobin-based transfusion thresholds, typically 7 to 8 g/dL, with liberal transfusion thresholds of 9 to 10 g/dL. For pediatric patients, 7 randomized controlled trials with 2730 participants compared a variety of restrictive and liberal transfusion thresholds. For most patient populations, results provided moderate quality evidence that restrictive transfusion thresholds did not adversely affect patient-important outcomes. Recommendation 1: for hospitalized adult patients who are hemodynamically stable, the international panel recommends a restrictive transfusion strategy considering transfusion when the hemoglobin concentration is less than 7 g/dL (strong recommendation, moderate certainty evidence). In accordance with the restrictive strategy threshold used in most trials, clinicians may choose a threshold of 7.5 g/dL for patients undergoing cardiac surgery and 8 g/dL for those undergoing orthopedic surgery or those with preexisting cardiovascular disease. Recommendation 2: for hospitalized adult patients with hematologic and oncologic disorders, the panel suggests a restrictive transfusion strategy considering transfusion when the hemoglobin concentration is less than 7 g/dL (conditional recommendations, low certainty evidence). Recommendation 3: for critically ill children and those at risk of critical illness who are hemodynamically stable and without a hemoglobinopathy, cyanotic cardiac condition, or severe hypoxemia, the international panel recommends a restrictive transfusion strategy considering transfusion when the hemoglobin concentration is less than 7 g/dL (strong recommendation, moderate certainty evidence). Recommendation 4: for hemodynamically stable children with congenital heart disease, the international panel suggests a transfusion threshold that is based on the cardiac abnormality and stage of surgical repair: 7 g/dL (biventricular repair), 9 g/dL (single-ventricle palliation), or 7 to 9 g/dL (uncorrected congenital heart disease) (conditional recommendation, low certainty evidence). Conclusions and Relevance It is good practice to consider overall clinical context and alternative therapies to transfusion when making transfusion decisions about an individual patient.
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Affiliation(s)
- Jeffrey L Carson
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - Simon J Stanworth
- Department of Haematology, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
- NHSBT, Oxford, United Kingdom
- Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Department of Transfusion Medicine, NHS Blood and Transplant, Oxford, United Kingdom
| | - Gordon Guyatt
- Departments of Clinical Epidemiology and Biostatistics and Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Stacey Valentine
- Department of Pediatrics, University of Massachusetts Chan Medical School, Worcester
| | - Jane Dennis
- Cochrane Injuries Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Sara Bakhtary
- Department of Laboratory Medicine, University of California, San Francisco
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis
| | | | - Brenda J Grossman
- Department of Pathology and Immunology, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Gaurav K Gupta
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Aaron S Hess
- Departments of Anesthesiology and Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison
| | - Jessica L Jacobson
- Department of Pathology, New York University Grossman School of Medicine, New York
- NYC Health + Hospitals/Bellevue, New York, New York
| | - Lewis J Kaplan
- Department of Surgery, Division of Trauma, Surgical Critical Care and Surgical Emergencies, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Yulia Lin
- Precision Diagnostics and Therapeutics Program, Sunnybrook Health Sciences Centre, Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City
| | - Colin H Murphy
- Pathology Associates of Albuquerque, Albuquerque, New Mexico
| | - Katerina Pavenski
- Department of Laboratory Medicine and Pathobiology, University of Toronto and St Michael's Hospital-Unity Health Toronto, Toronto, Ontario, Canada
| | | | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque
| | - Eric Salazar
- Department of Pathology and Laboratory Medicine, UT Health San Antonio, San Antonio, Texas
| | - Nabiha H Saifee
- Department of Laboratory Medicine and Pathology, Seattle Children's Hospital, Seattle, Washington
| | - Aaron A R Tobian
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland
| | - Cynthia So-Osman
- Department of Unit Transfusion Medicine (UTG), Sanquin Blood Bank, Amsterdam, the Netherlands
- Department Hematology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Jonathan Waters
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Erica M Wood
- Department of Haematology, Monash Health, Monash University School of Public Health and Preventive Medicine, Melbourne, Victoria, Australia
| | - Nicole D Zantek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis
| | - Monica B Pagano
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle
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4
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Li N, Pham T, Cheng C, McElfresh DC, Metcalf RA, Russell WA, Birch R, Yurkovich JT, Montemayor-Garcia C, Lane WJ, Tobian AAR, Roubinian N, Seheult J, Goel R. Blood Demand Forecasting and Supply Management: An Analytical Assessment of Key Studies Utilizing Novel Computational Techniques. Transfus Med Rev 2023; 37:150768. [PMID: 37980192 DOI: 10.1016/j.tmrv.2023.150768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 11/20/2023]
Abstract
Use of data-driven methodologies in enhancing blood transfusion practices is rising, leveraging big data, machine learning, and optimization techniques to improve demand forecasting and supply chain management. This review used a narrative approach to identify, evaluate, and synthesize key studies that considered novel computational techniques for blood demand forecasting and inventory management through a search of PubMed and Web of Sciences databases for studies published from January 01, 2016, to March 30, 2023. The studies were analyzed for their utilization of various techniques, and their strengths, limitations, and areas for improvement. Seven key studies were identified. The studies focused on different blood components using various computational methods, such as regression, machine learning, hybrid models, and time series models, across different locations and time periods. Key variables used for demand forecasting were largely derived from electronic health record data, including clinical related predictors such as laboratory test results and hospital census by location. Each study offered unique strengths and valuable insights into the use of data-driven methods in blood bank management. Common limitations were unknown generalizability to other healthcare settings or blood components, need for field-specific performance measures, lack of ABO compatibility consideration, and ethical challenges in resource allocation. While data-driven research in blood demand forecasting and management has progressed, limitations persist and further exploration is needed. Understanding these innovative, interdisciplinary methods and their complexities can help refine inventory strategies and address healthcare challenges more effectively, leading to more robust, accurate models to enhance blood management across diverse healthcare scenarios.
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Affiliation(s)
- Na Li
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Michael G. DeGroote Centre for Transfusion Research, Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Computing and Software, McMaster University, Hamilton, Ontario, Canada
| | - Tho Pham
- Stanford Blood Center and Department of Pathology, Stanford Health Care, CA, USA
| | - Calvino Cheng
- Department of Pathology and Laboratory Medicine, Dalhousie University; Nova Scotia, Canada
| | - Duncan C McElfresh
- VA Center for Innovation to Implementation & Stanford Health Policy, USA
| | - Ryan A Metcalf
- Department of Pathology University of Utah Health and ARUP Laboratories, Salt Lake City, UT, USA
| | - W Alton Russell
- School of Population and Global Health, McGill University, Montreal, Quebec, Canada
| | | | | | | | - William J Lane
- Department of Pathology, Brigham and Women 's Hospital, Harvard Medical School, Massachusetts, MA, USA
| | - Aaron A R Tobian
- Division of Transfusion Medicine, Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Nareg Roubinian
- Department of Laboratory Medicine, UCSF, San Francisco, CA, USA; Vitalant Research Institute, San Francisco, CA, USA
| | - Jansen Seheult
- Department of Laboratory Medicine and Pathology, Mayo Clinic, MN, USA
| | - Ruchika Goel
- Division of Transfusion Medicine, Department of Pathology, Johns Hopkins University, Baltimore, MD, USA; Simmons Cancer Institute, at SIU School of Medicine, Springfield, IL, USA; Corporate Medical Affairs, Vitalant, Scottsdale, AZ, USA.
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5
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Walker BS, Schmidt RL, White SK, Metcalf RA. Meta-analysis of bacterial growth characteristics in platelet components: Refining the inputs of a simulation analysis comparing the relative safety of testing strategies. Transfusion 2023; 63:1719-1727. [PMID: 37589199 DOI: 10.1111/trf.17497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/20/2023] [Accepted: 06/28/2023] [Indexed: 08/18/2023]
Abstract
BACKGROUND The relative safety of bacterial risk control strategies for platelets that include culture with or without rapid testing has been compared using simulation analysis. A wide range of bacterial lag and doubling times were included. However, published data on growth rates are available and these data have not been synthesized. We conducted a systematic review and meta-analysis to estimate growth rates and used these estimates to refine a comparative safety analysis of bacterial risk control strategies in the FDA guidance STUDY DESIGN AND METHODS: Data were extracted from published studies on bacterial growth rates in platelet components during storage. These data were used to estimate the practical range of growth rates. This refined the inputs for a simulation model comparing the safety of the testing strategies. RESULTS In total, 108 growth curves for 11 different aerobic organisms were obtained. Doubling times ranged from 0.8 to 12 h, but the lower 90% range was approximately 1-5 h. The revised comparative safety simulation using the narrower 1-5-h range showed similar rankings to the prior simulation, with 48-h large-volume delayed sampling with 7-day expiration (48C-7) demonstrating the lowest-ranking relative performance at the 103 and 105 colony forming unit (CFU)/mL exposure thresholds. DISCUSSION This was a two-step study. First, meta-analysis of published data on aerobic bacterial growth rates in stored platelets showed the vast majority of doubling times were 1-5 h. Next, an updated comparative safety simulation yielded similar results to a prior study, with 48C-7 showing the least favorable relative safety performance.
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Affiliation(s)
| | - Robert L Schmidt
- ARUP Laboratories, Salt Lake City, Utah, USA
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- ARUP Laboratories, Salt Lake City, Utah, USA
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
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6
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Metcalf RA, Cohn CS, Bakhtary S, Gniadek T, Gupta G, Harm S, Haspel RL, Hess AS, Jacobson J, Lokhandwala PM, Murphy C, Poston JN, Prochaska MT, Raval JS, Saifee NH, Salazar E, Shan H, Zantek ND, Pagano MB. Current advances in 2022: A critical review of selected topics by the Association for the Advancement of Blood and Biotherapies (AABB) Clinical Transfusion Medicine Committee. Transfusion 2023; 63:1590-1600. [PMID: 37403547 DOI: 10.1111/trf.17475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/16/2023] [Indexed: 07/06/2023]
Abstract
BACKGROUND The Association for the Advancement of Blood and Biotherapies Clinical Transfusion Medicine Committee (CTMC) composes a summary of new and important advances in transfusion medicine (TM) on an annual basis. Since 2018, this has been assembled into a manuscript and published in Transfusion. STUDY DESIGN AND METHODS CTMC members selected original manuscripts relevant to TM that were published electronically and/or in print during calendar year 2022. Papers were selected based on perceived importance and/or originality. References for selected papers were made available to CTMC members to provide feedback. Members were also encouraged to identify papers that may have been omitted initially. They then worked in groups of two to three to write a summary for each new publication within their broader topic. Each topic summary was then reviewed and edited by two separate committee members. The final manuscript was assembled by the first and senior authors. While this review is extensive, it is not a systematic review and some publications considered important by readers may have been excluded. RESULTS For calendar year 2022, summaries of key publications were assembled for the following broader topics within TM: blood component therapy; infectious diseases, blood donor testing, and collections; patient blood management; immunohematology and genomics; hemostasis; hemoglobinopathies; apheresis and cell therapy; pediatrics; and health care disparities, diversity, equity, and inclusion. DISCUSSION This Committee Report reviews and summarizes important publications and advances in TM published during calendar year 2022, and maybe a useful educational tool.
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Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Sara Bakhtary
- Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA
| | | | - Gaurav Gupta
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Sarah Harm
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont, USA
| | - Richard L Haspel
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Aaron S Hess
- Departments of Anesthesiology and Pathology & Laboratory Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Jessica Jacobson
- Department of Pathology, NYU Grossman School of Medicine, New York, New York, USA
| | - Parvez M Lokhandwala
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Colin Murphy
- TriCore Reference Laboratories, Albuquerque, New Mexico, USA
| | - Jacqueline N Poston
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont, USA
- Department of Medicine, University of Vermont, Burlington, Vermont, USA
| | - Micah T Prochaska
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | | | - Eric Salazar
- Department of Pathology, UT Health San Antonio, San Antonio, Texas, USA
| | - Hua Shan
- Department of Pathology, Stanford University, Palo Alto, California, USA
| | - Nicole D Zantek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Monica B Pagano
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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7
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Walker BS, Schmidt RL, Moore RA, White SK, Fisher MA, Metcalf RA. Bacterial culture time to detection in platelet components: An evidence synthesis and estimation of detection failures. Transfusion 2023; 63:182-192. [PMID: 36371753 DOI: 10.1111/trf.17179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Non-pathogen reduction platelet bacterial risk control strategies in the US FDA guidance include at least one culture. Almost all of these strategies have a culture hold time of ≥12 h. Studies have reported time to detection (TTD) of bacterial cultures inoculated with bacteria from contaminated platelets, but these data and estimates of risk associated with detection failures have not been synthesized. METHODS We performed a literature search to identify studies reporting TTD for samples obtained from spiked platelet components. Using extracted data, regression analysis was used to estimate TTD for culture bottles at different inoculum sizes. Detection failures were defined as events in which contaminated components are transfused to a patient. We then used published data on time of transfusion (ToT) to estimate the risk of detection failures in practice. RESULTS The search identified 1427 studies, of which 16 were included for analysis. TTD data were available for 16 different organisms, including 14 in aerobic cultures and 11 in anaerobic cultures. For inocula of 1 colony forming unit (CFU), the average TTD for aerobic organisms was 19.2 h while it was 24.9 h in anaerobic organisms, but there was substantial overall variation. A hold time of 12 versus 24 h had minimal effect for most organisms. CONCLUSION TTD variation occurs between bacterial species and within a particular species. Under typical inventory management, the relative contribution of culture detection failures is much smaller than the residual risk from sampling failures. Increasing the hold period beyond 12 h has limited value.
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Affiliation(s)
| | - Robert L Schmidt
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Ryleigh A Moore
- Department of Mathematics, University of Utah, Salt Lake City, Utah, USA
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Mark A Fisher
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
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8
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White SK, Schmidt RL, Walker BS, Metcalf RA. The epidemiology of transfusion-related acute lung injury: A scoping review and analysis. Transfusion 2023; 63:104-116. [PMID: 36420793 DOI: 10.1111/trf.17185] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/25/2022] [Accepted: 10/29/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND The purpose of this scoping review was to identify available sources of evidence on the epidemiology of transfusion-related acute lung injury (TRALI) and whether meta-analysis on the incidence of TRALI is feasible. TRALI is a serious complication and the second leading cause of death related to blood transfusion. Estimates of the incidence of TRALI would provide a useful benchmark for research to reduce TRALI. STUDY DESIGN AND METHODS We searched the Medline, EMBASE, and PubMed databases for publications related to the incidence of TRALI and hemovigilance. We included all studies irrespective of language or country. Both full-text articles and conference abstracts were included. Participants of the studies must all have received a blood transfusion. Reviews and case studies were excluded. RESULTS We identified 427 articles or abstracts to include for review. More than half were abstracts, and the majority were published after 2010. Reported TRALI definitions varied, but only 27.2% of studies reported any definition for TRALI. TRALI rates were reported using different denominators, such as per blood unit (54.1%), patient (34.4%), and transfusion episode (14.8%). Study populations and contexts were mostly general (75.6% and 80.3%, respectively). There was also variation in study design with most being observational (90.6%) and only 13.1% of all studies used modern donor restriction policies. DISCUSSION There was substantial variation in reporting in studies on TRALI incidence. Meta-analysis of TRALI rates may be feasible in specific circumstances where reporting is clear. Future studies should clearly report key items, such as a TRALI definition.
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Affiliation(s)
- Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
| | - Brandon S Walker
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
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9
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Estcourt LJ, Cohn CS, Pagano MB, Iannizzi C, Kreuzberger N, Skoetz N, Allen ES, Bloch EM, Beaudoin G, Casadevall A, Devine DV, Foroutan F, Gniadek TJ, Goel R, Gorlin J, Grossman BJ, Joyner MJ, Metcalf RA, Raval JS, Rice TW, Shaz BH, Vassallo RR, Winters JL, Tobian AAR. Clinical Practice Guidelines From the Association for the Advancement of Blood and Biotherapies (AABB): COVID-19 Convalescent Plasma. Ann Intern Med 2022; 175:1310-1321. [PMID: 35969859 PMCID: PMC9450870 DOI: 10.7326/m22-1079] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
DESCRIPTION Coronavirus disease 2019 convalescent plasma (CCP) has emerged as a potential treatment of COVID-19. However, meta-analysis data and recommendations are limited. The Association for the Advancement of Blood and Biotherapies (AABB) developed clinical practice guidelines for the appropriate use of CCP. METHODS These guidelines are based on 2 living systematic reviews of randomized controlled trials (RCTs) evaluating CCP from 1 January 2019 to 26 January 2022. There were 33 RCTs assessing 21 916 participants. The results were summarized using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) method. An expert panel reviewed the data using the GRADE framework to formulate recommendations. RECOMMENDATION 1 (OUTPATIENT) The AABB suggests CCP transfusion in addition to the usual standard of care for outpatients with COVID-19 who are at high risk for disease progression (weak recommendation, moderate-certainty evidence). RECOMMENDATION 2 (INPATIENT) The AABB recommends against CCP transfusion for unselected hospitalized persons with moderate or severe disease (strong recommendation, high-certainty evidence). This recommendation does not apply to immunosuppressed patients or those who lack antibodies against SARS-CoV-2. RECOMMENDATION 3 (INPATIENT) The AABB suggests CCP transfusion in addition to the usual standard of care for hospitalized patients with COVID-19 who do not have SARS-CoV-2 antibodies detected at admission (weak recommendation, low-certainty evidence). RECOMMENDATION 4 (INPATIENT) The AABB suggests CCP transfusion in addition to the usual standard of care for hospitalized patients with COVID-19 and preexisting immunosuppression (weak recommendation, low-certainty evidence). RECOMMENDATION 5 (PROPHYLAXIS) The AABB suggests against prophylactic CCP transfusion for uninfected persons with close contact exposure to a person with COVID-19 (weak recommendation, low-certainty evidence). GOOD CLINICAL PRACTICE STATEMENT CCP is most effective when transfused with high neutralizing titers to infected patients early after symptom onset.
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Affiliation(s)
- Lise J Estcourt
- NHS Blood and Transplant and Radcliffe Department of Medicine, University of Oxford, United Kingdom (L.J.E.)
| | - Claudia S Cohn
- University of Minnesota, Department of Laboratory Medicine and Pathology, Minneapolis, Minnesota (C.S.C.)
| | - Monica B Pagano
- University of Washington, Department of Laboratory Medicine and Pathology, Seattle, Washington (M.B.P.)
| | - Claire Iannizzi
- Evidence-based Oncology, Department of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany (C.I., N.K., N.S.)
| | - Nina Kreuzberger
- Evidence-based Oncology, Department of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany (C.I., N.K., N.S.)
| | - Nicole Skoetz
- Evidence-based Oncology, Department of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany (C.I., N.K., N.S.)
| | - Elizabeth S Allen
- University of California San Diego, Department of Pathology, La Jolla, California (E.S.A.)
| | - Evan M Bloch
- The Johns Hopkins University School of Medicine, Department of Pathology, Baltimore, Maryland (E.M.B., R.G., A.A.R.T.)
| | | | - Arturo Casadevall
- The Johns Hopkins University School of Public Health, Department of Molecular Microbiology and Immunology, Baltimore, Maryland (A.C.)
| | - Dana V Devine
- Canadian Blood Services, Vancouver, British Columbia, Canada (D.V.D.)
| | - Farid Foroutan
- University Health Network, Ted Rogers Centre for Heart Research, Toronto, and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada (F.F.)
| | - Thomas J Gniadek
- NorthShore University Health System, Department of Pathology and Laboratory Medicine, Evanston, Illinois (T.J.G.)
| | - Ruchika Goel
- The Johns Hopkins University School of Medicine, Department of Pathology, Baltimore, Maryland (E.M.B., R.G., A.A.R.T.)
| | - Jed Gorlin
- Innovative Blood Resources, Division of New York Blood Center Enterprises, St. Paul, Minnesota (J.G.)
| | - Brenda J Grossman
- Washington University in St. Louis School of Medicine, Department of Pathology and Immunology, St. Louis, Missouri (B.J.G.)
| | - Michael J Joyner
- Mayo Clinic, Department of Anesthesiology and Perioperative Medicine, Rochester, Minnesota (M.J.J.)
| | - Ryan A Metcalf
- University of Utah, Department of Pathology, Salt Lake City, Utah (R.A.M.)
| | - Jay S Raval
- University of New Mexico, Department of Pathology, Albuquerque, New Mexico (J.S.R.)
| | - Todd W Rice
- Vanderbilt University Medical Center, Division of Allergy, Pulmonary, and Critical Care Medicine, Nashville, Tennessee (T.W.R.)
| | - Beth H Shaz
- Duke University, Department of Pathology, Durham, North Carolina (B.H.S.)
| | | | - Jeffrey L Winters
- Mayo Clinic, Department of Laboratory Medicine and Pathology, Rochester, Minnesota (J.L.W.)
| | - Aaron A R Tobian
- The Johns Hopkins University School of Medicine, Department of Pathology, Baltimore, Maryland (E.M.B., R.G., A.A.R.T.)
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10
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Potter S, Sudarshan D, Lázár-Molnár E, Baker S, Metcalf RA, Lin L. Life threatening platelet transfusion refractoriness due to an anamnestic human leukocyte antigen alloantibody response. Transfusion 2022; 62:2161-2162. [PMID: 35912900 DOI: 10.1111/trf.17042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 06/08/2022] [Accepted: 06/26/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Scott Potter
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Duncan Sudarshan
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | | | - Steven Baker
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Leo Lin
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
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11
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Metcalf RA, Cohn CS, Allen ES, Bakhtary S, Gniadek T, Gupta G, Harm S, Haspel R, Hess A, Jacobson J, Lokhandwala PM, Murphy C, Poston J, Prochaska MT, Raval JS, Saifee NH, Salazar E, Shan H, Zantek N, Pagano MB. Current advances in transfusion medicine 2021: A critical review of selected topics by the AABB Clinical Transfusion Medicine Committee. Transfusion 2022; 62:1435-1445. [PMID: 35713186 DOI: 10.1111/trf.16944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Each year the AABB Clinical Transfusion Medicine Committee (CTMC) procures a synopsis highlighting new, important, and clinically relevant studies in the field of transfusion medicine (TM). This has been made available as a publication in Transfusion since 2018. METHODS CTMC members reviewed and identified original manuscripts covering TM-related topics published electronically (ahead-of-print) or in print from December 2020 to December 2021. Selection of publications was discussed at committee meetings and chosen based on perceived relevance and originality. Next, committee members worked in pairs to create a synopsis of each topic, which was then reviewed by additional committee members. The first and senior authors assembled the final manuscript. Although this synopsis is extensive, it is not exhaustive, and some articles may have been excluded or missed. RESULTS The following topics are included: blood products; convalescent plasma; donor collections and testing; hemoglobinopathies; immunohematology and genomics; hemostasis; patient blood management; pediatrics; therapeutic apheresis; and cell therapy. CONCLUSIONS This synopsis highlights and summarizes recent key developments in TM and may be useful for educational purposes.
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Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Elizabeth S Allen
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Sara Bakhtary
- Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA
| | - Thomas Gniadek
- Department of Pathology, NorthShore University Health System, Chicago, Illinois, USA
| | - Gaurav Gupta
- Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Sarah Harm
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont, USA
| | - Richard Haspel
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Aaron Hess
- Department of Anesthesiology, University of Wisconsin, Madison, Wisconsin, USA
| | - Jessica Jacobson
- Department of Pathology, NYU Grossman School of Medicine, New York, New York, USA
| | | | - Colin Murphy
- Department of Pathology, University of Maryland, Baltimore, Maryland, USA
| | - Jacqueline Poston
- Department of Medicine, University of Vermont, Burlington, Vermont, USA
| | - Micah T Prochaska
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | | | - Eric Salazar
- Department of Pathology, UT Health San Antonio, San Antonio, Texas, USA
| | - Hua Shan
- Department of Pathology, Stanford University, Palo Alto, California, USA
| | - Nichole Zantek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Monica B Pagano
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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12
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Bloch EM, Tobian AAR, Shoham S, Hanley DF, Gniadek TJ, Cachay ER, Meisenberg BR, Kafka K, Marshall C, Heath SL, Shenoy A, Paxton JH, Levine A, Forthal D, Fukuta Y, Huaman MA, Ziman A, Adamski J, Gerber J, Cruser D, Kassaye SG, Mosnaim GS, Patel B, Metcalf RA, Anjan S, Reisler RB, Yarava A, Lane K, McBee N, Gawad A, Raval JS, Zand M, Abinante M, Broderick PB, Casadevall A, Sullivan D, Gebo KA. How do I implement an outpatient program for the administration of convalescent plasma for COVID-19? Transfusion 2022; 62:933-941. [PMID: 35352362 PMCID: PMC9086144 DOI: 10.1111/trf.16871] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/14/2022] [Accepted: 03/19/2022] [Indexed: 11/30/2022]
Abstract
Convalescent plasma, collected from donors who have recovered from a pathogen of interest, has been used to treat infectious diseases, particularly in times of outbreak, when alternative therapies were unavailable. The COVID-19 pandemic revived interest in the use of convalescent plasma. Large observational studies and clinical trials that were executed during the pandemic provided insight into how to use convalescent plasma, whereby high levels of antibodies against the pathogen of interest and administration early within the time course of the disease are critical for optimal therapeutic effect. Several studies have shown outpatient administration of COVID-19 convalescent plasma (CCP) to be both safe and effective, preventing clinical progression in patients when administered within the first week of COVID-19. The United States Food and Drug Administration expanded its emergency use authorization (EUA) to allow for the administration of CCP in an outpatient setting in December 2021, at least for immunocompromised patients or those on immunosuppressive therapy. Outpatient transfusion of CCP and infusion of monoclonal antibody therapies for a highly transmissible infectious disease introduces nuanced challenges related to infection prevention. Drawing on our experiences with the clinical and research use of CCP, we describe the logistical considerations and workflow spanning procurement of qualified products, infrastructure, staffing, transfusion, and associated management of adverse events. The purpose of this description is to facilitate the efforts of others intent on establishing outpatient transfusion programs for CCP and other antibody-based therapies.
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Affiliation(s)
- Evan M. Bloch
- Department of PathologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Aaron A. R. Tobian
- Department of PathologyJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Shmuel Shoham
- Department of Medicine, Division of Infectious DiseasesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Daniel F. Hanley
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Thomas J. Gniadek
- Department of PathologyNorthshore University Health SystemEvanstonIllinoisUSA
| | - Edward R. Cachay
- Department of Medicine, Division of Infectious DiseasesUniversity of CaliforniaSan DiegoCaliforniaUnited States
| | | | - Kimberly Kafka
- Department of PediatricsJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Christi Marshall
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Sonya L. Heath
- Department of Medicine, Division of Infectious DiseasesUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Aarthi Shenoy
- Department of Medicine, Division of Hematology and OncologyMedstar Washington Hospital CenterWashingtonDistrict of ColumbiaUSA
| | - James H. Paxton
- Department of Emergency MedicineWayne State UniversityDetroitMichiganUSA
| | - Adam Levine
- Department of Emergency MedicineRhode Island Hospital/Brown UniversityProvidenceRhode IslandUSA
| | - Donald Forthal
- Department of Medicine, Division of Infectious DiseasesUniversity of CaliforniaIrvineCaliforniaUnited States
| | - Yuriko Fukuta
- Department of Medicine, Section of Infectious DiseasesBaylor College of MedicineHoustonTexasUSA
| | - Moises A. Huaman
- Department of Medicine, Division of Infectious DiseasesUniversity of CincinnatiCincinnatiOhioUSA
| | - Alyssa Ziman
- Department of PathologyUniversity of CaliforniaLos AngelesCaliforniaUSA
| | - Jill Adamski
- Department of Laboratory MedicineMayo Clinic HospitalPhoenixArizonaUSA
| | - Jonathan Gerber
- Department of Medicine, Division of Hematology and OncologyUniversity of MassachusettsWorchesterMassachusettsUSA
| | - Daniel Cruser
- Nuvance Health Vassar Brothers Medical CenterPoughkeepsieNew YorkUSA
| | - Seble G. Kassaye
- Department of Medicine, Division of Infectious DiseasesMedstar Georgetown University HospitalWashingtonDistrict of ColumbiaUSA
| | - Giselle S. Mosnaim
- Division of Allergy and Immunology, Department of MedicineNorthshore University Health SystemEvanstonIllinoisUSA
| | - Bela Patel
- Department of Medicine, Divisions of Pulmonary and Critical Care MedicineUniversity of Texas Health Science CenterHoustonTexasUSA
| | - Ryan A. Metcalf
- Department of Medicine, Division of Infectious DiseasesUniversity of UtahSalt Lake CityUtahUSA
| | - Shweta Anjan
- Department of Medicine, Division of Infectious DiseasesUniversity of Miami, Miller School of MedicineMiamiFloridaUSA
| | | | - Anusha Yarava
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Karen Lane
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Nichol McBee
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Amy Gawad
- Department of NeurologyBrain Injury Outcomes Division, Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Jay S. Raval
- Department of PathologyUniversity of New MexicoAlbuquerqueNew MexicoUSA
| | - Martin Zand
- Department of MedicineUniversity of RochesterRochesterNew YorkUSA
| | | | | | - Arturo Casadevall
- Departments of Molecular Microbiology and ImmunologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - David Sullivan
- Departments of Molecular Microbiology and ImmunologyJohns Hopkins Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - Kelly A. Gebo
- Department of Medicine, Division of Infectious DiseasesJohns Hopkins University School of MedicineBaltimoreMarylandUSA
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13
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Wang Z, Zhe S, Zimmerman J, Morrisey C, Tonna JE, Sharma V, Metcalf RA. Development and validation of a machine learning method to predict intraoperative red blood cell transfusions in cardiothoracic surgery. Sci Rep 2022; 12:1355. [PMID: 35079127 PMCID: PMC8789772 DOI: 10.1038/s41598-022-05445-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/12/2022] [Indexed: 12/23/2022] Open
Abstract
Accurately predicting red blood cell (RBC) transfusion requirements in cardiothoracic (CT) surgery could improve blood inventory management and be used as a surrogate marker for assessing hemorrhage risk preoperatively. We developed a machine learning (ML) method to predict intraoperative RBC transfusions in CT surgery. A detailed database containing time-stamped clinical variables for all CT surgeries from 5/2014-6/2019 at a single center (n = 2410) was used for model development. After random forest feature selection, surviving features were inputs for ML algorithms using five-fold cross-validation. The dataset was updated with 437 additional cases from 8/2019-8/2020 for validation. We developed and validated a hybrid ML method given the skewed nature of the dataset. Our Gaussian Process (GP) regression ML algorithm accurately predicted RBC transfusion amounts of 0 and 1-3 units (root mean square error, RMSE 0.117 and 1.705, respectively) and our GP classification ML algorithm accurately predicted 4 + RBC units transfused (area under the curve, AUC = 0.826). The final prediction is the regression result if classification predicted < 4 units transfused, or the classification result if 4 + units were predicted. We developed and validated an ML method to accurately predict intraoperative RBC transfusions in CT surgery using local data.
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Affiliation(s)
- Zheng Wang
- School of Computing, University of Utah, Salt Lake City, UT, USA
| | - Shandian Zhe
- School of Computing, University of Utah, Salt Lake City, UT, USA
| | - Joshua Zimmerman
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, USA
| | - Candice Morrisey
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, USA
| | - Joseph E Tonna
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, USA
| | - Vikas Sharma
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, UT, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, UT, USA.
- ARUP Laboratories, Salt Lake City, UT, USA.
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14
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Allen ES, Cohn CS, Bakhtary S, Dunbar NM, Gniadek T, Hopkins CK, Jacobson J, Lokhandwala PM, Metcalf RA, Murphy C, Prochaska MT, Raval JS, Shan H, Storch EK, Pagano MB. Current advances in transfusion medicine 2020: A critical review of selected topics by the AABB Clinical Transfusion Medicine Committee. Transfusion 2021; 61:2756-2767. [PMID: 34423446 DOI: 10.1111/trf.16625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND The AABB Clinical Transfusion Medicine Committee (CTMC) compiles an annual synopsis of the published literature covering important developments in the field of transfusion medicine (TM), which has been made available as a manuscript published in Transfusion since 2018. METHODS CTMC committee members reviewed original manuscripts including TM-related topics published electronically (ahead) or in print from December 2019 to December 2020. The selection of topics and manuscripts was discussed at committee meetings and chosen based on relevance and originality. Next, committee members worked in pairs to create a synopsis of each topic, which was then reviewed by two additional committee members. The first and senior authors of this manuscript assembled the final manuscript. Although this synopsis is extensive, it is not exhaustive, and some papers may have been excluded or missed. RESULTS The following topics are included: COVID-19 effects on the blood supply and regulatory landscape, COVID convalescent plasma, adult transfusion practices, whole blood, molecular immunohematology, pediatric TM, cellular therapy, and apheresis medicine. CONCLUSIONS This synopsis provides easy access to relevant topics and may be useful as an educational tool.
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Affiliation(s)
- Elizabeth S Allen
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Sara Bakhtary
- Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA
| | - Nancy M Dunbar
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Thomas Gniadek
- Department of Pathology, NorthShore University Health System, Chicago, Illinois, USA
| | | | - Jessica Jacobson
- Department of Pathology, New York University Grossman School of Medicine, New York, New York, USA
| | - Parvez M Lokhandwala
- American Red Cross, Biomedical Services, Baltimore, Maryland, USA.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ryan A Metcalf
- Clinical Pathology Division, Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Colin Murphy
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Micah T Prochaska
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | - Hua Shan
- Department of Pathology, Stanford University, Stanford, California, USA
| | - Emily K Storch
- Office of Blood Research and Review, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Monica B Pagano
- Transfusion Medicine Division, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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15
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Moore RA, Schmidt RL, Metcalf RA. In reply: Window periods for secondary bacterial culture of platelets according to FDA guidance. Transfusion 2021; 61:1343-1344. [PMID: 33831228 DOI: 10.1111/trf.16311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Ryleigh A Moore
- Department of Mathematics, University of Utah, Salt Lake City, Utah, USA
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
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16
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Corean J, White SK, Schmidt RL, Walker BS, Fisher MA, Metcalf RA. Platelet Component False Positive Detection Rate in Aerobic and Anaerobic Primary Culture: A Systematic Review and Meta-Analysis. Transfus Med Rev 2021; 35:44-52. [PMID: 34158212 DOI: 10.1016/j.tmrv.2021.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
Septic reactions from platelet transfusions are one of the leading causes of transfusion-associated mortality. The FDA guidance for platelet bacterial risk control includes bacterial culture using both aerobic and anaerobic bottles. Several studies have reported false positive rates (FPR) of culture, but these data have not been summarized or influencing factors analyzed. A systematic review and meta-analysis was performed according to published guidelines to assess the false positive rate and influencing factors. Eighteen studies were included for analysis. The combined aerobic/anaerobic FPR was 2.4 events per thousand (EPT) with a prediction interval of 0.5 to 5.7, while the aerobic FPR rate was 1.0 EPT (prediction interval: 0.2-2.2) and the anaerobic rate was 1.8 EPT. Estimates were based on a total of almost 5 million units tested. The rate of false positives due to instrument error was between 0.5-1.7 EPT, while it was between 0.3-1.0 EPT for sampling contamination based on whether only aerobic, anaerobic, or aerobic/anaerobic cultures were performed. The FPR is approximately 2 to 5 times higher than the literature reported true positive rate of 0.5 EPT.
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Affiliation(s)
- Jessica Corean
- Department of Pathology, University of Utah, Salt Lake City, UT, USA
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, UT, USA
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, UT, USA; ARUP Laboratories, Salt Lake City, UT, USA
| | | | - Mark A Fisher
- Department of Pathology, University of Utah, Salt Lake City, UT, USA; ARUP Laboratories, Salt Lake City, UT, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, UT, USA; ARUP Laboratories, Salt Lake City, UT, USA.
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17
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Self WH, Stewart TG, Wheeler AP, El Atrouni W, Bistran-Hall AJ, Casey JD, Cataldo VD, Chappell JD, Cohn CS, Collins JB, Denison MR, de Wit M, Dixon SL, Duggal A, Edwards TL, Fontaine MJ, Ginde AA, Harkins MS, Harrington T, Harris ES, Hoda D, Ipe TS, Jaiswal SJ, Johnson NJ, Jones AE, Laguio-Vila M, Lindsell CJ, Mallada J, Mammen MJ, Metcalf RA, Middleton EA, Mucha S, O'Neal HR, Pannu SR, Pulley JM, Qiao X, Raval JS, Rhoads JP, Schrager H, Shanholtz C, Shapiro NI, Schrantz SJ, Thomsen I, Vermillion KK, Bernard GR, Rice TW. Passive Immunity Trial for Our Nation (PassITON): study protocol for a randomized placebo-control clinical trial evaluating COVID-19 convalescent plasma in hospitalized adults. Trials 2021; 22:221. [PMID: 33743799 PMCID: PMC7980732 DOI: 10.1186/s13063-021-05171-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/05/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Convalescent plasma is being used widely as a treatment for coronavirus disease 2019 (COVID-19). However, the clinical efficacy of COVID-19 convalescent plasma is unclear. METHODS The Passive Immunity Trial for Our Nation (PassITON) is a multicenter, placebo-controlled, blinded, randomized clinical trial being conducted in the USA to provide high-quality evidence on the efficacy of COVID-19 convalescent plasma as a treatment for adults hospitalized with symptomatic disease. Adults hospitalized with COVID-19 with respiratory symptoms for less than 14 days are eligible. Enrolled patients are randomized in a 1:1 ratio to 1 unit (200-399 mL) of COVID-19 convalescent plasma that has demonstrated neutralizing function using a SARS-CoV-2 chimeric virus neutralization assay. Study treatments are administered in a blinded fashion and patients are followed for 28 days. The primary outcome is clinical status 14 days after study treatment as measured on a 7-category ordinal scale assessing mortality, respiratory support, and return to normal activities of daily living. Key secondary outcomes include mortality and oxygen-free days. The trial is projected to enroll 1000 patients and is designed to detect an odds ratio ≤ 0.73 for the primary outcome. DISCUSSION This trial will provide the most robust data available to date on the efficacy of COVID-19 convalescent plasma for the treatment of adults hospitalized with acute moderate to severe COVID-19. These data will be useful to guide the treatment of COVID-19 patients in the current pandemic and for informing decisions about whether developing a standardized infrastructure for collecting and disseminating convalescent plasma to prepare for future viral pandemics is indicated. TRIAL REGISTRATION ClinicalTrials.gov NCT04362176 . Registered on 24 April 2020.
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Affiliation(s)
- Wesley H Self
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA.
- Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, USA.
| | - Thomas G Stewart
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, USA
| | - Allison P Wheeler
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, USA
| | - Wissam El Atrouni
- Division of Infectious Diseases, Department of Internal Medicine, The University of Kansas School of Medicine, Kasas, USA
| | - Amanda J Bistran-Hall
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Jonathan D Casey
- Department of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, USA
| | - Vince D Cataldo
- Division of Hematology and Oncology, Louisiana State University Health-Sciences Center, New Orleans, USA
| | - James D Chappell
- Division of Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, USA
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, USA
| | - Jessica B Collins
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Mark R Denison
- Division of Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, USA
| | - Marjolein de Wit
- Division of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, Virginia Commonwealth University, Richmond, USA
| | - Sheri L Dixon
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Abhijit Duggal
- Department of Critical Care, Respiratory Institute, Cleveland Clinical Healthcare System, Cleveland, USA
| | - Terri L Edwards
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Magali J Fontaine
- Division of Transfusion Services, Department of Pathology, University of Maryland School of Medicine, Baltimore, USA
| | - Adit A Ginde
- Department of Emergency Medicine, University of Colorado School of Medicine, Boulder, USA
| | - Michelle S Harkins
- Department of Medicine, University of New Mexico School of Medicine, Albuquerque, USA
| | - Thelma Harrington
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Maryland School of Medicine, College Park, USA
| | - Estelle S Harris
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Utah, Salt Lake City, USA
| | | | - Tina S Ipe
- Department of Pathology and Laboratory Medicine, University of Arkansas for Medical Sciences, Fayetteville, USA
| | - Stuti J Jaiswal
- Division of Hospital Medicine, Scripps Clinic, Scripps Research Translational Institute, The Scripps Research Institute, San Diego, USA
| | - Nicholas J Johnson
- Department of Emergency and Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, USA
| | - Alan E Jones
- Department of Emergency Medicine, University of Mississippi Medical Center, Oxford, USA
| | - Maryrose Laguio-Vila
- Department of Internal Medicine, Division of Infectious Disease, Rochester General Hospital, Rochester, USA
| | | | - Jason Mallada
- Department of Pharmacy, Newton-Wellesley Hospital, Massachusetts College of Pharmacy and Health Sciences, Boston, USA
| | - Manoj J Mammen
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, State University of New York at Buffalo, Buffalo, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, USA
| | - Elizabeth A Middleton
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Utah, Salt Lake City, USA
| | - Simon Mucha
- Department of Critical Care, Respiratory Institute, Cleveland Clinical Healthcare System, Cleveland, USA
| | - Hollis R O'Neal
- Division of Pulmonary and Critical Care, Louisiana State University Health-Sciences Center, New Orleans, USA
| | - Sonal R Pannu
- Division of Pulmonary, Critical Care, and Sleep Medicine, The Ohio State University, Columbus, USA
| | - Jill M Pulley
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Xian Qiao
- Sentara Pulmonary, Critical Care, and Sleep Specialists, Sentara Health, Eastern Virginia Medical School, Norfolk, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico School of Medicine, Albuquerque, USA
| | - Jillian P Rhoads
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Harry Schrager
- Newton-Wellesley Hospital, Department of Medicine, Tufts School of Medicine, Boston, USA
| | - Carl Shanholtz
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Maryland School of Medicine, College Park, USA
| | - Nathan I Shapiro
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, USA
| | | | - Isaac Thomsen
- Division of Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, USA
| | - Krista K Vermillion
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
| | - Gordon R Bernard
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
- Department of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, USA
| | - Todd W Rice
- Vanderbilt Institute for Clinical and Translational Research (VICTR), Vanderbilt University Medical Center, 1313 21st Ave South, 312 Oxford House, Nashville, TN, 37232, USA
- Department of Medicine, Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, USA
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18
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Karafin MS, Becker JL, Berg M, DeSimone RA, Draper NL, Hudgins J, Metcalf RA, Pagano MB, Park YA, Rossmann SN, Schwartz J, Souers R, Thomas L, Uhl L, Ramsey GE. Heterogeneity in Approaches for Switching From Universal to Patient ABO Type-Specific Blood Components During Massive Hemorrhage: An International Survey and Review of the Literature. Arch Pathol Lab Med 2021; 145:1499-1504. [PMID: 33720316 DOI: 10.5858/arpa.2020-0374-cp] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2020] [Indexed: 11/06/2022]
Abstract
CONTEXT.— ABO mistransfusions are rare and potentially fatal events. Protocols are required by regulatory agencies to minimize this risk to patients, but how these are applied in the context of massive transfusion protocols (MTPs) is not specifically defined. OBJECTIVE.— To evaluate the approaches used by transfusion services for switching from universally compatible to patient ABO type-specific blood components during massive hemorrhage. DESIGN.— We added 1 supplemental multiple-choice question to address the study objective to the 2019 College of American Pathologists proficiency test J-survey (J-A 2019). We also reviewed the available literature regarding this topic. RESULTS.— A total of 881 laboratories responded to the supplemental question. Approximately 80% (704 of 881) report a policy for ABO-type switching during an MTP. Policies varied considerably between responding laboratories, but most (384 of 704, 55%) required 2 ABO types to match before switching from universal to recipient-specific blood components. Additional safety measures used in a minority of these protocols included reaction strength criteria (103 of 704, 15%), on-call medical director approval (41 0f 704, 5.8%), universal red cell unit number limits (12 of 704, 1.7%), or the presence of a mixed field (3 of 704, 0.4%). CONCLUSIONS.— This survey reveals that significant heterogeneity exists regarding the available approaches for ABO-type switching during an MTP. Specific expert guidance regarding this issue is very limited, and best practices have not yet been established or rigorously investigated.
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Affiliation(s)
- Matthew S Karafin
- From Versiti, Medical Sciences Institute, Milwaukee, Wisconsin (Karafin).,Karafin is currently located in the Department of Pathology at the University of North Carolina, Chapel Hill.,The Department of Pathology, Medical College of Wisconsin, Milwaukee (Karafin)
| | - Joanne L Becker
- The Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, New York (Becker)
| | - Mary Berg
- The Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora (Berg, Draper)
| | - Robert A DeSimone
- The Department of Pathology and Laboratory Medicine, Weill Cornell Medical Center, New York, New York (DeSimone)
| | - Nicole L Draper
- The Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora (Berg, Draper)
| | - Jay Hudgins
- The Department of Pathology, Los Angeles Children's Hospital, University of Southern California Medical Center, Los Angeles, California (Hudgins)
| | - Ryan A Metcalf
- ARUP Blood Services, University of Utah School of Medicine, Salt Lake City (Metcalf)
| | - Monica B Pagano
- The Department of Laboratory Medicine, University of Washington Medical Center, Seattle (Pagano)
| | - Yara A Park
- The Department of Pathology and Laboratory Medicine, University of North Carolina Hospitals, Chapel Hill (Park)
| | | | - Joseph Schwartz
- The Department of Pathology, Columbia University Medical Center, New York, New York (Schwartz)
| | - Rhona Souers
- Statistics (Souers) and PT - Technical & Administration (Thomas), College of American Pathologists, Northfield, Illinois
| | - Lamont Thomas
- Statistics (Souers) and PT - Technical & Administration (Thomas), College of American Pathologists, Northfield, Illinois
| | - Lynne Uhl
- The Department of Laboratory and Transfusion Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts (Uhl)
| | - Glenn E Ramsey
- The Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois (Ramsey)
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19
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Cohn CS, Estcourt L, Grossman BJ, Pagano MB, Allen ES, Bloch EM, Casadevall A, Devine DV, Dunbar NM, Foroutan F, Gniadek TJ, Goel R, Gorlin J, Joyner MJ, Metcalf RA, Raval JS, Rice TW, Shaz BH, Vassallo RR, Winters JL, Beaudoin G, Tobian AAR. COVID-19 convalescent plasma: Interim recommendations from the AABB. Transfusion 2021; 61:1313-1323. [PMID: 33586160 PMCID: PMC8014606 DOI: 10.1111/trf.16328] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 02/10/2021] [Indexed: 12/16/2022]
Affiliation(s)
- Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Lise Estcourt
- NHS Blood and Transplant, Oxford, UK.,Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Brenda J Grossman
- Department of Pathology and Immunology, Washington University in St. Louis School of Medicine, St Louis, Missouri, USA
| | - Monica B Pagano
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Elizabeth S Allen
- Department of Pathology, University of California San Diego, La Jolla, California, USA
| | - Evan M Bloch
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Arturo Casadevall
- Department of Molecular Microbiology and Immunology, The Johns Hopkins University School of Public Health, Baltimore, Maryland, USA
| | - Dana V Devine
- Canadian Blood Services, Vancouver, British Columbia, Canada
| | - Nancy M Dunbar
- Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Farid Foroutan
- University Health Network, Ted Rogers Centre for Heart Research, Toronto, Ontario, Canada
| | - Thomas J Gniadek
- Department of Pathology and Laboratory Medicine, NorthShore University HealthSystem, Evanston, Illinois, USA
| | - Ruchika Goel
- Mississippi Valley Regional Blood Center, Springfield, Illinois, USA
| | - Jed Gorlin
- Division of New York Blood Center Enterprises, Innovative Blood Resources, Saint Paul, Minnesota, USA
| | - Michael J Joyner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | - Todd W Rice
- Vanderbilt University Medical Center, Division of Allergy, Pulmonary, and Critical Care Medicine, Nashville, Tennessee, USA
| | - Beth H Shaz
- Department of Pathology, Duke University, Durham, North Carolina, USA
| | | | - Jeffrey L Winters
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Aaron A R Tobian
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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20
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Self WH, Stewart TG, Wheeler AP, El Atrouni W, Bistran-Hall AJ, Casey JD, Cataldo VD, Chappell JD, Cohn CS, Collins JB, Denison MR, de Wit M, Dixon SL, Duggal A, Edwards TL, Fontaine MJ, Ginde AA, Harkins MS, Harrington T, Harris ES, Hoda D, Ipe TS, Jaiswal SJ, Johnson NJ, Jones AE, Laguio-Vila M, Lindsell CJ, Mallada J, Mammen MJ, Metcalf RA, Middleton EA, Mucha S, O'Neal HR, Pannu SR, Pulley JM, Qiao X, Raval JS, Rhoads JP, Schrager H, Shanholtz C, Shapiro NI, Schrantz SJ, Thomsen I, Vermillion KK, Bernard GR, Rice TW. Passive Immunity Trial for Our Nation (PassITON): study protocol for a randomized placebo-control clinical trial evaluating COVID-19 convalescent plasma in hospitalized adults. Res Sq 2021:rs.3.rs-227796. [PMID: 33688640 PMCID: PMC7941637 DOI: 10.21203/rs.3.rs-227796/v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Background: Convalescent plasma is being used widely as a treatment for coronavirus disease 2019 (COVID-19). However, the clinical efficacy of COVID-19 convalescent plasma is unclear. Methods: The Pass ive I mmunity T rial for O ur N ation (PassITON), is a multicenter, placebo-controlled, blinded, randomized clinical trial being conducted in the United States to provide high-quality evidence on the efficacy of COVID-19 convalescent plasma as a treatment for adults hospitalized with symptomatic disease. Adults hospitalized with COVID-19 with respiratory symptoms for less than 14 days are eligible. Enrolled patients are randomized in a 1:1 ratio to 1 unit (200-399 mL) of COVID-19 convalescent plasma that has demonstrated neutralizing function using a SARS-CoV-2 chimeric virus neutralization assay. Study treatments are administered in a blinded fashion and patients are followed for 28 days. The primary outcome is clinical status 14 days after study treatment as measured on a 7-category ordinal scale assessing mortality, respiratory support, and return to normal activities of daily living. Key secondary outcomes include mortality and oxygen-free days. The trial is projected to enroll 1000 patients and is designed to detect an odds ratio ≤ 0.73 for the primary outcome. Discussion: This trial will provide the most robust data available to date on the efficacy of COVID-19 convalescent plasma for the treatment of adults hospitalized with acute moderate to severe COVID-19. These data will be useful to guide the treatment of COVID-19 patients in the current pandemic and for informing decisions about whether developing a standardized infrastructure for collecting and disseminating convalescent plasma to prepare for future viral pandemics is indicated. Trial Registration: ClinicalTrials.gov: NCT04362176. Date of trial registration: April 24, 2020, https://clinicaltrials.gov/ct2/show/NCT04362176.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Adit A Ginde
- University of Colorado Denver School of Medicine
| | | | | | | | | | - Tina S Ipe
- University of Arkansas for Medical Sciences
| | | | | | | | | | | | | | - Manoj J Mammen
- State University of New York at Buffalo: University at Buffalo
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21
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Silva O, Charu V, Ewalt MD, Metcalf RA, Zhao S, Castellanos EM, Orellana E, Natkunam Y, Luna-Fineman S. Classic Hodgkin lymphoma in Guatemalan children of age less than six years: analysis of immune regulatory pathways and the tumor microenvironment. Leuk Lymphoma 2021; 62:1609-1618. [PMID: 33627023 DOI: 10.1080/10428194.2021.1885666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Classic Hodgkin lymphoma (cHL) in young children (ages 0-6) is rare in high income countries (HICs) but is more prevalent in low- and middle-income countries (LMICs) like Guatemala. Given that the majority of cHL studies have evaluated adolescent/adults, and the immune system changes with age, we sought to characterize Epstein-Barr virus (EBV) expression, immune regulatory pathway markers and the tumor microenvironment in 42 children ages 0-6 with cHL from Guatemala. We found a very high frequency of EBV expression (97.5%). Hodgkin cells showed increased expression of PD1 ligands and CD137, indicative of shared immune regulatory mechanisms with adult cHL. Pediatric cHL also showed an increase in CD8+ tumor infiltrating lymphocytes and tumor associated macrophages within the tumor microenvironment. Despite 25 having high risk disease, only 4 patients died from progressive disease, relapse or infection.
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Affiliation(s)
- Oscar Silva
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Vivek Charu
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Mark D Ewalt
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Shuchun Zhao
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Elizabeth Orellana
- Unidad Nacional de Oncologia Pediátrica, Guatemala City, Guatemala.,School of Medicine, Francisco Marroquin University, Guatemala City, Guatemala
| | - Yasodha Natkunam
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Sandra Luna-Fineman
- Pediatric Hematology/Oncology/SCT, Center for Global Health, School of Medicine, University of Colorado Anschutz, Aurora, CO, USA
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22
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Metcalf RA, Goodfellow J, Cail K, Blaylock R, Kawamoto K, Enniss T, Galaviz C, Lim M, Reddy S, Sharma V, Wanner N. Electronic clinical decision support: Evidence that default settings influence end-user behavior. Transfusion 2021; 61:669-670. [PMID: 33438332 DOI: 10.1111/trf.16269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 10/01/2020] [Accepted: 11/15/2020] [Indexed: 01/26/2023]
Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | | | - Kelly Cail
- ARUP Laboratories, Salt Lake City, Utah, USA
| | - Robert Blaylock
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA.,ARUP Laboratories, Salt Lake City, Utah, USA
| | - Kensaku Kawamoto
- Department of Medical Informatics, University of Utah, Salt Lake City, Utah, USA
| | - Toby Enniss
- Department of Surgery, University of Utah, Salt Lake City, Utah, USA
| | - Charles Galaviz
- Department of Anesthesiology, University of Utah, Salt Lake City, Utah, USA
| | - Ming Lim
- Department of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Santosh Reddy
- Department of Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Vikas Sharma
- Department of Surgery, University of Utah, Salt Lake City, Utah, USA
| | - Nathan Wanner
- Department of Medicine, University of Utah, Salt Lake City, Utah, USA
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23
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Moore RA, Schmidt RL, Metcalf RA. The impact of the sample time of secondary bacterial culture on the risk of exposure to contaminated platelet components: A mathematical analysis. Transfusion 2021; 61:873-882. [PMID: 33429466 DOI: 10.1111/trf.16258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/30/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND The US Food and Drug Administration (FDA) issued a guidance for bacterial risk control strategies for platelet components in September 2019 that includes strategies using secondary bacterial culture (SBC). While an SBC likely increases safety, the optimal timing of the SBC is unknown. Our aim was to develop a model to provide insight into the best time for SBC sampling. STUDY DESIGN AND METHODS We developed a mathematical model based on the conditional probability of a bacterial contamination event. The model evaluates the impact of secondary culture sampling time over a range of bacterial contamination scenarios (lag and doubling times), with the primary outcome being the optimal secondary sampling time and the associated risk. RESULTS Residual risk of exposure decreased with increasing inoculum size, later sampling times for primary culture, and using higher thresholds of exposure (in colony-forming units per milliliter). Given a level of exposure, the optimal sampling time for secondary culture depended on the timing of primary culture and on the expiration time. In general, the optimal sampling time for secondary culture was approximately halfway between the time of primary culture and the expiration time. CONCLUSION Our model supports that the FDA guidance is quite reasonable and that sampling earlier in the specified secondary culture windows may be most optimal for safety.
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Affiliation(s)
- Ryleigh A Moore
- Department of Mathematics, University of Utah, Salt Lake City, Utah, USA
| | - Robert L Schmidt
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
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24
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Lim MY, Pagano MB, Metcalf RA. Things We Do for No Reason™: Routinely Prescribing Transfusion Premedication to Prevent Acute Transfusion Reactions. J Hosp Med 2020; 15:684-686. [PMID: 32118560 DOI: 10.12788/jhm.3372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/07/2019] [Indexed: 11/20/2022]
Affiliation(s)
- Ming Y Lim
- Division of Hematology and Hematologic Malignancies, Department of Medicine, University of Utah, Salt Lake City, Utah
| | - Monica B Pagano
- Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah
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25
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Corean J, White SK, Schmidt RL, Walker BS, Fisher MA, Metcalf RA. The incremental benefit of anaerobic culture for controlling bacterial risk in platelets: a systematic review and meta-analysis. Vox Sang 2020; 116:397-404. [PMID: 32996621 DOI: 10.1111/vox.13013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVES Septic transfusion reactions are a principal cause of transfusion-related mortality. The frequency of detectable bacterial contamination is greater in platelets compared to other blood components because platelets are stored at room temperature. Most strategies outlined in the September 2019 FDA guidance require both aerobic culture (AC) and anaerobic culture (AnC) testing. We performed a systematic review and meta-analysis in an effort to provide the best available estimate of the effectiveness of AnC. MATERIALS AND METHODS Our analysis was performed according to published guidelines. Broad and context-specific meta-analyses of bacterial detection rates in platelets by AnC were performed to assess the practical effectiveness of AnC as a risk control measure. RESULTS Seven studies with a total of 1 767 014 tested platelet components were included for analysis. With exclusion of positives due to Cutibacterium/Propionibacterium species and redundancy due to AC results, AnC detected 0·06 contamination events per thousand (EPT) components tested, twofold lower than the AC (0·12 EPT). CONCLUSION Excluding Cutibacterium/Propionibacterium species, AnC detects occasional bacterial contamination events that are not detected by AC (~1 in 17 000 platelet components).
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Affiliation(s)
- Jessica Corean
- Department of Pathology, University of Utah, Salt Lake City, UT, USA
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, UT, USA
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, UT, USA.,ARUP Laboratories, Salt Lake City, UT, USA
| | | | - Mark A Fisher
- Department of Pathology, University of Utah, Salt Lake City, UT, USA.,ARUP Laboratories, Salt Lake City, UT, USA
| | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, UT, USA.,ARUP Laboratories, Salt Lake City, UT, USA
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Walker BS, White SK, Schmidt RL, Metcalf RA. Residual bacterial detection rates after primary culture as determined by secondary culture and rapid testing in platelet components: A systematic review and meta-analysis. Transfusion 2020; 60:2029-2037. [PMID: 32757411 DOI: 10.1111/trf.16001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Primary culture alone was a bacterial risk control strategy intended to facilitate interdiction of contaminated platelets (PLTs). A September 2019 FDA guidance includes secondary testing options to enhance safety. Our objective was to use meta-analysis to determine residual contamination risk after primary culture using secondary culture and rapid testing. STUDY DESIGN AND METHODS A December 2019 literature search identified articles on PLT bacterial detection rates using primary culture and a secondary testing method. We used meta-analysis to estimate secondary testing detection rates after a negative primary culture. We evaluated collection method, sample volume, sample time, and study date as potential sources of heterogeneity. RESULTS The search identified 6102 articles; 16 were included for meta-analysis. Of these, 12 used culture and five used rapid testing as a secondary testing method. Meta-analysis was based on a total of 103 968 components tested by secondary culture and 114 697 by rapid testing. The residual detection rate using secondary culture (DRSC ) was 0.93 (95% CI, 0.24-0.6) per 1000 components, while residual detection rate using rapid testing (DRRT ) was 0.09 (95% CI, 0.01-0.25) per 1000 components. Primary culture detection rate was the only statistically significant source of heterogeneity. CONCLUSION We evaluated bacterial detection rates after primary culture using rapid testing and secondary culture. These results provide a lower and upper bound on real-world residual clinical risk because these methods are designed to detect high-level exposures or any level of exposure, respectively. Rapid testing may miss some harmful exposures and secondary culture may identify some clinically insignificant exposures.
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Affiliation(s)
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Robert L Schmidt
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- ARUP Laboratories, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, Salt Lake City, Utah, USA
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Walker BS, Schmidt RL, Fisher MA, White SK, Blaylock RC, Metcalf RA. The comparative safety of bacterial risk control strategies for platelet components: a simulation study. Transfusion 2020; 60:1723-1731. [PMID: 32632927 DOI: 10.1111/trf.15919] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/07/2020] [Accepted: 05/13/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bacterial contamination of platelets is a problem that can lead to harmful septic transfusion reactions. The US Food and Drug Administration published a guidance in September 2019 detailing several permissible risk control strategies. Our objective was to compare the safety of each bacterial testing strategy for apheresis platelets. STUDY DESIGN AND METHODS We used simulation to compare safety of the nine risk control strategies involving apheresis platelet testing. The primary outcome was the risk of exposure. An exposure event occurred if a patient received platelets exceeding a specific contamination threshold (>0, 103 , and 105 colony-forming units (CFU/mL). We generated a range of bacterial contamination scenarios (inoculum size, doubling time, lag time) and compared risk of exposure for each policy in each contamination scenario. We then computed the average risk difference over all scenarios. RESULTS At the 0 CFU/mL exposure threshold, two-step policies that used secondary culture ranked best (all top three), while single-step 24-hour culture with 3-day expiration ranked last (ninth). This latter policy performed well (median rank of 1) at both the 103 and 105 CFU/mL thresholds, but 48-hour culture with 7-day expiration performed relatively poorly. At these higher thresholds, median ranks of two-step policies that used secondary culture were again top three. Two-step policies that used rapid testing improved at the higher (105 CFU/mL) harm threshold, with median rankings between 1 and 5. CONCLUSION Two-step policies that used secondary culture were generally safer than single-step policies. Performance of two-step policies that used rapid testing depended on the CFU per milliter threshold of exposure used.
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Affiliation(s)
- Brandon S Walker
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Robert L Schmidt
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Mark A Fisher
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Sandra K White
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Robert C Blaylock
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Ryan A Metcalf
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
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Pagano MB, Allen ES, Chou ST, Dunbar NM, Gniadek T, Goel R, Harm SK, Hopkins CK, Jacobson J, Lokhandwala PM, Metcalf RA, Raval JS, Schwartz J, Shan H, Spinella PC, Storch E, Cohn CS. Current advances in transfusion medicine: a 2019 review of selected topics from the AABB Clinical Transfusion Medicine Committee. Transfusion 2020; 60:1614-1623. [PMID: 32472580 DOI: 10.1111/trf.15848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND The AABB Clinical Transfusion Medicine Committee (CTMC) compiles an annual synopsis of the published literature covering important developments in the field of transfusion medicine (TM) for the board of director's review. This synopsis is now made available as a manuscript published in TRANSFUSION. STUDY DESIGN AND METHODS CTMC committee members review original manuscripts including TM-related topics published in different journals between late 2018 and 2019. The selection of topics and manuscripts are discussed at committee meetings and are chosen based on relevance and originality. After the topics and manuscripts are selected, committee members work in pairs to create a synopsis of the topics, which is then reviewed by two committee members. The first and senior authors of this manuscript assembled the final manuscript. Although this synopsis is comprehensive, it is not exhaustive, and some papers may have been excluded or missed. RESULTS The following topics are included: infectious risks to the blood supply, iron donor studies, pre-transfusion testing interference and genotyping, cold agglutinin disease (CAD), HLA alloimmunization in platelet transfusions, patient blood management, updates to TACO and TRALI definitions, pediatric TM, and advances in apheresis medicine. CONCLUSION This synopsis provides easy access to relevant topics and may be useful as an educational tool.
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Affiliation(s)
- Monica B Pagano
- Transfusion Medicine Division, Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Elizabeth S Allen
- Department of Pathology, University of California San Diego, La Jolla, California
| | - Stella T Chou
- Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Nancy M Dunbar
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
| | | | - Ruchika Goel
- Transfusion Medicine Division, Department of Pathology, School of Medicine, Johns Hopkins University, Baltimore, Maryland.,Division of Hematology/Oncology, Simmons Cancer Institute at Southern Illinois University School of Medicine and Mississippi Valley Regional Blood Center, Springfield, Illinois, USA
| | - Sarah K Harm
- Pathology and Laboratory Medicine, University of Vermont Medical Center, Burlington, Vermont
| | | | - Jessica Jacobson
- Department of Pathology, New York University Grossman School of Medicine, New York, New York
| | - Parvez M Lokhandwala
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ryan A Metcalf
- Clinical Pathology Division, Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Jay S Raval
- Transfusion Medicine Service, Department of Pathology, University of New Mexico, Albuquerque, New Mexico
| | - Joseph Schwartz
- Transfusion Medicine & Cellular Therapy, Department of Pathology & Cell Biology, Columbia University, New York, New York
| | - Hua Shan
- Department of Pathology, Stanford University, Stanford, California
| | - Philip C Spinella
- Division of Pediatric Critical Care, Washington University in St Louis, St Louis, Missouri, USA
| | - Emily Storch
- Office of Blood Research and Review, Food and Drug Administration, Silver Spring, Maryland
| | - Claudia S Cohn
- Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
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White SK, Schmidt RL, Walker BS, Metcalf RA. Bacterial contamination rate of platelet components by primary culture: a systematic review and meta-analysis. Transfusion 2020; 60:986-996. [PMID: 32181889 DOI: 10.1111/trf.15762] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Platelets have the highest bacterial contamination risk of all blood components, and septic transfusion reactions remain a problem. A good estimate of contamination rates could provide information about residual risk and inform optimal testing strategies. We performed a systematic review and meta-analysis of platelet contamination rates by primary culture. STUDY DESIGN AND METHODS A literature search in December 2019 identified articles on platelet contamination rates using primary culture. We used meta-analysis to estimate the overall rate of contamination and meta-regression to identify heterogeneity. We studied the following sources of heterogeneity: collection method, sample volume, positivity criteria, and study date. Contamination rate estimates were obtained for apheresis (AP), platelet rich plasma (PRP), and buffy coat (BC) collection methods. RESULTS The search identified 6102 studies, and 22 were included for meta-analysis. Among these 22 studies, there were 21 AP cohorts (4,072,022 components), 4 PRP cohorts (138,869 components), and 15 BC cohorts (1,474,679 components). The overall mean contamination rate per 1000 components was 0.51 (95% CI: 0.38-0.67) including AP (0.23, 95% CI: 0.18-0.28), PRP, (0.38, 95% CI: 0.15-0.70), and BC (1.12, 95% CI: 0.51-1.96). There was considerable variability within each collection method. Sample volume, positivity criteria, and publication year were significant sources of heterogeneity. CONCLUSION The bacterial contamination rate of platelets by primary culture is 1 in 1961. AP and PRP components showed a lower contamination rate than BC components. There is clinically significant between-study variability for each method. Larger sample volumes increased sensitivity, and bacterial contamination rates have decreased over time.
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Affiliation(s)
- Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, Utah
- ARUP Laboratories, Salt Lake City, Utah
| | | | - Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah
- ARUP Laboratories, Salt Lake City, Utah
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Metcalf RA, White SK, Potter S, Barney R, Hunter C, White M, Enniss T, Galaviz C, Reddy S, Wanner N, Schmidt RL, Blaylock R. The association of inpatient blood utilization and diagnosis-related group weight: implications for risk-adjusted benchmarking. Transfusion 2019; 59:2316-2323. [PMID: 31106447 DOI: 10.1111/trf.15343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 04/05/2019] [Accepted: 04/08/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Risk-adjusted benchmarking could be useful to compare blood utilization between hospitals or individual groups, such as physicians, while accounting for differences in patient complexity. The aim of this study was to analyze the association of red blood cell (RBC) use and diagnosis-related group (DRG) weights across all inpatient hospital stays to determine the suitability of using DRGs for between-hospital risk-adjusted benchmarking. Specific hierarchical organizational units (surgical vs. nonsurgical patients, departments, and physicians) were also evaluated. STUDY DESIGN AND METHODS We studied blood use among all adult inpatients, and within organizational units, over 4 years (May 2014 to March 2018) at an academic center. Number of RBCs transfused, all patient refined (APR)-DRGs, and other variables were captured over entire hospital stays. We used multilevel generalized linear modeling (zero-inflated negative binomial) to study the relationship between RBC utilization and APR-DRG. RESULTS A total of 97,955 hospital stays were evaluated and the median APR-DRG weight was 1.2. The association of RBCs transfused and APR-DRG weight was statistically significant at all hierarchical levels (incidence rate ratio = 1.22; p < 0.001). The impact of APR-DRG on blood use, measured by the incidence rate ratio, demonstrated an association at the all-patient and surgical levels, at several department and physician levels, but not at the medical patient level. The relationship between RBCs transfused and APR-DRG varied across organizational units. CONCLUSION Number of RBCs transfused was associated with APR-DRG weight at multiple hierarchical levels and could be used for risk-adjusted benchmarking in those contexts. The relationship between RBC use and APR-DRG varied across organizational units.
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Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
| | - Sandra K White
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Scott Potter
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Reed Barney
- Enterprise Data Warehouse, University of Utah, Salt Lake City, Utah
| | - Cheri Hunter
- Enterprise Data Warehouse, University of Utah, Salt Lake City, Utah
| | - Michael White
- Enterprise Data Warehouse, University of Utah, Salt Lake City, Utah
| | - Toby Enniss
- Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Charles Galaviz
- Department of Anesthesiology, University of Utah, Salt Lake City, Utah
| | - Santosh Reddy
- Department of Medicine, University of Utah, Salt Lake City, Utah
| | - Nathan Wanner
- Department of Medicine, University of Utah, Salt Lake City, Utah
| | - Robert L Schmidt
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
| | - Robert Blaylock
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
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Gavva C, Barroso J, Gernsheimer T, Metcalf RA, Warner P, Pagano MB. Response to random apheresis platelets versus HLA-selected platelets versus pooled platelets in HLA-sensitized patients. Transfusion 2019; 59:2276-2281. [PMID: 31032968 DOI: 10.1111/trf.15333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND It is unknown how pooled platelets (PPs) compare to random apheresis platelets (RAPs) when HLA-selected platelets (PLTs) are unavailable for HLA-sensitized patients. The aim of this study was to compare patient responses to RAPs, HLA-selected PLTs, and PPs in HLA-sensitized patients. STUDY DESIGN AND METHODS This is a single-institution retrospective study of patients from January 2014 to April 2017 with a class I calculated panel-reactive antibody of 60% or more. Response to transfusion was determined by a corrected count increment (CCI) up to 1 hour after completion of transfusion. A CCI of 5 or more was considered successful. RESULTS Seventy-seven units of RAPs, 412 units of HLA-selected PLT, and 388 units PPs were transfused. Mean CCIs when transfusing RAPs, HLA-selected PLTs, and PPs were 2.82, 11.44, and 4.77, respectively (p < 0.0001). Posttest comparison between RAPs and PPs revealed no significant difference in mean CCI while there was a significant difference between HLA-selected PLTs versus RAPs and HLA-selected PLTs versus PPs. The success rates of RAPs, HLA-selected PLTs, and PPs were 31%, 80%, and 35% respectively. There was no significant association of type of PLT and success rate when comparing RAPs versus PPs (p = 0.51) while there was a significant association between success rate and type of PLT transfusion when comparing HLA-selected PLTs with RAPs and PPs. CONCLUSION HLA-selected PLTs resulted in higher mean CCIs and more successful transfusions. There was no significant difference in mean CCI or success rate when transfusing RAPs versus PPs to HLA-sensitized patients. Future studies should assess clinical outcomes in HLA-sensitized patients receiving each type of PLT product.
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Affiliation(s)
- Chakri Gavva
- Pathology Associates of Albuquerque, Albuquerque, New Mexico.,Department of Laboratory Medicine, University of Washington School of Medicine, Seattle, Washington.,Bloodworks Northwest, Seattle, Washington
| | - Jeffrey Barroso
- Thomas Jefferson University Hospital, Philadelphia, Pennsylvania
| | - Terry Gernsheimer
- Division of Hematology, University of Washington School of Medicine, Seattle, Washington.,Seattle Cancer Care Alliance, Seattle, Washington
| | - Ryan A Metcalf
- ARUP Laboratories, University of Utah, Salt Lake City, Utah
| | | | - Monica B Pagano
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle, Washington
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Metcalf RA, Calvaresi E, Tonna JE, Blaylock R, Pearson L. Severe intravascular hemolysis following extracorporeal right ventricular assist device placement. Transfusion 2019; 59:1178-1179. [PMID: 30950087 DOI: 10.1111/trf.15136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/05/2018] [Accepted: 12/05/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
| | - Emilia Calvaresi
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
| | - Joseph E Tonna
- Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Robert Blaylock
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
| | - Lauren Pearson
- Department of Pathology, University of Utah, Salt Lake City, Utah.,ARUP Laboratories, Salt Lake City, Utah
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Pagano MB, Katchatag BL, Khoobyari S, Van Gerwen M, Sen N, Rebecca Haley N, Gernsheimer TB, Hess JR, Metcalf RA. Evaluating safety and cost-effectiveness of platelets stored in additive solution (PAS-F) as a hemolysis risk mitigation strategy. Transfusion 2018; 59:1246-1251. [DOI: 10.1111/trf.15138] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/11/2018] [Accepted: 11/29/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Monica B. Pagano
- Department of Laboratory Medicine, Division of Transfusion Medicine; University of Washington; Seattle Washington
| | - Brennan L. Katchatag
- Department of Laboratory Medicine, Division of Transfusion Medicine; Harborview Medical Center; Seattle Washington
| | - Shiva Khoobyari
- Department of Laboratory Medicine, Division of Transfusion Medicine; University of Washington; Seattle Washington
| | - Mark Van Gerwen
- Department of Laboratory Medicine, Division of Transfusion Medicine; University of Washington; Seattle Washington
| | - Nina Sen
- Department of Laboratory Medicine, Division of Transfusion Medicine; Harborview Medical Center; Seattle Washington
| | | | - Terry B. Gernsheimer
- Department of Medicine, Division of Hematology; University of Washington; Seattle Washington
| | - John R. Hess
- Department of Laboratory Medicine, Division of Transfusion Medicine; Harborview Medical Center; Seattle Washington
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Metcalf RA, Pagano MB, Hess JR, Reyes J, Perkins JD, Montenovo MI. A data-driven patient blood management strategy in liver transplantation. Vox Sang 2018; 113:421-429. [PMID: 29714029 DOI: 10.1111/vox.12650] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/02/2018] [Accepted: 03/05/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVES Blood utilization during liver transplant has decreased, but remains highly variable due to many complex surgical and physiologic factors. Previous models attempted to predict utilization using preoperative variables to stratify cases into two usage groups, usually using entire blood units for measurement. We sought to develop a practical predictive model using specific transfusion volumes (in ml) to develop a data-driven patient blood management strategy. MATERIALS AND METHODS This is a retrospective evaluation of primary liver transplants at a single institution from 2013 to 2015. Multivariable analysis of preoperative recipient and donor factors was used to develop a model predictive of intraoperative red-blood-cell (pRBC) use. RESULTS Of 256 adult liver transplants, 207 patients had complete transfusion volume data for analysis. The median intraoperative allogeneic pRBC transfusion volume was 1250 ml, and the average was 1563 ± 1543 ml. Preoperative haemoglobin, spontaneous bacterial peritonitis, preoperative haemodialysis and preoperative international normalized ratio together yielded the strongest model predicting pRBC usage. When it predicted <1250 ml of pRBCs, all cases with 0 ml transfused were captured and only 8·6% of the time >1250 ml were used. This prediction had a sensitivity of 0·91 and a specificity of 0·89. If predicted usage was >2000 ml, 75% of the time blood loss exceeded 2000 ml. CONCLUSION Patients likely to require low or high pRBC transfusion volumes were identified with excellent accuracy using this predictive model at our institution. This model may help predict bleeding risk for each patient and facilitate optimized blood ordering.
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Affiliation(s)
- R A Metcalf
- Division of Clinical Pathology, Department of Pathology, University of Utah, Salt Lake City, UT, USA
- ARUP Laboratories, Salt Lake City, UT, USA
| | - M B Pagano
- Division of Transfusion Medicine, Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - J R Hess
- Division of Transfusion Medicine, Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
- Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - J Reyes
- Division of Transplantation, Department of Surgery, University of Washington, Seattle, WA, USA
| | - J D Perkins
- Division of Transplantation, Department of Surgery, University of Washington, Seattle, WA, USA
| | - M I Montenovo
- Division of Transplantation, Department of Surgery, University of Washington, Seattle, WA, USA
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Corean J, Al-Tigar R, Pysher T, Blaylock R, Metcalf RA. Quality Improvement After Multiple Fatal Transfusion-Transmitted Bacterial Infections. Am J Clin Pathol 2018; 149:293-299. [PMID: 29462235 DOI: 10.1093/ajcp/aqx167] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Transfusion-transmitted bacterial infection (TTBI) from platelet components is likely underrecognized and can be fatal. Twenty-four-hour prospective culture was felt to be insufficiently preventive after multiple TTBIs occurred and strategies to improve safety were sought. METHODS Two fatal and one severe TTBIs occurred from a split-apheresis platelet donation contaminated with Klebsiella pneumoniae. Improvement opportunities were identified and corrective and preventive action (CAPA) followed. RESULTS To mitigate bacterial contamination and improve detection sensitivity, additional prospective culture 48 hours postcollection was implemented. Since implementation, secondary cultures have caught two true positives (0.01%) missed by 24-hour culture. Bacterial testing at issue and pathogen reduction were later implemented as an added layer of safety. CONCLUSION While rare, TTBI is a prominent cause of morbidity and mortality from contaminated platelets. The approach to CAPA presented here may lower the risk of future transfusion-transmitted infections but must be weighed against potential added costs.
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Affiliation(s)
- Jessica Corean
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
- ARUP Laboratories, Department of Pathology, University of Utah, Salt Lake City
| | - Rami Al-Tigar
- ARUP Laboratories, Department of Pathology, University of Utah, Salt Lake City
| | - Theodore Pysher
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
- Department of Pediatric Pathology, Department of Pathology, University of Utah School of Medicine, Salt Lake City
| | - Robert Blaylock
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
- ARUP Laboratories, Department of Pathology, University of Utah, Salt Lake City
| | - Ryan A Metcalf
- Department of Pathology, University of Utah School of Medicine, Salt Lake City
- ARUP Laboratories, Department of Pathology, University of Utah, Salt Lake City
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36
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Mays JA, Greene DN, Metcalf RA, Pagano MB. Transfusion support for transgender men of childbearing age. Transfusion 2018; 58:823-825. [DOI: 10.1111/trf.14470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/07/2017] [Accepted: 11/20/2017] [Indexed: 12/01/2022]
Affiliation(s)
| | - Dina N. Greene
- Chemistry Division, Department of Laboratory Medicine; University of Washington; Seattle Washington
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37
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Hess JR, Ramos PJ, Sen NE, Cruz-Cody VG, Tuott EE, Louzon MJ, Bulger EM, Arbabi S, Pagano MB, Metcalf RA. Quality management of a massive transfusion protocol. Transfusion 2017; 58:480-484. [DOI: 10.1111/trf.14443] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/29/2017] [Accepted: 10/13/2017] [Indexed: 12/16/2022]
Affiliation(s)
- John R. Hess
- Department of Laboratory Medicine; University of Washington; Seattle Washington
- Transfusion Service; Harborview Medical Center; Seattle Washington
| | - Patrick J. Ramos
- Office of the Medical Director; Harborview Medical Center; Seattle Washington
| | - Nina E. Sen
- Transfusion Service; Harborview Medical Center; Seattle Washington
| | | | - Erin E. Tuott
- Transfusion Service; Harborview Medical Center; Seattle Washington
| | - Max J. Louzon
- Transfusion Service; Harborview Medical Center; Seattle Washington
| | - Eileen M. Bulger
- Department of Surgery; University of Washington; Seattle Washington
| | - Saman Arbabi
- Department of Surgery; University of Washington; Seattle Washington
| | - Monica B. Pagano
- Department of Laboratory Medicine; University of Washington; Seattle Washington
- Transfusion Service; Harborview Medical Center; Seattle Washington
| | - Ryan A. Metcalf
- Department of Laboratory Medicine; University of Washington; Seattle Washington
- Transfusion Service; Harborview Medical Center; Seattle Washington
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38
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Hess JR, Hayden BK, Cruz-Cody VG, Louzon MJ, Tuott EE, Sen NE, Gary R, Ramos PJ, Daniel-Johnson JA, Metcalf RA, Pagano MB. Building a New Transfusion Service. Am J Clin Pathol 2017; 148:173-178. [PMID: 28898986 DOI: 10.1093/ajcp/aqx057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES For over 60 years, Harborview Medical Center (HMC) in Seattle has received its blood components and pretransfusion testing from a centralized transfusion service operated by the regional blood supplier. In 2011, a hospital-based transfusion service (HBTS) was activated. METHODS After 5 years of operation, we evaluated the effects of the HBTS by reviewing records of hospital blood use, quality system events, blood product delivery times, and costs. Furthermore, the effects of in-house expertise on laboratory medicine resident and medical laboratory scientist student training, as well as regulatory and accrediting agency concerns, were reviewed. RESULTS Blood use records from 2003 to 2015 demonstrated large reductions in blood component procurement, allocation, transfusion, and wastage with decreases in costs temporally related to the change in service. The turnaround time for thawed plasma for trauma patients decreased from 90 to 3 minutes. Transfusion medicine education metrics for residents and laboratory technology students improved significantly. HMC researchers brought in $2 million in transfusion research funding. CONCLUSIONS HMC successfully transitioned to an HBTS, providing world-class primary transfusion support to a level 1 trauma center. Near-term benefits in patient care, education, and research resulted. Blood support became faster, safer, and cheaper.
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Affiliation(s)
- John R Hess
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle
| | | | | | | | | | | | | | - Patrick J Ramos
- Office of the Medical Director, Harborview Medical Center, Seattle, WA
| | | | - Ryan A Metcalf
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle
| | - Monica B Pagano
- Department of Laboratory Medicine, University of Washington School of Medicine, Seattle
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Metcalf RA, Baker SA, Goodnough LT, Shah N. Transportation Cooler Interventions Reduce Plasma and RBC Product Wastage. Am J Clin Pathol 2016; 146:18-24. [PMID: 27357292 DOI: 10.1093/ajcp/aqw082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The rate of plasma product wastage for the United States in 2011 was approximately 1.8%. The plasma wastage rate at our institution was higher, mainly due to products returned out of temperature range from procedural areas. A process review and intervention to reduce plasma wastage was undertaken, which included modifications to our transport cooler. METHODS A new cooler system was designed, and this device was implemented alongside an updated protocol for delivering plasma while also enhancing the previous RBC cooler validation time. We audited plasma and RBC product wastage prior to these interventions, from January 2013 to February 2014, vs after the intervention from April 2014 to March 2015. RESULTS After the intervention, the monthly plasma wastage rate declined 60% (12.6 units/100 units transfused preintervention vs 5.0 units/100 units transfused postintervention; P < .0001). The monthly RBC wastage rate also decreased 28% (3.2 units/100 units transfused preintervention vs 2.3 units/100 units transfused postintervention; P < .01). CONCLUSIONS Our intervention resulted in significantly decreased plasma and RBC wastage and is broadly applicable, since out-of-temperature product wastage in procedural areas is likely a significant problem at many institutions.
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Hartmann S, Winkelmann R, Metcalf RA, Treetipsatit J, Warnke RA, Natkunam Y, Hansmann ML. Immunoarchitectural patterns of progressive transformation of germinal centers with and without nodular lymphocyte-predominant Hodgkin lymphoma. Hum Pathol 2015; 46:1655-61. [DOI: 10.1016/j.humpath.2015.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/26/2015] [Accepted: 07/08/2015] [Indexed: 10/23/2022]
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Metcalf RA, Wang L, Deos PH, Chock E, Warnke RA, Natkunam Y. Extracavity primary effusion lymphoma presenting in a lymph node without lymphomatous effusions. Human Pathology: Case Reports 2015. [DOI: 10.1016/j.ehpc.2014.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Treetipsatit J, Metcalf RA, Warnke RA, Natkunam Y. Large B-cell lymphoma with T-cell–rich background and nodules lacking follicular dendritic cell meshworks: description of an insufficiently recognized variant. Hum Pathol 2015; 46:74-83. [DOI: 10.1016/j.humpath.2014.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/01/2014] [Accepted: 09/25/2014] [Indexed: 01/12/2023]
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Metcalf RA, Monabati A, Vyas M, Roncador G, Gualco G, Bacchi CE, Younes SF, Natkunam Y, Freud AG. Myeloid cell nuclear differentiation antigen is expressed in a subset of marginal zone lymphomas and is useful in the differential diagnosis with follicular lymphoma. Hum Pathol 2014; 45:1730-6. [DOI: 10.1016/j.humpath.2014.04.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 02/07/2023]
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Sankaran VG, Ludwig LS, Sicinska E, Xu J, Bauer DE, Eng JC, Patterson HC, Metcalf RA, Natkunam Y, Orkin SH, Sicinski P, Lander ES, Lodish HF. Cyclin D3 coordinates the cell cycle during differentiation to regulate erythrocyte size and number. Genes Dev 2012; 26:2075-87. [PMID: 22929040 DOI: 10.1101/gad.197020.112] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Genome-wide association studies (GWASs) have identified a genetic variant of moderate effect size at 6p21.1 associated with erythrocyte traits in humans. We show that this variant affects an erythroid-specific enhancer of CCND3. A Ccnd3 knockout mouse phenocopies these erythroid phenotypes, with a dramatic increase in erythrocyte size and a concomitant decrease in erythrocyte number. By examining human and mouse primary erythroid cells, we demonstrate that the CCND3 gene product cyclin D3 regulates the number of cell divisions that erythroid precursors undergo during terminal differentiation, thereby controlling erythrocyte size and number. We illustrate how cell type-specific specialization can occur for general cell cycle components-a finding resulting from the biological follow-up of unbiased human genetic studies.
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Abstract
The characteristic bitter substances of the Cucurbitaceae act as kairomones for a large group of diabroticite beetles (Chrysomelidae, Galerucinae, Luperini), promoting host selection and compulsive feeding behavior. These beetles (e.g., Diabrotica undecimpunctata howardi) respond to as little as 1 ng of cucurbitacin (Cuc) B on thin-layer plates by arrest and compulsive feeding. Six species of diabroticite beetles were about 10 times more responsive to Cuc B than to Cuc E and less responsive to Cuc D, I, and L. Chloroform extracts of 18 species of Cucurbita were developed on thin-layer chromatograms and exposed to diabroticite beetles. The feeding patterns showed pronounced beetle responses to three general Cuc distribution patterns: Cuc B and D as in Cucurbita andreana and C. ecuadorensis; Cuc E and I as in C. okeechobeensis and C. martinezii; and Cuc E glycoside in C. texana. All the diabroticites responded in exactly the same feeding patterns. The results demonstrate a coevolutionary association between the Cucurbitaceae and the Luperini, during which the intensely bitter and toxic Cucs that arose to repel herbivores and protect the plants from attack became specific kairomone feeding stimulants for the beetles.
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Affiliation(s)
- R L Metcalf
- Department of Biology, University of Illinois, Urbana-Champaign, Illinois 61801
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Ramachandra S, Metcalf RA, Fredrickson T, Marti GE, Raveche E. Requirement for increased IL-10 in the development of B-1 lymphoproliferative disease in a murine model of CLL. J Clin Invest 1996; 98:1788-93. [PMID: 8878429 PMCID: PMC507617 DOI: 10.1172/jci118978] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Malignant B-1 cells derived from NZB mice, a murine model of spontaneous autoimmunity and B cell lymphoproliferative disease, produce significantly higher levels of IL-10 mRNA than normal B-1 or B cells. IL-10 may act as an autocrine growth factor for the expansion of malignant B-1 cells. In order to determine if elevated endogenous production of IL-10 was a required element for the malignant transformation of B-1 cells in NZB mice, backcross animals were studied for the linkage between elevated IL-10 expression and the presence of lymphoid malignancy. The phenotypes of aged (NZB x DBA/2)F1 x NZB animals were determined and a strong correlation was found between the elevated levels of IL-10 mRNA and the development of B-1 malignant clones. In contrast, an increased level of IL-10 message was not associated with elevated serum IgM or the presence of anemia or reticulocytosis which is mainly seen in response to autoantibody production. These results indicate that, at least in NZB, the autoimmunity and lymphoproliferation phenotypes are not linked genetically. IL-10 may enhance proliferation and the development of B-1 cell malignancy rather than antibody production by the B-1 cell subpopulation. Thus, IL-10 plays an important role in B-1 malignancies, and downregulation of IL-10 could be a likely site for intervention in B cell malignancies.
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Affiliation(s)
- S Ramachandra
- Department of Pathology, University of Medicine and Dentistry of New Jersey, Newark 07103, USA
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Abstract
The molecular lesions of human familial and common B-CLL remain unknown. As an approach to this problem, aged NZB mice with a B cell lymphoproliferative disorder were chosen as a murine model. Three groups of NZB mice (2 months, 6 months and > 18 months) for a total of nineteen were studied. A complete autopsy including a CBC was performed on each mouse. Spleen cells were immunophenotyped and cell cycle analysis was performed. Spleen weight, peritoneal cell counts and absolute lymphocytes counts were all elevated in the oldest group. All mice showed evidence of extramedulary hematopoiesis and the older group showed lymphocytic infiltrates in the lacrymal glands, kidneys, liver and lungs. Two of the seven aged mice had a malignant lymphoma. One was a marginal zone lymphoma and the other a lymphocytic lymphoma. Splenic immunophenotyping showed a loss of T cells with an increase in B cells as the mice age. Cell cycle analysis revealed hyperdiploidy in all of the aged mice with a decrease in the percentage G0G1 cells. This disease appears to involve an absolute lymphocytosis of the peritoneum and the peripheral blood compartment. This is associated with splenic aneuploidy. The infiltration of the spleen by malignant cells of varying morphology is a late event. The aged NZB mouse continues to be a model for human B-CLL.
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Affiliation(s)
- G E Marti
- Section of Flow and Image Cytometry, Food and Drug Administration, NIH, Bethesda, MD 20892
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Takeshima Y, Inai K, Bennett WP, Metcalf RA, Welsh JA, Yonehara S, Hayashi Y, Fujihara M, Yamakido M, Akiyama M. p53 mutations in lung cancers from Japanese mustard gas workers. Carcinogenesis 1994; 15:2075-9. [PMID: 7955036 DOI: 10.1093/carcin/15.10.2075] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Mustard gas (MG) is a mutagenic and carcinogenic alkylating agent, and is a known risk factor for occupational lung cancer. Our hypothesis is that lung cancers from MG workers contain mutations (G:C to A:T transitions) as the result of MG-produced DNA promutagenic adducts in the p53 tumor suppressor gene. We analyzed 12 primary lung cancers from Japanese MG factory workers and 12 lung cancers from non-exposed individuals. Genomic DNA was isolated from archival paraffin-embedded tissues. Exons 5-8 were amplified by polymerase chain reaction using p53-specific primers, and sequenced by dideoxy termination methods. Six out of 12 lung cancers from MG workers contained a total of eight somatic point mutations: two cases had double G:C to A:T transitions; one had a G:C to T:A transversion; one case had an A:T to G:C transition; and two cases had single base deletions. Four of the six mutated purines occurred on the non-transcribed, DNA-coding strand. Out of 12 unexposed cases, there were six single base mutations in six cancers, and no double mutations. The p53 mutational frequency in the MG-exposed cases is similar to the non-exposed controls and the usual smoking-related lung cancers reported previously. However, the distinctive double mutations (G:C to A:T transition) observed in two cases are unusual and may be related to MG exposure.
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Affiliation(s)
- Y Takeshima
- Laboratory of Human Carcinogenesis, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
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Bennett WP, Colby TV, Travis WD, Borkowski A, Jones RT, Lane DP, Metcalf RA, Samet JM, Takeshima Y, Gu JR. p53 protein accumulates frequently in early bronchial neoplasia. Cancer Res 1993; 53:4817-22. [PMID: 8402667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
p53 mutations are common in human lung cancer and frequently generate levels of p53 protein that are detectable by immunohistochemistry. For this reason, p53 protein accumulation is a candidate biomarker, but little is known about its timing or frequency in multistage bronchial carcinogenesis. We studied human lung tissues containing preinvasive squamous neoplasms from 34 donors with and without lung cancer. Nuclear p53 protein was present in 0% of normal mucosas, 6.7% of squamous metaplasias, 29.5% of mild dysplasias, 26.9% of moderate dysplasias, 59.7% of severe dysplasias, 58.5% of carcinomas in situ, 67.5% of microinvasive carcinomas, and 79.5% of invasive tumors. These data indicate that (a) p53 protein accumulates in about 30% of the earliest recognized neoplastic lesions (i.e., mild dysplasia), (b) there is an increasing frequency of p53 protein accumulation starting with mild dysplasia, and (c) p53 protein accumulates infrequently in normal or metaplastic mucosa. In a subset of six patients whose most advanced lesion was carcinoma in situ without evidence of invasive cancer, p53 protein was detected in 0% of normal mucosas, 8.3% of squamous metaplasias, 37.5% of mild dysplasias, 12.5% of moderate dysplasias, 93.8% of severe dysplasias, and 55% of carcinoma in situ lesions. These data show clearly that p53 alterations can occur before invasion and suggest that the frequency is similar to that observed in the full series. Since two-thirds or more of lung cancers have p53 alterations, the timing and frequency of p53 protein accumulation make the p53 tumor suppressor gene an attractive marker for early diagnosis and evaluation of chemoprevention agents.
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Affiliation(s)
- W P Bennett
- Laboratory of Human Carcinogenesis, National Cancer Institute, Bethesda, Maryland 20892
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50
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Hsu IC, Tokiwa T, Bennett W, Metcalf RA, Welsh JA, Sun T, Harris CC. p53 gene mutation and integrated hepatitis B viral DNA sequences in human liver cancer cell lines. Carcinogenesis 1993; 14:987-92. [PMID: 8389256 DOI: 10.1093/carcin/14.5.987] [Citation(s) in RCA: 192] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A G:C-->T:A mutational hotspot at codon 249 of the p53 tumor suppressor gene has previously been identified in hepatocellular carcinoma (HCC) of patients from Qidong, China and southern Africa in which aflatoxin B1 (AFB1) and hepatitis B virus (HBV) are known synergistic risk factors. We have examined p53 mutation patterns of HCC from geographic areas in which the risk factors vary. Nine HCC lines and four hepatoblastoma lines (HB) were examined for p53 gene mutations and the relationship with HBV infection. Five of the nine HCC lines had homozygous mutation or deletion randomly distributed in exons 6-8, whereas none of the four HB cell lines had p53 mutations. One of the four HB lines (HepG2) had an N-ras mutation at codon 61 position 2. The p53 point mutations in the three HCC cell lines from Japan resulted in the amino acid changes of cysteine for tyrosine in cell line HuH 7 at codon 220 (A:T-->G:C), alanine for glycine in cell line HLF at codon 244 (G:C-->C:G), and serine for arginine in cell line HLE at codon 249 (G:C-->C:G). In addition, the deletion of 18 base pairs from codon 264 position 3 to codon 270 position 1 has resulted in the deletion of Leu-Gly-Arg-Asn-Ser-Phe from the amino acids sequences 256-270 in the Japanese cell line HuH 4. The cell line PLC/PRF/5 that showed p53 mutation at codon 249 (G:C-->T:A) with substitution of serine for arginine was derived from a South African patient. Our results indicate that whereas the p53 gene is not mutated in the HB cell lines, the HCC cell lines frequently contain an abnormal p53 gene. In addition, p53 point mutations were not detected in the four Japanese HCC cell lines that were positive for genomic integration of HBV X-gene and surface antigen gene. The three Japanese HCC cell lines with p53 mutations did not contain HBV sequences, indicating that hepatocarcinogenesis associated with p53 mutation does not require the genomic integration of HBV sequences.
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Affiliation(s)
- I C Hsu
- Department of Pathology, University of Maryland School of Medicine, Baltimore 21201
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