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Provan D, Thachil J, Álvarez Román MT. Addressing thrombosis concerns in immune thrombocytopenia: the role of fostamatinib in immune thrombocytopenia management. Expert Rev Hematol 2024; 17:55-66. [PMID: 38369947 DOI: 10.1080/17474086.2024.2318345] [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: 06/06/2023] [Accepted: 02/09/2024] [Indexed: 02/20/2024]
Abstract
INTRODUCTION Immune thrombocytopenia (ITP), a disease that commonly presents with an increased risk of bleeding, can also paradoxically produce an increased risk of thromboembolic events. The risk of thromboembolism can be associated with patient-related factors (e.g. co-morbidities, age and history of thrombosis), disease-related factors (e.g. a greater proportion of younger, more reactive platelets, and the presence of microparticles and pro-inflammatory cytokines) and treatment-related factors (e.g. splenectomy, thrombopoietin receptor agonists, and IVIg). AREAS COVERED Aspects of the pathophysiology of ITP and the effects of treatment are discussed with emphasis on individualizing treatment based on the patient's thromboembolic risk, treatment options and preferences. EXPERT OPINION An increased understanding of the pathophysiology of ITP has led to the development of new agents such as fostamatinib, a spleen tyrosine kinase inhibitor. Further research into the factors contributing to the risks for bleeding and thromboembolic events can contribute to the development of more specific therapies for ITP and allow greater individualization of therapy based on each patient's medical history and clinical status.
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Affiliation(s)
- Drew Provan
- Department of Haematology, Emeritus Reader in Autoimmune Haematology, Barts & The London School of Medicine, London, UK
| | - Jecko Thachil
- Haemostasis and Thrombosis, Consultant in Haemostasis and Thrombosis, Manchester Royal Infirmary, Manchester, UK
| | - María Teresa Álvarez Román
- Head of the Haemostasis Unit, University Hospital La Paz, Autonomous University of Madrid, Madrid, Spain
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Zhou H, Han S, Jin J, Huang R, Guo X, Shen X, Wang B, Wang X, Yao H, Du X, Huang M, Ran X, Wang W, Yang T, Zhang F, Zheng C, Zuo X, Fu R, Gao D, Ge Z, Han Y, Li Y, Kang X, Shi Y, Hou M. Efficacy and safety of QL0911 in adult patients with chronic primary immune thrombocytopenia: A multicenter, randomized, double-blind, placebo-controlled, phase III trial. J Transl Int Med 2023; 11:423-432. [PMID: 38130645 PMCID: PMC10732573 DOI: 10.2478/jtim-2023-0106] [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] [Indexed: 12/23/2023] Open
Abstract
Objective QL0911, a recombinant human thrombopoietin mimetic peptide-Fc fusion protein, is a romiplostim (Nplate®) biosimilar used to treat primary immune thrombocytopenia (ITP). This phase III study aimed to assess the efficacy and safety of QL0911 in adult patients with chronic primary ITP over a 24-week treatment period. Methods We conducted a double-blind, placebo-controlled, phase III study in patients diagnosed with primary ITP for at least 12 months who had received at least one first-line ITP treatment with no response or recurrence after treatment, or who relapsed after splenectomy at 44 sites in China. Patients were randomly allocated (2:1 ratio) to QL0911 or placebo injection subcutaneously once weekly at an initial dose of 1 μg/kg for 24 weeks. The doses were adjusted to maintain the target platelet counts from 50 × 109/L to 200 × 109/L. Patients and investigators were blinded to the assignment. The primary endpoints were the proportion of patients who achieved a durable platelet response at week 24 (platelet count, ≥ 50 × 109/L during 6 of the last 8 weeks of treatment) and safety. The study was registered at ClinicalTrials.gov (NCT05621330). Results Between October 2019 and December 2021, 216 patients were randomly assigned (QL0911,144; placebo,72). A durable platelet response was achieved by significantly more patients in the QL0911 group (61.8%, 95% CI: 53.3-69.8; P < 0.0001) than in the placebo group (0%). The mean duration of platelet responses was 15.9 (SE: 0.43) weeks with QL0911, and 1.9 (SE:0.26) week with placebo. Consistent results were achieved in subgroup analyses categorized by baseline splenectomy status (yes/no), concomitant ITP treatment (yes/no), and baseline platelet count (≤ 10 × 109/L, > 10 × 109/L, ≤ 20 × 109/L, > 20 × 109/L, and < 30 × 109/L). The incidence of TEAEs was comparable between the QL0911 and the placebo groups (91.7% and 88.9%, respectively). The most common adverse events overall were ecchymosis (28.5% for QL0911 vs. 37.5% for placebo), upper respiratory tract infections respiratory tract infections (31.9% for QL0911 vs. 27.8% for placebo), and gingival bleeding (17.4% for QL0911 vs. 26.4% for placebo). Conclusion QL0911 was well-tolerated and increased and maintained platelet counts in adults with ITP. QL0911, a biosimilar to romiplostim (Nplate®), may be a novel treatment option for patients with ITP who have failed or relapsed from first-line treatment in China. Ongoing studies will provide further data on long-term efficacy and safety in such patient populations.
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Affiliation(s)
- Hu Zhou
- Department of Hematology, Henan Cancer Hospital, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou450008, Henan Province, China
| | - Shouqing Han
- Department of Hematology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan250012, Shandong Province, China
| | - Jie Jin
- Department of Hematology, The First Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, 310003, Zhejiang Province, China
| | - Ruibin Huang
- Department of Hematology, The First Affiliated Hospital of Nanchang University, Nanchang330006, Jiangxi Province, China
| | - Xinhong Guo
- Department of Hematology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi830054, Xinjiang Uygur Autonomous Region, China
| | - Xuliang Shen
- Department of Hematology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi046000, Shanxi Province, China
| | - Binghua Wang
- Department of Hematology, Weihai Central Hospital, Weihai264400, Shandong Province, China
| | - Xin Wang
- Department of Hematology, Suining Central Hospital, Suining629099, Sichuan Province, China
| | - Hongxia Yao
- Department of Hematology, Hainan General Hospital, Haikou570311, Hainan Province, China
| | - Xin Du
- Department of Hematology, Shenzhen Second People’s Hospital, Shenzhen518035, Guangdong Province, China
| | - Meijuan Huang
- Department of Hematology, Fujian Medical University Union Hospital, Fuzhou350001, Fujian Province, China
| | - Xuehong Ran
- Department of Hematology, Weifang People’s Hospital, Weifang261044, Shandong Province, China
| | - Wei Wang
- Department of Hematology, The Affiliated Hospital of Qingdao University, Qingdao266000Qingdao, Shandong Province, China
| | - Tonghua Yang
- Department of Hematology, The First People’s Hospital of Yunnan Province, Kunming650031, Yunnan Province, China
| | - Feng Zhang
- Department of Hematology, The First Affiliated Hospital of Bengbu Medical College, Bengbu233004, Anhui Province, China
| | - Changcheng Zheng
- Department of Hematology, Anhui Province Hospital, Hefei230002, Anhui Province, China
| | - Xuelan Zuo
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan430071, Hubei Province, China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin300052, China
| | - Da Gao
- Department of Hematology, The Affiliated Hospital of Inner Mongolia Medical University, Tongliao028000, Inner Mongolia, China
| | - Zheng Ge
- Department of Hematology, Zhongda Hospital Southeast University, Nanjing210009, Jiangsu Province, China
| | - Ying Han
- Department of Medicine, Qilu Pharmaceutical Co., Ltd, Jinan250100, Shandong Province, China
| | - Yujie Li
- Statistics and Statistical Programming, Qilu Pharmaceutical Co., Ltd, Jinan250100, Shandong Province, China
| | - Xiaoyan Kang
- Department of Medicine, Qilu Pharmaceutical Co., Ltd, Jinan250100, Shandong Province, China
| | - Yan Shi
- Department of Hematology, Qilu Hospital of Shandong University, Jinan250012, Shandong Province, China
| | - Ming Hou
- Department of Hematology, Qilu Hospital of Shandong University, Jinan250012, Shandong Province, China
- Department of Hematology, Shandong Provincial Key Laboratory of Immunohematology, Qilu Hospital of Shandong University, Jinan250012, Shandong Province, China
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Frol S, Pretnar Oblak J, Šabovič M, Kermer P, Sever M. Treatment of Acute Ischaemic Stroke and Concomitant Multiple Arterial Splanchnic Thromboses in a Patient with Immune Thrombocytopenia on Thrombopoietin Agonist: A Case Report. Neurol Int 2023; 15:1191-1199. [PMID: 37755365 PMCID: PMC10537946 DOI: 10.3390/neurolint15030074] [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: 08/18/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023] Open
Abstract
Immune thrombocytopenia (ITP) is an autoimmune blood disorder characterised by isolated severe thrombocytopenia. Arterial thrombotic events, such as acute ischaemic stroke (AIS), are rare complications. A 56-year-old woman with chronic ITP on eltrombopag and dexamethasone therapy presented to the emergency department due to AIS in the vertebrobasilar territory, and lower abdominal pain. The computed tomography (CT) scan of the head was unremarkable, whereas CT angiography revealed left vertebral artery occlusion. As the platelet count was sufficient, intravenous thrombolysis (IVT) was initiated. However, after 15 min, an anaphylactic reaction occurred, which was appropriately solved. Although the IVT was prematurely stopped, the NIHSS score improved from 7 to 2, and the follow-up head CT scan remained unremarkable. CT angiography of the thoracoabdominal aorta revealed multiple thrombi in the infrarenal aorta, inferior mesenteric artery (IMA), and left renal artery. The abdominal pain subsided after IVT, but recurred within 24 h. Repeated CT angiography showed ischaemia of the descending colon, with persistent IMA occlusion. After the hemicolectomy condition stabilised. Discrete left-sided ataxia and impaired sensation were the only neurological sequelae. We found two articles reporting only three patients with ITP who suffered AIS and were treated with IVT. A favourable outcome was observed in two cases, while one patient suffered an intracranial haemorrhage (ICH) and died. A review of AIS cases with undefined thrombocytopenia treated with IVT reported ICH in up to 6.8% of patients. Our case suggests that IVT for AIS may be effective in patients with ITP. Further data are needed to better clarify this issue.
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Affiliation(s)
- Senta Frol
- Department of Vascular Neurology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Janja Pretnar Oblak
- Department of Vascular Neurology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Mišo Šabovič
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
- Department of Vascular Disorders, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
| | - Pawel Kermer
- Department of Neurology, Nordwest-Krankenhaus Sanderbusch, Friesland Kliniken GmbH, 26452 Sande, Germany
- Department of Neurology, University of Göttingen, Robert-Koch Str. 40, 37075 Göttingen, Germany
| | - Matjaž Sever
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
- Department of Haematology, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
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González-López TJ, Provan D, Bárez A, Bernardo-Gutiérrez A, Bernat S, Martínez-Carballeira D, Jarque-Ramos I, Soto I, Jiménez-Bárcenas R, Fernández-Fuertes F. Primary and secondary immune thrombocytopenia (ITP): Time for a rethink. Blood Rev 2023; 61:101112. [PMID: 37414719 DOI: 10.1016/j.blre.2023.101112] [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: 03/23/2023] [Revised: 06/07/2023] [Accepted: 06/27/2023] [Indexed: 07/08/2023]
Abstract
There are not many publications that provide a holistic view of the management of primary and secondary ITP as a whole, reflecting the similarities and differences between the two. Given the lack of major clinical trials, we believe that comprehensive reviews are much needed to guide the diagnosis and treatment of ITP today. Therefore, our review addresses the contemporary diagnosis and treatment of ITP in adult patients. With respect to primary ITP we especially focus on establishing the management of ITP based on the different and successive lines of treatment. Life-threatening situations, "bridge therapy" to surgery or invasive procedures and refractory ITP are also comprehensively reviewed here. Secondary ITP is studied according to its pathogenesis by establishing three major differential groups: Immune Thrombocytopenia due to Central Defects, Immune Thrombocytopenia due to Blocked Differentiation and Immune Thrombocytopenia due to Defective Peripheral Immune Response. Here we provide an up-to-date snapshot of the current diagnosis and treatment of ITP, including a special interest in addressing rare causes of this disease in our daily clinical practice. The target population of this review is adult patients only and the target audience is medical professionals.
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Affiliation(s)
| | - Drew Provan
- Academic Haematology Unit, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Abelardo Bárez
- Department of Hematology. Complejo Asistencial de Ávila, Ávila, Spain
| | | | - Silvia Bernat
- Department of Hematology, Hospital Universitario de la Plana, Villarreal, Castellón, Spain
| | | | - Isidro Jarque-Ramos
- Department of Hematology, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | - Inmaculada Soto
- Department of Hematology, Hospital Central de Asturias, Oviedo, Asturias, Spain
| | | | - Fernando Fernández-Fuertes
- Department of Hematology, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain
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Zhou H, Zhou J, Wu D, Ma L, Du X, Niu T, Yang R, Liu J, Zhang F, Shi Q, Wang X, Jing H, Li J, Wang X, Cui Z, Zhou Z, Hou M, Shao Z, Jin J, Li W, Ren H, Hu J, Shen J, Liu L, Zeng Y, Zhou J, Liu X, Shen Y, Ding K, Taira T, Cai H, Zhao Y. Romiplostim in primary immune thrombocytopenia that is persistent or chronic: phase III multicenter, randomized, placebo-controlled clinical trial in China. Res Pract Thromb Haemost 2023; 7:100192. [PMID: 37601010 PMCID: PMC10439391 DOI: 10.1016/j.rpth.2023.100192] [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: 12/02/2022] [Revised: 04/02/2023] [Accepted: 04/15/2023] [Indexed: 08/22/2023] Open
Abstract
Background Multiple trials have confirmed that romiplostim could increase platelet count in individuals with primary immune thrombocytopenia (ITP), but no related study has assessed Chinese patients. Objectives To assess the effectiveness of romiplostim as a second-line treatment of persistent or chronic ITP in Chinese adults. Methods This phase III multicenter, randomized, placebo-controlled, double-blind, then open-label clinical trial (NCT02868099, CTR20150395) was conducted at 28 investigational sites in China. The patients were randomly assigned (3:1) to romiplostim (starting and maximum doses of 1 and 10 μg/kg, respectively) or placebo for 9 weeks (double-blind period), followed by the open-label period (both groups administered romiplostim) to week 22. The primary endpoint was the time (in weeks) during which platelet counts were ≥50 × 109/L in the double-blind period. Results In this study, 202 patients (romiplostim, n = 151; placebo, n = 51) started the treatment. The median (range) numbers of weeks with platelet response after 6 weeks of treatment were 2 (0-6) and 0 (0-2) in patients administered romiplostim and placebo, respectively (P < .001). During the double-blind period, the proportions of patients with treatment-emergent adverse events were comparable between the romiplostim and placebo groups (82.8% vs 82.4%). The treatment-emergent adverse event with ≥10% difference in incidence between these 2 groups was injection site bleeding (1.3% vs 11.8%). Conclusion Romiplostim significantly increased the time with maintained platelet response in patients with persistent or chronic ITP in comparison with placebo. No new safety signal was observed. Trial registration ClinicalTrials.gov, NCT02868099. www.chinadrugtrials.org.cn/clinicaltrials.searchlist.dhtml, CTR20150395.
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Affiliation(s)
- Hu Zhou
- Henan Cancer Hospital/The Affiliated Cancer Hospital of Zhengzhou University, Zhenzhou, China
| | - Jianfeng Zhou
- Tongji Hospital affiliated to Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Depei Wu
- The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Liping Ma
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xin Du
- Shenzhen Second People’s Hospital, Shenzhen, China
| | - Ting Niu
- West China Hospital, Sichuan University, Chengdu, China
| | - Renchi Yang
- Institute of Hematology & Blood Disease Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Jing Liu
- The Third Xiangya Hospital of Central South University, Changsha, China
| | - Feng Zhang
- The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Qingzhi Shi
- The Second affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiuli Wang
- The Second Hospital of Jilin University, Jilin, China
| | - Hongmei Jing
- Peking University Third Hospital, Beijing, China
| | - Junmin Li
- Rui Jin Hospital Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin Wang
- Shandong Provincial Hospital, Jinan, China
| | - Zhongguang Cui
- The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zeping Zhou
- Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ming Hou
- Qilu Hospital of Shandong University, Jinan, China
| | - Zonghong Shao
- Tianjin Medical University General Hospital, Tianjin, China
| | - Jie Jin
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenqian Li
- Qinghai Provincial People`s Hospital, Xining, China
| | - Hanyun Ren
- Peking University First Hospital, Beijing, China
| | - Jianda Hu
- Fujian Medical University Union Hospital, Fuzhou, China
| | | | - Li Liu
- Tangdu Hospital, Xi’an, China
| | - Yun Zeng
- First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Jin Zhou
- The First Affiliated Hospital of Haerbin Medical University, Haerbin, China
| | - Xin Liu
- Anhui Provincial Hospital, Hefei, China
| | | | - Kai Ding
- Kyowa Kirin China Pharmaceutical Co, Ltd, Beijing, China
| | | | - Huacong Cai
- Chinese Academy of Medical Sciences & Peking Union Medical College Hospital, Beijing, China
| | - Yongqiang Zhao
- Chinese Academy of Medical Sciences & Peking Union Medical College Hospital, Beijing, China
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Dong Y, Xia Z, Zhou J, Hu Y, Yue M, Wang Y, Hu M. Risk of thrombotic events in immune thrombocytopenia patients treated with thrombopoietic agents: a systematic review and meta-analysis. Thromb J 2023; 21:69. [PMID: 37353791 DOI: 10.1186/s12959-023-00509-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/01/2023] [Indexed: 06/25/2023] Open
Abstract
BACKGROUND Immune thrombocytopenia (ITP), which is a well-known hemorrhagic disorder characterized by low platelet counts, has been shown to be associated with the risk of thrombosis. Thrombopoietic agents (TAs) are extensively used as second-line treatments for ITP, effectively reducing the risk of hemorrhage. However, thrombosis, a potential adverse effect of TAs, raises clinical challenges. METHODS The MEDLINE(PubMed), Embase, and the Cochrane Library databases were systematically searched for relevant studies, including both single-arm trials and randomized controlled trials (RCTs), without language restrictions. RESULTS A total of 17 RCTs comprising 2,105 patients and 29 single-arm trials comprising 3,227 patients were included. In the single-arm meta-analysis, the pooled rate of overall thrombotic events in ITP patients receiving TAs was 2.2% (95% CI 1.0% - 3.7%). In RCTs, a higher incidence of thrombosis (33/1425 vs. 4/680) and higher risk ratios (RR) of overall, arterial, and venous thrombotic events (1.73, 95% CI [0.88, 3.39], P = 0.113; RR 1.98, 95% CI [0.80, 4.92], P = 0.141; RR 1.06, 95% CI [0.46, 2.41], P = 0.895, respectively) were observed in the TAs group than in the control group, although the differences were not significant. Subgroup analysis demonstrated that hetrombopag was the only TA with no increased thrombotic risk (rate 0.3% 95% CI [0.0 - 1.5%]; RR 0.76, 95% CI [0.03, 18.41], P = 0.864) compared to eltrombopag, avatrombopag, romiplostim, and rhTPO. Subgroup analyses also revealed that ITP patients with advanced age (3.7% vs. 1.3%, P = 0.132) or with a thrombotic history (3.0% vs. 1.4%, P = 0.257), and patients who received TAs therapy for a long duration (4.7% vs. 0.1%, P < 0.001) had an increased risk of thrombosis. CONCLUSION Our findings suggest ITP patients treated with TAs have a nonsignificantly higher risk of overall, arterial, and venous thrombotic events. Furthermore, hetrombopag is the recommended TA to avoid thrombophilia. Patients receiving long-term TAs, as well as elderly ITP patients or those with a history of thrombosis, face an increased thrombotic risk. In general, clinicians should consider potential thrombotic risks, address underlying risk factors, and ensure ongoing monitoring and follow-up when treating ITP patients with TAs.
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Affiliation(s)
- Yu Dong
- Department of the Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Urology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Zhinan Xia
- Department of Urology, The First Affiliated Hospital, Harbin Medical University, Harbin, China
| | - Jie Zhou
- Department of Basic Medicine College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yutao Hu
- Department of the First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ming Yue
- Department of Basic Medicine College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yuyong Wang
- Department of Urology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Mengjiao Hu
- Department of Basic Medicine College, Zhejiang Chinese Medical University, Hangzhou, China.
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Garra W, Carmi O, Kivity S, Levy Y. Catastrophic antiphospholipid syndrome in lupus-associated immune thrombocytopenia treated with eltrombopag A case series and literature review. Medicine (Baltimore) 2023; 102:e32949. [PMID: 36820549 PMCID: PMC9907943 DOI: 10.1097/md.0000000000032949] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Eltrombopag, a thrombopoietin receptor (TPO-R) agonist, is considered a second-line treatment for patients with refractory immune thrombocytopenia (ITP). Systemic lupus erythematosus (SLE) is frequently associated with ITP. In some cases, thrombocytopenia in SLE patients is attributed to concurrent antiphospholipid antibodies (APLA). Currently, data regarding treatment with TPO-R agonists for ITP in SLE or APLA patients are limited. The incidence of SLE flare or antiphospholipid syndrome while on TPO-R agonists has not been well-studied. CASES We report 2 cases of female patients with SLE and concurrent triple positive APLA, without thrombotic events in their medical history, in our rheumatology clinic, who were treated for refractory ITP with eltrombopag. Both developed catastrophic antiphospholipid syndrome a few weeks after beginning treatment with eltrombopag. They were admitted to the intensive care unit and treated with solumedrol, plasmapheresis, anticoagulation and rituximab. CONCLUSIONS We describe a severe possible side-effect of eltrombopag as a trigger of catastrophic antiphospholipid syndrome, a rare initial manifestation of antiphospholipid syndrome, in SLE patients with APLA. We suggest that APLA should be tested before initiating eltrombopag in patients with SLE-associated ITP. The safety of this treatment should be considered in these cases.
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Affiliation(s)
- Wakar Garra
- Department of Internal Medicine E, Meir Medical Center, Kfar Saba, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- * Correspondence: Wakar Garra, Department of Internal Medicine E, Meir Medical Center, 59 Tshernichovsky St., Kfar Saba 4428164 Israel (e-mail: )
| | - Or Carmi
- Department of Internal Medicine E, Meir Medical Center, Kfar Saba, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Rheumatology Unit, Meir Medical Center, Kfar Saba, Israel
| | - Shaye Kivity
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Rheumatology Unit, Meir Medical Center, Kfar Saba, Israel
| | - Yair Levy
- Department of Internal Medicine E, Meir Medical Center, Kfar Saba, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Rheumatology Unit, Meir Medical Center, Kfar Saba, Israel
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8
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Cooper N, Ghanima W, Hill QA, Nicolson PLR, Markovtsov V, Kessler C. Recent advances in understanding spleen tyrosine kinase (SYK) in human biology and disease, with a focus on fostamatinib. Platelets 2022; 34:2131751. [DOI: 10.1080/09537104.2022.2131751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nichola Cooper
- Clinical Reader in Immune Haematology and Honorary Consultant, Faculty of Medicine, Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Waleed Ghanima
- Head of Research and Consultant Haematologist, Department of Hemato-oncology, Østfold Hospital, and Department of Hematology, Institute of Clinical Medicine, Oslo University, Oslo, Norway
| | - Quentin A Hill
- Consultant Haematologist, Department of Haematology, Leeds Teaching Hospitals, Leeds, UK
| | - Phillip LR Nicolson
- Clinical Lecturer in Haematology, Institute of Cardiovascular Sciences, University of Birmingham, and Department of Haematology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Vadim Markovtsov
- Translational Biology, Rigel Pharmaceuticals, South San Francisco, CA, USA
| | - Craig Kessler
- Medicine and Pathology, Director, Division of Coagulation, Director, Cellular and Therapeutic Apheresis and Cellular Collection, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
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Tjepkema M, Amini S, Schipperus M. Risk of thrombosis with thrombopoietin receptor agonists for ITP patients: a systematic review and meta-analysis. Crit Rev Oncol Hematol 2022; 171:103581. [PMID: 35007700 DOI: 10.1016/j.critrevonc.2022.103581] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 12/09/2021] [Accepted: 01/05/2022] [Indexed: 11/25/2022] Open
Abstract
One possible side effect of thrombopoietin receptor agonists in immune thrombocytopenia is thrombosis. Our aim is to systematically review whether patients with ITP that were treated with a TPO-RA have an increased risk for thrombosis as compared to ITP patients without TPO-RA. Patients in the intervention group were required to receive TPO-RA therapy. The primary outcome was the incidence of thromboembolic events. Eleven studies were included in the pooled analysis. More thromboembolic events were noted in the TPO-RA group than in the control group: 25 compared to 4. Ten out of 11 studies showed a relative risk greater than 1. However, none of these individual risk ratios was statistically significant. The meta-analysis showed a RR of 1.82 [95% CI 0.78-4.24]. Our findings indicate there is a non-significant higher chance of thrombosis in ITP patients with TPO-RA treatments versus ITP patients without TPO-RA treatment.
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Affiliation(s)
- Mathilde Tjepkema
- University Medical Center Groningen, Department of Hematology, the Netherlands
| | - Sufia Amini
- Haga Teaching Hospital, Department of Hematology, the Netherlands.
| | - Martin Schipperus
- University Medical Center Groningen, Department of Hematology, the Netherlands
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10
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Abstract
INTRODUCTION Primary immune thrombocytopenia (ITP) is an autoimmune disorder characterized by a low platelet count (<100 × 109/L) with an increased risk of bleeding. Recent (2019) guidelines from the International Consensus Report (ICR) expert panel and the American Society of Hematology (ASH) provide updated recommendations for the diagnosis and management of ITP. AREAS COVERED The 2019 ICR and ASH guidelines are reviewed, and differences and similarities highlighted. Clinical approaches to the treatment of ITP are discussed, including the role of fostamatinib which is an approved treatment option in adult patients who are refractory to other treatments. EXPERT OPINION The 2019 ICR and ASH guidelines reflect recent changes in the management of ITP. Current treatment approaches for ITP are more rational and evidence-based than in the past. Patients should be treated based on their needs rather than on disease stage, and patient-specific outcomes, (e.g. quality of life) should be considered. Whilst corticosteroids are the mainstay of initial ITP treatment their use should be limited. For subsequent treatment, the use of thrombopoietin receptor agonist (TPO-RA) agents, fostamatinib and rituximab in adults is supported by robust evidence. Rituximab and recently approved fostamatinib offer viable alternatives to splenectomy.
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Affiliation(s)
- James Bussel
- Professor Emeritus, Weill Cornell Medicine, New York, USA
| | - Nichola Cooper
- Senior Lecturer and Honorary Consultant Haematologist, Imperial College, London, UK
| | - Ralph Boccia
- Clinical Associate Professor of Medicine, Georgetown University, Washington DC and Medical Director, Center for Cancer and Blood Disorders, Bethesda, USA
| | - Francesco Zaja
- Department of Medical, Surgical and Health Sciences, University of Trieste, Sc Ematologia, Azienda Sanitaria Universitaria Giuliano Isontina, Trieste, Italy
| | - Adrian Newland
- Professor of Haematology, Barts and the London School of Medicine and Dentistry, London, UK
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11
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Cooper N, Altomare I, Thomas MR, Nicolson PLR, Watson SP, Markovtsov V, Todd LK, Masuda E, Bussel JB. Assessment of thrombotic risk during long-term treatment of immune thrombocytopenia with fostamatinib. Ther Adv Hematol 2021; 12:20406207211010875. [PMID: 33995988 PMCID: PMC8111531 DOI: 10.1177/20406207211010875] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/30/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Patients with immune thrombocytopenia (ITP) are at risk of bleeding and, paradoxically, thromboembolic events (TEEs), irrespective of thrombocytopenia. The risk of thrombosis is increased by advanced age, obesity, and prothrombotic comorbidities: cancer, hyperlipidemia, diabetes, hypertension, coronary artery disease, and chronic kidney disease, among others. Certain ITP treatments further increase the risk of TEE, especially splenectomy and thrombopoietin receptor agonists. Spleen tyrosine kinase (SYK) is a key signaling molecule common to thromboembolic and hemostatic (in addition to inflammatory) pathways. Fostamatinib is an orally administered SYK inhibitor approved in the USA and Europe for treatment of chronic ITP in adults. Methods: The phase III and extension studies included heavily pretreated patients with long-standing ITP, many of whom had risk factors for thrombosis prior to initiating fostamatinib. This report describes long-term safety and efficacy of fostamatinib in 146 patients with up to 5 years of treatment, a total of 229 patient-years, and assesses the incidence of thromboembolic events (by standardized MedDRA query). Results: Platelet counts ⩾50,000/µL were achieved in 54% of patients and the safety profile was as described in the phase III clinical studies with no new toxicities observed over the 5 years of follow-up. The only TEE occurred in one patient (0.7%, or 0.44/100 patient-years), who experienced a mild transient ischemic attack. This is a much lower rate than might be expected in ITP patients. Conclusion: This report demonstrates durable efficacy and a very low incidence of TEE in patients receiving long-term treatment of ITP with the SYK inhibitor fostamatinib. ClinicalTrials.gov identifiers: NCT02076399, NCT02076412, and NCT02077192.
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Affiliation(s)
- Nichola Cooper
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, UK
| | - Ivy Altomare
- Duke University School of Medicine, Durham, NC, USA
| | - Mark R Thomas
- Institute of Cardiovascular Sciences, The Medical School, University of Birmingham, Edgbaston, Birmingham, UK
| | - Phillip L R Nicolson
- Institute of Cardiovascular Sciences, The Medical School, University of Birmingham, Edgbaston, Birmingham, UK
| | - Steve P Watson
- Institute of Cardiovascular Sciences, The Medical School, University of Birmingham, Edgbaston, Birmingham, UK
| | - Vadim Markovtsov
- Department of Research and Discovery, Rigel Pharmaceuticals Inc., South San Francisco, CA, USA
| | - Leslie K Todd
- Department of Research and Discovery, Rigel Pharmaceuticals Inc., South San Francisco, CA, USA
| | - Esteban Masuda
- Department of Research and Discovery, Rigel Pharmaceuticals Inc., South San Francisco, CA, USA
| | - James B Bussel
- Department of Pediatrics, Division of Hematology, Weill Medical College of Cornell University, 115 East 67th Street, New York, NY 10065, USA
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12
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Singh A, Uzun G, Bakchoul T. Primary Immune Thrombocytopenia: Novel Insights into Pathophysiology and Disease Management. J Clin Med 2021; 10:jcm10040789. [PMID: 33669423 PMCID: PMC7920457 DOI: 10.3390/jcm10040789] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 01/19/2023] Open
Abstract
Immune thrombocytopenia (ITP) is an autoimmune disorder defined by a significantly reduced number of platelets in blood circulation. Due to low levels of platelets, ITP is associated with frequent bruising and bleeding. Current evidence suggests that low platelet counts in ITP are the result of multiple factors, including impaired thrombopoiesis and variations in immune response leading to platelet destruction during pathological conditions. Patient outcomes as well as clinic presentation of the disease have largely been shown to be case-specific, hinting towards ITP rather being a group of clinical conditions sharing common symptoms. The most frequent characteristics include dysfunction in primary haemostasis and loss of immune tolerance towards platelet as well as megakaryocyte antigens. This heterogeneity in patient population and characteristics make it challenging for the clinicians to choose appropriate therapeutic regimen. Therefore, it is vital to understand the pathomechanisms behind the disease and to consider various factors including patient age, platelet count levels, co-morbidities and patient preferences before initiating therapy. This review summarizes recent developments in the pathophysiology of ITP and provides a comprehensive overview of current therapeutic strategies as well as potential future drugs for the management of ITP.
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Affiliation(s)
- Anurag Singh
- Institute for Clinical and Experimental Transfusion Medicine (IKET), University Hospital of Tuebingen, 72076 Tuebingen, Germany;
| | - Günalp Uzun
- Centre for Clinical Transfusion Medicine, University Hospital of Tuebingen, 72076 Tuebingen, Germany;
| | - Tamam Bakchoul
- Institute for Clinical and Experimental Transfusion Medicine (IKET), University Hospital of Tuebingen, 72076 Tuebingen, Germany;
- Centre for Clinical Transfusion Medicine, University Hospital of Tuebingen, 72076 Tuebingen, Germany;
- Correspondence: ; Tel.: +49-7071-29-81601
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13
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Cooper N, Kruse A, Kruse C, Watson S, Morgan M, Provan D, Ghanima W, Arnold DM, Tomiyama Y, Santoro C, Michel M, Laborde S, Lovrencic B, Hou M, Bailey T, Taylor‐Stokes G, Haenig J, Bussel JB. Immune thrombocytopenia (ITP) World Impact Survey (iWISh): Patient and physician perceptions of diagnosis, signs and symptoms, and treatment. Am J Hematol 2021; 96:188-198. [PMID: 33170956 PMCID: PMC7898610 DOI: 10.1002/ajh.26045] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 10/22/2020] [Indexed: 01/19/2023]
Abstract
Immune thrombocytopenia (ITP) is now well-known to reduce patients' health-related quality of life. However, data describing which signs and symptoms patients and physicians perceive as having the greatest impact are limited, as is understanding the full effects of ITP treatments. I-WISh (ITP World Impact Survey) was an exploratory, cross-sectional survey designed to establish the multifaceted impact of ITP, and its treatments, on patients' lives. It focused on perceptions of 1507 patients and 472 physicians from 13 countries regarding diagnostic pathway, frequency and severity of signs and symptoms, and treatment use. Twenty-two percent of patients experienced delayed diagnosis (caused by several factors), 73% of whom felt anxious as a result. Patients rated fatigue among the most frequent, severe symptom associated with ITP at diagnosis (58% most frequent; 73% most severe), although physicians assigned it lower priority (30%). Fatigue was one of the few symptoms persisting at survey completion (50% and 65%, respectively) and was the top symptom patients wanted resolved (46%). Participating physicians were experienced at treating ITP, thereby recognizing the need to limit corticosteroid use to newly-diagnosed or first-relapse patients and espoused increased use of thrombopoietin receptor agonists and anti-CD20 after relapse in patients with persistent/chronic disease. Patient and physicians were largely aligned on diagnosis, symptoms, and treatment use. I-WISh demonstrated that patients and physicians largely align on overall ITP symptom burden, with certain differences, for example, fatigue. Understanding the emotional and clinical toll of ITP on the patient will facilitate shared decision-management, setting and establishment of treatment goals and disease stage-appropriate treatment selection.
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Affiliation(s)
- Nichola Cooper
- Department of Haematology Hammersmith Hospital, Imperial College London London UK
| | | | - Caroline Kruse
- Platelet Disorder Support Association Cleveland Ohio USA
| | - Shirley Watson
- Patient Representative for the UK ITP Forum Bolnhurst UK
| | | | - Drew Provan
- Academic Haematology Unit, Blizard Institute Barts and The School of Medicine and Dentistry London UK
| | - Waleed Ghanima
- Department of Medicine Østfold Hospital Trust Kalnes Norway
- Department of Hematology Institute of Clinical Medicine, University of Oslo Oslo Norway
| | - Donald M. Arnold
- Department of Medicine, McMaster Centre for Transfusion Research McMaster University Hamilton Ontario Canada
| | - Yoshiaki Tomiyama
- Department of Blood Transfusion Osaka University Hospital Osaka Japan
| | | | - Marc Michel
- Department of Internal Medicine, National Referral Center for Adult Immune Cytopenias Henri Mondor University Hospital, Assistance Publique Hôpitaux de Paris, Université Paris‐Est Créteil Créteil France
| | | | - Barbara Lovrencic
- Italian Association of Immune Thrombocytopenic Purpura Caprino Veronese Italy
| | - Ming Hou
- Department of Hematology Shandong University Jinan China
| | - Tom Bailey
- Bespoke Team Adelphi Real World Macclesfield UK
| | | | | | - James B. Bussel
- Division of Hematology/Oncology Weill Cornell Medicine New York New York USA
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14
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Ansteatt KT, Unzicker CJ, Hurn ML, Olaiya OO, Nugent DJ, Tarantino MD. The Need for Comprehensive Care for Persons with Chronic Immune Thrombocytopenic Purpura. J Blood Med 2020; 11:457-463. [PMID: 33364868 PMCID: PMC7751596 DOI: 10.2147/jbm.s289390] [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: 11/10/2020] [Accepted: 12/04/2020] [Indexed: 11/23/2022] Open
Abstract
Chronic platelet disorders (CPD), including chronic immune thrombocytopenic purpura (cITP), thrombotic thrombocytopenic purpura (TTP) and platelet function disorders are among the most common bleeding disorders and are associated with morbidity and mortality. The clinical phenotype and complexity of cITP is much like that of hemophilia. In cITP and hemophilia, bleeding is problematic for many, complicating employability, insurability and overall quality-of-life (QoL). While myriad drug therapies are available for cITP and hemophilia, each are variable in their effectiveness, very few (except for clotting factor concentrates for hemophilia) alter the natural history of the disorder and sometimes contribute to specific morbidities and mortality. Like in hemophilia, the management of cITP is not solely based on access to effective treatment but also includes accurate diagnosis and comprehensive care by a multidisciplinary team of specialists trained in the management of bleeding disorders. The model of comprehensive care in Hemophilia Treatment Centers (HTCs) has been recognized as highly effective, improving life expectancy for persons with hemophilia. cITP, and other CPDs, are complex disorders requiring specialized care. However, an integrated care model with a systematic and reliable population-based surveillance program does not exist. Extending the Comprehensive Care model with all its related benefits to the community of persons with cITP is sorely needed. This review will focus on cITP as a prototype chronic platelet disorder that could benefit greatly from the Comprehensive Care model.
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Affiliation(s)
| | | | - Marsha L Hurn
- The Bleeding and Clotting Disorders Institute, Peoria, IL, USA
| | | | - Diane J Nugent
- The Center for Inherited Blood Disorders, Santa Ana, CA, USA
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15
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van Dijk WEM, Brandwijk ON, Heitink-Polle KMJ, Schutgens REG, van Galen KPM, Urbanus RT. Hemostatic changes by thrombopoietin-receptor agonists in immune thrombocytopenia patients. Blood Rev 2020; 47:100774. [PMID: 33213987 DOI: 10.1016/j.blre.2020.100774] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/02/2020] [Accepted: 11/04/2020] [Indexed: 01/08/2023]
Abstract
Thrombopoietin receptor agonist (TPO-RA) treatment increases the thrombosis rate in immune thrombocytopenia (ITP). We hypothesize that TPO-RAs influence platelet function, global and secondary hemostasis and/or fibrinolysis. A systematic review was performed. If possible, data were compared between responders (relevant increase in platelet count), and non-responders. Twelve observational studies with 305 patients were included (responders (127/150 (85%))). There were indications that TPO-RA treatment enhanced platelet function, with respect to platelet-monocyte aggregates, soluble P-selectin, GPVI expression, and adhesion under flow. Studies addressing global and secondary hemostasis and fibrinolysis were scarce. Overall, no changes were found during TPO-RA treatment, apart from an accelerated clot formation and conflicting data on levels of plasminogen activator inhibitor (PAI)-1. The parameters that increased have previously been associated with thrombosis in other patient groups, and might contribute to the increased rate of thrombosis observed in TPO-RA-treated ITP patients.
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Affiliation(s)
- Wobke E M van Dijk
- Department of Hematology, Van Creveldkliniek, University Medical Centre Utrecht, Postbox 85500, 3508 GA Utrecht, The Netherlands.
| | - Odila N Brandwijk
- Education Centre, University Medical Centre Utrecht, Utrecht University, Universiteitsweg 98, 3584 CG Utrecht, The Netherlands
| | - Katja M J Heitink-Polle
- Department of Hematology, Van Creveldkliniek, University Medical Centre Utrecht, Postbox 85500, 3508 GA Utrecht, The Netherlands
| | - Roger E G Schutgens
- Department of Hematology, Van Creveldkliniek, University Medical Centre Utrecht, Postbox 85500, 3508 GA Utrecht, The Netherlands.
| | - Karin P M van Galen
- Department of Hematology, Van Creveldkliniek, University Medical Centre Utrecht, Postbox 85500, 3508 GA Utrecht, The Netherlands.
| | - Rolf T Urbanus
- Department of Hematology, Van Creveldkliniek, University Medical Centre Utrecht, Postbox 85500, 3508 GA Utrecht, The Netherlands.
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16
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Provan D, Arnold DM, Bussel JB, Chong BH, Cooper N, Gernsheimer T, Ghanima W, Godeau B, González-López TJ, Grainger J, Hou M, Kruse C, McDonald V, Michel M, Newland AC, Pavord S, Rodeghiero F, Scully M, Tomiyama Y, Wong RS, Zaja F, Kuter DJ. Updated international consensus report on the investigation and management of primary immune thrombocytopenia. Blood Adv 2019; 3:3780-3817. [PMID: 31770441 PMCID: PMC6880896 DOI: 10.1182/bloodadvances.2019000812] [Citation(s) in RCA: 563] [Impact Index Per Article: 112.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 09/18/2019] [Indexed: 01/19/2023] Open
Abstract
Over the last decade, there have been numerous developments and changes in treatment practices for the management of patients with immune thrombocytopenia (ITP). This article is an update of the International Consensus Report published in 2010. A critical review was performed to identify all relevant articles published between 2009 and 2018. An expert panel screened, reviewed, and graded the studies and formulated the updated consensus recommendations based on the new data. The final document provides consensus recommendations on the diagnosis and management of ITP in adults, during pregnancy, and in children, as well as quality-of-life considerations.
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Affiliation(s)
- Drew Provan
- Academic Haematology Unit, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Donald M Arnold
- McMaster Centre for Transfusion Research, Department of Medicine and Department of Pathology and Molecular Medicine, McMaster University and Canadian Blood Services, Hamilton, ON, Canada
| | - James B Bussel
- Division of Hematology/Oncology, Department of Pediatrics, Weill Cornell Medicine, New York, NY
| | - Beng H Chong
- St. George Hospital, NSW Health Pathology, University of New South Wales, Sydney, NSW, Australia
| | - Nichola Cooper
- Department of Haematology, Hammersmith Hospital, London, United Kingdom
| | | | - Waleed Ghanima
- Departments of Research, Medicine and Oncology, Østfold Hospital Trust, Grålum, Norway
- Department of Hematology, Institute of Clinical Medicine, Oslo University, Oslo, Norway
| | - Bertrand Godeau
- Centre de Référence des Cytopénies Auto-Immunes de l'Adulte, Service de Médecine Interne, CHU Henri Mondor, AP-HP, Université Paris-Est Créteil, Créteil, France
| | | | - John Grainger
- Department of Haematology, Royal Manchester Children's Hospital, Manchester, United Kingdom
| | - Ming Hou
- Department of Haematology, Qilu Hospital, Shandong University, Jinan, China
| | | | - Vickie McDonald
- Royal London Hospital, Barts Health NHS Trust, London, United Kingdom
| | - Marc Michel
- Centre de Référence des Cytopénies Auto-Immunes de l'Adulte, Service de Médecine Interne, CHU Henri Mondor, AP-HP, Université Paris-Est Créteil, Créteil, France
| | - Adrian C Newland
- Academic Haematology Unit, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Sue Pavord
- Haematology Theme Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Francesco Rodeghiero
- Hematology Project Foundation, Affiliated to the Department of Cell Therapy and Hematology, San Bortolo Hospital, Vicenza, Italy
| | - Marie Scully
- Department of Haematology, University College London Hospital, Cardiometabolic Programme-NIHR UCLH/UCL BRC, London, United Kingdom
| | - Yoshiaki Tomiyama
- Department of Blood Transfusion, Osaka University Hospital, Osaka, Japan
| | - Raymond S Wong
- Sir YK Pao Centre for Cancer and Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
| | - Francesco Zaja
- SC Ematologia, Azienda Sanitaria Universitaria Integrata, Trieste, Italy; and
| | - David J Kuter
- Division of Hematology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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17
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Vourc'h M, Senage T, Lepoivre T, Volteau C, Fortuit C, Pattier S, Guimbretiere G, Roussel JC, Rozec B. Romiplostim as a transfusion saving strategy in 20 patients after heart or lung transplantation: a single centre before-after pilot study. Perfusion 2019; 35:121-130. [PMID: 31359829 DOI: 10.1177/0267659119864814] [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: 11/16/2022]
Abstract
BACKGROUND Thrombocytopenia is a common disorder after heart or lung transplantation. Platelet transfusion is often required to maintain haemostasis but represents a specific cause of morbidity and mortality in this setting including alloimmunisation and graft rejection. STUDY DESIGN AND METHODS As part of a health-care quality improvement project, in a single-centre before-after pilot study, the relevance of a platelet transfusion saving strategy based on romiplostim administration after transplantation was assessed in patients with platelet count <100 × 109/L. Transfusions on days 28 and 90 were compared using propensity matched score for adjustment of demographic characteristics at baseline. The primary outcome was platelet transfusion until day 28 after transplantation. RESULTS Ninety-three patients were analysed (73 before vs. 20 after). The median [interquartile range] number of platelet concentrate was 1 [0;4.0] before versus 0.5 [0;2.0] in the after period, mean difference 0.5 confidence interval 95% [-0.7 to 1.7], p = 0.39. On day 28, median [interquartile range] red blood cell transfusion was significantly higher in the before versus the after period, 7 [2.0;13.5] versus 6 [1.5;8.5], mean difference 3.2 CI 95% [0.4-6.0], p = 0.02. At 6 months, the rate of patients with de novo anti-human leukocyte antigen alloimmunisation was 45% before versus 53% in the after period (p = 0.56). Deep venous thrombosis was detected in nine patients (12%) before versus seven patients (35%) in the after period (p = 0.04). CONCLUSION Romiplostim did not significantly reduce platelet transfusion after heart or lung transplantation. Its relevance and safety in a global transfusion strategy remains to be studied in this setting in a large randomised study.
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Affiliation(s)
- Mickael Vourc'h
- Intensive Care Unit of Cardiothoracic Surgery, Anesthesia and Critical Care Department, Hôpital Nord Laennec, Nantes University Hospital, Nantes, France.,School of Medicine, UPRES EA 3826, Thérapeutiques Cliniques et Expérimentales des Infections, IRS2 Nantes Biotech, France
| | - Thomas Senage
- Department of Thoracic and Cardiovascular Surgery, Nantes University Hospital, Nantes, France
| | - Thierry Lepoivre
- Intensive Care Unit of Cardiothoracic Surgery, Anesthesia and Critical Care Department, Hôpital Nord Laennec, Nantes University Hospital, Nantes, France
| | - Christelle Volteau
- Biometry Platform, Research Promotion Department, Nantes University Hospital, Nantes, France
| | - Camille Fortuit
- Intensive Care Unit of Cardiothoracic Surgery, Anesthesia and Critical Care Department, Hôpital Nord Laennec, Nantes University Hospital, Nantes, France
| | - Sabine Pattier
- Department of Cardiology, Hôpital Nord Laennec, Nantes University Hospital, Nantes, France
| | - Guillaume Guimbretiere
- Department of Thoracic and Cardiovascular Surgery, Nantes University Hospital, Nantes, France
| | - Jean-Christian Roussel
- Department of Thoracic and Cardiovascular Surgery, Nantes University Hospital, Nantes, France
| | - Bertrand Rozec
- Intensive Care Unit of Cardiothoracic Surgery, Anesthesia and Critical Care Department, Hôpital Nord Laennec, Nantes University Hospital, Nantes, France
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18
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Arai Y, Matsui H, Jo T, Kondo T, Takaori-Kondo A. Comparison of treatments for persistent/chronic immune thrombocytopenia: a systematic review and network meta-analysis. Platelets 2018; 30:946-956. [PMID: 30507320 DOI: 10.1080/09537104.2018.1543864] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Recent studies have indicated that medical options without splenectomy, such as rituximab (RTX) or thrombopoietin receptor agonists (TPO-RAs), can be effective to treat persistent or chronic primary immune thrombocytopenia (ITP). However, it remains to be determined which of these strategies should be the first choice after the first-line treatment for newly diagnosed ITP. We performed a systematic review and network meta-analysis to establish a clinically meaningful hierarchy of the efficacy and safety of medical treatments for persistent or chronic ITP in adults. Randomized controlled trials (RCTs) evaluating medical treatments were included. Reviewers independently extracted data and assessed the risk of bias. The main outcome was the overall response (platelet≥ 50 × 109/L); incidence of bleeding episodes, necessity of rescue treatments, and therapy-related adverse events including thrombosis were the secondary endpoints. A total of 12 randomized controlled trials (N= 1306) were included in this study. Our main finding was an improved overall response in TPO-RA arms (both Eltrombopag and Romiplostim) compared with that of RTX or placebo. There were no significant differences between Eltrombopag and Romiplostim. Moreover, clinically significant bleeding episodes were decreased in TPO-RA arm compared with placebo. Therapy-related adverse events showed similar profiles, and were tolerable in all treatment arms. In conclusion, TPO-RAs can be first choices for the treatment of persistent and chronic ITP, rather than RTX, as alternatives to splenectomy. Future head-to-head trials including TPO-RAs vs. RTX or Eltrombopag vs. Romiplostim are necessary to validate our study findings and determine the most suitable therapy for persistent/chronic ITP.
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Affiliation(s)
- Yasuyuki Arai
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University , Kyoto , Japan.,Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda , MD , USA
| | - Hiroyuki Matsui
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Tomoyasu Jo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Tadakazu Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Akifumi Takaori-Kondo
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
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19
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Machin N, Ragni MV, Comer DM, Yabes JG. Prevalence and correlates of thrombosis in adults with immune thrombocytopenia: An NIS study. Thromb Res 2018; 172:80-85. [DOI: 10.1016/j.thromres.2018.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/10/2018] [Accepted: 10/22/2018] [Indexed: 10/28/2022]
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20
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DasGupta RK, Levine L, Wiczer T, Cataland S. Initial romiplostim dosing and time to platelet response in patients with treatment refractory immune thrombocytopenia. J Oncol Pharm Pract 2018; 25:567-576. [DOI: 10.1177/1078155217748470] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background/rationale Romiplostim is a thrombopoietin receptor agonist recommended as a second-line therapy for immune thrombocytopenia. An initial dose of 1 mcg/kg/week subcutaneously with weekly 1 mcg/kg dose escalation is recommended per package labeling. Optimizing romiplostim dosing for hospitalized, corticosteroid- and intravenous immunoglobulin-refractory patients with severe thrombocytopenia secondary to immune thrombocytopenia may be critical for improving platelet responses, reducing the risk of bleeding, and decreasing hospital length of stay. Limited data are available evaluating the efficacy and safety of higher initial doses. Objective The primary objective of this study was to compare the time to platelet ≥ 10 × 109/L between patients who received an initial romiplostim dose of ≥2 mcg/kg/week compared to the standard initial dose of 1 mcg/kg/week. Secondary objectives included time to platelet response ≥ 30 × 109/L and ≥50 × 109/L, percentage of patients achieving platelet responses, hospital length of stay, and incidence of adverse events and bleeding complications. Methods This was a retrospective, single-center, cohort study including hospitalized adults with corticosteroid- and intravenous immunoglobulin-refractory immune thrombocytopenia. A baseline platelet < 10 × 109/L was required. Patients were stratified by their initial romiplostim dose into Cohort 1 (1 mcg/kg/week) and Cohort 2 (≥2 mcg/kg/week). A review of electronic medical records and descriptive statistics generated findings. Results A total of 18 patients were included, 4 in Cohort 1 and 14 in Cohort 2. Patients in Cohort 2 had a median initial dose of 4.5 mcg/kg/week. Patients in Cohort 2 achieved a platelet ≥ 10 × 109/L in a median of 2 days versus 4.5 days for Cohort 1. More patients in Cohort 2 achieved a platelet ≥ 30 × 109/L (42.9% vs. 25%) and platelet ≥ 50 × 109/L (28.6% vs. 25%). The median hospital length of stay was shorter in Cohort 2 (13.5 vs. 20 days). Clinically relevant nonmajor bleeding was noted less frequently in Cohort 2 (28.6% vs. 75%), while major bleeding was more frequent in Cohort 2 (14.3% vs. 0%). No thrombotic events occurred. Conclusion Our study suggests that higher initial romiplostim doses may be safe for hospitalized patients with treatment-refractory immune thrombocytopenia. Compared to Food and Drug Administration-approved dosing, higher initial doses may shorten time to platelet responses and hospital length of stay. Further large-scale studies are needed to confirm these findings.
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Affiliation(s)
- Ryan K DasGupta
- Department of Pharmacy, The Ohio State University James Cancer Hospital, Columbus, OH, USA
| | - Lauren Levine
- Department of Pharmaceutical Services, Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Tracy Wiczer
- Department of Pharmacy, The Ohio State University James Cancer Hospital, Columbus, OH, USA
| | - Spero Cataland
- The Ohio State University James Cancer Hospital, Columbus, OH, USA Division of Hematology & Oncology
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21
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Garabet L, Ghanima W, Monceyron Jonassen C, Skov V, Holst R, Mowinckel MC, C Hasselbalch H, A Kruse T, Thomassen M, Liebman H, Bussel JB, Sandset PM. Effect of thrombopoietin receptor agonists on markers of coagulation and P-selectin in patients with immune thrombocytopenia. Platelets 2017; 30:206-212. [PMID: 29215956 DOI: 10.1080/09537104.2017.1394451] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Thrombopoietin-receptor-agonists (TPO-RA) are effective treatments of immune thrombocytopenia (ITP). Previous long-term TPO-RA clinical trials have shown that thrombotic events occurred in 6% of TPO-RA-treated ITP patients. To explore the increased risk of thrombosis, the effects of TPO-RA on markers of coagulation and P-selectin were studied. The study comprised two ITP cohorts and controls. Cohort 1 included 26 patients with sequential samples acquired before and during treatment with TPO-RA. Cohort 2 included a single sample in 18 patients on TPO-RA for more than one year. Thrombin generation (endogenous thrombin potential (ETP)) prothrombin fragments 1 + 2 (F1+2), D-dimer, and plasminogen-activator-inhibitor-1 (PAI-1) were measured as well as soluble P-selectin (sP-selectin). Sequential expression of encoding genes for P-selectin (SELP) and PAI-1 (SERPINE1) was determined in four patients in cohort 1. Significantly higher levels of F1+2, D-dimer, and PAI-1 were found in ITP patients before TPO-RA treatment and in patients on long-term TPO-RA treatment than in controls. Pre-treatment levels of sP-selectin did not differ from controls. Analysis of longitudinal trends showed an increase in platelet count, sP-selectin, and PAI-1 after initiation of TPO-RA, followed by gradual decline. Platelet count and sP-selectin remained at higher levels throughout the study, whereas PAI-1 did not. Levels of other studied parameters did not show significant changes after initiation of treatment. Expression of SELP was up-regulated after initiation of TPO-RA, while the expression of SERPINE1 showed no significant changes. In conclusion, elevated pre-treatment levels of F1+2, D-dimer and PAI-1 are compatible with ITP being an intrinsically pro-thrombotic condition. After TPO-RA treatment, there were no significant changes in markers of coagulation activation or fibrinolysis, except for an initial increase in PAI-1 and a significant increase in sP-selectin both of which may contribute to increased thrombotic risk associated with TPO-RA treatment in ITP.
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Affiliation(s)
- Lamya Garabet
- a Center for Laboratory Medicine , Østfold Hospital Trust , Kalnes , Oslo , Norway.,b Institute of Clinical Medicine , University of Oslo , Norway
| | - Waleed Ghanima
- b Institute of Clinical Medicine , University of Oslo , Norway.,c Department of Research , Østfold Hospital Trust , Kalnes , Norway.,d Department of Medicine , Østfold Hospital Trust , Kalnes , Norway
| | | | - Vibe Skov
- e Department of Hematology , Zealand University Hospital , Roskilde , Denmark
| | - René Holst
- c Department of Research , Østfold Hospital Trust , Kalnes , Norway.,f Oslo Centre for Biostatistics and Epidemiology , University of Oslo and Oslo University Hospital , Oslo , Norway
| | - Marie-Christine Mowinckel
- g Department of Haematology , Oslo University Hospital , Oslo , Norway.,h Research Institute of Internal Medicine , Oslo University Hospital , Oslo , Norway
| | - Hans C Hasselbalch
- i Department of Hematology , Copenhagen University Hospital , Roskilde , Denmark
| | - Torben A Kruse
- j Department of Clinical Genetics , Odense University Hospital , Odense , Denmark
| | - Mads Thomassen
- j Department of Clinical Genetics , Odense University Hospital , Odense , Denmark
| | - Howard Liebman
- k Department of Medicine , University of California-Keck School of Medicine , Los Angeles , CA , USA
| | - James B Bussel
- l Department of Pediatrics, Division of Hematology , New York Presbyterian Hospital, Weill Cornell Medicine , New York , USA
| | - Per Morten Sandset
- b Institute of Clinical Medicine , University of Oslo , Norway.,g Department of Haematology , Oslo University Hospital , Oslo , Norway.,h Research Institute of Internal Medicine , Oslo University Hospital , Oslo , Norway
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22
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A novel recombinant human thrombopoietin therapy for the management of immune thrombocytopenia in pregnancy. Blood 2017. [PMID: 28630121 DOI: 10.1182/blood-2017-01-761262] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The aim of this study was to determine the safety and efficacy of recombinant human thrombopoietin (rhTPO) for the management of immune thrombocytopenia (ITP) during pregnancy. Pregnant patients with ITP were enrolled in the study if they had a platelet count less than 30 × 109/L, were experiencing bleeding manifestations, had failed to respond to corticosteroids and/or intravenous immunoglobulin (IVIG), and had developed refractoriness to platelet transfusion. Thirty-one patients received rhTPO at an initial dose of 300 U/kg once daily for 14 days. Twenty-three patients responded (74.2%), including 10 complete responders (>100 × 109/L) and 13 responders (30-100 × 109/L). It appears that rhTPO ameliorated the bleeding symptoms remarkably, even in the nonresponders. rhTPO was well tolerated. Dizziness, fatigue, and pain at an injection site were reported in 1 patient each. No congenital disease or developmental delays were observed in the infants in a median follow-up of 53 (range, 39-68) weeks. In conclusion, rhTPO is a potentially safe and effective treatment choice for patients with ITP during pregnancy. Our work has paved the way for further study on the clinical application of rhTPO and other thrombopoietic agents for the management of ITP during pregnancy. This study is registered at www.clinicaltrials.gov as NCT02391272.
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Sustained Remission in Patients with Primary Immune Thrombocytopenia after Romiplostim Tapering and Discontinuation: A Case Series in Real Life Management in Spain. Case Rep Hematol 2017; 2017:4109605. [PMID: 28695025 PMCID: PMC5485313 DOI: 10.1155/2017/4109605] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 05/16/2017] [Indexed: 01/09/2023] Open
Abstract
Romiplostim, a thrombopoietin-receptor agonist (TPO-ra), is a highly effective option in primary immune thrombocytopenia (ITP), with 80–90% of patients achieving platelet responses after few weeks of treatment. The evidence showing remissions, that is, sustained platelet counts after romiplostim discontinuation, in patients with ITP refractory to immunosuppressive therapy is steadily increasing. However, there is a lack of guidelines or recommendations addressing how and when to taper romiplostim in clinical practice in patients maintaining elevated and stable platelet counts. Furthermore, given the high heterogeneity of ITP patients, no associated predictive factors have been currently identified. Here, we present 4 representative clinical cases of the daily clinical practice in Spain comprising newly diagnosed, persistent, and both splenectomized and nonsplenectomized chronic ITP patients treated with romiplostim, achieving and maintaining clinical remission (platelet count ≥ 50 × 109/L for 24 consecutive weeks in the absence of any treatment for ITP) after treatment tapering and discontinuation, without observed safety concerns. Prospective studies identifying clinical and biological predictive factors of sustained response are warranted.
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24
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Wang L, Gao Z, Chen XP, Zhang HY, Yang N, Wang FY, Guan LX, Gu ZY, Zhao SS, Luo L, Wei HP, Gao CJ. Efficacy and safety of thrombopoietin receptor agonists in patients with primary immune thrombocytopenia: A systematic review and meta-analysis. Sci Rep 2016; 6:39003. [PMID: 27991534 PMCID: PMC5171907 DOI: 10.1038/srep39003] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 11/16/2016] [Indexed: 12/25/2022] Open
Abstract
Immune thrombocytopenia (ITP) is an autoimmune disease characterized by increased platelet destruction and impaired platelet production. In this study, we conducted a systematic review and meta-analysis to determine the efficacy and safety of thrombopoietin receptor agonists (TPO-RAs) in primary ITP patients. Thirteen randomized controlled trials were included in this study, the pooled results of which demonstrated that TPO-RAs significantly increased platelet response (R) and durable response (DR) rates [risk ratio (RR): 2.77, 95% confidence interval (CI): 2.01-3.82, P = 5.9 × 10-10; RR: 7.52, 95% CI: 3.94-14.35, P = 9.2 × 10-10; respectively] and that TPO-RAs significantly reduced the incidences of any or severe bleeding events (RR: 0.80, 95% CI: 0.67-0.95, P = 0.013; RR: 0.52, 95% CI: 0.27-0.99, P = 0.048; respectively). Moreover, our results indicated that there was a significant reduction in the proportion of patients needing rescue medications in the TPO-RA groups compared with the control groups (RR: 0.50, 95% CI: 0.42-0.59, P = 2.0 × 10-15) and that the rates of any or severe adverse events were similar between the TPO-RA and control regimens (RR: 1.01, 95% CI: 0.92-1.10; RR: 0.74, 95% CI: 0.54-1.01; respectively). These findings demonstrate that TPO-RAs are an effective and safe second-line treatment option for primary ITP patients.
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Affiliation(s)
- Li Wang
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Department of Hematology, Laoshan Branch, No. 401 Hospital of Chinese PLA, Qingdao, China
| | - Zhe Gao
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
- Department of Hematology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiao-ping Chen
- Department of Hematology, Navy General Hospital of Chinese PLA, Beijing, China
| | - Hai-yan Zhang
- Department of Hematology, Linyi People’s Hospital, Linyi, China
| | - Nan Yang
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Fei-yan Wang
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Li-xun Guan
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Zhen-yang Gu
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Sha-sha Zhao
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Lan Luo
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Hua-ping Wei
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
| | - Chun-ji Gao
- Department of Hematology, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, China
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Yang R, Li J, Jin J, Huang M, Yu Z, Xu X, Zhang X, Hou M. Multicentre, randomised phase III study of the efficacy and safety of eltrombopag in Chinese patients with chronic immune thrombocytopenia. Br J Haematol 2016; 176:101-110. [PMID: 27734464 DOI: 10.1111/bjh.14380] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/11/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Renchi Yang
- Institute of Haematology and Blood Diseases Hospital; Chinese Academy of Medical Sciences; Tianjin China
| | - Junmin Li
- Department of Haematology; Ruijin Hospital affiliated to Shanghai Jiao Tong University; Shanghai China
| | - Jie Jin
- Institute of Haematology; The First Affiliated Hospital; Zhejiang University College of Medicine; Hangzhou China
| | - Meijuan Huang
- Fujian Institute of Haematology; Fujian Medical University Union Hospital; Fuzhou China
| | - Ziqiang Yu
- Department of Haematology; The First Affiliated Hospital of Soochow University; Suzhou China
| | - Xiaojun Xu
- Department of Haematology; Zhongshan People's Hospital; Zhongshan China
| | - Xiaohui Zhang
- Department of Haematology; Peking University People's Hospital; Beijing China
| | - Ming Hou
- Department of Haematology; Qilu Hospital; Shandong University; Ji'nan China
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26
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Nguyen TTL, Palmaro A, Montastruc F, Lapeyre-Mestre M, Moulis G. Signal for Thrombosis with Eltrombopag and Romiplostim: A Disproportionality Analysis of Spontaneous Reports Within VigiBase®. Drug Saf 2016; 38:1179-86. [PMID: 26338346 DOI: 10.1007/s40264-015-0337-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Eltrombopag and romiplostim are thrombopoietin receptor agonists (TPO-RAs) marketed for immune thrombocytopenia (ITP). Thrombotic events have been reported with both drugs. This study was aimed at assessing whether there is a signal for differential risks of thrombosis between these two TPO-RAs. METHODS We carried out a disproportionality analysis in the World Health Organization global individual case safety report (ICSR) database (VigiBase(®)). We selected all ICSRs with exposure to a TPO-RA between January 2011 and December 2014. We searched for exposures to eltrombopag or romiplostim in thrombosis reports as compared with other ICSRs, and we calculated adjusted reporting odds ratios (aRORs). RESULTS We identified 5850 ICSRs, including 764 cases of thrombosis. In multivariate analyses, there was a signal for an increased risk of thrombosis (venous or arterial; aROR 1.72, 95 % confidence interval [CI] 1.47-2.02), venous thrombosis (aROR 1.88, 95 % CI 1.53-2.31), arterial thrombosis (aROR 1.54, 95 % CI 1.18-2.00), ischaemic stroke (aROR 1.65, 95 % CI 1.13-2.42) and myocardial infarction (aROR 1.50, 95 % CI 1.05-2.13) with eltrombopag as compared with romiplostim. Restriction to ICSRs reported by physicians led to similar results. However, worldwide dispensing data for romiplostim and eltrombopag were not accessible, so the rates of thrombosis with both drugs were not normalized by the daily defined doses and the generalizability of the results is limited. CONCLUSION This study suggests the presence of a signal for an increased risk of thrombosis with eltrombopag compared with romiplostim. These results must be confirmed and quantified by large aetiological pharmacoepidemiological studies.
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Affiliation(s)
- Thi-Thanh Loan Nguyen
- INSERM, UMR 1027, Toulouse, France.,Université de Toulouse III, UMR 1027, Toulouse, France
| | - Aurore Palmaro
- INSERM, UMR 1027, Toulouse, France.,Université de Toulouse III, UMR 1027, Toulouse, France
| | - François Montastruc
- INSERM, UMR 1027, Toulouse, France.,Université de Toulouse III, UMR 1027, Toulouse, France.,Service de Pharmacologie Médicale et Clinique, Faculté de Médecine, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.,Centre Midi-Pyrénées de PharmacoVigilance, de Pharmacoépidémiologie et d'Informations sur le Médicament, Centre Hospitalier Universitaire de Toulouse, Pharmacopole Midi-Pyrénées, Toulouse, France
| | - Maryse Lapeyre-Mestre
- INSERM, UMR 1027, Toulouse, France.,Université de Toulouse III, UMR 1027, Toulouse, France.,Service de Pharmacologie Médicale et Clinique, Faculté de Médecine, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Guillaume Moulis
- INSERM, UMR 1027, Toulouse, France. .,Université de Toulouse III, UMR 1027, Toulouse, France. .,Service de Médecine Interne, Centre Hospitalier Universitaire de Toulouse, Toulouse, France.
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Affiliation(s)
- Shruti Chaturvedi
- Division of Hematology and Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith R McCrae
- Department of Hematology and Oncology and Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA.
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28
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Cines DB, Gernsheimer T, Wasser J, Godeau B, Provan D, Lyons R, Altomare I, Wang X, Lopez A. Integrated analysis of long-term safety in patients with chronic immune thrombocytopaenia (ITP) treated with the thrombopoietin (TPO) receptor agonist romiplostim. Int J Hematol 2015. [PMID: 26201709 DOI: 10.1007/s12185-015-1837-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A safety analysis of pooled data from clinical studies of romiplostim, a thrombopoietin (TPO) receptor agonist, in which patients with immune thrombocytopaenia (ITP) received romiplostim, placebo, or medical standard of care (SOC) Rodeghiero et al. (Eur J Haematol 91:423-436, 2013), has been updated. Included are data from 14 trials spanning 2002-2011; placebo- and SOC-arm data are pooled. Most patients (n = 1059) were female (61 %) and Caucasian (85 %); 38 % had undergone splenectomy; 23 were children. Mean (SD) baseline platelet count was 20.6 (16.5) × 10(9)/L. Mean (SD) weekly dose of romiplostim was 4.2 (2.8) µg/kg; total exposure was 1520 patient-years. Overall, 921 patients received romiplostim only, 65 received placebo/SOC only, and 73 received placebo/SOC followed by romiplostim. Rates of haemorrhage (romiplostim, 205/100 patient-years; placebo/SOC, 263/100), thrombosis (both, 5.5/100 patient-years), haematological malignancy/myelodysplastic syndrome (romiplostim, 0.5/100 patient-years; placebo/SOC, 2.7/100), and non-haematological tumours (romiplostim, 2.2/100 patient-years; placebo/SOC, 3.6/100) were comparable among groups. Bone marrow reticulin was reported in 17 patients and collagen in one patient receiving romiplostim; one patient receiving placebo/SOC had reticulin reported. Three patients developed neutralizing antibodies to romiplostim, but not to endogenous TPO. This integrated analysis of the safety profile of romiplostim in patients with ITP is consistent with previously reported studies; no new safety concerns emerged.
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Affiliation(s)
- Douglas B Cines
- Departments of Pathology and Laboratory Medicine, Perelman-University of Pennsylvania School of Medicine, 513 A Stellar Chance, 422 Curie Blvd, Philadelphia, PA, 19104, USA,
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29
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Catalá-López F, Corrales I, de la Fuente-Honrubia C, González-Bermejo D, Martín-Serrano G, Montero D, Saint-Gerons DM. Risk of thromboembolism with thrombopoietin receptor agonists in adult patients with thrombocytopenia: Systematic review and meta-analysis of randomized controlled trials. Med Clin (Barc) 2015; 145:511-9. [PMID: 26051432 DOI: 10.1016/j.medcli.2015.03.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/10/2015] [Accepted: 03/12/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Romiplostim and eltrombopag are thrombopoietin receptor (TPOr) agonists that promote megakaryocyte differentiation, proliferation and platelet production. In 2012, a systematic review and meta-analysis reported a non-statistically significant increased risk of thromboembolic events for these drugs, but analyses were limited by lack of statistical power. Our objective was to update the 2012 meta-analysis examining whether TPOr agonists affect thromboembolism occurrence in adult thrombocytopenic patients. MATERIALS AND METHODS We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs). Updated searches were conduced on PubMed, Cochrane Central, and publicly available registries (up to December 2014). RCTs using romiplostim or eltrombopag in at least one group were included. Relative risks (RR), absolute risk ratios (ARR) and number needed to harm (NNH) were estimated. Heterogeneity was analyzed using Cochran's Q test and I(2) statistic. RESULTS Fifteen studies with 3026 adult thrombocytopenic patients were included. Estimated frequency of thromboembolism was 3.69% (95% CI: 2.95-4.61%) for TPOr agonists and 1.46% (95% CI: 0.89-2.40%) for controls. TPOr agonists were associated with a RR of thromboembolism of 1.81 (95% CI: 1.04-3.14) and an ARR of 2.10% (95% CI: 0.03-3.90%) meaning a NNH of 48. Overall, we did not find evidence of statistical heterogeneity (p=0.43; I(2)=1.60%). CONCLUSIONS Our updated meta-analysis suggested that TPOr agonists are associated with a higher risk of thromboemboembolic events compared with controls, and supports the current recommendations included in the European product information on this respect.
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Affiliation(s)
- Ferrán Catalá-López
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain; Fundación Instituto de Investigación en Servicios de Salud, Valencia, Spain.
| | - Inmaculada Corrales
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
| | - César de la Fuente-Honrubia
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
| | - Diana González-Bermejo
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
| | - Gloria Martín-Serrano
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
| | - Dolores Montero
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
| | - Diego Macías Saint-Gerons
- Division of Pharmacoepidemiology and Pharmacovigilance, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, Spain
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Magnano L, Enríquez H, Esteve J, Cervera R, Espinosa G. Effectiveness of thrombopoietin-receptor agonists in the treatment of refractory immune thrombocytopenia associated to systemic lupus erythematosus. J Rheumatol 2015; 41:1895-6. [PMID: 25179983 DOI: 10.3899/jrheum.140080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | - Ricard Cervera
- Department of Autoimmune Diseases, Hospital Clinic, Barcelona, Catalonia, Spain
| | - Gerard Espinosa
- Department of Autoimmune Diseases, Hospital Clinic, Barcelona, Catalonia, Spain.
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Bussel JB, Hsieh L, Buchanan GR, Stine K, Kalpatthi R, Gnarra DJ, Ho RH, Nie K, Eisen M. Long-term use of the thrombopoietin-mimetic romiplostim in children with severe chronic immune thrombocytopenia (ITP). Pediatr Blood Cancer 2015; 62:208-213. [PMID: 25345874 PMCID: PMC4309514 DOI: 10.1002/pbc.25136] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 05/14/2014] [Indexed: 01/19/2023]
Abstract
BACKGROUND Treatment of chronic severe pediatric ITP is not well studied. In a phase 1/2 12-16-week study, 15/17 romiplostim-treated patients achieved platelet counts ≥50 × 109 /L, and romiplostim treatment was well tolerated. In a subsequent open-label extension (≤109 weeks), 20/22 patients received romiplostim; all achieved platelet counts >50 × 109 /L. Twelve patients continued in a second extension (≤127 weeks). Longitudinal data from start of romiplostim treatment through the two extensions were evaluated to investigate the safety and efficacy of long-term romiplostim treatment in chronic severe pediatric ITP. PROCEDURE Patients received weekly subcutaneous romiplostim, adjusted by 1 µg/kg/week to maintain platelet counts (50-200 × 109 /L, maximum dose 10 µg/kg). Bone marrow examinations were not required. RESULTS At baseline, patients were median age 10.0 years; median ITP duration 2.4 years; median platelet count 13 × 109 /L; 73% were male; and 36% had prior splenectomy. Median romiplostim treatment duration was 167 weeks (Q1, Q3: 78,227 weeks), and median average weekly dose was 5.4 µg/kg (Q1, Q3: 4.3, 8.0 µg/kg). Seven patients discontinued treatment: four withdrew consent, two were noncompliant, and one received alternative therapy. None withdrew because of adverse events (AEs). After the first 12 weeks, median platelet counts remained >50 × 109 /L. Eight (36.4%) patients received rescue medication, and 14 (63.6%) used concurrent ITP therapy. Seven patients (31.8%) reported serious AEs, and two (9.1%) reported life-threatening AEs (both thrombocytopenia); there were no serious AEs attributed to treatment and no fatalities. CONCLUSIONS Long-term romiplostim treatment in this small cohort increased and maintained platelet counts for over 4 years in children with ITP with good tolerability and without significant toxicity. Pediatr Blood Cancer 2015;62:208-213. © 2014. The Authors. Pediatr Blood & Cancer published by Wiley Periodicals, Inc.
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Affiliation(s)
- James B Bussel
- Department of Pediatrics, Division of Hematology, Weill Medical College of Cornell UniversityNew York, New York,*Correspondence to: James B. Bussel, Weill Medical College of Cornell University, 525 East 68th Street, Payson Pavilion–695, New York, NY 10065., E-mail:
| | - Loan Hsieh
- Children's Hospital of Orange County/University of CaliforniaIrvine, California
| | - George R Buchanan
- Department of Pediatrics, University of Texas Southwestern Medical CenterDallas, Texas
| | - Kimo Stine
- Arkansas Children's HospitalLittle Rock, Arkansas
| | | | - David J Gnarra
- Children's Hospital and Medical Center, University of Nebraska Medical CenterOmaha, Nebraska
| | - Richard H Ho
- Department of Pediatrics, Monroe Carell Jr. Children's Hospital at VanderbiltNashville, Tennessee
| | - Kun Nie
- Amgen Inc.Thousand Oaks, California
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Abstract
“Immune thrombocytopenia” (ITP) is an autoimmune disorder that leads to peripheral destruction, as well as a decreased production of platelets. ITP most commonly presents as mild mucocutaneous bleeding. Though it is rare, the leading cause of mortality in persons with ITP is intracranial hemorrhage and those that do not respond to therapy are at increased risk. Our understanding of the pathophysiology of ITP has evolved immensely, especially over the last 60 years. The discovery of the platelet-production stimulator, thrombopoietin (TPO), lent clarity to an earlier hypothesis that inhibition of platelet production at the level of the megakaryocyte, at least in part, accounts for thrombocytopenia in adults with ITP. This facilitated the development of TPO-based therapies to treat ITP. Thrombopoietin receptor agonists are one of the most recent treatments to enter the landscape. Original production of a recombinant human TPO was halted after clinical trials revealed the untoward effect of autoantibodies to the recombinant human TPO with cross-reactivity to endogenous TPO. Next-step development focused on stimulation of the TPO receptor with fewer immunogenic agents. Currently, two such thrombopoietin receptor agonists, romiplostim and eltrombopag, are licensed in the USA to treat thrombocytopenia in adults with persistent or chronic ITP. Ongoing research will assess their efficacy in other immune-mediated and nonimmune-mediated primary and secondary thrombocytopenias.
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Affiliation(s)
- Sarah Chalmers
- University of Illinois College of Medicine - Peoria, Illinois, USA ; The Children's Hospital of Illinois, Illinois, USA
| | - Michael D Tarantino
- University of Illinois College of Medicine - Peoria, Illinois, USA ; The Children's Hospital of Illinois, Illinois, USA ; The Bleeding and Clotting Disorders Institute, Peoria, Illinois, USA
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Rodeghiero F, Ruggeri M. Treatment of Immune Thrombocytopenia in Adults: The Role of Thrombopoietin-Receptor Agonists. Semin Hematol 2015; 52:16-24. [DOI: 10.1053/j.seminhematol.2014.10.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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34
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Matzdorff A, Eberl W, Giagounidis A, Imbach P, Pabinger I, Wörmann B. [Immune thrombocytopenia -- onkopedic guidelines update: recommendations of a joint working group of the DGHO, ÖGHO, SGH + SSH and GPOH]. Oncol Res Treat 2014; 37 Suppl 2:6-25. [PMID: 24613966 DOI: 10.1159/000356910] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Axel Matzdorff
- Klinik für Hämatologie und Onkologie, Caritasklinikum Saarbrücken St. Theresia, Saarbrücken, Deutschland
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35
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Siegal D, Crowther M, Cuker A. Thrombopoietin receptor agonists in primary immune thrombocytopenia. Semin Hematol 2014; 50 Suppl 1:S18-21. [PMID: 23664510 DOI: 10.1053/j.seminhematol.2013.03.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Thrombopoietin (TPO) regulates thrombopoiesis through activation of TPO receptors on the megakaryocyte cell surface, resulting in increased platelet production. The TPO receptor agonists are novel treatments for patients with chronic ITP aimed at increasing platelet production through interactions with the TPO receptor on megakaryocytes. Two TPO receptor agonists, romiplostim and eltrombopag, have received regulatory approval. In patients with chronic ITP who remain at risk of bleeding following treatment with first-line therapies, these agents have been shown to increase platelet counts, decrease bleeding events, and reduce the need for adjunctive or rescue treatments. The TPO receptor agonists are well-tolerated, though uncertainty remains regarding the risk of thromboembolism and bone marrow fibrosis. Comparative clinical trial data addressing the efficacy, safety, cost-effectiveness, and impact on health-related quality of life of TPO receptor agonists relative to other second-line treatment options are needed to guide treatment decisions in chronic ITP patients who fail first-line therapies.
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Affiliation(s)
- Deborah Siegal
- Division of Hematology and Thromboembolism, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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36
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Lozano ML, Vicente V. [Current treatment of primary immune thrombocytopenia]. Med Clin (Barc) 2014; 142:399-405. [PMID: 23809409 DOI: 10.1016/j.medcli.2013.04.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
Abstract
Primary immune thrombocytopenia, also termed immune thrombocytopenic purpura (ITP) is an autoimmune disorder characterized by premature platelet destruction and impaired platelet production. Traditional treatment of ITP has predominantly consisted of immune suppression and/or modulation. However, the understanding of the immune mediated impairment of platelet production has led to the development of new treatments that target the thrombopoietin receptor, promoting formation of megakaryocytes and increasing platelet counts. Best practice for the management of ITP has not yet been established because data from comparative studies are lacking. While some disagreement might still remain among experts concerning therapy (when, who, and how should be treated), in recent years different evidence-based practice guidelines have been published to assist healthcare professionals in the diagnosis and treatment of ITP. This review describes the current treatment landscape of ITP.
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Affiliation(s)
- María L Lozano
- Centro Regional de Hemodonación, Hospital J.M. Morales Meseguer, Universidad de Murcia, Murcia, España
| | - Vicente Vicente
- Centro Regional de Hemodonación, Hospital J.M. Morales Meseguer, Universidad de Murcia, Murcia, España.
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37
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Baldini S, Carrai V, Puccini B, Rigacci L, Alterini R, Bosi A. Romiplostim before splenectomy in a patient with aggressive non-Hodgkin lymphoma and poor response to platelet transfusions. Transfus Med 2014; 24:125-6. [PMID: 24720383 DOI: 10.1111/tme.12106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 12/16/2013] [Accepted: 01/11/2014] [Indexed: 11/30/2022]
Affiliation(s)
- S Baldini
- Haematology Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, 50134, Florence, Italy
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38
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Kurtoğlu E, Karakuş V. Immune thrombocytopenia in adults. World J Immunol 2014; 4:34-41. [DOI: 10.5411/wji.v4.i1.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/18/2013] [Accepted: 12/16/2013] [Indexed: 02/05/2023] Open
Abstract
Immune thrombocytopenia is an autoimmune disease resulting in the destruction of platelets. It is classified as acute, thrombocytopenia occurring for < 6 mo and usually resolving spontaneously, and chronic, lasting > 6 mo and requiring therapy to improve the thrombocytopenia. The underlying defects leading to autoantibody production are unknown. Molecular mimicry appears to play a role in the development of self-reactive platelet antibodies after vaccination and certain viral infections. Platelet life span is reduced as a consequence of antibody-mediated clearance by tissue macrophages in essentially all patients. Diagnosis is based on the exclusion of the other causes of thrombocytopenia. Steroid is the first choice of the treatment, often followed by splenectomy in unresponsive cases. Intravenous immunoglobulin, anti-Rho(D) immune globulin, azathioprine, cyclosporine A, cyclophosphamide, danazol, dapsone, mycophenolate mofetil, rituximab, thrombopoietin receptor agonists and vinca alkaloids are other choices of treatment.
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39
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Janssens A. Romiplostim for the treatment of primary immune thrombocytopenia. Expert Rev Hematol 2014; 5:133-44. [DOI: 10.1586/ehm.12.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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40
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Rodeghiero F, Stasi R, Giagounidis A, Viallard JF, Godeau B, Pabinger I, Cines D, Liebman H, Wang X, Woodard P. Long-term safety and tolerability of romiplostim in patients with primary immune thrombocytopenia: a pooled analysis of 13 clinical trials. Eur J Haematol 2013; 91:423-36. [DOI: 10.1111/ejh.12181] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2013] [Indexed: 12/19/2022]
Affiliation(s)
| | | | | | | | | | | | - Douglas Cines
- Perelman School of Medicine; University of Pennsylvania; Philadelphia PA USA
| | - Howard Liebman
- Keck School of Medicine; University of Southern California; Los Angeles CA USA
| | - Xuena Wang
- Global Biomedical Data Sciences; Amgen Inc.; Thousand Oaks CA USA
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41
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Potential usefulness of thrombopoietin receptor agonists in haemophiliacs with thrombocytopaenia due to chronic liver disease. Blood Coagul Fibrinolysis 2013; 24:231-6. [PMID: 23518832 DOI: 10.1097/mbc.0b013e3283606a0b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
New thrombopoietin receptor agonists (TPO-RA) eltrombopag and romiplostin were initially used for refractory immune thrombocytopaenic purpura, but more recently reported experience shows that they may also be applied to patients with thrombocytopaenia secondary to hepatitis C virus (HCV)-related chronic liver disease (CLD) in certain clinical situations; in haemophilic patients these drugs are always part of a therapeutic approach involving other haemostatic resources required to cover the joint congenital and acquired bleeding diathesis found in these patients. Platelet count elevation before invasive procedures or surgery or prior to and during antiviral therapy involving interferon are the main clinical applications of these drugs; they might also be useful in cases with advanced CLD and severe thrombocytopaenia in order to prevent recurrent bleeding episodes (namely articular and muscular in haemophilic individuals) or reduce bleeding risk in patients with multiple haemorrhagic risk factors. Long-term prophylactic treatment with factor concentrates in such cases is mandatory. There have been some reports of portal or splanchnic thromboses in patients on TPO-RA with CLD, especially in cases undergoing invasive procedures who reach platelet counts at least 200×10/l and often with additional risk factors for thrombosis. For this reason, and although haemophilic patients have an important protection against thrombosis, platelet counts should ideally be maintained between 50 and 100×10/l with dose adjustments carried out as required and initial doses of eltrombopag in patients with moderate or severe CLD, especially in prolonged treatments, should be reduced to 25 g once daily. These new drugs can be a useful adjuvant tool in patients with thrombocytopaenia secondary to CLD.
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42
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Deutsch VR, Tomer A. Advances in megakaryocytopoiesis and thrombopoiesis: from bench to bedside. Br J Haematol 2013; 161:778-93. [PMID: 23594368 DOI: 10.1111/bjh.12328] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Megakaryocytopoiesis involves the commitment of haematopoietic stem cells, proliferation and terminal differentiation of megakaryocytic progenitors (MK-p) and maturation of megakaryocytes (MKs) to produce functional platelets. This complex process occurs in specialized niches in the bone marrow where MKs align adjacent to vascular endothelial cells, form proplatelet projections and release platelets into the circulation. Thrombopoietin (THPO, TPO) is the primary growth factor for the MK lineage and necessary at all stages of development. THPO is constitutively produced in the liver, and binds to MPL (c-Mpl) receptor on platelets and MKs. This activates a cascade of signalling molecules, which induce transcription factors to drive MK development and thrombopoiesis. Decreased turnover rate and platelet number result in increased levels of free THPO, which induces a concentration-dependent compensatory response of marrow-MKs to enhance platelet production. Newly developed thrombopoietic agents operating via MPL receptor facilitate platelet production in thrombocytopenic states, primarily immune thrombocytopenia. Other drugs are available for attenuating malignant thrombocytosis. Herein, we review the regulation of megakaryocytopoiesis and platelet production in normal and disease states, and the innovative drugs and therapeutic modalities to stimulate or decrease thrombopoiesis.
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Affiliation(s)
- Varda R Deutsch
- The Haematology Institute, Tel Aviv Sourasky Medical Centre, Tel Aviv, Israel.
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43
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Standardization of bleeding assessment in immune thrombocytopenia: report from the International Working Group. Blood 2013; 121:2596-606. [DOI: 10.1182/blood-2012-07-442392] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract
In a previous publication on new terminology, definitions, and outcome criteria for immune thrombocytopenia (ITP), the International Working Group (IWG) on ITP acknowledged that response to treatment should consist of clinically meaningful end points such as bleeding manifestations and that platelet count may not be the ideal parameter for capturing the benefits of therapy. The IWG now proposes a consensus-based ITP-specific bleeding assessment tool (ITP-BAT) with definitions and terminology consistent with those adopted for other bleeding disorders. Bleeding manifestations were grouped into three major domains: skin (S), visible mucosae (M), and organs (O), with gradation of severity (SMOG). Each bleeding manifestation is assessed at the time of examination. Severity is graded from 0 to 3 or 4, with grade 5 for any fatal bleeding. Bleeding reported by the patient without medical documentation is graded 1. Within each domain, the same grade is assigned to bleeding manifestations of similar clinical impact. The “worst bleeding manifestation since the last visit” (observation period) is graded (a suitable database collection form is provided), and the highest grade within each domain is recorded. The SMOG system provides a consistent description of the bleeding phenotype in ITP, and the IWG unanimously supports its adoption and validation in future clinical studies.
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44
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Tomov S, Lazarchick J, Self SE, Bruner ET, Budisavljevic MN. Kidney-limited thrombotic microangiopathy in patients with SLE treated with romiplostim. Lupus 2013; 22:504-9. [DOI: 10.1177/0961203313477900] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We present the case of a 19 year-old Caucasian female with history of systemic lupus erythematosus (SLE) and normal baseline kidney function who developed severe acute renal failure following treatment of thrombocytopenia with the thrombopoietic agent romiplostim. Percutaneous kidney biopsy revealed thrombotic microangiopathy (TMA) without immune complex lupus glomerulonephritis. We discuss pathogenesis and differential diagnosis of TMA in patients with SLE and raise concerns regarding the use of thrombopoietic agents in such patients. Based on favorable long-term outcome in our case aggressive treatment and in particular prolonged use of plasma exchange in these patients are advocated.
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Affiliation(s)
- S Tomov
- Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
| | - J Lazarchick
- Pathology and Laboratory Medicine Medical University of South Carolina, Charleston, South Carolina, USA
| | - SE Self
- Pathology and Laboratory Medicine Medical University of South Carolina, Charleston, South Carolina, USA
| | - ET Bruner
- Pathology and Laboratory Medicine Medical University of South Carolina, Charleston, South Carolina, USA
| | - MN Budisavljevic
- Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, USA
- Ralph H. Johnson VA Medical Center, Charleston, South Carolina, USA
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45
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Raval JS, Redner RL, Kiss JE. Plateletpheresis for postsplenectomy rebound thrombocytosis in a patient with chronic immune thrombocytopenic purpura on romiplostim. J Clin Apher 2013; 28:321-4. [DOI: 10.1002/jca.21254] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 12/22/2012] [Accepted: 01/14/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Jay S. Raval
- Department of Pathology and Laboratory Medicine; University of North Carolina; Chapel Hill; North Carolina
| | - Robert L. Redner
- Department of Medicine; University of Pittsburgh; Pittsburgh; Pennsylvania
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46
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Kuter DJ, Bussel JB, Newland A, Baker RI, Lyons RM, Wasser J, Viallard JF, Macik G, Rummel M, Nie K, Jun S. Long-term treatment with romiplostim in patients with chronic immune thrombocytopenia: safety and efficacy. Br J Haematol 2013; 161:411-23. [DOI: 10.1111/bjh.12260] [Citation(s) in RCA: 189] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 01/09/2013] [Indexed: 11/28/2022]
Affiliation(s)
| | - James B. Bussel
- Division of Hematology; Departments of Pediatrics and Medicine; Weill Medical College of Cornell University; New York; NY; USA
| | - Adrian Newland
- Department of Haematology; The Royal London Hospital; Whitechapel; London; UK
| | - Ross I. Baker
- Centre for Thrombosis and Haemophilia; Royal Perth Hospital; Murdoch University; Perth; WA; Australia
| | - Roger M. Lyons
- Cancer Care Centers South Texas/US Oncology; San Antonio; TX; USA
| | - Jeffrey Wasser
- Division of Hematology-Oncology; Department of Medicine; University of Connecticut School of Medicine; Farmington; CT; USA
| | - Jean-Francois Viallard
- Université Victor Segalen Bordeaux 2; Hôpital Haut-Lévêque; CHU de Bordeaux; Pessac; France
| | - Gail Macik
- University of Virginia; Charlottesville; VA; USA
| | - Mathias Rummel
- Klinikum der Justus-Liebig-Universität; Giessen; Germany
| | - Kun Nie
- Amgen Inc.; Thousand Oaks; CA; USA
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47
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Mulla CM, Rashidi A, Levitov AB. Extensive cerebral venous sinus thrombosis following a dose increase in eltrombopag in a patient with idiopathic thrombocytopenic purpura. Platelets 2013; 25:144-6. [PMID: 23320857 DOI: 10.3109/09537104.2012.758359] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christopher M Mulla
- Department of Internal Medicine, Eastern Virginia Medical School , Norfolk, VA , USA
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48
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Matzdorff A, Beer JH. Immune Thrombocytopenia Patients Requiring Anticoagulation—Maneuvering Between Scylla and Charybdis. Semin Hematol 2013; 50 Suppl 1:S83-8. [DOI: 10.1053/j.seminhematol.2013.03.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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49
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Arnold DM. Positioning new treatments in the management of immune thrombocytopenia. Pediatr Blood Cancer 2013; 60 Suppl 1:S19-22. [PMID: 23109488 PMCID: PMC4854632 DOI: 10.1002/pbc.24341] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 08/30/2012] [Indexed: 01/19/2023]
Abstract
Immune thrombocytopenia (ITP) is a syndrome characterized by low platelet counts and an increased risk of bleeding. For most children, ITP is a self-limiting disease; however, for some children and most adults, thrombocytopenia can become chronic. Newer therapies for ITP include rituximab and thrombopoietin (TPO) receptor agonists. Rituximab is a useful second-line therapy and may be splenectomy-sparing. Thrombopoeitin receptor agonists have demonstrated large treatment effects with respect to increasing platelet levels; however, they require maintenance dosing. This review summarizes how these new agents might be positioned in the management of patients with chronic ITP.
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Affiliation(s)
- Donald M. Arnold
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada,Canadian Blood Services, Hamilton, Ontario, Canada,Correspondence to: Donald M. Arnold, MDCM, MSc, Department of Medicine, McMaster University, 1280 Main Street West HSC 3V50, Hamilton, Ontario, Canada L8N 4K1.
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50
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Successful antiviral therapy for hepatitis C virus-induced cirrhosis after an increase in the platelet count with romiplostim: two case reports. Eur J Gastroenterol Hepatol 2012; 24:1455-8. [PMID: 22890208 DOI: 10.1097/meg.0b013e328357d5f2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Thrombocytopenia is a common finding in patients with chronic liver disease related to hepatitis C virus (HCV) infection. Interferon therapy may aggravate thrombopenia through the inhibition of platelet production, leading to premature discontinuation of therapy, dose reduction, and viral relapse. The use of thrombopoietin agonists (romiplostim and eltrombopag) seem to be a useful way to increase the platelet count and facilitate interferon therapy in patients with a chronic HCV infection. Here, we report on the first two cases of patients with HCV-related cirrhosis successfully treated for HCV infection following an increase in the platelet count with romiplostim. Severe thrombocytopenia developed in both patients at weeks 22 and 12 of antiviral therapy, respectively. Considering the risk of relapse in the case of interferon dose reduction or early treatment discontinuation, we initiated platelet growth factor therapy with romiplostim. This approach allowed us to maintain a reasonable platelet count (>50 × 10⁹/l) and completion of an anti-HCV protocol without dose reduction, achieving a sustained virological response.
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