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Focosi D, Franchini M. Impact of pathogen-reduction technologies on COVID-19 convalescent plasma potency. Transfus Clin Biol 2021; 28:132-134. [PMID: 33675992 PMCID: PMC7927574 DOI: 10.1016/j.tracli.2021.02.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/03/2021] [Accepted: 02/20/2021] [Indexed: 12/31/2022]
Abstract
Pathogen reduction technologies (PRT) have been recommended by many regulatory authorities to minimize the residual risk of transfusion-transmitted infections associated with COVID19 convalescent plasma. While its impact on safety and its cost-effectiveness are nowadays well proven, there is theoretical concern that PRT could impact efficacy of convalescent plasma by altering concentration and/or function of the neutralizing antibodies (nAb). We review here the evidence supporting a lack of significant detrimental effect from PRTs on nAbs.
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Affiliation(s)
- D Focosi
- North-Western Tuscany Blood Bank, Pisa University Hospital, via Paradisa 2, 56124 Pisa, Italy.
| | - M Franchini
- Department of Hematology and Transfusion Medicine, Carlo Poma Hospital, Mantua, Italy
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2
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Contemporary resuscitation of hemorrhagic shock: What will the future hold? Am J Surg 2020; 220:580-588. [PMID: 32409009 PMCID: PMC7211588 DOI: 10.1016/j.amjsurg.2020.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/28/2020] [Accepted: 05/07/2020] [Indexed: 02/07/2023]
Abstract
Resuscitation of the critically ill patient with fluid and blood products is one of the most widespread interventions in medicine. This is especially relevant for trauma patients, as hemorrhagic shock remains the most common cause of preventable death after injury. Consequently, the study of the ideal resuscitative product for patients in shock has become an area of great scientific interest and investigation. Recently, the pendulum has swung towards increased utilization of blood products for resuscitation. However, pathogens, immune reactions and the limited availability of this resource remain a challenge for clinicians. Technologic advances in pathogen reduction and innovations in blood product processing will allow us to increase the safety profile and efficacy of blood products, ultimately to the benefit of patients. The purpose of this article is to review the current state of blood product based resuscitative strategies as well as technologic advancements that may lead to safer resuscitation.
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3
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Lanteri MC, Santa-Maria F, Laughhunn A, Girard YA, Picard-Maureau M, Payrat JM, Irsch J, Stassinopoulos A, Bringmann P. Inactivation of a broad spectrum of viruses and parasites by photochemical treatment of plasma and platelets using amotosalen and ultraviolet A light. Transfusion 2020; 60:1319-1331. [PMID: 32333396 PMCID: PMC7317863 DOI: 10.1111/trf.15807] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The INTERCEPT Blood System pathogen reduction technology (PRT), which uses amotosalen and ultraviolet A light treatment (amotosalen/UV-PRT), inactivates pathogens in plasma and platelet components (PCs). This review summarizes data describing the inactivation efficacy of amotosalen/UVA-PRT for a broad spectrum of viruses and parasites. METHODS Twenty-five enveloped viruses, six nonenveloped viruses (NEVs), and four parasites species were evaluated for sensitivity to amotosalen/UVA-PRT. Pathogens were spiked into plasma and PC at high titers. Samples were collected before and after PRT and assessed for infectivity with cell cultures or animal models. Log reduction factors (LRFs) were defined as the difference in infectious titers before and after amotosalen/UV-PRT. RESULTS LRFs of ≥4.0 log were reported for 19 pathogens in plasma (range, ≥4.0 to ≥7.6), 28 pathogens in PC in platelet additive solution (PC-PAS; ≥4.1-≥7.8), and 14 pathogens in PC in 100% plasma (PC-100%; (≥4.3->8.4). Twenty-five enveloped viruses and two NEVs were sensitive to amotosalen/UV-PRT; LRF ranged from >2.9 to ≥7.6 in plasma, 2.4 or greater to greater than 6.9 in PC-PAS and >3.5 to >6.5 in PC-100%. Infectious titers for four parasites were reduced by >4.0 log in all PC and plasma (≥4.9 to >8.4). CONCLUSION Amotosalen/UVA-PRT demonstrated effective infectious titer reduction for a broad spectrum of viruses and parasites. This confirms the capacity of this system to reduce the risk of viral and parasitic transfusion-transmitted infections by plasma and PCs in various geographies.
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Affiliation(s)
- Marion C Lanteri
- Department of Scientific Affairs, Cerus Corporation, Concord, California, USA
| | | | - Andrew Laughhunn
- Department of Microbiology, Cerus Corporation, Concord, California, USA
| | - Yvette A Girard
- Department of Microbiology, Cerus Corporation, Concord, California, USA
| | | | - Jean-Marc Payrat
- Department of Scientific Affairs, Cerus Europe BV, Amersfoort, The Netherlands
| | - Johannes Irsch
- Department of Scientific Affairs, Cerus Europe BV, Amersfoort, The Netherlands
| | | | - Peter Bringmann
- Department of Microbiology, Cerus Corporation, Concord, California, USA
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4
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Atreya C, Glynn S, Busch M, Kleinman S, Snyder E, Rutter S, AuBuchon J, Flegel W, Reeve D, Devine D, Cohn C, Custer B, Goodrich R, Benjamin RJ, Razatos A, Cancelas J, Wagner S, Maclean M, Gelderman M, Cap A, Ness P. Proceedings of the Food and Drug Administration public workshop on pathogen reduction technologies for blood safety 2018 (Commentary, p. 3026). Transfusion 2019; 59:3002-3025. [PMID: 31144334 PMCID: PMC6726584 DOI: 10.1111/trf.15344] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/06/2019] [Accepted: 05/06/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Chintamani Atreya
- US Food and Drug Administration, Center for Biologics Evaluation and ResearchOffice of Blood Research and ReviewSilver SpringMaryland
| | - Simone Glynn
- National Heart Lung and Blood InstituteBethesdaMarylandUSA
| | | | | | - Edward Snyder
- Blood BankYale‐New Haven HospitalNew HavenConnecticut
| | - Sara Rutter
- Department of Pathology and Laboratory MedicineYale School of MedicineNew HavenConnecticut
| | - James AuBuchon
- Department of PathologyDartmouth‐Hitchcock Medical CenterLebanonNew Hampshire
| | - Willy Flegel
- Department of Transfusion MedicineNIH Clinical CenterBethesdaMaryland
| | - David Reeve
- Blood ComponentsAmerican Red CrossRockvilleMaryland
| | - Dana Devine
- Department of Lab Medicine and PathologyUniversity of Minnesota Medical CenterMinneapolisMinnesota
| | - Claudia Cohn
- Department of Lab Medicine and PathologyUniversity of Minnesota Medical CenterMinneapolisMinnesota
| | - Brian Custer
- Vitalant Research InstituteSan FranciscoCalifornia
| | - Raymond Goodrich
- Department of Microbiology, Immunology and PathologyColorado State UniversityFort CollinsColorado
| | | | | | - Jose Cancelas
- Hoxworth Blood CenterUniversity of Cincinnati HealthCincinnatiOhio
| | | | - Michelle Maclean
- The Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST)University of StrathclydeGlasgowScotland
| | - Monique Gelderman
- Department of HematologyCenter for Biologics Evaluation and Research, US Food and Drug AdministrationSilver SpringMaryland
| | - Andrew Cap
- U.S. Army Institute of Surgical ResearchSan AntonioTexas
| | - Paul Ness
- Blood BankJohns Hopkins HospitalBaltimoreMaryland
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5
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Saadah NH, Schipperus MR, Wiersum-Osselton JC, van Kraaij MG, Caram-Deelder C, Beckers EAM, Leyte A, Rondeel JMM, de Vooght KMK, Weerkamp F, Zwaginga JJ, van der Bom JG. Transition from fresh frozen plasma to solvent/detergent plasma in the Netherlands: comparing clinical use and transfusion reaction risks. Haematologica 2019; 105:1158-1165. [PMID: 31273090 PMCID: PMC7109716 DOI: 10.3324/haematol.2019.222083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 06/26/2019] [Indexed: 11/24/2022] Open
Abstract
Plasma transfusion is indicated for replenishment of coagulative proteins to stop or prevent bleeding. In 2014, the Netherlands switched from using ~300mL fresh frozen plasma (FFP) units to using 200mL Omniplasma, a solvent/detergent treated pooled plasma (SD plasma), units. We evaluated the effect of the introduction of SD plasma on clinical plasma use, associated bleeding, and transfusion reaction incidences. Using diagnostic data from six Dutch hospitals, national blood bank data, and national hemovigilance data for 2011 to 2017, we compared the plasma/red blood cell (RBC) units ratio (f) and the mean number of plasma and RBC units transfused for FFP (~300mL) and SD plasma (200mL) for various patient groups, and calculated odds ratios comparing their associated transfusion reaction risks. Analyzing 13,910 transfusion episodes, the difference (Δf = fSD - fFFP) in mean plasma/RBC ratio (f) was negligible (Δfentire_cohort = 0.01 [95% confidence interval (CI): −0.02 - 0.05]; P=0.48). SD plasma was associated with fewer RBC units transfused per episode in gynecological (difference of mean number of units −1.66 [95% CI: −2.72, −0.61]) and aneurysm (−0.97 [−1.59, −0.35]) patients. SD plasma was further associated with fewer anaphylactic reactions than FFP (odds ratio 0.37 [0.18, 0.77; P<0.01]) while the differences for most transfusion reactions were not statistically significant. SD plasma units, despite being one third smaller in volume than FFP units, are not associated with a higher plasma/RBC ratio. SD plasma is associated with fewer anaphylactic reactions than FFP plasma/RBC units ratio.
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Affiliation(s)
- Nicholas H Saadah
- Jon J. van Rood Centre for Clinical Transfusion Research, Sanquin Research, Leiden.,Deptartment of Clinical Epidemiology, Leiden University Medical Centre, Leiden.,TRIP, National Hemovigilance & Biovigilance Office, Leiden
| | - Martin R Schipperus
- TRIP, National Hemovigilance & Biovigilance Office, Leiden.,Haga Teaching Hospital, Department of Haematology, The Hague
| | | | - Marian G van Kraaij
- Donor Affairs, Sanquin Blood Supply, Leiden.,Department of Transfusion Medicine, Sanquin Blood Supply, Amsterdam
| | - Camila Caram-Deelder
- Jon J. van Rood Centre for Clinical Transfusion Research, Sanquin Research, Leiden.,Deptartment of Clinical Epidemiology, Leiden University Medical Centre, Leiden
| | - Erik A M Beckers
- Department of Haematology, Maastricht University Medical Centre, Maastricht
| | - Anja Leyte
- Department of Clinical Chemistry, OLVG Location East, Amsterdam
| | | | - Karen M K de Vooght
- Department of Clinical Chemistry, University Medical Centre Utrecht, Utrecht
| | - Floor Weerkamp
- Department of Clinical Chemistry, Maasstad Hospital, Rotterdam
| | - Jaap Jan Zwaginga
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Centre, Leiden, the Netherlands
| | - Johanna G van der Bom
- Jon J. van Rood Centre for Clinical Transfusion Research, Sanquin Research, Leiden .,Deptartment of Clinical Epidemiology, Leiden University Medical Centre, Leiden
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6
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Cushing MM, Pagano MB, Jacobson J, Schwartz J, Grossman BJ, Kleinman S, Han MA, Cohn CS. Pathogen reduced plasma products: a clinical practice scientific review from the AABB. Transfusion 2019; 59:2974-2988. [DOI: 10.1111/trf.15435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 06/01/2019] [Accepted: 06/03/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Melissa M. Cushing
- Department of Pathology and Laboratory MedicineWeill Cornell Medicine New York New York
| | - Monica B. Pagano
- Department of Laboratory MedicineUniversity of Washington Medical Center Seattle Washington
| | | | - Joseph Schwartz
- Department of Pathology & Cell BiologyColumbia University Vagelos College of Physicians and Surgeons New York New York
| | - Brenda J. Grossman
- Department of Pathology & ImmunologyWashington University School of Medicine in St. Louis St. Louis Missouri
| | - Steven Kleinman
- Department of Pathology & Laboratory MedicineThe University of British Columbia Vancouver British Columbia
| | - Mi Ah Han
- Department of Preventive MedicineCollege of Medicine Chosun University Gwangju Republic of Korea
| | - Claudia S. Cohn
- Department of Laboratory Medicine and PathologyUniversity of Minnesota Minneapolis Minnesota
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7
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Garraud O, Coppo P. Types of fresh plasma with focus on therapeutic plasma exchange. Transfus Apher Sci 2019; 58:258-261. [DOI: 10.1016/j.transci.2019.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Ravanat C, Dupuis A, Marpaux N, Naegelen C, Mourey G, Isola H, Laforêt M, Morel P, Gachet C. In vitro
quality of amotosalen‐
UVA
pathogen‐inactivated mini‐pool plasma prepared from whole blood stored overnight. Vox Sang 2018; 113:622-631. [DOI: 10.1111/vox.12697] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 06/26/2018] [Accepted: 06/28/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Catherine Ravanat
- Université de Strasbourg INSERM EFS Grand‐Est BPPS UMR‐S1255 FMTS Strasbourg France
| | - Arnaud Dupuis
- Université de Strasbourg INSERM EFS Grand‐Est BPPS UMR‐S1255 FMTS Strasbourg France
| | | | | | - Guillaume Mourey
- EFS Bourgogne‐Franche‐Comté UMR1098 Besançon France
- Université Bourgogne Franche Comté INSERM EFS Bourgogne‐Franche‐Comté UMR1098 Besançon France
| | - Herve Isola
- Université de Strasbourg INSERM EFS Grand‐Est BPPS UMR‐S1255 FMTS Strasbourg France
| | - Michel Laforêt
- Université de Strasbourg INSERM EFS Grand‐Est BPPS UMR‐S1255 FMTS Strasbourg France
| | - Pascal Morel
- EFS Bourgogne‐Franche‐Comté UMR1098 Besançon France
- Université Bourgogne Franche Comté INSERM EFS Bourgogne‐Franche‐Comté UMR1098 Besançon France
| | - Christian Gachet
- Université de Strasbourg INSERM EFS Grand‐Est BPPS UMR‐S1255 FMTS Strasbourg France
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9
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Garraud O, Aubron C, Ozier Y, Coppo P, Tissot JD. Plasma for direct therapeutic use, for today and tomorrow: A short critical overview. Transfus Clin Biol 2018; 25:281-286. [PMID: 30131289 DOI: 10.1016/j.tracli.2018.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Plasma for direct therapeutic use is a fast-evolving blood component in terms of its production and presentation. More than a dozen forms are available worldwide, which is often overlooked since most countries apply policies making only one or very few forms available for treating patients in need. It is most often reserved for the same three clinical indications, i.e. overall clotting-factor deficiency, reversal of vitamin K antagonists in the context of active bleeding or prior to urgent surgery, and therapeutic plasma exchange. The level of evidence is often less robust than generally acknowledged for such major indications while novel indications are tending to emerge in medical and trauma settings. This short review explores classical views and new prospects opened up by novel presentations and statuses for therapeutic plasma.
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Affiliation(s)
- O Garraud
- EA3064, university of Lyon, faculty of medicine, 42023 Saint-Étienne cedex 2, France; Institut national de la transfusion sanguine, 75039 Paris cedex 15, France.
| | - C Aubron
- Medical intensive care unit, centre hospitalier et universitaire de Brest, CHRU de Brest, boulevard Tanguy-Prigent, 29609 Brest, France; Université de Bretagne Occidentale, 29009 Brest, France
| | - Y Ozier
- Medical intensive care unit, centre hospitalier et universitaire de Brest, CHRU de Brest, boulevard Tanguy-Prigent, 29609 Brest, France; Université de Bretagne Occidentale, 29009 Brest, France
| | - P Coppo
- CNR-MAT, groupe hospitalier Cochin, AP-HP, 184, rue du Faubourg-Saint-Antoine, 75571 Paris cedex, France; Université Paris Pierre-et-Marie-Curie, 75006 Paris, France; Faculté de médecine de Sorbonne université, 91-105, boulevard de l'Hôpital, 75013 Paris, France; Inserm_U1009, Institut Gustave Roussy, rue Edouard Vaillant, 94800 Villejuif, France
| | - J-D Tissot
- Faculté de Biologie et de Médecine de Lausanne, 1011 Lausanne, Switzerland
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10
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Garraud O. Are all therapeutic plasma preparations the same: Is it worth assessing them in clinical trials? Transfus Apher Sci 2017; 56:920-923. [DOI: 10.1016/j.transci.2017.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Nussbaumer W, Amato M, Schennach H, Astl M, Chen CY, Lin JS, Corash L, Benjamin RJ. Patient outcomes and amotosalen/UVA-treated platelet utilization in massively transfused patients. Vox Sang 2017; 112:249-256. [DOI: 10.1111/vox.12489] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/23/2016] [Accepted: 12/28/2016] [Indexed: 11/28/2022]
Affiliation(s)
- W. Nussbaumer
- Central Institute for Blood Transfusion and Immunology; Medical University Hospital Innsbruck; Innsbruck Austria
| | - M. Amato
- Central Institute for Blood Transfusion and Immunology; Medical University Hospital Innsbruck; Innsbruck Austria
| | - H. Schennach
- Central Institute for Blood Transfusion and Immunology; Medical University Hospital Innsbruck; Innsbruck Austria
| | - M. Astl
- Central Institute for Blood Transfusion and Immunology; Medical University Hospital Innsbruck; Innsbruck Austria
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12
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Theusinger OM, Goslings D, Studt JD, Brand-Staufer B, Seifert B, Spahn DR, Frey BM. Quarantine versus pathogen-reduced plasma-coagulation factor content and rotational thromboelastometry coagulation. Transfusion 2016; 57:637-645. [DOI: 10.1111/trf.13935] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 10/12/2016] [Accepted: 10/12/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Oliver M. Theusinger
- Institute of Anesthesiology, University and University Hospital Zurich; Zurich Switzerland
| | - David Goslings
- Regional Blood Transfusion Service, Zurich Swiss Red Cross; Zurich Switzerland
| | - Jan-Dirk Studt
- Division of Hematology; University and University Hospital Zurich; Zurich Switzerland
| | | | - Burkhardt Seifert
- Department of Biostatistics, Epidemiology; Biostatistics, and Prevention Institute, University of Zurich; Zurich Switzerland
| | - Donat R. Spahn
- Institute of Anesthesiology, University and University Hospital Zurich; Zurich Switzerland
| | - Beat M. Frey
- Regional Blood Transfusion Service, Zurich Swiss Red Cross; Zurich Switzerland
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13
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Corash L, Benjamin RJ. The role of hemovigilance and postmarketing studies when introducing innovation into transfusion medicine practice: the amotosalen-ultraviolet A pathogen reduction treatment model. Transfusion 2016; 56 Suppl 1:S29-38. [PMID: 27001358 DOI: 10.1111/trf.13530] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Innovations in transfusion medicine require randomized controlled clinical trials (RCTs) to demonstrate safety and efficacy before approval; however, these studies are costly and limited in scope and may be underpowered to detect rare adverse events (AEs). Regulatory agencies, such as the Food and Drug Administration, require postmarketing surveillance, hemovigilance (HV), and controlled Phase IV studies to monitor performance and confirm safety. STUDY DESIGN AND METHODS The INTERCEPT Blood System (IBS) is an illustrative model for implementation of a transformative technology for which sponsored active HV, regulatory authority HV, and Phase IV studies were used to extend preapproval efficacy and safety information. RESULTS After CE mark registration in Europe, 13,644 patients received 76,346 IBS components prepared largely without gamma irradiation or bacterial screening in sponsored active HV studies documenting no increased incidence of AEs compared to historical controls and no increased component utilization. National HV systems in France and Switzerland specifically demonstrated no transfusion-associated graft-versus-host disease or increased incidence of transfusion-associated acute lung injury, after transfusion of 317,669 IBS platelet (PLT) components, and significant reduction of transfusion-transmitted bacterial infection as well as acute transfusion reactions. Cumulatively, these studies provide new information about safety and efficacy of IBS PLT and plasma components not obtainable from RCTs. CONCLUSION Although inherently different from RCTs, properly designed postmarketing studies are informative regarding the safety and efficacy of innovative transfusion technologies in large patient populations under conditions of routine use.
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14
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Ohlmann P, Hechler B, Chafey P, Ravanat C, Isola H, Wiesel ML, Cazenave JP, Gachet C. Hemostatic properties and protein expression profile of therapeutic apheresis plasma treated with amotosalen and ultraviolet A for pathogen inactivation. Transfusion 2016; 56:2239-47. [PMID: 27250038 DOI: 10.1111/trf.13670] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 04/21/2016] [Accepted: 04/21/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND The INTERCEPT Blood System (IBS) using amotosalen-HCl and ultraviolet (UV)A inactivates a large spectrum of microbial pathogens and white blood cells in therapeutic plasma. Our aim was to evaluate to what extent IBS modifies the capacity of plasma to generate thrombin and induces qualitative or quantitative modifications of plasma proteins. STUDY DESIGN AND METHODS Plasma units from four donors were collected by apheresis. Samples were taken before (control [CTRL]) and after IBS treatment and stored at -80°C until use. The activities of plasma coagulation factors and inhibitors and the thrombin generation potential were determined using assays measuring clotting times and the calibrated automated thrombogram (CAT), respectively. The proteomic profile of plasma proteins was examined using a two-dimensional differential in-gel electrophoresis (2D-DIGE) method. RESULTS Nearly all of the procoagulant and antithrombotic factors tested retained at least 78% of their initial pre-IBS activity. Only FVII and FVIII displayed a lower level of conservation (67%), which nevertheless remained within the reference range for conventional plasma coagulation factors. The thrombin generation profile of plasma was conserved after IBS treatment. Among the 1331 protein spots revealed by 2D-DIGE analysis, only four were differentially expressed in IBS plasma compared to CTRL plasma and two were identified by mass spectrometric analysis as transthyretin and apolipoprotein A1. CONCLUSION The IBS technique for plasma moderately decreases the activities of plasma coagulation factors and antithrombotic proteins, with no impact on the thrombin generation potential of plasma and very limited modifications of the proteomic profile.
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Affiliation(s)
- Philippe Ohlmann
- UMR_S949, INSERM, Strasbourg, France.,EFS-Alsace-Lorraine-Champagne-Ardenne, Strasbourg, France.,Université de Strasbourg, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Béatrice Hechler
- UMR_S949, INSERM, Strasbourg, France.,EFS-Alsace-Lorraine-Champagne-Ardenne, Strasbourg, France.,Université de Strasbourg, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Philippe Chafey
- Plateforme Protéomique 3P5, Université Paris Descartes, Sorbonne Paris Cité,INSERM, U1016, Institut Cochin, Paris, France.,CNRS, UMR 8104, Paris, France
| | - Catherine Ravanat
- UMR_S949, INSERM, Strasbourg, France.,EFS-Alsace-Lorraine-Champagne-Ardenne, Strasbourg, France.,Université de Strasbourg, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
| | - Hervé Isola
- EFS-Alsace-Lorraine-Champagne-Ardenne, Strasbourg, France
| | | | | | - Christian Gachet
- UMR_S949, INSERM, Strasbourg, France.,EFS-Alsace-Lorraine-Champagne-Ardenne, Strasbourg, France.,Université de Strasbourg, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg, Strasbourg, France
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