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Betts MB, Liu X, Junqueira DR, Fahrbach K, Neupane B, Ronnebaum S, Dhamane AD. Risk of Venous Thromboembolism by Cancer Type: A Network Meta-Analysis. Semin Thromb Hemost 2024; 50:328-341. [PMID: 38395064 DOI: 10.1055/s-0044-1779672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Patients with cancer have an increased risk of venous thromboembolism (VTE). Comparing tumor-specific VTE risk is complicated by factors such as surgery, disease stage, and chemotherapy. Network meta-analysis (NMA) using cancer types as network nodes enabled us to estimate VTE rates by leveraging comparisons across cancer types while adjusting for baseline VTE risk in individual studies. This study was conducted to estimate the risk of VTE by cancer type and factors influencing VTE risk. The Embase, MEDLINE, and Cochrane Library repositories were systematically searched to identify clinical trials and observational studies published from 2005 to 2022 that assessed the risk of primary cancer-related VTE among two or more distinct cancer types. Studies with similar cancer populations and study methods reporting VTE occurring within 1 year of diagnosis were included in the NMA. Relative VTE rates across cancer types were estimated with random-effects Bayesian NMAs. Absolute VTE rates were calculated from these estimates using the average VTE incidence in lung cancer (the most frequently reported type) as the "anchor." From 2,603 records reviewed, 30 studies were included in this NMA. The general network described 3,948,752 patients and 18 cancer types: 3.1% experienced VTE within 1 year of diagnosis, with cancer-specific rates ranging from 0.7 to 7.4%. Consistent with existing VTE risk prediction tools, pancreatic cancer was associated with higher-than-average VTE risk. Other cancer types with high VTE risk were brain and ovarian cancers. The relative rankings of VTE risk for certain cancers changed based on disease stage and/or receipt of chemotherapy or surgery.
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Affiliation(s)
| | - Xuejun Liu
- Bristol Myers Squibb Company, Lawrenceville, New Jersey
- Department of Health Policy and Management, Gillings School of Public Health, UNC-Chapel Hill, Chapel Hill, North Carolina
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Samji N, Bhatt MD, Kulkarni K. Challenges in Management of VTE in Children With Cancer: Risk Factors and Treatment Options. Front Pediatr 2022; 10:855162. [PMID: 35463883 PMCID: PMC9021605 DOI: 10.3389/fped.2022.855162] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/11/2022] [Indexed: 01/19/2023] Open
Abstract
Venous thromboembolism (VTE) occurs in 2.1 to up to 50% of children with cancer and contributes to long term morbidity as well as early mortality in this population. Pediatric patients with malignancy are predisposed to VTE due to the prothrombotic nature of cancer and its associated coagulopathies as well as chemotherapeutic agents, use of central venous catheters, surgery, radiotherapy, and concomitant thrombophilia. Management of thrombosis in this population is challenging due to concomitant thrombocytopenia, associated bleeding risks, concurrent co-morbidities, and toxicities of therapy. The aim of this paper is to highlight clinically relevant issues and management dilemmas using clinical vignettes. We review the clinical significance of asymptomatic and symptomatic thrombosis, examine the various options for asparaginase-associated thrombosis, address the role and controversies of direct oral anticoagulants, and describe our approach to managing anticoagulation therapy in the context of chemotherapy-induced thrombocytopenia.
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Affiliation(s)
- Nasrin Samji
- Department of Pediatrics, Division of Hematology Oncology, McMaster University, Hamilton, ON, Canada
| | - Mihir D Bhatt
- Department of Pediatrics, Division of Hematology Oncology, McMaster University, Hamilton, ON, Canada
| | - Ketan Kulkarni
- Department of Pediatrics, Division of Hematology Oncology, Dalhousie University and Izaak Walton Killam (IWK) Health Centre, Halifax, NS, Canada
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Essa A, Asa'af M, Shtarker H. Preliminary results: continuous double luminal catheter drainage for the management of septic hip arthritis in children. J Pediatr Orthop B 2022; 31:e11-e16. [PMID: 33741831 DOI: 10.1097/bpb.0000000000000866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Septic arthritis in children is considered an orthopedic surgical emergency, which requires prompt intervention to prevent later sequela. In the last decades, several minimal invasive techniques were suggested as an alternative to the standard treatment of septic arthritis in the pediatric hip via open arthrotomy. We aimed to investigate the efficacy and safety of a new minimal invasive technique-double luminal catheter drainage (DLDC)-in treating septic hip arthritis in children. Retrospective case series analysis was performed on all patients 1-18 years of age diagnosed with septic hip arthritis and treated by the new suggested minimal invasive technique between the years 2009-2019 at medium-sized medical center. Five patients were treated by DLDC with a follow-up period of 12 months posttreatment. The diagnosis was based on joint aspirated fluid analysis criteria. During the follow-up period, no later sequel, including avascular necrosis, or infection recurrence were observed. The new minimal invasive treatment technique suggested in this study seems to be efficient and safe in treating septic hip arthritis in children without later sequela or the need for open arthrotomy, especially if performed early on. However, due to the small study sample, no generalization of the findings can be made as future studies with larger study samples are needed to validate the DLDC technique.
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Affiliation(s)
- Ahmad Essa
- Department of Orthopedics, Galilee Medical Center, Nahariya, Israel
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Hashem H, Zeineddin M, Bater R, Amayiri N, Al-Qasem W, Hammo B, Sultan I, AlMasri R, Abdel-Razeq H. Thrombosis and Anticoagulant Therapy Among Pediatric Cancer Patients: Real-Life Data. Cureus 2021; 13:e20084. [PMID: 34987942 PMCID: PMC8719720 DOI: 10.7759/cureus.20084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Venous thromboembolism (VTE) in children is relatively rare, and more so among those with cancer. In this study, we report the characteristics and outcomes of children with cancer-associated thrombosis. Methods: We reviewed institutional databases for all children with cancer and a diagnosis of VTE at King Hussein Cancer Center in Jordan. Variables reviewed are patients’ clinical characteristics, treatment for cancer, and anticoagulation therapy. Results: Between January 2011 and December 2018, a total of 45 patients fulfilled the inclusion criteria, and the median age was 10.4 (0.8-17.9) years. The most common underlying diagnosis was acute lymphoblastic leukemia (n = 13, 29%). At the time of VTE, 29 (64.4%) patients were receiving chemotherapy, and eight (17.8%) had a central venous catheter (CVC). The majority of patients (n = 37, 82%) developed VTE within 30 days of hospitalization. Thrombosis mostly involved the extremities (n = 23, 51%) and sagittal vein (n = 12, 26.7%). All patients were treated with low-molecular-weight heparin (LMWH), complicated by bleeding in three (6.6%) patients. Conclusion: In contrast to adults, VTE in pediatric cancer patients is more associated with chemotherapy and recent hospitalization. LMWH is a safe and effective therapy for children with cancer who develop VTE.
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Howie C, Erker C, Crooks B, Moorehead P, Kulkarni K. Incidence and risk factors of venous thrombotic events in pediatric patients with CNS tumors compared with non-CNS cancer: A population-based cohort study. Thromb Res 2021; 200:51-55. [PMID: 33540292 DOI: 10.1016/j.thromres.2021.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Venous thromboembolism (VTE) is a well-recognized complication in pediatric cancer patients. It has been demonstrated that the incidence of VTE in pediatric patients with central nervous system (CNS) tumors is lower than that of patients with other cancers. Risk factors for developing cancer-related thrombosis are numerous and can include patient, disease, or treatment-related influences. The present study was designed to assess the VTE incidence in a pediatric oncology population, and to investigate whether intensity of treatment has similar associated with risk of VTE development in patients with and without CNS tumors. METHODS A retrospective population-based cohort study of pediatric oncology patients in Atlantic Canada was conducted. Data collected from medical records included demographics, cancer type, treatment, presence of central venous catheters (CVC), and presence of thrombosis. Treatment intensity was assessed using the intensity of treatment rating scale (ITR-3). Study period was from January 2000 to December 2017. SPSS version 24 was used for statistical analysis. RESULTS Of 1262 patients with pediatric cancer, 247 (19.6%) had CNS tumors. VTE occurred in significantly fewer (n = 5, 2%) patients with CNS tumors compared with patients with non-CNS cancers (n = 79, 7.8%) (p = 0.001). The ITR-3 scores did not differ significantly between the CNS and non-CNS groups (p = 0.638). In a multivariate logistic regression analysis, ITR-3 score was associated with VTE (odds ratio [OR]: 1.48, 95% CI: 1.2-1.9), while presence of CNS tumor was protective (OR: 0.26, 95% CI: 0.1-0.6). CONCLUSIONS We demonstrate that pediatric patients with CNS tumors experience a significantly lower incidence of VTE compared with patients with non-CNS cancer. An increase in the ITR-3 rating significantly increased the odds of developing VTE.
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Affiliation(s)
- Chelsea Howie
- Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - Craig Erker
- Division of Hematology/Oncology, Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Bruce Crooks
- Division of Hematology/Oncology, Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Paul Moorehead
- Pediatric Hematology/Oncology, Janeway Children's Health and Rehabilitation Centre, St. John's, NL, Canada; Faculty of Medicine, Memorial University, St. John's, NL, Canada; Janeway Pediatric Research Unit, Memorial University, St. John's, NL, Canada
| | - Ketan Kulkarni
- Division of Hematology/Oncology, Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada.
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Abstract
BACKGROUND Thrombosis is the formation of a blood clot, or thrombus, inside of a blood vessel. Pediatric patients with cancer are at a higher risk of developing a thrombus because of their underlying disease, as well as their treatment and supportive care. Thrombosis can lead to significant morbidity, such as pulmonary embolism, in pediatric patients with cancer. OBJECTIVES The purpose of this study is to identify risk factors for developing a thrombus among pediatric patients with cancer, along with treatment and prevention protocols. This study also examines the clinical nurse's role in preventing thrombosis and caring for pediatric patients who present with thrombosis. METHODS The thrombosis literature was reviewed to identify risk factors, treatment regimens, and strategies for prevention. FINDINGS Thrombosis in pediatric patients with cancer requires management of potential complications so that cancer treatment may continue.
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Gartrell J, Kaste SC, Sandlund JT, Flerlage J, Zhou Y, Cheng C, Estepp J, Metzger ML. The association of mediastinal mass in the formation of thrombi in pediatric patients with non-lymphoblastic lymphomas. Pediatr Blood Cancer 2020; 67:e28057. [PMID: 31736198 PMCID: PMC7233458 DOI: 10.1002/pbc.28057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/07/2019] [Accepted: 10/10/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND Children diagnosed with cancer are at a significantly higher risk of developing a thrombotic event (TE) compared with the general population. The rarity of these events makes it difficult to discern the specific risk factors; however, age, sex, presence of central venous lines, inherited thrombophilia, and mediastinal mass may play a role. The primary aim of this study is to identify prognostic characteristics of children diagnosed with non-lymphoblastic lymphomas associated with a greater risk of developing a TE early on in their disease, with an increased focus on mediastinal mass characteristics. METHODS Retrospective chart review of pediatric patients diagnosed with non-lymphoblastic lymphoma between 2004 and 2014 at St. Jude Children's Research Hospital. RESULTS TE occurred in 8.5% (n = 28/330) of individuals at a median of 21 days from the diagnosis of a non-lymphoblastic lymphoma, with 60% of TEs occurring within 30 days of diagnosis. Of the variables evaluated, only presence of a peripherally inserted central catheter (odds ratio [OR]: 3.14 [95% CI: 1.24-7.98; P = 0.02]) and degree of superior vena cava (SVC) compression of > 25% increased the odds of developing a TE (OR: 2.2 [95% CI: 1.01-4.93; P = 0.048]). CONCLUSION Pediatric patients with non-lymphoblastic lymphoma are at increased risk of developing TEs. In contrast to previous studies, the presence of a mediastinal mass alone was not associated with a higher risk of TE, but individuals with a mediastinal mass with 25% or greater degree of SVC compression were more likely to develop a TE. This finding highlights a high-risk group of children who may benefit from prophylactic anticoagulation.
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Affiliation(s)
- Jessica Gartrell
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, TN,University of Tennessee Health Science Center, Memphis, TN
| | - Sue C. Kaste
- University of Tennessee Health Science Center, Memphis, TN,Department of Diagnostic Imaging, St Jude Children’s Research Hospital, Memphis, TN
| | - John T. Sandlund
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, TN,University of Tennessee Health Science Center, Memphis, TN
| | - Jamie Flerlage
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, TN,University of Tennessee Health Science Center, Memphis, TN
| | - Yinmei Zhou
- Department of Biostatistics, St Jude Children’s Research Hospital, Memphis, TN
| | - Cheng Cheng
- Department of Biostatistics, St Jude Children’s Research Hospital, Memphis, TN
| | - Jeremie Estepp
- University of Tennessee Health Science Center, Memphis, TN,Department of Hematology, St Jude Children’s Research Hospital, Memphis, TN
| | - Monika L. Metzger
- Department of Oncology, St Jude Children’s Research Hospital, Memphis, TN,University of Tennessee Health Science Center, Memphis, TN
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Park ES, Choi HS, Lee KS, Kim SW, Lee JM. Venous Thromboembolism in Children and Young Adults in Korea: Analysis of the Korean Health Insurance Review and Assessment Service Database. J Korean Med Sci 2019; 34:e316. [PMID: 31858756 PMCID: PMC6926097 DOI: 10.3346/jkms.2019.34.e316] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/28/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Venous thromboembolism (VTE) is very rare in childhood. Nevertheless, its incidence has increased recently. This study aimed to identify risk factors for developing thrombosis in childhood cancers and other childhood diseases through the Korean Health Insurance Review and Assessment Service database. METHODS Data were extracted from the Korean Health Insurance Review and Assessment Service database. Children and young adults from 1 month to 29 years of age were eligible, and 21,747 cases of VTE between January 2008 and December 2016 were identified. RESULTS The VTE incidence was high in children younger than 1 year of age. After 1 year of age, its incidence decreased rapidly and gradually increased. The VTE incidence for children between 0 and 1 year of age was 10.23-fold higher than that for those between 1 and 5 years of age. Annual VTE incidence increased by year. The age-standardized annual incidence rates were 9.98 per 100,000 population in 2008 and 22.53 per 100,000 population in 2016. The age-standardized annual incidence rate increased 2.25-fold during the 8 years. The lower extremity was the most common site of venous thrombosis. CONCLUSION The incidence of VTE in a population younger than 30 years was 13.11 per 100,000 persons in Korea. We found a bimodal age distribution of the VTE incidence with peaks at infancy and again after 16 years. The incidence of portal vein thrombosis was high in infants, and infection and malignancy were the most common comorbidities in patients with VTE.
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Affiliation(s)
- Eun Sil Park
- Department of Pediatrics, College of Medicine, Gyeongsang National University, Jinju, Korea
| | - Hyoung Soo Choi
- Department of Pediatrics, Seoul National University Bundang Hospital, College of Medicine, Seoul National University, Seongnam, Korea
| | - Kyeong Soo Lee
- Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Daegu, Korea
| | - Sang Won Kim
- Medical Research Center, College of Medicine, Yeungnam University, Daegu, Korea
| | - Jae Min Lee
- Department of Pediatrics, College of Medicine, Yeungnam University, Daegu, Korea.
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Central Venous Catheter-associated Venous Thromboembolism in Children With Hematologic Malignancy. J Pediatr Hematol Oncol 2018; 40:e519-e524. [PMID: 29863581 DOI: 10.1097/mph.0000000000001229] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
In pediatric oncology, the diagnosis of a hematologic malignancy and presence of a central venous catheter (CVC) have been identified as significant risk factors for the development of a venous thromboembolism (VTE). There remain little data regarding CVC factors associated with CVC-related VTE. Using the VTE and oncology database in a quaternary care center, a retrospective cohort study was conducted in children below 18 years old with hematologic cancer from November 5, 2012 to April 4, 2016. Patient, CVC factors, and VTE occurrence were analyzed to identify significant patient and CVC factors associated with the development of clinically identified CVC-related VTE. Utilizing the χ, Mann-Whitney, and the Fisher exact tests, patient factors were compared across VTE yes/no groups. Of the 198 study patients, 22 VTE cases were identified. Eighteen VTE events were CVC-associated, occurring in 9% of study population. Peripherally inserted central catheter lines and older ages were associated with VTE. The use of tissue-plasminogen activator for CVC occlusion was associated with decreased VTE rates, suggesting a protective potential.
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12
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The association of venous thromboembolism with survival in pediatric cancer patients: a population-based cohort study. Ann Hematol 2018; 97:1903-1908. [PMID: 29846760 DOI: 10.1007/s00277-018-3371-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 05/08/2018] [Indexed: 01/19/2023]
Abstract
Venous thromboembolism (VTE) is a well-recognized complication in pediatric oncology patients. Studies in adult oncology patients have suggested a potential negative association between VTE and survival, but this association has not been examined in pediatric patients yet. The aim of this study was to assess the association of VTE with survival in pediatric oncology patients. Data from all pediatric oncology patients treated at the two tertiary care centers in Atlantic Canada were pooled to create a population-based cohort. The association between VTE and survival was analyzed using a Cox proportional hazards model stratified by diagnosis group (leukemia, lymphoma, and other; sarcoma) and adjusted for age at diagnosis and sex. Out of 939 patients included in this study, 73 had a VTE (8%) and 131 (14%) patients died during the study period. Children in the leukemia/lymphoma/other group with a VTE had significantly poorer survival relative to children in the same group who did not have a VTE. Although children with sarcoma and VTE had poorer survival compared to children with sarcoma with no VTE, this association was not statistically significant. In this population-based study, we found a negative association between VTE and survival in pediatric oncology patients. If future studies confirm this association, this finding may have prognostic implications and potentially offer new avenues for the management of pediatric patients with cancer.
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Sibson KR, Biss TT, Furness CL, Grainger JD, Hough RE, Macartney C, Payne JH, Chalmers EA. BSH Guideline: management of thrombotic and haemostatic issues in paediatric malignancy. Br J Haematol 2018; 180:511-525. [DOI: 10.1111/bjh.15112] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/28/2017] [Accepted: 11/07/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Keith R. Sibson
- Department of Haematology; Great Ormond Street Hospital; London UK
| | - Tina T. Biss
- The Newcastle Upon Tyne Hospitals NHS Foundation Trust; Newcastle Upon Tyne UK
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14
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Hematologic Manifestations of Childhood Illness. Hematology 2018. [DOI: 10.1016/b978-0-323-35762-3.00152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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15
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Piovesan D, Attard C, Monagle P, Ignjatovic V. Epidemiology of venous thrombosis in children with cancer. Thromb Haemost 2017; 111:1015-21. [DOI: 10.1160/th13-10-0827] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 01/12/2014] [Indexed: 11/05/2022]
Abstract
SummaryThere has been an extensive body of research focusing on the epidemiology of thrombosis in adult cancer populations; however, there is significantly less knowledge about thrombosis in paediatric cancer populations. Thrombosis is diagnosed with increasing frequency in children being treated for cancer, and there is an urgent need to increase our understanding of the epidemiology of thrombosis in this population. Currently, there are no guidelines for identification of high-risk groups, prophylaxis or management of thrombotic complications in paediatric cancer patients. We reviewed the available literature regarding the epidemiology, mechanisms, risk factors, prophylaxis and outcomes of thrombosis in children with cancer and identified areas that require further research. The reported incidence of symptomatic venous thromboembolism (VTE) in children with cancer ranges between 2.1% and 16%, while the incidence of asymptomatic events is approximately 40%. Approximately 30% of VTE in this population is associated with central venous lines (CVL). The most common location of VTE is upper and lower extremity deep venous thrombosis (43 to 50% of events, respectively), while 50% of events in ALL patients occur in the central nervous system. Key characteristics that increase the risk of thrombosis include the type of cancer, age of the patient, the presence of a CVL, presence of pulmonary/intra thoracic disease, as well as the type of chemotherapy. Outcomes for paediatric cancer patients with VTE include post-thrombotic syndrome, pulmonary embolism, recurrent thromboembolism, destruction of upper venous system and death. Prospective studies aimed at enabling risk stratification of patients are required to facilitate development of paediatric specific recommendations related to thromboprophylaxis in this population.
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Klaassen ILM, van Els AL, van de Wetering MD, van Ommen CH. Increasing Incidence and Recurrence Rate of Venous Thromboembolism in Paediatric Oncology Patients in One Single Centre Over 25 Years. Thromb Haemost 2017; 117:2156-2162. [PMID: 28981557 DOI: 10.1160/th17-02-0109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Venous thromboembolism (VTE) is a serious complication in paediatric oncology patients. To identify the incidence, risk factors and recurrence rate of VTE in paediatric oncology patients, an observational, retrospective cohort study of all consecutive children (≤18 years) with malignancies, treated at the Emma Children's Hospital Academic Medical Centre between January 1989 and December 2013, was done. A matched case-control study in children with lymphomas was performed, to identify thrombotic risk factors. Cumulative recurrence-free survival after first VTE was estimated by the Kaplan-Meier method. Of the 2,183 children included (male: female = 1.4:1.0; median age, 6.6 years) with cancer, 78 patients developed VTE (3.6%; 95% confidence interval [CI], 2.8-4.4). The incidence increased from 0.8% (4/478, 95% CI, 0.0-1.6) between 1989 and 1993 to 10.4% (44/423, 95% CI, 7.6-13.4) between 2009 and 2013. Independent risk factors for VTE were age ≥ 12 years, acute lymphoblastic leukaemia (ALL) and lymphoma. The case-control study in lymphoma patients showed a trend for increased VTE incidence in stage IV lymphoma. Twelve (15.4%) patients developed recurrent thrombosis, 7 patients while on therapeutic or prophylactic anticoagulation. The cumulative recurrence-free survival after first VTE was 88.5, 87.1 and 80.6% after 1, 5 and 10 years, respectively. In conclusion, we demonstrated an increasing incidence of VTE in children with malignancies, with age ≥ 12 years, ALL and lymphoma as independent risk factors. The elevated recurrence rate underlines the importance of full anticoagulant therapy and might warrant prophylactic anticoagulation after first VTE during cancer treatment.
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Affiliation(s)
- Irene L M Klaassen
- Department of Pediatric Hematology, Emma Children's Hospital Academical Medical Center, Amsterdam, The Netherlands.,Department of Vascular Medicine, Academical Medical Center, Amsterdam, The Netherlands
| | - Anne L van Els
- Department of Pediatric Hematology, Emma Children's Hospital Academical Medical Center, Amsterdam, The Netherlands.,Department of Pediatric Oncology, Emma Children's Hospital Academical Medical Center, Amsterdam, The Netherlands
| | - Marianne D van de Wetering
- Department of Pediatric Oncology, Emma Children's Hospital Academical Medical Center, Amsterdam, The Netherlands
| | - C Heleen van Ommen
- Department of Pediatric Hematology, Sophia Children's Hospital Erasmus MC, Rotterdam, The Netherlands
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Asyyed Z, MacDonald T, Digout C, Kulkarni K. Incidence and characteristics of venous thrombotic events in pediatric cancer patients: A 20-year experience in the Maritimes, Canada. Pediatr Hematol Oncol 2017; 34:90-99. [PMID: 28537810 DOI: 10.1080/08880018.2017.1319450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Venous thrombotic events (VTE) are a well-recognized complication in pediatric cancer patients. Population-based data on the incidence and characteristics of VTE in all pediatric cancer patients are limited. This information is crucial to identify patients at high risk and design targeted interventions accordingly. The present study was designed to determine the incidence and characteristics of VTE in the pediatric oncology population. PARTICIPANTS We conducted a retrospective, population-based, cohort study of patients treated in the Maritimes, Canada between 1995 and 2015. RESULTS There were 1210 pediatric hematology/oncology patients from the Maritimes, Canada, treated at the IWK Health Centre between 1995 and 2015. Fifty-eight (4.8%) experienced at least 1 VTE and the majority of patients experienced it within 6 months of cancer diagnosis. The median age of patients who experienced VTE was 10.7 years (SD = 6.0). The most common presenting symptom of thrombosis was central venous line dysfunction, and the most common location for thrombosis was within the upper venous system. We observed that 65.6% of the patients with VTE required >1 central venous catheters (CVC). The presence of a VTE increased the odds of requiring >1 CVC to 3.6 (95% confidence interval: 1.76-7.3). CONCLUSION Thus, in this large, population-based study, we present the incidence and characteristics of VTE in the pediatric oncology population and demonstrate the clinical impact of VTE in terms of loss of CVC. Larger, prospective studies are required to confirm these findings and to develop a risk model for managing and preventing VTE in this patient population.
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Affiliation(s)
- Zeina Asyyed
- a Division of Hematology Oncology, Department of Pediatrics , IWK Health Centre , Halifax , Nova Scotia
| | - Tamara MacDonald
- a Division of Hematology Oncology, Department of Pediatrics , IWK Health Centre , Halifax , Nova Scotia
| | - Carol Digout
- a Division of Hematology Oncology, Department of Pediatrics , IWK Health Centre , Halifax , Nova Scotia
| | - Ketan Kulkarni
- a Division of Hematology Oncology, Department of Pediatrics , IWK Health Centre , Halifax , Nova Scotia
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Ko RH, Thornburg CD. Venous Thromboembolism in Children with Cancer and Blood Disorders. Front Pediatr 2017; 5:12. [PMID: 28220143 PMCID: PMC5292750 DOI: 10.3389/fped.2017.00012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/18/2017] [Indexed: 01/19/2023] Open
Abstract
Venous thromboembolism (VTE) in children is multifactorial and most often related to a combination of inherited and acquired thrombophilias. Children with cancer and blood disorders are often at risk for VTE due to disease-related factors such as inflammation and abnormal blood flow and treatment-related factors such as central venous catheters and surgery. We will review risk factors for VTE in children with leukemia, lymphoma, and solid tumors. We will also review risk factors for VTE in children with blood disorders with specific focus on sickle cell anemia and hemophilia. We will present the available evidence and clinical guidelines for prevention and treatment of VTE in these populations.
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Affiliation(s)
| | - Courtney D Thornburg
- Hemophilia and Thrombosis Treatment Center, Rady Children's Hospital San Diego , San Diego, CA , USA
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19
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Schoot RA, van de Wetering MD, Stijnen T, Tissing WJE, Michiels E, Abbink FCH, Raphael MF, Heij HA, Zwaan M, Lieverst JA, Caron HN, van Ommen H. Prevalence of Symptomatic and Asymptomatic Thrombosis in Pediatric Oncology Patients With Tunneled Central Venous Catheters. Pediatr Blood Cancer 2016; 63:1438-44. [PMID: 27128820 DOI: 10.1002/pbc.26036] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 04/01/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND Pediatric oncology patients with tunneled central venous catheters (CVCs) are at increased risk to develop venous thromboembolic events (VTEs), but the true prevalence of (a)symptomatic VTE is unknown. Aim of this study was to evaluate the prevalence of (a)symptomatic VTE in pediatric oncology patients with tunneled CVCs. PROCEDURE All patients were included in the Aristocaths study: a randomized controlled multicenter trial investigating the prophylactic effect of 70% ethanol locks on CVC-associated bloodstream infections (CABSIs) were eligible for this study. We assessed the following outcomes: (i) symptomatic VTE and (ii) asymptomatic CVC-related VTE (using ultrasound [US]). Follow-up was 6 months, unless patients developed one of the following events: VTE, CABSI, CVC removal, or death. RESULTS We included 305 patients (hematologic malignancy, n = 148; solid tumor, n = 157), median age 9 years (range, 1-18 years). Symptomatic VTE was detected in 8 of 305 patients (2.6%; 95% confidence interval [CI]: 1.1-5.1%), which was related to the CVC in three patients. Patients (185/305) were evaluated with US: 11 of 185 (5.9%; 95% CI: 3.0-10.4%) patients had asymptomatic CVC-related VTE. CONCLUSIONS Prevalence of both symptomatic VTE and asymptomatic CVC-related VTE was low compared to other studies, which may be explained by the inclusion of patients with solid tumors, reduction of CABSI by ethanol, use of tunneled CVCs, and use of US.
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Affiliation(s)
- Reineke A Schoot
- Department of Pediatric Oncology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Marianne D van de Wetering
- Department of Pediatric Oncology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Theo Stijnen
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Wim J E Tissing
- Department of Pediatric Oncology, Beatrix Children's Hospital, University of Groningen, Groningen, The Netherlands
| | - Erna Michiels
- Department of Pediatric Oncology/Hematology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Floor C H Abbink
- Department of Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam, The Netherlands
| | - Martine F Raphael
- Department of Pediatric Oncology/Hematology, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Hugo A Heij
- Pediatric Surgical Center Amsterdam, Academic Medical Center & VU University Medical Center, Amsterdam, The Netherlands
| | - Michel Zwaan
- Department of Pediatric Oncology/Hematology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Jan A Lieverst
- Dutch Childhood Oncology Group, The Hague, The Netherlands
| | - Hubert N Caron
- Department of Pediatric Oncology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Heleen van Ommen
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
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20
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Zhang L, Samad A, Pombo-de-Oliveira MS, Scelo G, Smith MT, Feusner J, Wiemels JL, Metayer C. Global characteristics of childhood acute promyelocytic leukemia. Blood Rev 2015; 29:101-25. [PMID: 25445717 PMCID: PMC4379131 DOI: 10.1016/j.blre.2014.09.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/21/2014] [Accepted: 09/23/2014] [Indexed: 12/29/2022]
Abstract
Acute promyelocytic leukemia (APL) comprises approximately 5-10% of childhood acute myeloid leukemia (AML) cases in the US. While variation in this percentage among other populations was noted previously, global patterns of childhood APL have not been thoroughly characterized. In this comprehensive review of childhood APL, we examined its geographic pattern and the potential contribution of environmental factors to observed variation. In 142 studies (spanning >60 countries) identified, variation was apparent-de novo APL represented from 2% (Switzerland) to >50% (Nicaragua) of childhood AML in different geographic regions. Because a limited number of previous studies addressed specific environmental exposures that potentially underlie childhood APL development, we gathered 28 childhood cases of therapy-related APL, which exemplified associations between prior exposures to chemotherapeutic drugs/radiation and APL diagnosis. Future population-based studies examining childhood APL patterns and the potential association with specific environmental exposures and other risk factors are needed.
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Affiliation(s)
- L Zhang
- School of Public Health, University of California, Berkeley, USA.
| | - A Samad
- School of Public Health, University of California, Berkeley, USA.
| | - M S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center-National Institute of Cancer, Rio de Janeiro, Brazil.
| | - G Scelo
- International Agency for Research on Cancer (IARC), Lyon, France.
| | - M T Smith
- School of Public Health, University of California, Berkeley, USA.
| | - J Feusner
- Department of Hematology, Children's Hospital and Research Center Oakland, Oakland, USA.
| | - J L Wiemels
- Department of Epidemiology and Biostatistics, University of California, San Francisco, USA.
| | - C Metayer
- School of Public Health, University of California, Berkeley, USA.
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21
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Walker AJ, Grainge MJ, Card TR, West J, Ranta S, Ludvigsson JF. Venous thromboembolism in children with cancer - a population-based cohort study. Thromb Res 2013; 133:340-4. [PMID: 24388573 PMCID: PMC3969718 DOI: 10.1016/j.thromres.2013.12.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 11/29/2013] [Accepted: 12/16/2013] [Indexed: 01/19/2023]
Abstract
Introduction Cancer is a known risk factor for venous thromboembolism (VTE) in adults, but population-based data in children are scarce. Materials and methods We conducted a cohort study utilising linkage of the Clinical Practice Research Database (primary care), Hospital Episodes Statistics (secondary care), UK Cancer Registry data and Office for National Statistics cause of death data. From these databases, we selected 498 children with cancer diagnosed between 1997 and 2006 and 20,810 controls without cancer. We calculated VTE incidence rates in children with cancer vs. controls, and hazard ratios (HRs) using Cox regression. Results We identified four VTE events in children with cancer compared with four events in the larger control population corresponding to absolute risks of 1.52 and 0.06 per 1000 person-years respectively. The four children with VTE and cancer were diagnosed with hematological, bone or non-specified cancer. Childhood cancer was hence associated with a highly increased risk of VTE (HR adjusted for age and sex: 28.3; 95%CI = 7.0-114.5). Conclusions Children with cancer are at increased relative risk of VTE compared to those without cancer. Physicians could consider thromboprophylaxis in children with cancer to reduce their excess risk of VTE however the absolute risk is extremely small and the benefit gained therefore would need to be balanced against the risk invoked of implementing such a strategy. Novelty & Impact Statements While there is a reasonable level of knowledge about the risk of VTE in adult populations, it is not well known whether this risk is reflected in paediatric patients. We found a substantial increase in risk of VTE in children with cancer compared to a child population without cancer. While this finding is important, the absolute risk of VTE is still low and must be balanced with the risks of anticoagulation.
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Affiliation(s)
- Alex J Walker
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham City Hospital, NG5 1PB UK; Nottingham Digestive Diseases Centre, NIHR Biomedical Research Unit.
| | - Matthew J Grainge
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham City Hospital, NG5 1PB UK; Nottingham Digestive Diseases Centre, NIHR Biomedical Research Unit
| | - Tim R Card
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham City Hospital, NG5 1PB UK; Nottingham Digestive Diseases Centre, NIHR Biomedical Research Unit
| | - Joe West
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham City Hospital, NG5 1PB UK; Nottingham Digestive Diseases Centre, NIHR Biomedical Research Unit
| | - Susanna Ranta
- Childhood Cancer Research Unit, Karolinska Institutet Stockholm Sweden
| | - Jonas F Ludvigsson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet Sockholm Sweden; Department of Pediatrics, Örebro University Hospital, Örebro University, Örebro Sweden
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22
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Sharathkumar AA, Mahajerin A, Heidt L, Doerfer K, Heiny M, Vik T, Fallon R, Rademaker A. Risk-prediction tool for identifying hospitalized children with a predisposition for development of venous thromboembolism: Peds-Clot clinical Decision Rule. J Thromb Haemost 2012; 10:1326-34. [PMID: 22583578 DOI: 10.1111/j.1538-7836.2012.04779.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The prevalence of VTE is increasing in tertiary pediatric hospitals. Identification of high-risk populations using uniform criteria is required to develop evidence-based VTE prevention guidelines. OBJECTIVE To develop a VTE risk prediction rule, the Peds-Clot clinical Decision Rule (PCDR), to identify high-risk children who were at increased risk of developing VTE. METHODS This retrospective case-control study developed the PCDR using a derivation cohort (173 cases, 346 controls) and validated it on a separate validation cohort (100 cases, 100 controls). A uniform data collection strategy was applied to derive both the samples. Conditional logistic regression analyses were used to develop a risk-prediction model. Each significant predictor was assigned a score based on its beta coefficient and the PCDR was developed. ROC curves were derived to test the performance of the PCDR. RESULTS Characteristics of derivation and validation cohorts were comparable. Six risk factors (positive blood stream infection, central venous catheter, direct admission to ICU/NICU, hospitalization for ≥ 7 days, immobilization for > 72 h, and use of birth control pills) formed the final risk prediction model (risk score range, 0.5-9.5). A risk score of 3 or more identified high-risk children at a sensitivity of 70% and specificity of 80% and AUC of 0.852 (95% confidence interval, 0.814-0.890). The application of a risk score to the validation sample showed sensitivity 57% and specificity 88% and an AUC of 0.875 (95% confidence interval, 0.82-0.924). CONCLUSION Incorporation of the PCDR in routine clinical care can be an attractive strategy to identify high-risk hospitalized children with a predisposition for VTE. The clinical utility of the PCDR needs validation in prospective studies.
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Affiliation(s)
- A A Sharathkumar
- Ann and Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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