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Pande A, Kumar A, Krishnani H, Acharya S, Shukla S. Recent Advances in the Management of Microangiopathic Hemolytic Anemias (MAHA): A Narrative Review. Cureus 2023; 15:e47196. [PMID: 38021690 PMCID: PMC10653637 DOI: 10.7759/cureus.47196] [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: 08/21/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Red blood cells (RBCs) start to break down early in hemolytic anemia, which can be chronic or life-threatening. It should be considered while determining if normocytic or macrocytic anemia is present. Hemolysis in the reticuloendothelial system may happen intravascularly, extravascularly, or both. It accounts for a broad spectrum of laboratory and clinical situations, both physiological and pathological. Whenever the frequency of RBC breakdown is rapid enough to lower hemoglobin levels below the normal range, hemolytic anemia occurs. Microangiopathic hemolytic anemia (MAHA) is a term used to describe non-immune hemolysis induced by intravascular RBC fragmentation caused by substances in the tiny blood arteries that generate schistocytes in the peripheral circulation. Microvasculature abnormalities, such as small arterioles and capillaries, are usually involved. Furthermore, MAHA can also be brought on by intravascular devices like a prosthetic heart valve or assistive technologies. Poor deformity results in entrapment, phagocytosis, antibody-mediated elimination through phagocytosis or direct complement activation, fragmentation brought about by microthrombi or acute mechanical stress, oxidation, or spontaneous cellular death. Hemolysis may cause acute anemia, jaundice, hematuria, dyspnea, tiredness, tachycardia, and possibly hypotension. This article aims to synthesize existing research, identify therapeutic strategies, and provide insights into current and emerging approaches for managing this complex hematological disorder.
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Affiliation(s)
- Arundhati Pande
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Abhishek Kumar
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Harshil Krishnani
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Sourya Acharya
- Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Samarth Shukla
- Pathology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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2
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Chaurasiya PS, Khatri A, Gurung S, Karki S, Shahi S, Aryal L. Rituximab for acute plasma-refractory thrombotic thrombocytopenic purpura: A case report. Ann Med Surg (Lond) 2022; 82:104789. [PMID: 36268380 PMCID: PMC9577965 DOI: 10.1016/j.amsu.2022.104789] [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] [Received: 08/01/2022] [Revised: 09/20/2022] [Accepted: 09/25/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction and importance Thrombotic thrombocytopenic purpura (TTP) is a rare disease due to deficiency of ADAMTS13 which can present with anemia and thrombocytopenia. The study highlights the role of PLASMIC score in diagnosis and rituximab in the treatment of this condition. Case presentation Herein, we report a case of 38 years old female who had presented with fever, irritability, and altered sensorium. On investigations, she had hemolytic anemia, and thrombocytopenia with peripheral blood smear showing occasional schistocytes and managed with steroids and plasma exchange. As her platelet, LDH, and a few other lab parameters failed to normalize and met the criteria of refractory TTP, hence she was started on 5 cycles of rituximab and her condition improved. Clinical discussion Thrombotic thrombocytopenic purpura can be presumed based upon PLASMIC score where if the score is 5 or more while ADAMTS13 assay is required for confirmation. It is a life-threatening condition where treatment options include therapeutic plasma exchange (PEX), glucocorticoids, Rituximab, and caplacizumab. Rituximab is considered particularly in refractory cases. Conclusion Thrombotic thrombocytopenic purpura can lead to complications due to low platelet counts. Hence, early diagnosis and intervention are crucial to prevent such complications. Thrombotic thrombocytopenic purpura is a rare disease due to deficiency of ADAMTS13 where patients can present with anemia and thrombocytopenia. PLASMIC score can be used for presumptive diagnosis of this condition while ADAMTS13 assay is required for confirmation. Steroids and plasma exchange are the preferred treatment. In case of refractory cases, Rituximab can play a role to treat as well as prevent recurrence.
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3
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Galstyan GM, Maschan AA, Klebanova EE, Kalinina II. [Treatment of thrombotic thrombocytopenic purpura]. TERAPEVT ARKH 2021; 93:736-745. [PMID: 36286842 DOI: 10.26442/00403660.2021.06.200894] [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: 07/10/2021] [Accepted: 07/10/2021] [Indexed: 11/22/2022]
Abstract
The review discusses approaches to treatment of acquired thrombotic thrombocytopenic purpuгa (aTTP). In patients with aTTP plasma exchanges, glucocorticosteroids allow to stop an acute attack of TTP, and use of rituximab allows to achieve remission. In recent years, caplacizumab has been used. Treatment options such as cyclosporin A, bortezomib, splenectomy, N-acetylcysteine, recombinant ADAMTS13 are also described. Separately discussed issues of management of patients with TTP during pregnancy, and pediatric patients with TTP.
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Affiliation(s)
| | - A A Maschan
- Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology
| | | | - I I Kalinina
- Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology
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Successful Treatment With Bortezomib for Refractory and Complicated Acquired Thrombotic Thrombocytopenic Purpura in an Adolescent Girl. J Pediatr Hematol Oncol 2021; 43:e587-e591. [PMID: 33306607 DOI: 10.1097/mph.0000000000002026] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/31/2020] [Indexed: 01/19/2023]
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a rare, dangerous, life-threatening disease characterized by microangiopathic hemolytic anemia and thrombocytopenia, along with organ dysfunction due to microangiopathy-related ischemia. Plasma exchange and steroids are used for initial treatment, and rituximab is often used in refractive patients. Caplacizumab, cyclophosphamide, and splenectomy are among other treatment options. It has been reported that bortezomib, a proteasome inhibitor, can be used in the management of refractory acquired TTP. Herein, we present a 16-year-old female patient who was monitored for acquired TTP and treated with high-dose steroids, plasma exchange, rituximab, cyclophosphamide, and N-acetylcysteine but developed renal, cardiac, gastrointestinal, and neurologic complications. The girl was then successfully treated with bortezomib, and she has been monitored in remission for 6 months. We consider that bortezomib is a beneficial treatment, especially in patients with refractory TTP.
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5
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Ramachandran P, Erdinc B, Abowali HA, Zahid U, Gotlieb V, Spitalewitz S. High Incidence of Thrombotic Thrombocytopenic Purpura Exacerbation Rate Among Patients With Morbid Obesity and Drug Abuse. Cureus 2021; 13:e14656. [PMID: 34055510 PMCID: PMC8144271 DOI: 10.7759/cureus.14656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/24/2021] [Indexed: 11/05/2022] Open
Abstract
This study aims to identify the baseline patient characteristics, clinical presentation, and response to treatment of 11 patients who were diagnosed with thrombotic thrombocytopenic purpura (TTP) between 2014 and 2020 at Brookdale University Hospital Medical Center, Brooklyn, NY. Laboratory and clinical parameters were recorded for 29 patients who received plasmapheresis in this time period. Of 29 patients, 11 had confirmed TTP and one was diagnosed with hereditary TTP. Young, black, and female patients made up the majority of our patient population. A high prevalence of obesity and drug abuse were seen among our patients. Five out of 11 were obese and four of them were morbidly obese; six out of 11 patients were positive for the drug screen including cannabinoids (3), opiates (2), benzodiazepines (1), PCP (1), and methadone (1). Four patients with a positive drug screen had acute kidney injury (AKI), and plasmapheresis helped them enhance their kidney function. We observed a high incidence of AKI and high TTP exacerbation rates in patients who were drug abusers and those who were morbidly obese. There is a paucity of data on the relationship of TTP with obesityor drug abuse and this needs further study.
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Affiliation(s)
- Preethi Ramachandran
- Hematology and Oncology, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Burak Erdinc
- Internal Medicine, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Hesham Ali Abowali
- Internal Medicine, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Umar Zahid
- Nephrology, Brookdale University Hospital Medical Center, Brooklyn, USA
| | - Vladimir Gotlieb
- Hematology and Oncology, Brookdale University Hospital Medical Center, Brooklyn, USA
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6
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Pisklakova A, Barbir J, Sambataro JP, Almanzar C, Manji F. Silent Thrombotic Thrombocytopenic Purpura: PLASMIC, Lessons Learned, and Current Management Overview. Cureus 2021; 13:e13803. [PMID: 33842174 PMCID: PMC8027957 DOI: 10.7759/cureus.13803] [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: 12/04/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a rare, life-threatening autoimmune or hereditary thrombotic microangiopathy (TMA) that may be difficult to recognize given the wide spectrum of presenting symptoms. The clinical diagnosis of TTP is based on thrombocytopenia, microangiopathic hemolytic anemia and is confirmed by a disintegrin-like and metalloproteinase with thrombospondin type one motif, member 13 (ADAMTS13) <10%. However, the latter confirmation is not rapidly available, and treatment is typically initiated based on the degree of clinical suspicion. The PLASMIC score was recently developed to distinguish between TMA patients with and without severe ADAMTS13 deficiency and used as an adjunct in the diagnosis of TTP when the clinical picture is not clear. Here we present the case of a completely asymptomatic female with no past medical history diagnosed with TTP after evaluation for thrombocytopenia found on a routine wellness visit. A high PLASMIC score was crucial in the decision to initiate treatment given an unusual asymptomatic presentation.
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Affiliation(s)
| | - Joshua Barbir
- Internal Medicine, Brandon Regional Hospital, Tampa, USA
| | | | | | - Faiza Manji
- Oncology, Brandon Regional Hospital, Tampa, USA
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Galindo-Calvillo CD, Rodríguez-Roque CS, Gómez-De León A, Tarín-Arzaga L, Gómez-Almaguer D. Treating thrombotic thrombocytopenic purpura without plasma exchange during the COVID-19 pandemic. A case report and a brief literature review. Transfus Apher Sci 2021; 60:103107. [PMID: 33714651 PMCID: PMC7912363 DOI: 10.1016/j.transci.2021.103107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/22/2021] [Accepted: 02/25/2021] [Indexed: 11/19/2022]
Abstract
We report the case of a patient diagnosed with a clinical relapse of acquired immune-mediated thrombotic thrombocytopenic purpura (TTP) who was successfully treated with low-dose rituximab plus corticosteroids without the use of plasma exchange (PEx), which was unavailable at the time due to the COVID-19 pandemic. Rituximab 100 mg weekly for 4 weeks was administered, combined with 1 mg/kg of prednisone, obtaining a complete hematological response in 6 weeks. This case suggests that PEx may be unnecessary for a subset of patients with relapsed TTP who are clinically stable without significant end-organ damage. A brief literature review regarding TTP patients treated without plasma exchange is also included.
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Affiliation(s)
- César David Galindo-Calvillo
- Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Carlos Saúl Rodríguez-Roque
- Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Andrés Gómez-De León
- Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - Luz Tarín-Arzaga
- Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | - David Gómez-Almaguer
- Facultad de Medicina y Hospital Universitario "Dr. José Eleuterio González", Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico.
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8
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Krecak I, Medic MG, Gveric–Krecak V, Roncevic P, Bašić Kinda S, Babel J, Radonic R. Coombs-positive refractory acquired thrombotic thrombocytopenic purpura in a patient with chronic myelomonocytic leukemia successfully treated with rituximab. Acta Clin Belg 2020; 75:357-361. [PMID: 31007140 DOI: 10.1080/17843286.2019.1608395] [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] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Acquired thrombotic thrombocytopenic purpura (aTTP) is a rare autoimmune disorder characterized by auto-antibodies to Willebrand factor (vWF) cleaving enzyme (ADAMTS13), resulting in unusually large vWF multimers that lead to platelet aggregation, microthrombi formation and microangiopathic hemolytic anemia. Hemolysis in aTTP is mechanical; thus, direct antiglobulin test (Coombs test) is usually negative. Multiple autoimmune conditions and various auto-antibodies have been described in the context of chronic myelomonocytic leukemia (CMML). In this paper, we describe the first case of CMML with auto-antibodies to ADAMTS13, presenting initially as plasmapheresis-refractory Coombs-positive aTTP. Results: Although our patient was not treated for CMML, a complete remission of aTTP was eventually achieved with rituximab. Conclusion; We propose that aTTP should be in the differential diagnosis of CMML patients with thrombocytopenia and anemia (Coombs positive or not) who develop signs of thrombotic microangiopathy. Further studies are much needed to decipher the immune-mediated processes in CMML.
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Affiliation(s)
- Ivan Krecak
- Department of Internal Medicine, General Hospital of Sibenik - Knin County, Sibenik, Croatia
| | - Marijana Grgic Medic
- Intensive Care Unit, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Velka Gveric–Krecak
- Department of Internal Medicine, General Hospital of Sibenik - Knin County, Sibenik, Croatia
| | - Pavle Roncevic
- Division of Hematology, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Sandra Bašić Kinda
- Division of Hematology, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Jaksa Babel
- Intensive Care Unit, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Radovan Radonic
- Intensive Care Unit, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
- School of Medicine, University of Zagreb, Zagreb, Croatia
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9
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Chao SH, Chang YL, Yen JC, Liao HT, Wu TH, Yu CL, Tsai CY, Chou YC. Efficacy and safety of rituximab in autoimmune and microangiopathic hemolytic anemia: a systematic review and meta-analysis. Exp Hematol Oncol 2020; 9:6. [PMID: 32322437 PMCID: PMC7161265 DOI: 10.1186/s40164-020-00163-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 03/28/2020] [Indexed: 11/10/2022] Open
Abstract
Background The efficacy and safety of rituximab (RTX) on hemolytic anemia (HA) is unknown. Therefore we retrospectively analyze the efficacy and safety of RTX in autoimmune hemolytic anemia (AIHA) and microangiopathic hemolytic anemia (MAHA) from the previous literature. Methods Data in clinical trials and observational studies were collected from PubMed, Cochrane, Embase, and Google Scholar until Oct 15, 2018. The efficacy and safety of RTX in patients with AIHA or MAHA were assessed and overall response rates (ORRs), complete response rates (CRRs), adverse events (AEs) and relapse rates (RRs) were extracted if available. A meta-analysis was performed with a random-effects model, estimating mean proportions in all studies, and relative rates in comparative studies. Results After quality assessment, a total of 37 investigations encompassing 1057 patients eligible for meta-analysis were included. Pooled mean proportion of ORR was 0.84 (95% confidence interval [CI] 0.80–0.88), and that of CRR was 0.61 (95% CI 0.49–0.73). Mean AE rate was 0.14 (95% CI 0.10–0.17), and mean RR was 0.21 (95% CI 0.15–0.26). Relative ORR was 1.18 (95% CI 1.02–1.36), and relative CRR was 1.17 (95% CI 0.98–1.39) fold more than the respective non-RTX counter parts. Relative AE rate was 0.77 (95% CI 0.36–1.63), and relative RR was 0.93 (95% CI 0.56–1.55) fold less than the respective non-RTX counter parts. Conclusion RTX is more effective than the treatments without RTX for AIHA and MAHA and is well-tolerated.
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Affiliation(s)
- Shih-Hsuan Chao
- 1Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Yuh-Lih Chang
- 2Department of Pharmacy, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jiin-Cherng Yen
- 1Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Hsien-Tzung Liao
- 3Division of Allergy Immunology & Rheumatology, Taipei Veterans General Hospital, 201 Shih-Pai Rd Sec 2, Taipei, 112 Taiwan
| | - Tsai-Hung Wu
- 4Division of Nephrology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chia-Li Yu
- 5Division of Rheumatology Immunology & Allergy, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chang-Youh Tsai
- 3Division of Allergy Immunology & Rheumatology, Taipei Veterans General Hospital, 201 Shih-Pai Rd Sec 2, Taipei, 112 Taiwan
| | - Yueh-Ching Chou
- 2Department of Pharmacy, Taipei Veterans General Hospital, Taipei, Taiwan
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Gómez-De León A, Villela-Martínez LM, Yáñez-Reyes JM, Gómez-Almaguer D. Advances in the treatment of thrombotic thrombocytopenic purpura: repurposed drugs and novel agents. Expert Rev Hematol 2020; 13:461-470. [DOI: 10.1080/17474086.2020.1750361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Andrés Gómez-De León
- Hematology Department, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario ‘Dr. José Eleuterio González’, Monterrey, México
| | - Luis Mario Villela-Martínez
- Centro Médico “Dr. Ignacio Chavez”. ISSSTESON, Hermosillo, México
- Universidad del Valle de México. Campus Hermosillo, Hermosillo, México
| | - José Miguel Yáñez-Reyes
- Hematology Department, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario ‘Dr. José Eleuterio González’, Monterrey, México
| | - David Gómez-Almaguer
- Hematology Department, Universidad Autónoma de Nuevo León, Facultad de Medicina y Hospital Universitario ‘Dr. José Eleuterio González’, Monterrey, México
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11
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Hanlon A, Metjian A. Caplacizumab in adult patients with acquired thrombotic thrombocytopenic purpura. Ther Adv Hematol 2020; 11:2040620720902904. [PMID: 32095224 PMCID: PMC7011322 DOI: 10.1177/2040620720902904] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/29/2019] [Indexed: 12/27/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is usually a fatal disease caused by a
deficiency of the metalloproteinase, ADAMTS13, often due to autoimmunity. This
leads to the development of pathogenic multimers of von Willebrand factor (vWF),
causing an inappropriate interaction of platelets and vWF. This results in a
thrombotic microangiopathy, which is treated with therapeutic plasma exchange
and immune suppression. Although this treatment has reduced the mortality of TTP
to only about 20%, there have been no recent significant advances in the
treatment of TTP. Recently, a novel agent has been approved for use in TTP.
Caplacizumab, which binds to the A1 domain of vWF, prevents the adhesion of
platelets to vWF. It is a first in-class ‘nanobody’, that in clinical trials has
shown marked efficacy in treating TTP and its complications. This review will
discuss the development and implications of caplacizumab in the treatment of
TTP.
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Affiliation(s)
| | - Ara Metjian
- Duke University, Box #3422, 100 Trent Drive, Durham, NC 27708-0187, USA
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12
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Song R, Chung SW, Lee YA. Concurrent treatment with rituximab and plasma exchange for severe refractory granulomatosis with polyangiitis: A case report. Medicine (Baltimore) 2019; 98:e18139. [PMID: 31860960 PMCID: PMC6940185 DOI: 10.1097/md.0000000000018139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Rituximab is recommended to induce remission of severe granulomatosis with polyangiitis (GPA). Plasma exchange (PE) may be considered in the setting of rapidly progressive glomerulonephritis (RPGN) with a serum creatinine increase of more than 5.6 mg/dl or diffuse alveolar hemorrhage (DAH). However, there are no sufficient studies on combination therapy with rituximab and PE in GPA. PATIENT CONCERNS A 23-year-old woman was admitted with fever, abdominal pain, and diarrhea on suspicion of infectious colitis. Colonoscopy showed hemorrhagic colitis and antibiotic treatment was ineffective. Physical examination revealed episcleritis and skin lesions similar to Janeway lesions or Osler nodes on her palms and soles. Transesophageal echocardiogram (TEE) revealed mitral valve vegetation mimicking infective endocarditis. However, no pathogen was grown in the blood culture. Ten days after admission, blood-tinged sputum and respiratory distress developed. Imaging studies of lung, bronchoscopy, and bronchoalveolar lavage indicated DAH. Moreover, serum creatinine levels rapidly increased from 0.8 mg/dl to 6.1 mg/dl with proteinuria. DIAGNOSIS The patient was diagnosed with GPA and non-infectious endocarditis, DAH, and RPGN, based on a biopsy which revealed pauci-immune crescentic glomerulonephritis with granuloma and leukocytoclastic vasculitis and antineutrophil cytoplasmic antibodies against proteinase 3- positivity. INTERVENTIONS Initial methylprednisolone pulse therapy (1 g daily for 3 days) proved unsuccessful. After initiating PE, creatinine levels began to slowly decline, but DAH continued to deteriorate. Rituximab combined with PE therapy was considered. We performed PE every 2 to 3 days for 5 total treatments combined with rituximab (375 mg/m, once weekly for 4 weeks). OUTCOMES After the combination treatment of rituximab and PE, alveolar hemorrhage stopped. Chest X-ray and laboratory data, including serum creatinine and hemoglobin, notably improved. Mitral valve vegetation was no longer observed in follow-up TEE. GPA remained stable with low dose prednisolone and immunosuppressants over a follow-up period of 5 years. LESSONS This case suggests that the use of rituximab and concurrent PE may represent a promising combination for severe and refractory GPA.
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13
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Picod A, Provôt F, Coppo P. Therapeutic plasma exchange in thrombotic thrombocytopenic purpura. Presse Med 2019; 48:319-327. [PMID: 31759790 DOI: 10.1016/j.lpm.2019.08.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 08/02/2019] [Indexed: 12/31/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a life-threatening disease related to the formation of microvascular thrombosis and subsequent organ failure. The disease is accompanied with microangiopathic haemolytic anaemia, consumptive thrombocytopenia and lies on a severe deficiency in ADAMTS13, the von Willebrand factor-cleaving protease. In the acquired, immune-mediated form, this deficiency is due to the production of autoantibodies directed against the enzyme. Therapeutic plasma exchange has been used empirically for decades and still represents the cornerstone of TTP treatment. However, a better understanding of pathophysiological mechanisms underlying the disease has led these last years to the development of highly effective targeted therapies that might in the future restraint the use of therapeutic plasma exchange.
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Affiliation(s)
- Adrien Picod
- Centre national de référence des microangiopathies thrombotiques, 75000 Paris, France
| | - François Provôt
- Centre national de référence des microangiopathies thrombotiques, 75000 Paris, France; Hôpital Albert-Calmette, service de néphrologie, 59000 Lille, France
| | - Paul Coppo
- Centre national de référence des microangiopathies thrombotiques, 75000 Paris, France; Assistance publique-Hôpitaux de Paris, hôpital Saint-Antoine, service d'hématologie, 75012 Paris, France; Sorbonne-Université, 75006 Paris, France.
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14
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Plautz WE, Raval JS, Dyer MR, Rollins-Raval MA, Zuckerbraun BS, Neal MD. ADAMTS13: origins, applications, and prospects. Transfusion 2018; 58:2453-2462. [PMID: 30208220 DOI: 10.1111/trf.14804] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 12/14/2022]
Abstract
ADAMTS13 is an enzyme that acts by cleaving prothrombotic von Willebrand factor (VWF) multimers from the vasculature in a highly regulated manner. In pathologic states such as thrombotic thrombocytopenic purpura (TTP) and other thrombotic microangiopathies (TMAs), VWF can bind to the endothelium and form large multimers. As the anchored VWF chains grow, they provide a greater surface area to bind circulating platelets (PLTs), generating unique thrombi that characterize TTP. This results in microvasculature thrombosis, obstruction of blood flow, and ultimately end-organ damage. Initial presentations of TTP usually occur in an acute manner, typically developing due to an autoimmune response toward, or less commonly a congenital deficiency of, ADAMTS13. Triggers for TMAs that can be associated with ADAMTS13 deficiency, including TTP, have been linked to events that place a burden on hemostatic regulation, such as major trauma and pregnancy. The treatment plan for cases of suspected TTP consists of emergent therapeutic plasma exchange that is continued on a daily basis until normalization of PLT counts. However, a subset of these patients does not respond favorably to standard therapies. These patients necessitate a better understanding of their diseases for the advancement of future therapeutic options. Given ADAMTS13's key role in the cleavage of VWF and the prevention of PLT-rich thrombi within the microvasculature, future treatments may include anti-VWF therapeutics, recombinant ADAMTS13 infusions, and ADAMTS13 expression via gene therapy.
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Affiliation(s)
- William E Plautz
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jay S Raval
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Mitchell R Dyer
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Marian A Rollins-Raval
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Brian S Zuckerbraun
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Matthew D Neal
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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Abstract
Daily therapeutic plasma exchange (TPE) transformed the historically fatal prognosis of acquired, anti-ADAMTS13 antibody-mediated thrombotic thrombocytopenic purpura (TTP), leading to the current overall survival rates of >80%. However, relapses occur in up to 40% of patients and refractory disease with fatal outcomes still occurs, typically within the first days of management. In this context, the introduction of rituximab has been the second major breakthrough in TTP management. Rituximab is now routinely recommended during the acute phase, typically in patients with a suboptimal response to treatment, and increasingly as frontline therapy, with high response rates in the following weeks. In more severe patients, salvage strategies typically include twice daily TPE, pulses of cyclophosphamide, as well as splenectomy in the more desperate cases. In this life-threatening and debilitating disease, relapses can be efficiently prevented in patients with a severe acquired ADAMTS13 deficiency and otherwise in remission with the use of rituximab. In the coming years, the TTP therapeutic landscape should be enriched by original strategies stemming from clinical experience and new agents that are currently being evaluated in large, international, clinical trials. Promising agents under evaluation include caplacizumab (an inhibitor of the glycoprotein-Ib/IX-Von-Willebrand factor axis), N-acetylcysteine, recombinant ADAMTS13, and anti-plasmocyte compounds.
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Affiliation(s)
- P Coppo
- Service d'hématologie, hôpital Saint-Antoine, université Pierre-et-Marie-Curie, centre de référence des microangiopathies thrombotiques, AP - HP, 184, rue du Faubourg-Saint-Antoine, 75012 Paris, France; Service d'hématologie, hôpital Saint-Antoine, 184, rue du Faubourg-Saint-Antoine, 75012 Paris, France; Inserm U1170, institut Gustave-Roussy, Villejuif, France; Université Sorbonne-Paris-Pierre-et-Marie-Curie (Univ Paris 6), Paris, France.
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16
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Abstract
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a rare and life-threatening thrombotic microangiopathy characterized by microangiopathic hemolytic anemia, severe thrombocytopenia, and organ ischemia linked to disseminated microvascular platelet rich-thrombi. TTP is specifically related to a severe deficiency in ADAMTS13 (a disintegrin and metalloprotease with thrombospondin type 1 repeats, member 13), the specific von Willebrand factor-cleaving protease. ADAMTS13 deficiency is most frequently acquired via ADAMTS13 autoantibodies, but rarely, it is inherited via mutations of the ADAMTS13 gene. The first acute episode of TTP usually occurs during adulthood, with a predominant anti-ADAMTS13 autoimmune etiology. In rare cases, however, TTP begins as soon as childhood, with frequent inherited forms. TTP is ∼2-fold more frequent in women, and its outcome is characterized by a relapsing tendency. Rapid recognition of TTP is crucial to initiate appropriate treatment. The first-line therapy for acute TTP is based on daily therapeutic plasma exchange supplying deficient ADAMTS13, with or without steroids. Additional immune modulators targeting ADAMTS13 autoantibodies are mainly based on steroids and the humanized anti-CD20 monoclonal antibody rituximab. In refractory or unresponsive TTP, more intensive therapies including twice-daily plasma exchange; pulses of cyclophosphamide, vincristine, or cyclosporine A; or salvage splenectomy are considered. New drugs including N-acetylcysteine, bortezomib, recombinant ADAMTS13, and caplacizumab show promise in the management of TTP. Also, long-term follow-up of patients with TTP is crucial to identify the occurrence of other autoimmune diseases, to control relapses, and to evaluate psychophysical sequelae. Further development of both patients’ registries worldwide and innovative drugs is still needed to improve TTP management.
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17
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Abstract
Thrombotic thrombocytopenic purpura (TTP; also known as Moschcowitz disease) is characterized by the concomitant occurrence of often severe thrombocytopenia, microangiopathic haemolytic anaemia and a variable degree of ischaemic organ damage, particularly affecting the brain, heart and kidneys. Acute TTP was almost universally fatal until the introduction of plasma therapy, which improved survival from <10% to 80-90%. However, patients who survive an acute episode are at high risk of relapse and of long-term morbidity. A timely diagnosis is vital but challenging, as TTP shares symptoms and clinical presentation with numerous conditions, including, for example, haemolytic uraemic syndrome and other thrombotic microangiopathies. The underlying pathophysiology is a severe deficiency of the activity of a disintegrin and metalloproteinase with thrombospondin motifs 13 (ADAMTS13), the protease that cleaves von Willebrand factor (vWF) multimeric strings. Ultra-large vWF strings remain uncleaved after endothelial cell secretion and anchorage, bind to platelets and form microthrombi, leading to the clinical manifestations of TTP. Congenital TTP (Upshaw-Schulman syndrome) is the result of homozygous or compound heterozygous mutations in ADAMTS13, whereas acquired TTP is an autoimmune disorder caused by circulating anti-ADAMTS13 autoantibodies, which inhibit the enzyme or increase its clearance. Consequently, immunosuppressive drugs, such as corticosteroids and often rituximab, supplement plasma exchange therapy in patients with acquired TTP.
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18
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Todorović Ž, Jovanovic M, Todorovic D, Petrovic D, Djurdjevic P. Thrombotic Thrombocytopenic Purpura: Etiopathogenesis, Diagnostics and Basic Principles of Treatment. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2017. [DOI: 10.1515/sjecr-2016-0026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Thrombotic thrombocytopenic purpura (TTP) is a clinical syndrome that manifests with thrombocytopenia, microangiopathic haemolytic anaemia and symptoms and signs of kidney and brain damage, but it rarely involves other organs. The main pathophysiological cause of TTP is diminished metalloproteinase ADAMTS13 activity; the main function of ADAMTS13 is to degrade large multimers of the von Willebrand factor. Diminished activity of ADAMTS13 is caused either by a genetic mutation in the gene that codes ADAMTS13 (congenital TTP) or by antibodies that block ADAMTS13 enzyme activity or accelerate the degradation of ADAMTS13 (acquired TTP). Clinically, TTP presents most frequently with signs and symptoms of brain and kidney damage with concomitant haemorrhagic syndrome. TTP is suspected when a patient presents with a low platelet count, microangiopathic haemolytic anaemia (negative Coombs tests, low haptoglobine concentration, increased serum concentration of indirect bilirubin and lactate dehydrogenase, increased number of schysocytes in peripheral blood) and the typical clinical presentation. A definitive diagnose can be made only by measuring the ADAMTS13 activity. The differential diagnosis in such cases includes both typical and atypical haemolytic uremic syndrome, disseminated intravascular coagulation, HELLP syndrome in pregnant women and other thrombotic microangiopathies. The first line therapy for TTP is plasma exchange. In patients with acquired TTP, in addition to plasma exchange, immunosuppressive medications are used (corticosteroids and rituximab). In patients with hereditary TTP, the administration of fresh frozen plasma is sometimes required.
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Affiliation(s)
- Željko Todorović
- Faculty of Medical Sciences, University of Kragujevac, Serbia
- Radnička 24/2, 34000 Kragujevac, Serbia
| | - Milena Jovanovic
- Center of Nephrology and Dialysis, Clinic for Urology and Nephrology, Clinical Center “Кragujevac”, Serbia
| | - Dusan Todorovic
- Faculty of Medical Sciences, University of Kragujevac, Serbia
| | - Dejan Petrovic
- Center of Nephrology and Dialysis, Clinic for Urology and Nephrology, Clinical Center “Кragujevac”, Serbia
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19
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Coppo P. Treatment of autoimmune thrombotic thrombocytopenic purpura in the more severe forms. Transfus Apher Sci 2016; 56:52-56. [PMID: 28110841 DOI: 10.1016/j.transci.2016.12.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Daily therapeutic plasma exchange (TPE) transformed the historically fatal prognosis of acquired, anti-ADAMTS13 antibody-mediated thrombotic thrombocytopenic purpura (TTP), leading to the current overall survival rates of >80%. However, relapses occur in up to 40% of patients and refractory disease with fatal outcomes still occurs. In this context, the introduction of rituximab has probably been the second major breakthrough in TTP management. Rituximab is now routinely recommended during the acute phase, typically in patients with a suboptimal response to treatment, or even as frontline therapy, with high response rates. In more severe patients, salvage strategies may include twice daily TPE, pulses of cyclophosphamide, vincristine, as well as splenectomy in the more desperate cases. In this life-threatening disease, relapses can be efficiently prevented in patients with a severe acquired ADAMTS13 deficiency and otherwise in remission with the use of rituximab. In the coming years, the TTP therapeutic landscape should be enriched by original strategies stemming from clinical experience and new agents that are currently being evaluated in large, ideally international, clinical trials. Promising agents under evaluation include N-acetylcysteine, bortezomib, recombinant ADAMTS13 and caplacizumab, an inhibitor of the glycoprotein-Ib/IX-von Willebrand factor axis.
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Affiliation(s)
- Paul Coppo
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service d'hématologie, Hôpital Saint Antoine, Paris, France; Inserm U1170, Institut Gustave Roussy, Villejuif, France; Université Pierre et Marie Curie (Univ Paris 6), France.
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Hu XR, Ying SW, Huang H, Sun J. [Retrospective studies on 36 patients with thrombotic thrombocytopenic purpura]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2016; 37:623-6. [PMID: 27535869 PMCID: PMC7365004 DOI: 10.3760/cma.j.issn.0253-2727.2016.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Indexed: 11/22/2022]
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Thejeel B, Garg AX, Clark WF, Liu AR, Iansavichus AV, Hildebrand AM. Long-term outcomes of thrombotic microangiopathy treated with plasma exchange: A systematic review. Am J Hematol 2016; 91:623-30. [PMID: 26910131 DOI: 10.1002/ajh.24339] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 02/17/2016] [Indexed: 12/12/2022]
Abstract
With the adoption of plasma exchange as standard treatment for thrombotic microangiopathy (TMA), more patients are surviving and long-term outcomes have greater relevance. We conducted a systematic review to synthesize and evaluate the quality of evidence on long-term outcomes of TMA among adults treated with plasma exchange and to identify factors that may be associated with a worse long-term prognosis. We searched databases from 1980 to 2013 for eligible articles published in any language. We included studies that reported outcomes in at least ten adults with a history of TMA treated with plasma exchange and at least 6 months of follow-up. We abstracted data in duplicate and assessed the methodological quality of each study using an assessment tool developed based on recommended validity criteria. We screened 6672 articles, reviewed 213, and included 34 studies totaling 1182 patients (study median [range], 24 [10-118]). The mean (or median) follow-up ranged from 6 months to 13 years. The cumulative incidence of relapse and mortality was highly variable and ranged from 3 to 84 and 0 to 61%, respectively. The incidence of other outcomes across 10 studies also varied (outcomes included hypertension, kidney disease, preeclampsia, stroke, seizure, severe cognitive impairment, and depression); in three other studies, long-term neurocognitive function and health-related quality of life were significantly lower than in the general population. Patients who survive an episode of TMA may be susceptible to long-term vascular complications, but the magnitude of this risk and how to mitigate it remains unclear. Am. J. Hematol. 91:623-630, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Bashiar Thejeel
- Schulich School of Medicine; Western University; London Ontario Canada
- Kidney Clinical Research Unit, London Health Sciences Centre; London Ontario Canada
| | - Amit X. Garg
- Kidney Clinical Research Unit, London Health Sciences Centre; London Ontario Canada
- Department of Epidemiology and Biostatistics; Western University; London Ontario Canada
- Division of Nephrology; Western University; London Ontario Canada
| | - William F. Clark
- Kidney Clinical Research Unit, London Health Sciences Centre; London Ontario Canada
- Division of Nephrology; Western University; London Ontario Canada
| | - Aiden R. Liu
- Kidney Clinical Research Unit, London Health Sciences Centre; London Ontario Canada
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22
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Reynaud Q, Killian M, Robles A, Mounsef F, Camdessanché JP, Mariat C, Cathébras P. Le rituximab dans la vraie vie : revue d’utilisation du rituximab de 2010 à 2013 au CHU de Saint-Étienne. Rev Med Interne 2015; 36:800-12. [DOI: 10.1016/j.revmed.2015.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 05/03/2015] [Accepted: 06/05/2015] [Indexed: 12/13/2022]
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23
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Froissart A, Veyradier A, Hié M, Benhamou Y, Coppo P. Rituximab in autoimmune thrombotic thrombocytopenic purpura: A success story. Eur J Intern Med 2015; 26:659-65. [PMID: 26293834 DOI: 10.1016/j.ejim.2015.07.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/30/2015] [Accepted: 07/31/2015] [Indexed: 11/20/2022]
Abstract
Despite a significant improvement of thrombotic thrombocytopenic purpura (TTP) prognosis since the use of plasma exchange, morbidity and mortality remained significant because of poor response to standard treatment or exacerbations and relapses. Rituximab, a chimeric monoclonal antibody directed against the B-lymphocyte CD20 antigen, has shown a particular interest in this indication. Recent studies also reported strong evidence for its efficiency in the prevention of relapses. This review addresses these recent progresses and still opened questions in this topic: should rituximab be proposed in all patients at the acute phase? Should all patients benefit from a preemptive treatment? Is the infectious risk acceptable in this context?
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Affiliation(s)
- Antoine Froissart
- Service de médecine interne, CHI, Créteil, France; Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France
| | - Agnès Veyradier
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service d'hématologie biologique, Hôpital Lariboisière, Paris, France; Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Miguel Hié
- Service de Médecine Interne, Hôpital la Pitié-Salpétrière, Paris, France
| | - Ygal Benhamou
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service de médecine interne, CHU Charles Nicolle, Rouen, France
| | - Paul Coppo
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service d'hématologie, Hôpital Saint Antoine, Paris, France; Inserm U1009, Institut Gustave Roussy, Villejuif, France.
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24
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Shah S, Geetha D. Place in therapy of rituximab in the treatment of granulomatosis with polyangiitis and microscopic polyangiitis. Immunotargets Ther 2015; 4:173-83. [PMID: 27471722 PMCID: PMC4918256 DOI: 10.2147/itt.s55516] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Granulomatosis with polyangiitis and microscopic polyangiitis are small vessel vasculitides characterized by circulating antineutrophil circulating antibodies. Standard treatment for active severe disease has consisted of cyclophosphamide with glucocorticoids with or without plasmapheresis, which achieves approximately 75% sustained remission, but carries significant adverse effects such as malignancy, infertility, leukopenia, and infections. The role of B cells in the pathogenesis of anti-neutrophil circulating antibodies-associated vasculitis has been established, and as such, rituximab, a monoclonal anti-CD20 antibody, has been studied in treatment of active granulomatosis with polyangiitis and microscopic polyangiitis (induction) and in maintaining remission. Rituximab has been shown to be effective in inducing remission in several retrospective studies in patients with refractory disease or cyclophosphamide intolerance. The RAVE and RITUXVAS trials demonstrated rituximab is a noninferior alternative to standard cyclophosphamide-based therapy; however, its role in elderly patients and patients with severe renal disease warrants further investigation. Rituximab has been compared with azathioprine for maintaining remission in the MAINRITSAN trial and may be more efficacious in maintaining remission in patients treated with cyclophosphamide induction. Rituximab is not without risks and carries a similar adverse event risk rate as cyclophosphamide in randomized control trials. However, its use can be considered over cyclophosphamide in patients who have relapsing or refractory disease or in young patients seeking to preserve fertility.
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Affiliation(s)
- Shivani Shah
- Department of Medicine, Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Duvuru Geetha
- Department of Medicine, Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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25
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Wieland I, Kentouche K, Jentzsch M, Lothschütz D, Graf N, Sykora KW. Long-term remission of recurrent thrombotic thrombocytopenic purpura (TTP) after Rituximab in children and young adults. Pediatr Blood Cancer 2015; 62:823-9. [PMID: 25623397 DOI: 10.1002/pbc.25398] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 11/18/2014] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Acquired thrombotic-thrombocytopenic purpura (TTP) is an autoimmune disorder characterized by autoantibodies directed against the von Willebrand metalloprotease. Depletion of B-cells can prevent synthesis of this antibody and presumably induce remission of the disease. In adults, Rituximab (RTX) was effective in relapsed or refractory acute idiopathic TTP. PROCEDURE We report the long-term follow-up of five children and two adolescents (age at diagnosis 6-19 years, median 15 years) who were treated with RTX for recurrent or refractory TTP. Some of the patients suffered from recurrent refractory TTP with long histories of previous unsuccessful treatments. One had TTP associated with pancreatitis. RESULTS Three patients have been in complete remission after one treatment course with RTX. Four relapsed after 1 to 5 years, respectively, and responded to additional courses of RTX. One of them is in long-term remission after a third course of RTX and splenectomy. Compared to literature reports with a median follow up of 1.4 years (3-46 month), follow-up of our patients after treatment with RTX was very long (2-12.7 years, median 7.7 years). RTX therapy could induce long-term remissions in children with refractory recurrent TTP. Median duration of remission was longer and relapses per patient-years less frequent in patients receiving RTX compared to patients not receiving it. Remissions were achieved in children within one week, much faster than in adults. CONCLUSION Because of the rapid induction of remissions, RTX may be suitable for first-line therapy in pediatric acquired antibody-mediated TTP.
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Affiliation(s)
- Ivonne Wieland
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
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26
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Sauvètre G, Grange S, Froissart A, Veyradier A, Coppo P, Benhamou Y. La révolution des anticorps monoclonaux dans la prise en charge des microangiopathies thrombotiques. Rev Med Interne 2015; 36:328-38. [DOI: 10.1016/j.revmed.2014.10.364] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/22/2014] [Accepted: 10/24/2014] [Indexed: 12/15/2022]
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27
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Clark WF, Rock G, Barth D, Arnold DM, Webert KE, Yenson PR, Kelton JG, Li L, Foley SR. A phase-II sequential case-series study of all patients presenting to four plasma exchange centres with presumed relapsed/refractory thrombotic thrombocytopenic purpura treated with rituximab. Br J Haematol 2015; 170:208-17. [PMID: 25855259 DOI: 10.1111/bjh.13408] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 02/16/2015] [Indexed: 11/26/2022]
Abstract
The primary objective of this phase II study was to evaluate the efficacy of rituximab in the management of adult patients with physician-diagnosed presumed thrombotic thrombocytopenic purpura (TTP); relapsed or refractory. We conducted a multicentre study in four Canadian hospital-based apheresis units. Forty patients with presumed TTP (20 refractory and 20 relapsing) were sequentially enrolled and all received rituximab in a standardized manner. A complete response was documented in 14 of 19 refractory patients by week 8 and 15/16 were alive and in remission at 52 weeks (one patient was lost to follow-up, one was a non-responder, and three died). Among relapsing patients, 16/18 had a complete response at week 8 and 18/18 at week 52 (one patient lost to follow-up and one withdrew). At 1 year, all relapsing and 85% of refractory patients survived. Of 38/40 patients who had ADMATS13 testing at study entry, 13/19 refractory and 10/19 relapsing patients had ADAMTS13 < 10% (typical TTP); whereas 6/19 refractory and 9/19 relapsing cases had ADAMTS13 > 10% (other thrombotic microangiopathy; TMA). Refractory-typical TTP in contrast to refractory-other TMA and all relapsing patients treated with plasma exchange and rituximab, were less likely to be responsive and more likely to die or relapse.
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Affiliation(s)
- William F Clark
- Division of Nephrology, Department of Medicine, Western University, London, ON, Canada
| | - Gail Rock
- Department of Pathology, University of Ottawa, Ottawa, ON, Canada
| | - David Barth
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Donald M Arnold
- Division of Hematology and Thromboembolism, Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Kathyrn E Webert
- Division of Hematology and Thromboembolism, Department of Medicine and Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Paul R Yenson
- Division of Hematology, Department of Medicine, Vancouver General Hospital, Vancouver, BC, Canada
| | - John G Kelton
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Lihua Li
- Division of Nephrology, Department of Medicine, Western University, London, ON, Canada
| | - Steven R Foley
- Division of Clinical Pathology, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
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28
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How I treat refractory thrombotic thrombocytopenic purpura. Blood 2015; 125:3860-7. [PMID: 25784681 DOI: 10.1182/blood-2014-11-551580] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 03/07/2015] [Indexed: 01/01/2023] Open
Abstract
Acquired thrombotic thrombocytopenic purpura (TTP) is characterized by thrombocytopenia and microangiopathic hemolytic anemia (MAHA) without an obvious cause, and may include fever, mild renal failure, and neurologic deficits. It is characterized by a deficiency of the von Willebrand factor (VWF) cleaving enzyme, ADAMTS13 (a disintegrin and metalloproteinase, with a thrombospondin type 1 motif, member 13), resulting in formation of microthrombi in the high sheer environment of the microvasculature. This causes microvascular occlusion, MAHA, and organ ischemia. Diagnosis is based on the presence of clinical symptoms, laboratory aberrations consistent with MAHA, decreased ADAMTS13 activity, and possibly presence of anti-ADAMTS13 autoantibodies. Upfront treatment of acute TTP includes plasma exchange and corticosteroids. A significant number of patients are refractory to this treatment and will require further interventions. There are limited data and consensus on the management of the refractory TTP patient. Management involves simultaneously ruling out other causes of thrombocytopenia and MAHA, while also considering other treatments. In this article, we describe our management of the patient with refractory TTP, and discuss use of rituximab, increased plasma exchange, splenectomy, and immunosuppressive options, including cyclophosphamide, vincristine, and cyclosporine. We also review recent evidence for the potential roles of bortezomib and N-acetylcysteine, and explore new therapeutic approaches, including recombinant ADAMTS13 and anti-VWF therapy.
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29
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The role of rituximab in the management of patients with acquired thrombotic thrombocytopenic purpura. Blood 2015; 125:1526-31. [PMID: 25573992 DOI: 10.1182/blood-2014-10-559211] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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30
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Coppo P, Froissart A. Treatment of thrombotic thrombocytopenic purpura beyond therapeutic plasma exchange. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2015; 2015:637-643. [PMID: 26637782 DOI: 10.1182/asheducation-2015.1.637] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Daily therapeutic plasma exchange (TPE) transformed the historically fatal prognosis of acquired, anti-ADAMTS13 antibody-mediated thrombotic thrombocytopenic purpura (TTP), leading to the current overall survival rates of 80%-85%. However, relapses occur in ~40% of patients and refractory disease with fatal outcomes still occurs. In this context, the introduction of rituximab has probably been the second major breakthrough in TTP management. Rituximab is now routinely recommended during the acute phase, typically in patients with a suboptimal response to treatment, or even as frontline therapy, with high response rates. In more severe patients, salvage strategies may include twice-daily TPE, pulses of cyclophosphamide, vincristine, as well as splenectomy in more desperate cases. In this life-threatening disease, relapse prevention represents a major goal. Persistent severe acquired ADAMTS13 deficiency in patients who are otherwise in remission is associated with a high risk of relapse and preemptive treatment with rituximab may be considered in this context. In the coming years, the TTP therapeutic landscape should be enriched by original strategies stemming from clinical experience and new agents that are currently being evaluated in large, ideally international, clinical trials. Promising agents under evaluation include N-acetylcysteine, bortezomib, recombinant ADAMTS13, and inhibitors of the glycoprotein-Ib/IX-von Willebrand factor axis.
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Affiliation(s)
- Paul Coppo
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service d'hématologie, Hôpital Saint Antoine, Paris, France; Inserm U1170, Institut Gustave Roussy, Villejuif, France; Université Pierre et Marie Curie, Paris, France; and
| | - Antoine Froissart
- Centre de Référence des Microangiopathies Thrombotiques, AP-HP, Paris, France; Service de médecine interne, CHI Créteil, Paris, France
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31
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Differing tales of two patients after receiving a kidney transplant from a donor with disseminated intravascular coagulation. Case Rep Transplant 2014; 2014:754256. [PMID: 25061532 PMCID: PMC4100278 DOI: 10.1155/2014/754256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/31/2014] [Accepted: 06/16/2014] [Indexed: 11/17/2022] Open
Abstract
In order to decrease the time on the deceased donor kidney wait list and to have more organs available, criteria for acceptable organs for transplant could be made less stringent. There are reports of successful recipient outcomes using kidney donors presenting with disseminated intravascular coagulation (DIC). We report a unique circumstance where two patients received kidneys from the same deceased donor who had DIC; one patient developed thrombotic microangiopathy (TMA) while the other did not. This difference in outcome may indicate that both donor and recipient factors contribute to the development of posttransplant TMA.
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32
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Refractory Thrombotic Thrombocytopenic Purpura Associated With Primary Sjogren Syndrome Treated With Rituximab. Am J Ther 2014; 21:e56-60. [DOI: 10.1097/mjt.0b013e3182459aa0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Scully M, Goodship T. How I treat thrombotic thrombocytopenic purpura and atypical haemolytic uraemic syndrome. Br J Haematol 2014; 164:759-66. [PMID: 24387053 PMCID: PMC4163720 DOI: 10.1111/bjh.12718] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Thrombotic thrombocytopenic purpura (TTP) and atypical haemolytic uraemic syndrome (aHUS) are acute, rare life‐threatening thrombotic microangiopathies that require rapid diagnosis and treatment. They are defined by microangiopathic haemolytic anaemia and thrombocytopenia, with renal involvement primarily in aHUS and neurological and cardiological sequelae in TTP. Prompt treatment for most cases of both conditions is with plasma exchange initially and monoclonal therapy (rituximab in TTP and eculizumab in aHUS) as the mainstay of therapy. Here we discuss the diagnosis and therapy for both disorders.
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Affiliation(s)
- Marie Scully
- Department of Haematology, University College London Hospital, London, UK
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34
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Solak Y, Selcuk NY, Gaipov A, Ucar R, Biyik Z, Acar K. Thrombotic thrombocytopenic purpura secondary to ABO group incompatible blood transfusion in a patient after cardiac surgery. Indian J Crit Care Med 2013; 17:234-6. [PMID: 24133332 PMCID: PMC3796903 DOI: 10.4103/0972-5229.118440] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The triggers of secondary thrombotic thrombopcytopenic purpura (TTP) include drug toxicity, radiation and high-dose chemotherapy, angioinvasive infections, surgery and acute graft versus host disease. TTP secondary to surgery have been reported in a number of cases. Most of the cases have been occurred after open heart surgery. Extensive endothelial damage is held responsible as the initiating mechanism in postoperative TTP cases. However, there is no report of secondary TTP describing development owing to ABO incompatible blood transfusion. Here, we describe a patient who developed TTP after transfusion of ABO incompatible blood during hospitalization for bypass surgery. We also propose a hypothesis which may account for the possible underlying mechanism.
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Affiliation(s)
- Yalcin Solak
- Department of Nephrology, Konya University Meram School of Medicine, Meram, Konya, Turkey
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35
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Goyal J, Adamski J, Lima JL, Marques MB. Relapses of thrombotic thrombocytopenic purpura after treatment with rituximab. J Clin Apher 2013; 28:390-4. [DOI: 10.1002/jca.21289] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Revised: 06/10/2013] [Accepted: 06/19/2013] [Indexed: 11/12/2022]
Affiliation(s)
- Jatinder Goyal
- Department of Medicine; University of Alabama at Birmingham; Birmingham Alabama
| | - Jill Adamski
- Department of Pathology; University of Alabama at Birmingham; Birmingham Alabama
| | | | - Marisa B. Marques
- Department of Pathology; University of Alabama at Birmingham; Birmingham Alabama
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36
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Kiss JE, Uhl L. Telltale signs of progress in the management of thrombotic thrombocytopenic purpura. Transfusion 2013; 52:2498-501. [PMID: 23231672 DOI: 10.1111/j.1537-2995.2012.03946.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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37
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Dose kidney transplant nephrectomy stop disease progression in plasma exchange resistant post transplant hemolytic uremic syndrome? A case report. J Nephropathol 2013; 2:85-9. [DOI: 10.5812/nephropathol.8944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 05/25/2012] [Accepted: 05/30/2012] [Indexed: 11/16/2022] Open
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38
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Iioka F, Shimomura D, Ishii T, Maesako Y, Ohgoe K, Nakamura F, Matsuo S, Ohno H. Short- and long-term effects of rituximab for the treatment of thrombotic thrombocytopenic purpura: four case reports. Int J Hematol 2012; 96:506-12. [PMID: 22878941 DOI: 10.1007/s12185-012-1162-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Revised: 07/26/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
Abstract
We report four cases of thrombotic thrombocytopenic purpura (TTP) successfully treated with rituximab in combination with plasma exchange and other immunosuppressive agents. All four cases fulfilled the diagnostic criteria of TTP with severe deficiencies in ADAMTS13 activity and a detectable anti-ADAMTS13 inhibitor. Four weekly doses of 375 mg/m(2) rituximab were initiated on day 3-29 of presentation as a salvage treatment for relapsing/refractory disease in three patients and as a first-line treatment in one. Resolution of clinical symptoms and hematological abnormalities occurred as early as the second dose and, after the completion of treatment, all four patients achieved complete response (CR). They are currently free from relapse and the duration of CR has been 13-72 months. During the treatment course, the level of ADAMTS13 activity and the titer of the inhibitor correlated well with resolution or exacerbation of the disease. This report suggests that rituximab exhibits short- and long-term favorable effects for the treatment of TTP and that a severe ADAMTS13 deficiency and ADAMTS13 inhibitor positivity may support early administration of rituximab in both acute/refractory and relapsing cases.
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Affiliation(s)
- Futoshi Iioka
- Department of Hematology, Tenri Hospital, 200 Mishima-cho, Tenri, Nara 632-8552, Japan.
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39
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Bilateral nephrectomy for the treatment of refractory lupus nephritis with features overlapping with thrombotic microangiopathy resembling thrombotic thrombocytopenia purpura. J Clin Rheumatol 2012; 18:185-8. [PMID: 22647858 DOI: 10.1097/rhu.0b013e31825826ae] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We report a patient with a diagnosis of systemic lupus erythematosus who concurrently developed a syndrome of thrombotic microangiopathy that resembled thrombotic thrombocytopenic purpura. The patient underwent plasma exchange and immunosuppressive therapy for months before clinical improvement was finally achieved through bilateral nephrectomy. Ultimately, our patient died of disseminated aspergillosis from prolonged immunosuppression. We believe that recognition of bilateral nephrectomy as a potential treatment earlier in her course would have spared her this unfortunate demise. We hope that this review of current literature will help the reader to consider bilateral nephrectomy in patients with refractory systemic lupus erythematosus with clinical overlap of thrombotic microangiopathy resembling thrombotic thrombocytopenic purpura.
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40
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Rituximab as prophylaxis in chronic relapsing thrombotic thrombocytopenic purpura. Blood Coagul Fibrinolysis 2012; 23:338-41. [DOI: 10.1097/mbc.0b013e3283529184] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Abstract
In 1924, Dr Eli Moschcowitz described a 16-year-old adolescent girl with abrupt onset of petechiae, hemolytic anemia, followed by paralysis, coma, and death. Autopsy showed widespread hyaline thrombi in the terminal arterioles and capillaries of various organs. The syndrome described by Moschowitz is now known as thrombotic thrombocytopenic purpura.
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42
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Engelmann L. [Thrombophilic states in intensive care medicine]. Med Klin Intensivmed Notfmed 2011; 106:189-97. [PMID: 22033885 DOI: 10.1007/s00063-011-0015-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Accepted: 09/19/2011] [Indexed: 12/19/2022]
Abstract
Thrombophilic states are common in intensive care medicine. Generally, they are complications of serious underlying diseases or adverse effects of treatment measures. The attributive mortality rate for thrombophilic states is high. Early recognition and management are, thus, indispensable. In this review, important diagnostic and therapeutic aspects are briefly summarized. Leading symptoms and the context to the underlying disease or therapy, which result in a thrombophilic state, are the basics for a specific diagnostic workup. Almost all current treatment recommendations are based on expert opinion.
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Affiliation(s)
- L Engelmann
- Klinik für Innere Medizin III, Krankenhaus Köthen GmbH, Hallesche Strasse 29, Köthen, Germany.
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43
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Scully M, McDonald V, Cavenagh J, Hunt BJ, Longair I, Cohen H, Machin SJ. A phase 2 study of the safety and efficacy of rituximab with plasma exchange in acute acquired thrombotic thrombocytopenic purpura. Blood 2011; 118:1746-53. [PMID: 21636861 DOI: 10.1182/blood-2011-03-341131] [Citation(s) in RCA: 277] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The safety and efficacy of weekly rituximab 375 mg/m(2) (×4), given within 3 days of acute TTP admission, with standard therapy (PEX and steroids) was evaluated. Clinical outcomes were compared to historical controls (n = 40) who had not received rituximab. Within the trial group, 15 of 40 required ICU admission and 15% of all cases with the highest troponin T levels on admission were ventilated. Before the second rituximab infusion, 68% of cases had a platelet count > 50 × 10(9)/L and 38% > 150 × 10(9)/L. Fewer PEX were required in whites compared to nonwhite in the rituximab group (mean 14 vs 21, P = .0095). Inpatient stay was reduced by 7 days in the non-ICU trial cases compared to historical controls (P = .04), especially in whites, with a mean reduction of 7 days (P = .05). Ten percent of trial cases relapsed, median, 27 months (17-31 months), compared to 57% in historical controls, median 18 months (3-60 months; P = .0011). There were no excess infections or serious adverse events with rituximab. In conclusion, rituximab appears a safe and effective therapy. Inpatient stay and relapse are significantly reduced in the rituximab cohort. Rituximab should be considered in conjunction with standard therapy on acute presentation of TTP. This study was registered at www.clinicaltrials.gov as NCT009-3713.
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MESH Headings
- ADAM Proteins/immunology
- ADAMTS13 Protein
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal, Murine-Derived/adverse effects
- Antibodies, Monoclonal, Murine-Derived/immunology
- Antibodies, Monoclonal, Murine-Derived/therapeutic use
- Antigens, CD19/immunology
- Female
- Humans
- Immunologic Factors/adverse effects
- Immunologic Factors/immunology
- Immunologic Factors/therapeutic use
- Male
- Middle Aged
- Plasma Exchange
- Purpura, Thrombotic Thrombocytopenic/drug therapy
- Purpura, Thrombotic Thrombocytopenic/immunology
- Purpura, Thrombotic Thrombocytopenic/prevention & control
- Purpura, Thrombotic Thrombocytopenic/therapy
- Recurrence
- Rituximab
- Young Adult
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Affiliation(s)
- Marie Scully
- Department of Haematology, University College London Hospital, London, United Kingdom.
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44
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[Response to rituximab in two patients with plasma exchange-refractory thrombotic thrombocytopenic purpura]. Med Clin (Barc) 2011; 137:139-40. [PMID: 21074219 DOI: 10.1016/j.medcli.2010.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2010] [Accepted: 07/27/2010] [Indexed: 11/21/2022]
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45
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Barcellini W, Zanella A. Rituximab therapy for autoimmune haematological diseases. Eur J Intern Med 2011; 22:220-9. [PMID: 21570637 DOI: 10.1016/j.ejim.2010.12.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 12/21/2010] [Accepted: 12/22/2010] [Indexed: 01/19/2023]
Abstract
Autoimmune haematological diseases are characterized by the production of antibodies against blood proteins or cells, and comprise primary immune thrombocytopenia, autoimmune haemolytic anaemia, acquired haemophilia, and thrombotic thrombocytopenic purpura. Current treatments for these disorders include corticosteroids, cytotoxic drugs and splenectomy, which may be associated with significant systemic toxicity and/or morbility. B cells play a key role in both the development and perpetuation of autoimmunity, since they produce autoantibodies but also function as antigen-presenting cells, and release immunomodulatory cytokines. Rituximab, an anti-CD20 monoclonal antibody that specifically depletes B cells, may be an effective treatment strategy for patients with autoimmune disorders. This article reviews data of the literature, showing that patients with autoimmune haematological diseases can respond to rituximab irrespective of age and number or type of prior treatments. These data suggest that rituximab provides an effective and well-tolerated treatment option for these conditions.
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Affiliation(s)
- Wilma Barcellini
- U.O. Ematologia 2, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.
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46
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Dierickx D, Delannoy A, Saja K, Verhoef G, Provan D. Anti-CD20 monoclonal antibodies and their use in adult autoimmune hematological disorders. Am J Hematol 2011; 86:278-91. [PMID: 21328427 DOI: 10.1002/ajh.21939] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Revised: 11/15/2010] [Accepted: 11/16/2010] [Indexed: 12/14/2022]
Abstract
Autoimmune hematological disorders encompass a broad group of hematological conditions characterized by the loss of self-tolerance to a variety of antigens. Despite good response to first-line therapy in the majority of patients, relapses are common, necessitating new and safe therapeutic options. The anti-CD20 monoclonal antibody rituximab has led to substantial improvement in the treatment of malignant and immune-mediated disorders involving B cells. Although experience with rituximab in immune-mediated hematological disorders is rarely supported by randomized trials, there is now substantial experience with rituximab suggesting that anti-CD20 therapy is an effective and well-tolerated alternative to immunosuppressive therapy in these disorders. However, caution is needed based on recent reports describing-sometimes severe-rituximab-related complications.
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Affiliation(s)
- Daan Dierickx
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium.
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47
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Rituximab for managing relapsing or refractory patients with idiopathic thrombotic thrombocytopenic purpura--haemolytic uraemic syndrome. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2010; 8:203-10. [PMID: 20671883 DOI: 10.2450/2009.0101-09] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Received: 04/14/2009] [Revised: 08/06/2009] [Indexed: 11/21/2022]
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48
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Hermann R, Pfeil A, Busch M, Kettner C, Kretzschmar D, Hansch A, La Rosée P, Wolf G. [Very severe thrombotic thrombocytopenic purpura (TTP) after H1N1 vaccination]. ACTA ACUST UNITED AC 2010; 105:663-8. [PMID: 20878304 DOI: 10.1007/s00063-010-1107-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Accepted: 07/12/2010] [Indexed: 12/01/2022]
Abstract
BACKGROUND Thrombotic thrombocytopenic purpura (TTP) is a severe disease with microthrombi in various organs. The idopathic subtype is characterized by reduced ADAMTS13 activity mediated via autoantibodies against this protease. Induction of autoantibodies mechanistically is incompletely understood, but certain drugs can induce anti-ADAMTS13 antibodies through hapten mechanisms. CASE REPORT A 56-year-old man was admitted from an external hospital because of a rapidly worsening general condition, hemolytic anemia (hemoglobin 4.17 mmol/l, hematocrit 0.19), and thrombocytopenia (22 Gpt/l) for unknown reasons. Additionally, he was found to have an elevated lactate dehydrogenase (45.37 μmol/l/s). 13 days before hospitalization he had received vaccination against H1N1. Laboratory tests revealed an increased total bilirubin (126 μmol/l), and a decreased haptoglobin level (< 0.08 g/l). The blood smear showed 24% fragmentocytes. Direct and indirect Coombs test were negative. TPP was diagnosed based on the clinical presentation and the detection of ADAMTS13 antibodies. Despite daily plasma exchange via plasmapheresis and administration of corticosteroids, there was no significant rise in platelet counts. Immunosuppression with a total of four weekly doses of rituximab (375 mg/m(2) body surface area) was added. Over the next 5 weeks, the platelet count very slowly rose. After a total of 46 sessions, plasmapheresis was ended with complete remission of the disease. CONCLUSION This report emphasizes the immunologic susceptibility of TTP, and suggests the potential, but not proven role of H1N1 vaccination in the pathogenesis of TTP, because no serum before vaccination was available. Severe autoantibody TTP can be successfully treated by administering rituximab in addition to standard treatment with plasmapheresis and corticosteroids.
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Affiliation(s)
- Regina Hermann
- Klinik für Innere Medizin III, Universitätsklinikum Jena, Jena, Germany.
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49
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Lombardi AM, Berti de Marinis G, Scandellari R, Magalini F, Sansoni P, Ballerini PF, Vettore S, Candeo N, Marson P, De Silvestro G, Fabris F. Clinical biological remission induced by rituximab in acute refractory chronic relapsing TTP. Thromb Res 2010; 126:e154-6. [DOI: 10.1016/j.thromres.2010.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 02/03/2010] [Accepted: 02/04/2010] [Indexed: 10/19/2022]
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50
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Caramazza D, Quintini G, Abbene I, Malato A, Saccullo G, Coco LL, Di Trapani R, Palazzolo R, Barone R, Mazzola G, Rizzo S, Ragonese P, Aridon P, Abbadessa V, Siragusa S. Relapsing or refractory idiopathic thrombotic thrombocytopenic purpura-hemolytic uremic syndrome: the role of rituximab. Transfusion 2010; 50:2753-60. [DOI: 10.1111/j.1537-2995.2010.02763.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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