1
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Almomen AM, Alzahrani HA, AlSaeed HH, AlAseri Z, Mady AF, Owaidah T. Saudi expert consensus on acquired hemophilia A diagnosis and management. J Taibah Univ Med Sci 2024; 19:566-574. [PMID: 38736896 PMCID: PMC11087233 DOI: 10.1016/j.jtumed.2024.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 03/05/2024] [Accepted: 04/16/2024] [Indexed: 05/14/2024] Open
Abstract
Objectives Acquired hemophilia affects approximately one in 1 million people. Timely diagnosis is key to appropriate disease management and the prevention of life-threatening complications. Patients with this condition may initially be seen by inexperienced physicians and remain underdiagnosed for several years. This consensus statement is aimed at providing guidelines for all practitioners in the Kingdom of Saudi Arabia (KSA) to diagnose and manage acquired hemophilia A. Methods This consensus statement reflects the opinions drafted by a group of hematology specialists, who used an explicit systematic process to identify areas of agreement and disagreement. Results This consensus statement provides a guide for all practitioners in the KSA regarding the diagnosis of clinical presentation, relevance, characteristics of bleeding symptoms, and case management; it additionally provides guidance for non-specialists. All management aspects, including diagnosis and treatment modalities, are discussed. Conclusions Patients with acquired hemophilia may initially be seen by physicians who lack appropriate expertise in diagnosing and managing this condition. This consensus statement from the premier experts on the disease in the KSA provides details for diagnosing and managing acquired hemophilia.
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Affiliation(s)
| | - Hazza A. Alzahrani
- Adult Hematology/HSCT, Oncology Centre, King Faisal Specialist Hospital and Research Center, Riyadh, KSA
| | - Hussein H. AlSaeed
- Department of Hematology, Qatif Central Hospital, Qatif Health Network, East Cluster Ministry of Health, KSA
| | - Zohair AlAseri
- Departments of Emergency Medicine and Critical Care, College of Medicine, King Saud University, Riyadh, KSA
- Department of Clinical Sciences, College of Medicine and Riyadh Hospital, Dar Al Uloom University, Riyadh, KSA
- Therapeutic Deputyship, Ministry of Health, Riyadh, KSA
| | - Ahmed F. Mady
- ICU, King Saud Medical City, Riyadh, KSA
- Department of Anesthesiology and ICU, Tanta University Hospital, Egypt
| | - Tarek Owaidah
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, KSA
- Alfaisal University, Riyadh, KSA
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2
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Conti F, Moratti M, Leonardi L, Catelli A, Bortolamedi E, Filice E, Fetta A, Fabi M, Facchini E, Cantarini ME, Miniaci A, Cordelli DM, Lanari M, Pession A, Zama D. Anti-Inflammatory and Immunomodulatory Effect of High-Dose Immunoglobulins in Children: From Approved Indications to Off-Label Use. Cells 2023; 12:2417. [PMID: 37830631 PMCID: PMC10572613 DOI: 10.3390/cells12192417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/23/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND The large-scale utilization of immunoglobulins in patients with inborn errors of immunity (IEIs) since 1952 prompted the discovery of their key role at high doses as immunomodulatory and anti-inflammatory therapy, in the treatment of IEI-related immune dysregulation disorders, according to labelled and off-label indications. Recent years have been dominated by a progressive imbalance between the gradual but constant increase in the use of immunoglobulins and their availability, exacerbated by the SARS-CoV-2 pandemic. OBJECTIVES To provide pragmatic indications for a need-based application of high-dose immunoglobulins in the pediatric context. SOURCES A literature search was performed using PubMed, from inception until 1st August 2023, including the following keywords: anti-inflammatory; children; high dose gammaglobulin; high dose immunoglobulin; immune dysregulation; immunomodulation; immunomodulatory; inflammation; intravenous gammaglobulin; intravenous immunoglobulin; off-label; pediatric; subcutaneous gammaglobulin; subcutaneous immunoglobulin. All article types were considered. IMPLICATIONS In the light of the current imbalance between gammaglobulins' demand and availability, this review advocates the urgency of a more conscious utilization of this medical product, giving indications about benefits, risks, cost-effectiveness, and administration routes of high-dose immunoglobulins in children with hematologic, neurologic, and inflammatory immune dysregulation disorders, prompting further research towards a responsible employment of gammaglobulins and improving the therapeutical decisional process.
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Affiliation(s)
- Francesca Conti
- Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (F.C.); (A.M.); (A.P.)
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
| | - Mattia Moratti
- Specialty School of Paediatrics, University of Bologna, 40138 Bologna, Italy; (A.C.); (E.B.)
| | - Lucia Leonardi
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, 00185 Rome, Italy;
| | - Arianna Catelli
- Specialty School of Paediatrics, University of Bologna, 40138 Bologna, Italy; (A.C.); (E.B.)
| | - Elisa Bortolamedi
- Specialty School of Paediatrics, University of Bologna, 40138 Bologna, Italy; (A.C.); (E.B.)
| | - Emanuele Filice
- Department of Pediatrics, Maggiore Hospital, 40133 Bologna, Italy;
| | - Anna Fetta
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neuropsichiatria dell’Età Pediatrica, 40139 Bologna, Italy
| | - Marianna Fabi
- Paediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy;
| | - Elena Facchini
- Pediatric Oncology and Hematology Unit “Lalla Seràgnoli”, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (E.F.); (M.E.C.)
| | - Maria Elena Cantarini
- Pediatric Oncology and Hematology Unit “Lalla Seràgnoli”, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (E.F.); (M.E.C.)
| | - Angela Miniaci
- Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (F.C.); (A.M.); (A.P.)
| | - Duccio Maria Cordelli
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neuropsichiatria dell’Età Pediatrica, 40139 Bologna, Italy
| | - Marcello Lanari
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
- Paediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy;
| | - Andrea Pession
- Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy; (F.C.); (A.M.); (A.P.)
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
| | - Daniele Zama
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy; (A.F.); (D.M.C.); (M.L.); (D.Z.)
- Paediatric Emergency Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy;
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3
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Marwanta S, Muhammad F, Maryono S, Salimah K, Sudarmadi SD, Purwanto B, Wasita B, Ardyanto TD, Soetrisno. Association between interleukin-2 (rs2069762) gene polymorphism and FVIII inhibitor development in Indonesian patients with severe hemophilia A. MEDICAL JOURNAL OF INDONESIA 2023. [DOI: 10.13181/mji.oa.236439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Factor VIII (FVIII) inhibitors in hemophilia A (HA) patients render FVIII replacement therapy ineffective. Although its development cause is unclear, it has been classified into therapeutic and genetic-related etiologies. Single nucleotide polymorphisms (SNPs) in several cytokine genes, including interleukin (IL)-2, could increase the risk of FVIII inhibitor development. This study aimed to evaluate the association between IL-2 (rs2069762) gene SNP and FVIII inhibitor development in Indonesian patients with severe HA.
METHODS The IL-2 (rs2069762) gene SNP was examined in 119 HA patients. The presence of FVIII inhibitors was quantified using an enzyme-linked immunosorbent assay, with a titer of <0.28 ng/ml considered negative. Patients were divided into two groups: 59 with FVIII inhibitors (positive group) and 60 without inhibitors (negative group). The genotype of the subjects was determined using peripheral blood mononuclear cells and tetra-primer amplification refractory mutation system-polymerase chain reaction.
RESULTS There was no association between IL-2 (rs2069762) gene polymorphism and FVIII inhibitor development on genotypes (p = 0.138) and allele frequencies (p = 0.780).
CONCLUSIONS IL-2 (rs2069762) gene polymorphism is not a risk factor in the development of FVIII inhibitors in Indonesian patients with severe HA. Thus, further polymorphism studies in other cytokine genes are required to gain a comprehensive understanding of the FVIII inhibitor development.
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4
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Chebbi D, Marzouk S, Krichen I, El Ahmer I, Snoussi M, Dammak C, Frikha F, Salah RB, Kallel C, Bahloul Z. Acquired hemophilia A in a patient with adult-onset Still's disease: Successful treatment with steroids. Clin Case Rep 2023; 11:e7105. [PMID: 36937636 PMCID: PMC10014520 DOI: 10.1002/ccr3.7105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/11/2023] [Accepted: 03/01/2023] [Indexed: 03/17/2023] Open
Abstract
Acquired hemophilia A (AHA) is a potentially life-threatening hemorrhagic disorder with many etiologies. We report the first case in the literature describing the association of AHA with adult-onset Still's disease (AOSD).
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Affiliation(s)
- Donia Chebbi
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Sameh Marzouk
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Imen Krichen
- Department of HematologyHabib Bourguiba University HospitalSfaxTunisia
| | - Ikram El Ahmer
- Department of HematologyHabib Bourguiba University HospitalSfaxTunisia
| | - Mouna Snoussi
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Chifa Dammak
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Faten Frikha
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Raida Ben Salah
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
| | - Choumous Kallel
- Department of HematologyHabib Bourguiba University HospitalSfaxTunisia
| | - Zouhir Bahloul
- Department of Internal MedicineHedi Chaker University HospitalSfaxTunisia
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5
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Liu S, Wang N, Mei Z, Gao X, Shi Z. Repeated bleeding caused by acquired hemophilia A after endoscopic submucosal dissection: A case report and literature review. Exp Ther Med 2023; 25:129. [PMID: 36845961 PMCID: PMC9947572 DOI: 10.3892/etm.2023.11828] [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: 09/09/2022] [Accepted: 01/06/2023] [Indexed: 02/11/2023] Open
Abstract
Endoscopic submucosal dissection (ESD) has been widely used in the treatment of gastrointestinal tract lesions, and hemorrhage is one of the most common complications. The aim of the present study was to investigate the clinical characteristics of hemorrhage after ESD in patients with acquired hemophilia A (AHA). Firstly, a case of AHA with multiple bleeding events after ESD is reported. Colonoscopy was used to perform ESD treatment of the submucosal tumor, and immunohistochemical analysis was used to analyze the tumor properties. Secondly, literature relevant to postoperative hemorrhage caused by AHA was researched and analyzed, with the changes in activated partial thromboplastin time (APTT) before and after operation, coagulation factor VIII (FVIII) activity, FVIII inhibitor value and treatment plan noted. The majority of patients with AHA had no history of coagulation disorder or genetic disease and showed a normal APTT. However, it was found that the APTT value gradually increased after bleeding. In addition, the APTT correction test did not correct for prolonged APTT and FVIII antibody positivity in AHA. There was no bleeding or bleeding tendency prior to surgery in patients with AHA. The study concludes that when repeated bleeding and a poor hemostatic effect occurs, it is necessary to be alerted to the possibility of AHA, as an early diagnosis is essential for effective hemostasis.
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Affiliation(s)
- Song Liu
- Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, Hubei 430000, P.R. China
| | - Nian Wang
- Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, Hubei 430000, P.R. China
| | - Zhimou Mei
- Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, Hubei 430000, P.R. China
| | - Xiaoyang Gao
- Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, Hubei 430000, P.R. China
| | - Zhaohong Shi
- Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, Hubei 430000, P.R. China,Correspondence to: Professor Zhaohong Shi, Department of Gastroenterology, Wuhan No. 1 Hospital, 215 Zhongshan Road, Wuhan, Hubei 430000, P.R. China
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6
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Sucker C, Schmitt U, Litmathe J. [Acquired inhibitory body hemophilia : A life-threatening reason for the tendency of hematoma-genesis.]. Wien Med Wochenschr 2023; 173:54-56. [PMID: 34338901 DOI: 10.1007/s10354-021-00866-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/21/2021] [Indexed: 01/28/2023]
Abstract
Here, we report a rare case of acquired hemophilia which was diagnosed months after development of spontaneous hematoma. Clinical symptoms, diagnosis, and treatment are briefly summarized. Acquired hemophilia is a rare potentially life-threatening acquired bleeding disorders which should be considered in patients with acquired spontaneous hematoma.
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Affiliation(s)
- Christoph Sucker
- COAGUMED Gerinnungszentrum Berlin, Tauentzienstraße 7 b/c, 10789, Berlin, Deutschland. .,Medizinische Hochschule Brandenburg Theodor Fontane, Brandenburg an der Havel, Deutschland.
| | - Ursula Schmitt
- COAGUMED Gerinnungszentrum Berlin, Tauentzienstraße 7 b/c, 10789, Berlin, Deutschland
| | - Jens Litmathe
- Klinik für Akut- und Notfallmediziner, Evangelisches Krankenhaus Wesel, Wesel, Deutschland
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7
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Acquired Hemophilia A: An Update on the Etiopathogenesis, Diagnosis, and Treatment. Diagnostics (Basel) 2023; 13:diagnostics13030420. [PMID: 36766524 PMCID: PMC9914651 DOI: 10.3390/diagnostics13030420] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/10/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023] Open
Abstract
Acquired haemophilia A (AHA) is a rare bleeding disorder caused by inhibitory autoantibodies against coagulation factor VIII (FVIII). AHA is a disease that most commonly affects the elderly but has also been observed in children and in the postpartum period. AHA is idiopathic in 50% of cases and is associated with autoimmune diseases, malignancies, and infections in the remaining 50%. Recently, cases of association between AHA, COVID-19 vaccination, and infection have been reported in the literature. For diagnoses, determining FVIII levels is crucial to distinguish the different causes of aPTT prolongation. Treatment of AHA is based on bypassing agents (recombinant factor VIIa, activated prothrombin complex concentrate) and porcine FVIII to control the bleeding and immunosuppressive therapy (corticosteroids, rituximab, cyclophosphamide) to suppress autoantibody production. It is important to start a prophylactic regimen to prevent further bleeding episodes until the inhibitor is negative. Recently, the series of cases reported in the literature suggest that emicizumab may provide effective and safe haemorrhage prophylaxis in the outpatient setting.
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8
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Mingot-Castellano ME, Rodríguez-Martorell FJ, Nuñez-Vázquez RJ, Marco P. Acquired Haemophilia A: A Review of What We Know. J Blood Med 2022; 13:691-710. [PMID: 36447782 PMCID: PMC9701517 DOI: 10.2147/jbm.s342077] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 11/10/2022] [Indexed: 08/31/2023] Open
Abstract
Autoantibodies against plasma coagulation factors could be developed by some individuals inducing severe and sometimes fatal bleedings. This clinical entity is called acquired haemophilia. It should be suspected in subjects with acute abnormal bleedings, without personal or familiar history of congenital bleeding disorders with an unexplained prolonged aPTT. It is rare disease, although its incidence may be underestimated due to the low knowledge about it by many specialists, the frequent use of anticoagulant or antiplatelet therapies in the affected population that can mask the diagnosis and, sometimes, a so withering effect that avoid its confirmation. Mortality ranges between 9% and 33% depending on the series in the first 2 months after diagnosis. This mortality is attributed in up to 40% of the cases to infections in the context of immunosuppressive treatments used to eliminate the inhibitor. Factor VIII levels below 1% and high inhibitor titers are conditions of worse response rates. Advanced age, patient's ECOG, and underlying conditions are key prognostic factors for response to treatment and patient survival. To reduce morbidity and mortality in these patients, it is important to have clinical knowledge and access to guidelines to achieve an early diagnosis and to optimize the haemostatic and immunosuppressive treatment. This review aims to contribute to the dissemination of basic concepts on the epidemiology etiopathogenesis, diagnosis, treatment and management of these patients, as well as risk factors to get remission and the longest overall survival to allow individualized care. Especial awareness will be proposed in patients with some underlying conditions like cancer, autoimmune diseases, children, pregnancy or drugs.
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Affiliation(s)
- María Eva Mingot-Castellano
- Hematology Department, Hospital Universitario Virgen del Rocío. Instituto de Biomedicina de Sevilla (IBIS), Sevilla, Spain
| | | | - Ramiro José Nuñez-Vázquez
- Hematology Department, Hospital Universitario Virgen del Rocío. Instituto de Biomedicina de Sevilla (IBIS), Sevilla, Spain
| | - Pascual Marco
- General Medicine Department, Universidad Miguel Hernández, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
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9
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Corpus luteum hemorrhage with acquired hemophilia A: a case report and literature review. BMC Womens Health 2022; 22:418. [PMID: 36221134 PMCID: PMC9552471 DOI: 10.1186/s12905-022-02000-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/05/2022] [Indexed: 11/05/2022] Open
Abstract
Background The rupture of the corpus luteum (CL) may occur at all stages of a woman’s reproductive life. Bleeding of the ruptured CL varies from self-limiting hemorrhage to massive hemoperitoneum, causing the shock and subsequent emergency surgery. But hemoperitoneum secondary to ruptured CL is a rare complication and situation for women with bleeding disorders. Case presentation We here describe a case of severe CL hemorrhage with factor VIII deficiency. We chose conservative management instead of surgery for the abnormal hemostatic condition. With blood product and factor concentrate support, conservative management was successful in avoiding surgery in the episode of bleeding. Conclusion Gynecologist should be alert for the patients with abnormal hemostatic condition. Selective patients presenting with CL hemoperitoneum association with bleeding disorders may undergo conservative management and avoid the risk of surgery.
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10
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Arruda VR, Lillicrap D, Herzog RW. Immune complications and their management in inherited and acquired bleeding disorders. Blood 2022; 140:1075-1085. [PMID: 35793465 PMCID: PMC9461471 DOI: 10.1182/blood.2022016530] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/23/2022] [Indexed: 02/06/2023] Open
Abstract
Disorders of coagulation, resulting in serious risks for bleeding, may be caused by autoantibody formation or by mutations in genes encoding coagulation factors. In the latter case, antidrug antibodies (ADAs) may form against the clotting factor protein drugs used in replacement therapy, as is well documented in the treatment of the X-linked disease hemophilia. Such neutralizing antibodies against factors VIII or IX substantially complicate treatment. Autoantibody formation against factor VIII leads to acquired hemophilia. Although rare, antibody formation may occur in the treatment of other clotting factor deficiencies (eg, against von Willebrand factor [VWF]). The main strategies that have emerged to address these immune responses include (1) clinical immune tolerance induction (ITI) protocols; (2) immune suppression therapies (ISTs); and (3) the development of drugs that can improve hemostasis while bypassing the antibodies against coagulation factors altogether (some of these nonfactor therapies/NFTs are antibody-based, but they are distinct from traditional immunotherapy as they do not target the immune system). Choice of immune or alternative therapy and criteria for selection of a specific regimen for inherited and autoimmune bleeding disorders are explained. ITI serves as an important proof of principle that antigen-specific immune tolerance can be achieved in humans through repeated antigen administration, even in the absence of immune suppression. Finally, novel immunotherapy approaches that are still in the preclinical phase, such as cellular (for instance, regulatory T cell [Treg]) immunotherapies, gene therapy, and oral antigen administration, are discussed.
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Affiliation(s)
- Valder R Arruda
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics at The Children's Hospital of Philadelphia, Philadelphia, PA
- Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA
| | - David Lillicrap
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada; and
| | - Roland W Herzog
- Herman B Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
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11
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Noguchi H, Seki H, Tokumine J, Nakazawa H, Yorozu T. Bleeding After Central Venous Catheter Placement in a Patient With Undiagnosed Acquired Hemophilia A: A Case Report. Cureus 2022; 14:e27444. [PMID: 36060351 PMCID: PMC9420460 DOI: 10.7759/cureus.27444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2022] [Indexed: 11/23/2022] Open
Abstract
Acquired hemophilia A is a rare condition caused by autoantibodies against endogenous coagulation factor VIII, which results in spontaneous bleeding. Workup of a patient with difficult hemostasis after removing and placing a central venous catheter led to the diagnosis of acquired hemophilia A. A 64-year-old man was transferred with an intramuscular right thigh mass. Initial biopsy at an outside facility showed degenerated muscle and coagula and he was transferred for incisional biopsy and definitive treatment. The patient had difficult venous access, and a right internal jugular venous catheter was placed. The catheter insertion site showed slow continuous bleeding. Achieving adequate hemostasis after removing the catheter was difficult, and a hematoma formed after the placement of an infraclavicular axillary venous catheter under ultrasound guidance. Coagulation studies revealed a prolonged activated partial thromboplastin time at 96 seconds. The patient was then diagnosed with acquired hemophilia A by enzyme-linked immunosorbent assay using anti-factor VIII antibodies. Even if ultrasound-guided central venous catheterization is performed carefully, bleeding may occur in some patients, suggesting the possibility of coagulopathy. Decision-making for performing central venous catheterization requires extensive knowledge of coagulopathies to understand the causes of bleeding complications.
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12
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Rashid NG, Amin SS, Abdulqader AMR. Diagnosis and Management of Post-Partum Hemorrhage Caused by Acquired Hemophilia A: A Case Report. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2022. [DOI: 10.15324/kjcls.2022.54.2.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
| | - Shaema Salih Amin
- Hiwa Hemato-Oncology Center, Kurdistan Region of Iraq KRI, Sulaymaniyah, Iraq
| | - Aveen M. Raouf Abdulqader
- Department of Medical Laboratory Sciences (MLS), American University of Iraq-Sulymaniyah (AUIS), Sulymaniyah, Iraq
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13
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Zattera C, Luly S, Cipriano A, Rizzelli GML, Cecconi N, Santini M. An unexpected turn of events: A rare case of Acquired Haemophilia A after a violin spider bite. EMERGENCY CARE JOURNAL 2022. [DOI: 10.4081/ecj.2022.10457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report an interesting clinical case of Acquired Haemophilia A (AHA) after a probable Loxosceles rufescens spider bite in a 73- year-old woman, admitted to an Emergency Department (ED) of Central Italy during April 2019. AHA is a rare disease, whose acute clinical manifestations are not widely known by most ED physicians; its prompt recognition and treatment are crucial to avoid fatal bleeding. In particular, the development of AHA after a violin spider bite (another rare and poorly characterized clinical condition) has never been described. Therefore, our case report could provide useful insight into the understanding and treatment of such unusual and possibly life-threatening conditions.
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14
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Pishko AM, Doshi BS. Acquired Hemophilia A: Current Guidance and Experience from Clinical Practice. J Blood Med 2022; 13:255-265. [PMID: 35592586 PMCID: PMC9112043 DOI: 10.2147/jbm.s284804] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/22/2022] [Indexed: 12/23/2022] Open
Abstract
In acquired hemophilia A (AHA), autoantibodies to coagulation factor VIII (FVIII) neutralize FVIII activity leading to a potentially severe bleeding diathesis that carries a high rate of morbidity and mortality. This disorder is rare and occurs mainly in adults over 60 years of age or in the postpartum period. The diagnosis should be suspected in patients with new-onset bleeding without a personal or family history of bleeding and can be confirmed via specific assays for FVIII inhibitors. Treatment involves both hemostatic therapies to decrease bleeding and immune modulation strategies to re-establish immune tolerance to FVIII. There are limited data on treatment for refractory disease, based mostly on small case series. Registry studies have informed consensus guidelines for optimal hemostatic therapies and initial immunosuppressive therapies. Additional studies are needed to evaluate novel hemostatic agents and develop biomarkers to risk-stratify treatment while limiting adverse events.
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Affiliation(s)
- Allyson M Pishko
- Department of Medicine, Division of Hematology/Oncology, University of Pennsylvania, Philadelphia, PA, USA
| | - Bhavya S Doshi
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
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Lee MJ, Park YS. A Rare Case of Acquired Hemophilia A in Adolescents and Young Adults. CLINICAL PEDIATRIC HEMATOLOGY-ONCOLOGY 2022. [DOI: 10.15264/cpho.2022.29.1.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Min Jeong Lee
- Department of Pediatrics, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Young Shil Park
- Department of Pediatrics, Kyung Hee University Hospital at Gangdong, Seoul, Korea
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Al Hennawi H, Al Masri MK, Bakir M, Albarazi M, Jazaeri F, Almasri TN, Shoura SJ, Barakeh ARR, Taftafa A, Khan MK, Zaleski HI. Acquired Hemophilia A Post-COVID-19 Vaccination: A Case Report and Review. Cureus 2022; 14:e21909. [PMID: 35265430 PMCID: PMC8898568 DOI: 10.7759/cureus.21909] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/04/2022] [Indexed: 11/13/2022] Open
Abstract
Acquired hemophilia A (AHA) is an inhibitory coagulopathy that represents a rare variant of hemorrhagic syndromes. We present a case of idiopathic AHA in a 75-year-old male patient with a cutaneous hematoma that could be attributed to a recent COVID-19 vaccination. The aim of this report is to raise awareness of a possible association between AHA and COVID-19 vaccination and to review similar reported cases and management plans to prevent the development of possible morbidity and debilitating complications. This case illustrates an exceptionally rare side effect of the COVID-19 vaccination. The advantages of obtaining the COVID-19 vaccine outweigh the risks.
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Affiliation(s)
- Hussam Al Hennawi
- College of Medicine, Alfaisal University College of Medicine, Riyadh, SAU
| | | | - Mohamad Bakir
- College of Medicine, Alfaisal University College of Medicine, Riyadh, SAU
| | - Mohieddin Albarazi
- College of Medicine, Alfaisal University College of Medicine, Riyadh, SAU
| | - Feras Jazaeri
- College of Medicine, Alfaisal University College of Medicine, Riyadh, SAU
| | - Talal N Almasri
- College of Medicine, Alfaisal University College of Medicine, Riyadh, SAU
| | - Sami J Shoura
- Internal Medicine, John H. Stroger, Jr. Hospital of Cook County, Chicago, USA
| | | | | | - Muhammad K Khan
- College of Medicine, Dow University of Health Sciences, Civil Hospital Karachi, Karachi, PAK
| | - Henry I Zaleski
- Hematology and Oncology, Houston Methodist Hospital, Houston, USA
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17
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Bragança M, Valente C, Ferreira AI, Freitas-Silva M. Acquired Hemophilia A associated with bullous pemphigoid: A rare combination. Transfus Apher Sci 2021; 61:103337. [PMID: 34903450 DOI: 10.1016/j.transci.2021.103337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/22/2021] [Accepted: 11/27/2021] [Indexed: 11/26/2022]
Abstract
Acquired Hemophilia A (AHA) is a rare autoimmune disorder, caused by the development of circulating autoantibodies against coagulation factor VIII (FVIII). AHA is associated with bullous pemphigoid in 2% of patients. We report a case of a 74-year-old man admitted with anemia and a tense subcutaneous and muscular hematoma in the right thigh. Blood analysis confirmed AHA. The patient had a recent diagnosis of bullous pemphigoid. Response to bypass agents and corticosteroids was good with bleeding control and normalization of FVIII and negative autoantibodies, respectively. In a 3-month follow-up period after tapering and stopping prednisolone, a relapse occurred, and immunosuppression was reinitiated. An early diagnosis and effective treatment in AHA are essential to reduce morbimortality. A careful tapering of immunosuppression is important to minimize FVIII inhibitor recurrence, as observed in this case.
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Affiliation(s)
- Mariana Bragança
- Department of Internal Medicine, Centro Hospitalar Universitário de São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.
| | - Carolina Valente
- Department of Internal Medicine, Centro Hospitalar Universitário de São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Ana Isabel Ferreira
- Department of Internal Medicine, Centro Hospitalar Universitário de São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Margarida Freitas-Silva
- Department of Internal Medicine, Centro Hospitalar Universitário de São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
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18
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Unexplained hemorrhagic syndrome? Consider acquired hemophilia A or B. Blood Rev 2021; 53:100907. [PMID: 34776294 DOI: 10.1016/j.blre.2021.100907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 11/02/2022]
Abstract
There is a dire need to develop an algorithm to improve the recognition of acquired hemophilia A and B (AHA and AHB) in clinical practice. Initial and intensive care unit (ICU) management of the disorder is particular and represents a challenge for the internist/hematologist and the ICU physician. A delay in the proper treatment of bleeding episodes can lead to a life-threatening event. Expert advice should be sought as soon as possible. Succesful resolution involves accurate diagnosis, bleeding control with hemostatic and immunotherapy, and eradication of the autoantibodies to improve overall survival. Current treatment guidelines are based on the literature in the form of cases and observational studies due to a lack of randomized controlled trials. AH can be triggered by many pathologies, presenting as a paraneoplastic syndrome in case of malignancies or as surgical associated acquired hemophilia (SAHA). We have reviewed the literature from 2015 to 2021 regarding the new case reports to further assess if there is an improvement in the clinical approach.
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19
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Management of acquired hemophilia A: results from the Spanish registry. Blood Adv 2021; 5:3821-3829. [PMID: 34521101 DOI: 10.1182/bloodadvances.2021004626] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023] Open
Abstract
The Spanish Acquired Hemophilia A (AHA) Registry is intended to update the status of AHA in Spain. One hundred and fifty-four patients were included and retrospectively followed for a median of 12 months. Patients were predominantly male (56.3%), with median age at diagnosis of 74 years. AHA was more frequently idiopathic (44.1%) and autoimmune disorder-associated (31.7%). Thirty-four percent of patients were on antithrombotic therapy at diagnosis. Hemostatic treatment was used in 70% of patients. Recombinant activated factor VII was more frequently infused (60.3% vs 20.6% activated prothrombin complex concentrate). Only 1 patient did not achieve control of hemorrhage. Complete remission (CR) was achieved by 84.2% of cases after immunosuppressive therapy. Steroids alone were less efficient than the other strategies (68.2% vs 87.2%, P = .049), whereas no differences existed among these (steroids/cyclophosphamide, 88.5%, vs steroids/calcineurin inhibitors, 81.2%, vs rituximab-based regimens, 87.5%). Female sex and high inhibitor levels influenced CR negatively. Thirty-six deaths (23.8%) were reported. Main causes of death were infection (15 patients, 9.9%) and hemorrhage (5 patients, 3.3%). All hemorrhage-related and half the infection-related deaths occurred within 2 months of diagnosis. Prior antithrombotic therapy was inversely associated with survival, irrespective of age. Median age of nonsurvivors was significantly higher (79 vs 73 years in survivors). Patients dying of infection were older than the other nonsurvivors (85 vs 78 years). In summary, fatal infection in the first months is common in our series. Antithrombotic therapy is associated with mortality. Particular care should be taken to avoid misdiagnosis.
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20
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Diagnosis and Management of Acquired Hemophilia A: Case Reports and a Literature Review. Case Rep Med 2021; 2021:5554664. [PMID: 34567128 PMCID: PMC8457949 DOI: 10.1155/2021/5554664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/20/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022] Open
Abstract
Background Acquired hemophilia A (AHA) is a potentially life-threatening autoimmune hemostatic disorder where autoantibodies that disrupt the functions of factor VIII (FVIII) are present in the circulation. The early diagnosis of AHA is difficult since the symptoms of AHA differ from those of congenital hemophilia A. Furthermore, the management of AHA is also more complex due to the presence of autoantibodies against FVIII (FVIII inhibitors). Here, we present three case reports and conduct a literature review of AHA with the aim to increase awareness and knowledge regarding the diagnosis and treatment of AHA. Case Presentations. We present three patients diagnosed with AHA in these case reports. The first patient was a young female, while the second and third patients were middle-aged and elderly males, respectively. All patients presented with a chief complaint of bruises without hemarthrosis and a history of bleeding. Laboratory examinations of the patients revealed isolated prolonged aPTT, normal PT, and the presence of autoantibodies against factor VIII, which are characteristics of AHA. Patients were then treated with corticosteroids to reduce the titer level of autoantibodies and received factor VIII transfusion to stop bleeding. Conclusion AHA can be suspected in patients presenting with symptoms of bruises without hemarthrosis and without the history of bleeding. Isolated aPTT elevation with normal PT should raise high suspicion of AHA. The presence of FVIII inhibitors can help to confirm the diagnosis of AHA. Treatment consists of factor VIII transfusion and corticosteroid therapy. Bypassing agents are recommended as an alternative to FVIII transfusion.
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21
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Cao XY, Li MT, Zhang X, Zhao Y, Zeng XF, Zhang FC, Hou Y, Zhu LX. Characteristics of Acquired Inhibitors to Factor VIII and Von Willebrand Factor Secondary to Systemic Lupus Erythematosus: Experiences From a Chinese Tertiary Medical Center. J Clin Rheumatol 2021; 27:201-205. [PMID: 31815811 PMCID: PMC8300847 DOI: 10.1097/rhu.0000000000001284] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVE Because acquired hemophilia (AH) is a rare entity in systemic lupus erythematosus (SLE), we aimed to investigate the clinical features of SLE-related AH in Chinese patients. METHODS This is a medical records review study carried out at a large tertiary care hospital in China from years 1986 to 2018. We searched the case database in Peking Union Medical College Hospital using the International Classification of Diseases. The clinical data on SLE-related AH patients were collected. RESULTS A total of 9282 SLE patients had been hospitalized. Six female SLE-related AH patients were identified. Four patients had acquired hemophilia A (AHA), and 2 patients had acquired von Willebrand syndrome. Their mean age was 33.67 ± 13.77 years. Five patients had active disease. The mean SLE disease activity index measured at the time of diagnosis of AH was 10.50 ± 5.28. The average level of activated partial thromboplastin time was 86.5 seconds. Coexistence of secondary antiphospholipid syndrome and AHA was found in one case, and pulmonary embolism was observed 3 years later. After immunosuppressive therapy and symptomatic treatment, an overall remission rate of 83.3% was achieved. CONCLUSIONS The frequency of SLE-related AH was low. The development of AH in SLE patients frequently occurs with active disease. The AH could be the first clinical presentation of SLE. Secondary antiphospholipid syndrome and AHA could appear in the same SLE patient. Early and aggressive treatment contributes to a favorable prognosis.
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Affiliation(s)
- Xiao-Yu Cao
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Meng-Tao Li
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Xuan Zhang
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Yan Zhao
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Xiao-Feng Zeng
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Feng-Chun Zhang
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
| | - Yong Hou
- From the Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Graduate School of Peking Union Medical College, Beijing
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22
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[Unclear massive hemorrhage with obstruction of the airways]. HNO 2021; 69:1009-1011. [PMID: 33723671 DOI: 10.1007/s00106-021-01025-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2021] [Indexed: 10/21/2022]
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Poscente M, Gan CL, Heng DYC, Alimohamed N. Case - Acquired hemophilia A in a patient with metastatic castration-resistant prostate cancer. Can Urol Assoc J 2021; 15:E519-E521. [PMID: 33591907 DOI: 10.5489/cuaj.7089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Michael Poscente
- Tom Baker Cancer Centre, University of Calgary, Calgary, AB, Canada
| | - Chun Loo Gan
- Tom Baker Cancer Centre, University of Calgary, Calgary, AB, Canada
| | - Daniel Y C Heng
- Tom Baker Cancer Centre, University of Calgary, Calgary, AB, Canada
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Acquired hemophilia A that required surgical hemostasis of hematomas occupying oral cavity: a case report. J Med Case Rep 2021; 15:66. [PMID: 33583426 PMCID: PMC7883448 DOI: 10.1186/s13256-021-02669-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 01/07/2021] [Indexed: 02/01/2023] Open
Abstract
Background Acquired hemophilia A is a rare coagulopathy caused by inhibitors of blood coagulation factor VIII. Patients with acquired hemophilia A have a higher mortality risk (5–10%) than those with congenital hemophilia. Moreover, there is no established evidence of management recommended for patients with acquired hemophilia A. Previous studies have reported the presence of hematomas in the oral cavities of patients with acquired hemophilia A, which were treated conservatively. Here, we describe the case of a patient with acquired hemophilia A, where emergency surgical hemostasis was required for large intraoral hematomas. Case presentation A 65-year-old Japanese man was referred to our hospital with a chief complaint of bleeding from large intraoral hematomas. On examination, he could not close his mouth because of the hematomas, which were bleeding spontaneously. Computed tomography angiography revealed no evidence of arteriovenous malformation, and blood test results showed that the activated partial thromboplastin time was elevated beyond the normal limit. To avoid a life-threatening hemorrhage from hematomas, emergency surgical hemostasis was performed with nasotracheal intubation using fiberoptic bronchoscopy. Hemostasis was successfully performed, as the hematomas were carefully removed. Moreover, the clinical course was successfully completed using intravenously administered activated prothrombin complex concentrate for hemostasis after operation. Conclusions Acquired hemophilia A can cause a life-threatening hemorrhage without predictive factors. Intraoral hematoma may cause airway obstruction. There is no consensus regarding the management of hemorrhage in patients with acquired hemophilia A. As shown here, exophytic hematomas in the oral cavity can be safely removed and nasotracheal intubation with fiberoptic bronchoscopy may be useful in patients with coagulopathy disease.
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25
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Khan UZ, Yang X, Masroor M, Aziz A, Yi H, Liu H. Surgery-associated acquired hemophilia A: a report of 2 cases and review of literature. BMC Surg 2020; 20:213. [PMID: 32967658 PMCID: PMC7510307 DOI: 10.1186/s12893-020-00872-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 09/16/2020] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Acquired Hemophilia A (AHA) is a rare bleeding diathesis in patients with no previous personal or family bleeding history. The diagnosis of this disease often delays due to unfamiliarity of physicians with it, which leads to its high mortality rate. CASE PRESENTATION Two cases (one 12 years old female and another 18 years old male) were admitted for right upper abdominal mass and right upper abdominal pain respectively at different times. Pre-operative diagnosis of both cases was congenital choledochal cyst. They suffered continuous gastrointestinal bleeding (hematemesis and melena) with reduced hemoglobin to 54 g/L and 60 g/L after Roux-en-Y anastomosis respectively. To investigate the exact bleeding site, Digital subtraction angiography (DSA) of case 1 showed contrast overflow at small branch of proper hepatic artery but had unremarkable result for case 2, whereas gastroscopy of both cases showed unremarkable results. Multiple surgeries were also performed for hemostatic purpose but each time no active bleeding site was found. Finally, hematologists consultation was mandated in both cases and they were diagnosed as acquired haemophilia A. However, unfortunately case 1 patient could not survive because of sever hemorrhage and infection while Case 2 of 18 years old male survived after proper haemophilia treatment catalog. CONCLUSION Awareness about surgery associated acquired haemophilia A (SAHA) can facilitate quick diagnosis and lifesaving management because the mortality rate in SAHA is high due to lake of knowledge or late recognition of the disease. Bleeding always occurs at surgical sites and it can occur immediately within few hours after surgery in some cases. Hemorrhage may be severe or even life threatening and it presents a special challenge for diagnosis and treatment in a patient who has just undergone a surgical procedure. The treatment strategies for AHA include resumption of hemostasis with either recombinant porcine factor VIII (rpFVIII) or bypassing agents and immunosuppressive therapy to suppress the production of the factor VIII inhibitor.
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Affiliation(s)
- Umar Zeb Khan
- Department of General Surgery, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, 410013, China
| | - Xiangwu Yang
- Department of General Surgery, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, 410013, China
| | - Matiullah Masroor
- Department of General Surgery, The Second Xiangya Hospital of Central South University, 139 Renmin Middle Rd, Changsha, 410011, China
| | - Abdul Aziz
- Molecular Biology Research Center & Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, China
| | - Hui Yi
- Molecular Biology Research Center & Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, 410078, China
| | - Hai Liu
- Department of General Surgery, The Third Xiangya Hospital of Central South University, 138 Tongzipo Rd, Changsha, 410013, China.
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Roy AM, Siddiqui A, Venkata A. Undiagnosed Acquired Hemophilia A: Presenting as Recurrent Gastrointestinal Bleeding. Cureus 2020; 12:e10188. [PMID: 33029467 PMCID: PMC7529483 DOI: 10.7759/cureus.10188] [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] [Indexed: 12/02/2022] Open
Abstract
Acute gastrointestinal bleeding (GIB) is a frequently encountered medical emergency and it can be life-threatening depending on the etiology and the clinical condition of the patient. The most common causes of GIB are peptic ulcer disease, aspirin-induced gastritis, variceal hemorrhage, esophagitis, neoplasms like gastric cancer. Acquired hemophilia causing acute gastrointestinal bleed is extremely rare and only a few cases are reported worldwide. Acquired hemophilia A (AHA) is a rare disorder caused by the production of autoantibodies that inactivates clotting factor VIII. We present a case of upper gastrointestinal bleed due to AHA which was undiagnosed for two years. A 74-year-old patient with a history of myasthenia gravis, presented with anemia, and GIB. She underwent multiple endoscopies without a clear bleeding source. Coagulation studies showed isolated activated partial thromboplastin time prolongation which was not corrected by mixing study. Factor VIII activity was low and Bethesda titer showed elevated inhibitor levels. Factor Eight Bypassing Agent, recombinant factor VIIa, and steroids were given to control bleeding. Her clinical condition worsened, and she passed away. Elderly patients presenting with an undiagnosed source of GIBs, inconclusive endoscopic studies should be evaluated for acquired coagulopathies, especially in those with a history of autoimmune diseases and malignancies. Prompt diagnosis and treatment are warranted as it carries a high mortality. Part of the case presentation was presented as an abstract at a regional conference
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Affiliation(s)
- Arya Mariam Roy
- Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Aisha Siddiqui
- Internal Medicine, American University of Antigua, New York, USA
| | - Anand Venkata
- Pulmonary and Critical Care Medicine, University of Arkansas for Medical Sciences, Little Rock, USA
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Acquired Haemophilia A: An Intriguing Disease. Mediterr J Hematol Infect Dis 2020; 12:e2020045. [PMID: 32670523 PMCID: PMC7340240 DOI: 10.4084/mjhid.2020.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 06/18/2020] [Indexed: 12/31/2022] Open
Abstract
Abstract. Acquired Haemophilia A is a rare acquired bleeding disorder caused by Factor VIII autoantibodies, which neutralise FVIII activity. These inhibitors differ from alloantibodies against FVIII, which can occur in congenital Haemophilia A after repeated exposures to plasma-derived or recombinant FVIII products. In most cases, the disease occurs suddenly in subjects without a personal or familiar history of bleedings, with symptoms that may be mild, moderate, or severe. However, only laboratory alterations are present in ~ 30% of patients. The incidence varies from 1 to 4 cases per million/year; more than 80% of patients are elderly, males and females are similarly affected. There is a small peak of incidence related to pregnancy in young women aged 20–40 years. The disease may be underdiagnosed in the elderly. The diagnostic algorithm is based on an isolated prolonged activated partial thromboplastin time, normal thrombin time, absence of Lupus Anticoagulant, and a mixing test that reveals the presence of an inhibitor: the finding of reduced FVIII activity and the detection of neutralising autoantibodies against FVIII lead to the diagnosis. The disease is idiopathic in 44%–63% of cases, while in the others etiological factors are present. Bleeding prevention and treatment are based on therapeutic tools as by-passing agents, recombinant porcine FVIII concentrate or, in a limited number of cases, FVIII concentrates and desmopressin. As soon as the diagnosis has been made, immunosuppressive therapy must be started to eradicate the inhibitor. Better knowledge of the disease, optimal management of bleeding and eradication of the inhibitor have significantly reduced morbidity and mortality in most patients.
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28
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Abstract
Acquired hemophilia A (AHA) is a rare autoimmune hematological disorder that has an incidence of about 1.5 cases per million people per year. It occurs in the elderly with the median age of 75 years, and most of the cases are idiopathic. It occurs due to the development of factor VIII inhibitor, which is an autoantibody against factor VIII leading to potentially life-threatening bleeding episodes. The diagnosis of AHA is often delayed and challenging. We report a case of an 86-year-old male who initially presented with signs and symptoms of a stroke. He was found to have oral mucosal bleeding and swelling of the floor of the mouth. He later developed epistaxis, hematuria, and melena. He had an isolated elevation of activated partial thromboplastin time (APTT) with very high levels of factor VIII inhibitor (1152 Bethesda units) and very low levels of Factor VIII (<1%). He was managed with supportive transfusion, bypass agents, and immunosuppressive therapy. AHA is a rare autoimmune bleeding disorder and is more commonly seen in the elderly population. Bleeding in AHA is usually sudden and sometimes life-threatening. Hence early hemostasis with bypassing agents and treatment with immunosuppressive agents should be initiated. Due to the rarity of the disorder, it is crucial to report AHA cases to create awareness and increase the index of suspicion of the clinicians for early diagnosis and treatment to prevent morbidity and mortality.
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Affiliation(s)
- Navdeep Singh
- Hospice and Palliative Care Medicine, North Shore Long Island Jewish Hospital, Manhasset, USA
| | - Sandeep Singh Lubana
- Hematology and Medical Oncology, State University of New York Downstate Medical Center, Brooklyn, USA
| | - Lech Dabrowski
- Hematology and Medical Oncology, State University of New York Downstate Medical Center, Brooklyn, USA.,Hematology and Medical Oncology, Brookdale Hospital Medical Center, Brooklyn, USA
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29
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Ye N, Liu Z, Xu G, Wang X, Wu F, Xu X, Wu W. Inhibitor eradication and bleeding management of acquired hemophilia A: a single center experience in China. ACTA ACUST UNITED AC 2020; 24:631-636. [PMID: 31514689 DOI: 10.1080/16078454.2019.1663028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objectives: Acquired hemophilia A (AHA) is a rare disease resulting from autoantibodies against coagulation factor VIII that leads to spontaneous bleeding. This study reports the clinical characteristics and treatment outcomes of a relatively sizable cohort of patients with AHA. Methods: We retrospectively analyzed the characteristics and outcomes of 42 patients with AHA diagnosed in our center from January 2014 through December 2018. Results: The FVIII activity (FVIII: C) was significantly suppressed (median 1.5%; interquartile range [IQR]: 0.9-3.5) by FVIII inhibitor (median 8 BU/mL; IQR: 4.0-16.0). Bypassing agents, PCC or FVIIa, were used in 14 patients for bleeding control without any adverse reaction; and most patients (90.5%, 38/42) were placed on immunosuppressive regimen, corticosteroid alone or in combination with cyclophosphamide. Patients treated with corticosteroids alone had a lower median inhibitor titer (8 BU/mL) than those treated with combination corticosteroids of cyclophosphamide (16 BU/mL) (p < 0.001). 97.4% (37/38) patients achieved complete remission (CR) after immunosuppression therapy, and the median time to CR in patients treated with corticosteroids alone was shorter than those with combination corticosteroids of cyclophosphamide (median 40 days; IQR: 31-65 vs. 51 days; IQR: 38-83, p = 0.301). 10 (26.3%) patients relapsed thereafter and were placed on combined corticosteroid and cyclophosphamide treatment, which yielded second remission in 8 patients (80%). Two patients died, one from uncontrolled post-surgical retroperitoneal hemorrhage and one from sepsis complicating corticosteroid therapy. Conclusion: The corticosteroid achieves a satisfactory outcome, particularly with low inhibitors titers; and combination of cyclophosphamide will facilitate remission in sever patients with high titers of inhibitors.
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Affiliation(s)
- Naifang Ye
- Department of Clinical Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China.,Department of Clinical Laboratory Medicine, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University , Hefei , People's Republic of China
| | - Zhenzhen Liu
- Department of Clinical Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Guanqun Xu
- Department of Clinical Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Xuefeng Wang
- Department of Clinical Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Fang Wu
- Department of Geriatrics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine , Shanghai , People's Republic of China
| | - Xiaoqian Xu
- Department of Hematology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine , Shanghai , People's Republic of China
| | - Wenman Wu
- Department of Clinical Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China.,Faculty of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai , People's Republic of China
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30
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Mavroeidis L, Vassou A, Zarkavelis G, Papadaki A, Mouzaki I, Ntellas P, Gkoura S, Gazouli I, Pentheroudakis G. Acquired Hemophilia in an Elderly Patient with Carcinoma of the Ampulla of Vater. Case Rep Oncol 2020; 13:1-6. [PMID: 32110212 PMCID: PMC7036531 DOI: 10.1159/000504338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 02/02/2023] Open
Abstract
Acquired hemophilia is a rare autoimmune bleeding disorder related to the production of autoantibodies that inhibit clotting factor VIII or IX. The underlying cause can be autoimmune disease, malignancy, pregnancy, or medications, but it is most commonly idiopathic. Here we present the case of an 81-year-old patient with locoregionally relapsed periampullary carcinoma who presented with soft tissue hematoma and an abnormally elevated activated partial thromboplastin time (aPTT) in the presence of a normal prothrombin time. A diagnosis of acquired hemophilia was established. The patient was managed with immunosuppressive prednisone and cyclophosphamide plus immunoglobulin G. He also received a cycle of chemotherapy with gemcitabine and oxaliplatin, because the underlying malignancy was the cause of the bleeding disorder. Care was complicated by neutropenia and nosocomial fever, but the patient eventually showed signs of clinical stability, while the aPTT decreased 2-fold. The patient was successfully discharged from the hospital and continued treatment in outpatient care.
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Affiliation(s)
- Leonidas Mavroeidis
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - Amalia Vassou
- Department of Hematology, University of Ioannina, Ioannina, Greece
| | - George Zarkavelis
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - Alexandra Papadaki
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - Ioanna Mouzaki
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece
| | - Panagiotis Ntellas
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - Stefania Gkoura
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - Ioanna Gazouli
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
| | - George Pentheroudakis
- Department of Medical Oncology, University of Ioannina, Ioannina, Greece.,Society for the Study of Clonal Heterogeneity of Neoplasia (EMEKEN), Ioannina, Greece
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Türkantoz H, Königs C, Knöbl P, Klamroth R, Holstein K, Huth-Kühne A, Heinz J, Eichler H, Tiede A. Cross-reacting inhibitors against recombinant porcine factor VIII in acquired hemophilia A: Data from the GTH-AH 01/2010 Study. J Thromb Haemost 2020; 18:36-43. [PMID: 31448877 DOI: 10.1111/jth.14618] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/22/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Recombinant porcine factor VIII (rpFVIII, OBI-1, susoctocog alfa) is used for the treatment of acute bleeds in patients with acquired hemophilia A (AHA). Inhibitors in AHA can sometimes cross-react with rpFVIII. OBJECTIVES To assess the frequency, strength, and determinants of cross-reactivity. PATIENTS/METHODS Baseline samples from 70 patients of the prospective, observational cohort study GTH-AH 01/2010 were assessed for anti-human FVIII and anti-rpFVIII inhibitors using modified Nijmegen-Bethesda assays, as well as anti-human FVIII domain reactivity using enzyme-linked immunoassay (ELISA). RESULTS Anti-human FVIII inhibitors were present in all samples ranging between 0.7 and 3891 Bethesda Units (BU)/mL. Inhibitors from 31 of 70 patients (44%) partially inhibited rpFVIII with anti-rpFVIII titers ranging between 0.5 and 471 BU/mL. Anti-rpFVIII titers were ≤5 BU in most patients. Patients with cross-reacting inhibitors, as compared to patients without, had significantly higher anti-human FVIII titers (27.8 versus 5.4 BU/mL) and lower baseline FVIII activity (<1 versus 2.6 IU/dL). The ratio between anti-rpFVIII to anti-human titers was highest for inhibitors involving the C1 domain. Cross-reactivity was very rare, if inhibitors reacted only with the C2 domain of FVIII (6%). An anti-human FVIII titer of >100 BU/mL predicted cross-reactivity with 97% likelihood, whereas an anti-human FVIII titer of <3.8 BU/mL predicted absent cross-reactivity with 90% likelihood. CONCLUSION Cross-reacting inhibitors should be considered when choosing a treatment for bleeding patients with AHA. Cross-reactivity is frequent in patients with anti-human FVIII titers of >100 BU/mL.
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Affiliation(s)
- Halet Türkantoz
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Christoph Königs
- Department of Pediatrics, Clinical and Molecular Hemostasis, University Hospital, Goethe University, Frankfurt am Main, Germany
| | - Paul Knöbl
- Hematology and Hemostasis, Vienna Medical University, Vienna, Austria
| | - Robert Klamroth
- Internal Medicine, Vivantes Clinic Friedrichshain, Berlin, Germany
| | - Katharina Holstein
- Hematology and Clinical Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Angela Huth-Kühne
- Hemophilia Care Center, SRH Kurpfalzkrankenhaus Heidelberg, Heidelberg, Germany
| | - Jürgen Heinz
- Hematology and Oncology, Freiburg University Hospital, Freiburg, Germany
| | - Hermann Eichler
- Institute of Clinical Hemostaseology and Transfusion Medicine, Saarland University and Saarland University Hospital, Homburg/Saar, Germany
| | - Andreas Tiede
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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Kim CH, Simmons SC, Wang D, Najafzadeh P, Azad A, Pham HP. An economic analysis of different treatments for bleeding in patients with acquired haemophilia. Vox Sang 2019; 115:192-199. [PMID: 31879973 DOI: 10.1111/vox.12877] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 11/07/2019] [Accepted: 11/30/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND Acquired haemophilia A (AHA), with potentially high risk of morbidity and mortality, occurs as a result of inhibitors against factor VIII. Bleeding due to AHA can be treated with activated prothrombin complex concentrate (aPCC), recombinant activated factor VII (rFVIIa) or recently, recombinant porcine-sequence factor VIII (rpFVIII). We extended our previous cost-effectiveness analysis (CEA) comparing rpFVIII against the available traditional options. METHODS For high-titred, haemorrhaging AHA patients treated with either aPCC, rFVIIa or rpFVIII, over the course of 6-days, a Markov simulation was conducted to evaluate the outcomes when these patients transitioned into any of the four following health states: (1) continuous bleeding, (2) thrombosis, (3) stop bleeding and (4) death, with states (2), (3) and (4) modelled as absorbing states. All model parameters were obtained from the medical literature, except the costs of aPCC, rFVIIa and the factor VIII assay, which came from our institutional data. RESULTS Excluding the cost of the initial treatment on day 0, the total subsequent treatment cost of rFVIIa was substantially more than the costs of aPCC and rpFVIII ($13 925 vs. $1778 vs. $6957, respectively). The average quality-adjusted life days (QALDs) gained from rpFVIII was lowest (4·89 vs. 4·9 for rFVIIa and 4·91 for aPCC). Overall, aPCC dominated the other two treatments. The model was determined to be robust across the tested ranges for all input variables. CONCLUSION Based on this economic model, for AHA patients with high titres who were bleeding, aPCC was the most cost-effective treatment option and may be considered for use if there is no clinical contraindication.
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Affiliation(s)
- Chong H Kim
- Department of Clinical Pharmacy, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Sierra C Simmons
- Department of Pathology, Michigan Pathology Specialists and Spectrum Health Hospitals, Grand Rapids, MI, USA
| | - Dandan Wang
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Parisa Najafzadeh
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Ameneh Azad
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Huy P Pham
- Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Lee A. Emergency management of patients with bleeding disorders: Practical points for the emergency physician. Transfus Apher Sci 2019; 58:553-562. [PMID: 31416711 DOI: 10.1016/j.transci.2019.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Emergency department (ED) physicians are often the first point of contact for patients who present with bleeding symptoms. Work up and management of bleeding in the emergency room can be a daunting task as it requires: (1) accurate diagnosis of the bleeding cause, of which there is long list of common and rare etiologies (2); appropriate investigations and interpretation of the results; and (3) timely management of bleeding symptoms to prevent limb- or life-threatening complications. Crucial to the management of a bleeding patient is a thorough yet focused history exploring bleeding symptoms, medications/drugs (anticoagulants, antiplatelets), mechanism of trauma/injury, personal and family history of diagnosed bleeding disorders or bleeding symptoms and recognizing acuity and severity of bleeding that requires immediate intervention. Physical examination should focus on signs of mucocutaneous versus deep tissue or joint bleeding and assessing for structural lesions that may contribute to bleeding symptoms in patients with known bleeding diathesis. In patients with diagnosed bleeding disorders, emergency care cards will usually outline the initial treatment (e.g. clotting factor replacement, DDAVP) which should be administered before pursuing investigations/imaging studies. Special attention must be paid to the patient with recurrent or unexplained bleeding, or unexplained coagulation studies. There should be a low threshold to consult hematology in these cases and involvement of hematology early in managing patients with bleeding disorders to improve outcomes. This paper is directed toward emergency physicians, pediatricians, and general internists and will highlight key concepts in the primary care and work up of diagnosed and undiagnosed bleeding disorders requiring urgent treatment.
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Affiliation(s)
- Adrienne Lee
- Departments of Medicine, Cumming School of Medicine, University of Calgary and the Southern Alberta Rare Blood and Bleeding Disorders Comprehensive Care Program, Foothills Medical Centre, Alberta Health Services, 1403-29th Street NW, Calgary, AB T2N 2T9, Canada.
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34
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Gokozan HN, Friedman JD, Schmaier AH, Downes KA, Farah LA, Reeves HM. Acquired Hemophilia A After Nivolumab Therapy in a Patient With Metastatic Squamous Cell Carcinoma of the Lung Successfully Managed With Rituximab. Clin Lung Cancer 2019; 20:e560-e563. [PMID: 31311716 DOI: 10.1016/j.cllc.2019.06.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/11/2019] [Accepted: 06/15/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Hamza N Gokozan
- Department of Pathology, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH
| | - Judah D Friedman
- Division of Hematology and Oncology, Department of Medicine, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH
| | - Alvin H Schmaier
- Division of Hematology and Oncology, Department of Medicine, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH
| | - Katharine A Downes
- Department of Pathology, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH
| | - Lisa A Farah
- Clinical Oncology, University Hospitals Geauga Medical Center, Chardon, OH
| | - Hollie M Reeves
- Department of Pathology, University Hospitals Cleveland Medical Center and Case Western Reserve University School of Medicine, Cleveland, OH.
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