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Letters to the Editor
decision of the treating physician, and therefore misclas- sification cannot be ruled out. However, the high fre- quency of response found herein suggests misclassifica- tion is unlikely and may not have impacted the results. Lastly, there was no specific protocol attached to the reg- istry, and care of the patient was left to the discretion of the clinician, thus reflecting general practice.
In conclusion, splenectomy is a very effective approach for the management of selected children with primary ITP as evidenced by platelet count recovery. Although low, the risk of adverse events both peri-operative and in the long-term should be carefully considered when indi- cating this therapeutic modality. The only predictor of response available prior to indication of splenectomy is patient age; the older the patient, the higher the odds of response.
Maria L. Avila,1,2 Nour Amiri,1 Eleanor Pullenayegum,2 Victor Blanchette,1 Paul Imbach3 and Thomas Kühne4 on behalf of the Intercontinental Cooperative ITP Study Group
1Department of Pediatrics, University of Toronto, Division of Hematology/Oncology, The Hospital for Sick Children, Toronto, Ontario, Canada; 2Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada; 3Medical Faculty, University of Basel, Switzerland and 4UKBB Universitäts-Kinderspital, Oncology/Hematology, Basel, Switzerland
Correspondence:
THOMAS KUEHNE - thomas.kuehne@ukbb.ch
doi:10.3324/haematol.2019.236737
References
1. Cooper N, Bussel J. The pathogenesis of immune thrombocy- topaenic purpura. Br J Haematol. 2006;133(4):364-374.
2. Rodeghiero F. A critical appraisal of the evidence for the role of splenectomy in adults and children with ITP. Br J Haematol. 2018;181(2):183-195.
3. Kühne T, Blanchette V, Buchanan GR, et al. Splenectomy in children with idiopathic thrombocytopenic purpura: a prospective study of 134 children from the Intercontinental Childhood ITP Study Group. Pediatr Blood Cancer. 2007;49(6):829-834.
4. Rodeghiero F, Stasi R, Gernsheimer T, et al. Standardization of termi- nology, definitions and outcome criteria in immune thrombocy- topenic purpura of adults and children: report from an international working group. Blood. 2009;113(11):2386-2393.
5. Rodeghiero F, Ruggeri M. ITP and international guidelines: what do we know, what do we need? Presse Med. 2014;43(4 Pt 2):e61-67.
6. KaatzS,AhmadD,SpyropoulosAC,SchulmanS;theSubcommittee
on Control of Anticoagulation. Definition of clinically relevant non- major bleeding in studies of anticoagulants in atrial fibrillation and venous thromboembolic disease in non-surgical patients: communi- cation from the SSC of the ISTH. J Thromb Haemost. 2015; 13(11):2119-2126.
7. Schulman S, Kearon C; the Subcommittee on Control of Anticoagulation of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Definition of major bleeding in clinical investigations of antihemo- static medicinal products in non-surgical patients: definitions of major bleeding in clinical studies. J Thromb Haemost. 2005;3(4):692- 694.
8. Bisharat N, Omari H, Lavi I, Raz R. Risk of infection and death among post-splenectomy patients. J Infect. 2001;43(3):182-186.
9. Boyle S, White RH, Brunson A, Wun T. Splenectomy and the inci- dence of venous thromboembolism and sepsis in patients with immune thrombocytopenia. Blood. 2013;121(23):4782-4790.
10. Chaturvedi S, Arnold DM, McCrae KR. Splenectomy for immune thrombocytopenia: down but not out. Blood. 2018;131(11):1172- 1182.
11. Kojouri K. Splenectomy for adult patients with idiopathic thrombo- cytopenic purpura: a systematic review to assess long-term platelet count responses, prediction of response, and surgical complications. Blood. 2004;104(9):2623-2634.
12. Guan Y, Wang S, Xue F, et al. Long-term results of splenectomy in adult chronic immune thrombocytopenia. Eur J Haematol. 2017; 98(3):235-241.
13. Heitink-Polle KMJ, Nijsten J, Boonacker CWB, de Haas M, Bruin MCA. Clinical and laboratory predictors of chronic immune throm- bocytopenia in children: a systematic review and meta-analysis. Blood. 2014;124(22):3295-3307.
14. AhmedR,DevasiaAJ,ViswabandyaA,etal.Long-termoutcomefol- lowing splenectomy for chronic and persistent immune thrombocy- topenia (ITP) in adults and children: splenectomy in ITP. Ann Hematol. 2016;95(9):1429-1434.
15. Gliklich R, Dreyer N, Leavy M, eds. Registries for evaluating patient outcomes: a user’s guide. 3rd ed. Rockville (MD); Agency for Healthcare Research and Quality (US); 2014.
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