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Wilmot HV, Gray E. Enabling accurate measurement of activated factor XI (FXIa) in therapeutic immunoglobulin products. Vox Sang 2020; 116:656-664. [PMID: 33277936 PMCID: PMC8359487 DOI: 10.1111/vox.13046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/05/2020] [Accepted: 11/16/2020] [Indexed: 11/29/2022]
Abstract
Background and objectives In 2010, an intravenous immunoglobulin (IVIG) product was removed from the market due to an association with serious thromboembolic events. Investigations revealed that factor XIa (FXIa) was present as a process‐related impurity. This study investigated the ability of two commercial FXIa assays to measure FXIa in immunoglobulin preparations and conducted a survey of FXIa activity in marketed immunoglobulin products. Materials and methods Factor XIa assays were modified to include spiking of samples with FXIa before testing. An immunoglobulin product and its excipient were used to assess the ability of the assays to recover the spiked FXIa levels. Results The Biophen FXIa assay required a high pre‐dilution of the sample to obtain statistically valid results and complete FXIa recovery. The ROX FXIa assay was more sensitive, giving statistically valid results at a lower sample pre‐dilution and FXIa spike level. This modified ROX FXIa assay was used to assay 17 lots of immunoglobulin products for FXIa. Two product lots had measurable FXIa levels without the need for spiking. A further 3 lots produced detectable but not statistically valid FXIa results when left unspiked. Spiking produced statistically valid assays and recoveries above 100%, demonstrating inherent FXIa. Conclusion This study shows marketed immunoglobulin products can contain detectable levels of FXIa. Spiking brings the FXIa levels into the quantifiable range of the assay, allowing measurement of inherent FXIa. Accurate measurement is important to inform on ‘safe’ levels of FXIa in these products and allow future safety guidelines to be set.
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Affiliation(s)
- Helen V Wilmot
- Haemostasis Section, Biotherapeutics, National Institute for Biological Standards and Control (NIBSC), South Mimms, Hertfordshire, UK
| | - Elaine Gray
- Haemostasis Section, Biotherapeutics, National Institute for Biological Standards and Control (NIBSC), South Mimms, Hertfordshire, UK
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Alsina L, Mohr A, Montañés M, Oliver X, Martín E, Pons J, Drewe E, Papke J, Günther G, Chee R, Gompels M. Surveillance study on the tolerability and safety of Flebogamma ® DIF (10% and 5% intravenous immunoglobulin) in adult and pediatric patients. Pharmacol Res Perspect 2018; 5. [PMID: 28971614 PMCID: PMC5625155 DOI: 10.1002/prp2.345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 11/29/2022] Open
Abstract
Direct comparisons of tolerability and safety of concentrated intravenous immunoglobulin (IVIG) versus less concentrated products are scarce. In this postauthorization, prospective, observational, multicenter study, a systematic comparison of 10% and 5% concentrations of Flebogamma® DIF IVIG was performed in both adult and pediatric patients treated with the studied IVIG products according to the approved indications under routine conditions. Dose of product administered, adverse events (AEs), physical assessments, laboratory tests, and concomitant therapy were analyzed. Patient recruitment in the 10% and 5% product groups was, respectively, 34 (32 analyzed, 13 of them children, receiving 130 IVIG infusions) and 35 (34 analyzed, receiving 135 IVIG infusions). Twenty‐four infusions (18.5%; 95% CI: 11.8, 25.1) with the 10% product and 3 (2.2%; 95% CI: −0.3, 4.7) with the 5% product were associated with potentially treatment‐related AEs (P < 0.0001). Nine patients (28.1%) infused with the 10% product and 3 (8.8%) infused with the 5% product presented, respectively, 33 and 8 treatment‐related AEs (of which 7 and 6, respectively, were serious AEs, experienced by only three hypersensitive patients). The profile of AEs occurring with the infusion of 10% and 5% products were comparable. The most frequent treatment‐related AEs were headache (n = 17, 3 patients; 15 episodes, 1 patient) and pyrexia (n = 6, 4 patients). In conclusion, no unpredictable risk was detected for both Flebogamma DIF 10% and 5% concentrations, which were therefore deemed as safe and well‐tolerated IVIG in the studied population. The frequency of infusions associated with treatment‐related AEs was lower with the 5% concentration.
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Affiliation(s)
- Laia Alsina
- Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Institut de Recerca Pediàtrica Hospital Sant Joan de Déu, Passeig de Sant, Joan de Déu 2, 08950, Esplugues de Llobregat, Barcelona, Spain
| | - Andreas Mohr
- Hematology and Oncology, OncoResearch Lerchenfeld, Lerchenfeld 14, 22081, Hamburg, Germany
| | - Maria Montañés
- Pharmacovigilance Department, Instituto Grifols S.A., Avinguda de la Generalitat 152-158, 08174, Sant Cugat del Vallès, Barcelona, Spain
| | - Xènia Oliver
- Pharmacovigilance Department, Instituto Grifols S.A., Avinguda de la Generalitat 152-158, 08174, Sant Cugat del Vallès, Barcelona, Spain
| | - Esperanza Martín
- Pneumology Service, Hospital Sant Joan de Déu, Fundació Althaia. Carrer Dr. Joan Soler, s/n, 08243, Manresa, Spain
| | - Jaime Pons
- Immunology Service, Hospital Son Espases, Carrer de Valldemossa 79, 07120, Palma de Mallorca, Spain
| | - Elizabeth Drewe
- Clinical Immunology and Allergy Department, Nottingham University Hospitals - QMC Campus, Hucknall Road, Nottingham, NG5 1PB, UK
| | - Jens Papke
- Practice and Day Clinic for Internal Medicine and Oncology, Rosa-Luxemburg-Straße 6, 01844, Neustadt in Sachsen, Germany
| | - Georg Günther
- Medical Healthcare Centre for Blood and Cancer Diseases, Kurfürstenstraße 20, D-14467, Potsdam, Germany
| | - Ronnie Chee
- Clinical Immunology Department, Royal Free London NHS Foundation Trust, 17 Lyndhurst Gardens, London, NW3 5NU, UK
| | - Mark Gompels
- Immunology and Allergy Department, Southmead Hospital, Dorian Way, Westbury-on-Trym, Bristol, BS10 5NB, UK
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Imbach P. Historical Aspects of Polyclonal IgG Preparations. ANTIBODY THERAPY 2018. [PMCID: PMC7123136 DOI: 10.1007/978-3-319-68038-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Today we can choose between several polyclonal IgG products for both replacement and immunomodulation. However, it was a long way to go to reach this stage. In this chapter, we try to illustrate the major stages of IgG product development which began more than 70 years ago.
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Affiliation(s)
- Paul Imbach
- Department of Pediatrics, Medical Faculty of the University of Basel, Basel, Switzerland
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Amiral J, Seghatchian J. Blood derived products in pediatrics: New laboratory tools for optimizing potency assignment and reducing side effects. Transfus Apher Sci 2017; 56:107-117. [PMID: 28343935 DOI: 10.1016/j.transci.2017.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Neonates and children can develop rare bleeding disorders due to congenital/acquired coagulation Factor deficiencies, or allo-immune/autoimmune complications, or can undergo surgeries at high haemorrhagic risk. They then need specialized transfusion of blood components/products, or purified blood extracted products or recombinant proteins. Blood-derived therapies conventionally used for management of affected infants with genetic/acquired deficiencies, bleeding problems (coagulation Factor reduced or missing) or thrombotic disorders (reduced or missing anticoagulant proteins) pose some additional risks. These remedial therapies can cause tolerance when used very early in life and, sometimes needed, repeatedly. The introduction of recombinant proteins has allowed manufacturers to produce large amounts of the proteins usually present at very low concentration in blood. This has also changed the risk pattern of plasma-extracted products, especially in terms of continual reduction of viral transmission. Many efforts have been made over these past decades to reduce the risks associated with the use of all these products in terms of viral and bacterial safety, as well as immune disorders but they are not the objective of this article. Other associated side effects are the presence of undesired activities in blood products, which can produce thrombotic events or adverse reactions. The progressive introduction of blood derived products has greatly improved the prognosis and quality of life of affected patients. This concerns whole blood, but also blood cell concentrates, mainly platelets and red blood cells, plasma, while the blood extracted products are increasingly replaced by recombinant proteins. All these therapeutic products, i.e. blood extracted drugs, improve health and quality of life for hemophiliac's A or B, or patients with auto/allo-immune thrombocytopenias or with rare bleeding disorders, and those with thrombotic events occurring in childhood, which are mainly due to Protein C or Protein S deficiencies (congenital or acquired). Progress in analytical methods and biotechnology allow better control of the manufacturing processes for all blood derived or plasma extracted products and recombinant proteins, and contribute to improved manufacturing processes to minimize the occurrence of side effects. These adverse events can be due to the aging of the blood cell concentrate with release of their granule content, and generation of EVs, which can produce anaphylactic reactions and risk of thrombosis, but also to the presence of activated coagulation Factors in purified products, such as Factor Xia as recently identified in immunoglobulin concentrates. Characterization and measurement of contaminant products is of special usefulness during product preparation and for optimization of manufacturing processes for purified extracted products, but also for recombinant proteins. The pharmaceutical industry introduces these new methods for validating manufacturing processes, or for quality control assessments. The objective is first to warrant the full quality and safety of the lots produced, and assure the highest efficacy with the lowest risks when used in patients. For cell concentrates and fresh blood, storage conditions are critical and measurement of analytes such as EVs or Annexin V allows evaluation of quality of each individual transfused pouch. In addition to all the rules around viral and bacterial transmission risk, and immune tolerance, our available laboratory methods contribute to reducing the side effects of blood cell concentrates and derived plasma products, as well as those of the therapeutic recombinant proteins.
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Affiliation(s)
- Jean Amiral
- SH-Consulting, Andrésy, France; Scientific and Technical Advisor for Hyphen BioMed, Sysmex Group, Neuville sur Oise, France.
| | - Jerard Seghatchian
- International Consultancy in Blood Components Quality/Safety Improvement, Audit/Inspection and DDR Strategies, London, UK.
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Park DH, Kang GB, Kang DE, Hong JW, Lee MG, Kim KY, Han JW. A new manufacturing process to remove thrombogenic factors (II, VII, IX, X, and XI) from intravenous immunoglobulin gamma preparations. Biologicals 2016; 45:1-8. [PMID: 27876270 DOI: 10.1016/j.biologicals.2016.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 10/24/2016] [Accepted: 11/07/2016] [Indexed: 11/28/2022] Open
Abstract
Coagulation factors (II, VII, IX, X, and particularly XIa) remaining in high concentrations in intravenous immunoglobulin (IVIG) preparations can form thrombi, causing thromboembolic events, and in serious cases, result in death. Therefore, manufacturers of biological products must investigate the ability of their production processes to remove procoagulant activities. Previously, we were able to remove coagulation factors II, VII, IX, and X from our IVIG preparation through ethanol precipitation, but factor XIa, which plays an important role in thrombosis, remained in the intermediate products. Here, we used a chromatographic process using a new resin that binds with high capacity to IgG and removes procoagulant activities. The procoagulant activities were reduced to low levels as determined by the thrombin generation assay: <1.56 mIU/mL, chromogenic FXIa assay: <0.16 mIU/mL, non-activated partial thromboplastin time (NaPTT): >250 s, FXI/FXIa ELISA: <0.31 ng/mL. Even after spiking with FXIa at a concentration 32.5 times higher than the concentration in normal specimens, the procoagulant activities were below the detection limit (<0.31 ng/mL). These results demonstrate the ability of our manufacturing process to remove procoagulant activities to below the detection limit (except by NaPTT), suggesting a reduced risk of thromboembolic events that maybe potentially caused by our IVIG preparation.
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Affiliation(s)
- Dong Hwarn Park
- Green Cross Corp., Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Gil Bu Kang
- Green Cross Corp., Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Dae Eun Kang
- Green Cross Corp., Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Jeung Woon Hong
- Green Cross Corp., Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Min Gyu Lee
- Research Center for Epigenome Regulation, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ki Yong Kim
- Green Cross Corp., Ihyeon-ro 30 beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea.
| | - Jeung Whan Han
- Research Center for Epigenome Regulation, School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Ammann EM, Haskins CB, Fillman KM, Ritter RL, Gu X, Winiecki SK, Carnahan RM, Torner JC, Fireman BH, Jones MP, Chrischilles EA. Intravenous immune globulin and thromboembolic adverse events: A systematic review and meta-analysis of RCTs. Am J Hematol 2016; 91:594-605. [PMID: 26973084 DOI: 10.1002/ajh.24358] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 03/07/2016] [Indexed: 01/25/2023]
Abstract
Prior case reports and observational studies indicate that intravenous immune globulin (IVIg) products may cause thromboembolic events (TEEs), leading the FDA to require a boxed warning in 2013. The effect of IVIg treatment on the risk of serious TEEs (acute myocardial infarction, ischemic stroke, or venous thromboembolism) was assessed using adverse event data reported in randomized controlled trials (RCTs) of IVIg. RCTs of IVIg in adult patients from 1995 to 2015 were identified from Pubmed, Embase, ClinicalTrials.Gov, and two large prior reviews of IVIg's therapeutic applications. Trials at high risk of detection or reporting bias for serious adverse events were excluded. 31 RCTs with a total of 4,129 participants (2,318 IVIg-treated, 1,811 control) were eligible for quantitative synthesis. No evidence was found of increased TEE risk among IVIg-treated patients compared with control patients (odds ratio = 1.10, 95% CI: 0.44, 2.88; risk difference = 0.0%, 95% CI: -0.7%, 0.7%, I(2) = 0%). No significant increase in risk was found when arterial and venous TEEs were analyzed as separate endpoints. Trial publications provided little specific information concerning the methods used to ascertain potential adverse events. Care should be taken in extrapolating the results to patients with higher baseline risks of TEE. Am. J. Hematol. 91:594-605, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Eric M Ammann
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Cole B Haskins
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Kelsey M Fillman
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Rebecca L Ritter
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Xiaomei Gu
- Hardin Library for the Health Sciences, University of Iowa, Iowa City, Iowa
| | - Scott K Winiecki
- Office of Biostatistics and Epidemiology, Center for Biologics Evaluation & Research, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Ryan M Carnahan
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - James C Torner
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa
| | - Bruce H Fireman
- Division of Research, Kaiser Permanente Northern California, Oakland, California
| | - Michael P Jones
- Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa
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Oviedo AE, Bernardi ME, Guglielmone HA, Vitali MS. Absence of in vitro Procoagulant Activity in Immunoglobulin Preparations due to Activated Coagulation Factors. Transfus Med Hemother 2016; 42:397-402. [PMID: 26733772 DOI: 10.1159/000440824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 05/04/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Immunoglobulin (IG) products, including intravenous (IVIG) or subcutaneous (SCIG) immunoglobulins are considered safe and effective for medical therapy; however, a sudden and unexpected increase in thromboembolic events (TE) after administration of certain batches of IVIG products has been attributed to the presence of activated coagulation factors, mainly factor XIa. Our aims were to examine the presence of enduring procoagulant activity during the manufacturing process of IGs, with special focus on monitoring factor XIa, and to evaluate the presence of in vitro procoagulant activity attributed to coagulation factors in different lots of IVIG and SCIG. METHODS Samples of different steps of IG purification, 19 lots of IVIG and 9 of SCIG were analyzed and compared with 1 commercial preparation of IVIG and 2 of SCIG, respectively. Factors II, VII, IX, XI and XIa and non-activated partial thromboplastin time (NAPTT) were assayed. RESULTS The levels of factors II, VII, IX, X and XI were non-quantifiable once fraction II had been re-dissolved and in all analyzed lots of IVIG and SCIG. The level of factor XIa at that point was under the detection limits of the assay, and NAPTT yielded values greater than the control during the purification process. In SCIG, we detected higher concentrations of factor XIa in the commercial products, which reached values up to 5 times higher than the average amounts found in the 9 batches produced by UNC-Hemoderivados. Factor XIa in commercial IVIG reached levels slightly higher than those of the 19 batches produced by UNC-Hemoderivados. CONCLUSION IVIG and SCIG manufactured by UNC-Hemoderivados showed a lack of thrombogenic potential, as demonstrated not only by the laboratory data obtained in this study but also by the absence of any reports of TE registered by the post marketing pharmacovigilance department.
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Affiliation(s)
- Adriana E Oviedo
- Área de Desarrollo de Productos y Procesos, Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María E Bernardi
- Área de Desarrollo de Productos y Procesos, Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Hugo A Guglielmone
- Área de Desarrollo de Productos y Procesos, Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Córdoba, Argentina; Departamento de Bioquímica Clínica (CIBICI-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María S Vitali
- Área de Desarrollo de Productos y Procesos, Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Córdoba, Argentina
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Vargas M, Segura Á, Wu YW, Herrera M, Chou ML, Villalta M, León G, Burnouf T. Human plasma-derived immunoglobulin G fractionated by an aqueous two-phase system, caprylic acid precipitation, and membrane chromatography has a high purity level and is free of detectable in vitro thrombogenic activity. Vox Sang 2014; 108:169-77. [PMID: 25469648 DOI: 10.1111/vox.12209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/17/2014] [Accepted: 09/17/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Instituto Clodomiro Picado has developed an immunoglobulin G (IgG) plasma fractionation process combining a polyethylene glycol/phosphate aqueous two-phase system (ATPS), caprylic acid precipitation and anion-exchange membrane chromatography. We evaluated the purity and in vitro thrombogenicity of such IgG, in line with current international requirements. MATERIALS AND METHODS Contributions of the different production steps to reduce thrombogenicity were assessed at 0·2 l-scale, and then the methodology was scaled-up to a 10 l-scale and final products (n = 3) were analysed. Purity, immunoglobulin composition, and subclass distribution were determined by electrophoretic and immunochemical methods. The in vitro thrombogenic potential was determined by a thrombin generation assay (TGA) using a Technothrombin fluorogenic substrate. Prekallikrein activator (PKA), plasmin, factor Xa, thrombin and thrombin-like activities were assessed using S-2302, S-2251, S-2222, S-2238 and S-2288 chromogenic substrates, respectively, and FXI by an ELISA. RESULTS The thrombogenicity markers were reduced mostly during the ATPS step and were found to segregate mostly into the discarded liquid upper phase. The caprylic acid precipitation eliminated the residual procoagulant activity. The IgG preparations made from the 10 l-batches contained 100% gamma proteins, low residual IgA and undetectable IgM. The IgG subclass distribution was not substantially affected by the process. TGA and amidolytic activities revealed an undetectable in vitro thrombogenic risk and the absence of proteolytic enzymes in the final product. CONCLUSIONS Fractionating human plasma by an ATPS combined with caprylic acid and membrane chromatography resulted in an IgG preparation of high purity and free of a detectable in vitro thrombogenic risk.
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Affiliation(s)
- M Vargas
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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