Abstract
Peripheral T cell lymphomas (PTCL) are rare in children and adolescents, and data about outcome and treatment results are scarce. The present study is a joint, international, retrospective analysis of 143 reported cases of non-anaplastic PTCL in patients <19 years of age, with a focus on treatment and outcome features. One hundred forty-three patients, between 0.3 and 18.7 years old, diagnosed between 2000 and 2015 were included in the study. PTCL not otherwise specified was the largest subgroup, followed by extranodal NK/T cell lymphoma, hepatosplenic T cell lymphoma (HS TCL), and subcutaneous panniculitis-like T cell lymphoma (SP TCL). Probability of overall survival (pOS) at 5 years for the whole group was 0.56 ± 0.05, and probability of event-free survival was (pEFS) 0.45 ± 0.05. Patients with SP TCL had a good outcome with 5-year pOS of 0.78 ± 0.1 while patients with HS TCL were reported with 5-year pOS of only 0.13 ± 0.12. Twenty-five percent of the patients were reported to have a pre-existing condition, and this group had a dismal outcome with 5-year pOS of 0.29 ± 0.09. The distribution of non-anaplastic PTCL subtypes in pediatric and adolescent patients differs from what is reported in adult patients. Overall outcome depends on the subtype with some doing better than others. Pre-existing conditions are frequent and associated with poor outcomes. There is a clear need for subtype-based treatment recommendations for children and adolescents with PTCL.
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Acknowledgments
We would like to thank all participating institutions and physicians for their support of this study. The EIC-NHL and i-BFM paper was written on behalf of the Berlin-Frankfurt-Münster (BFM) Study Group (Austria, Germany, Switzerland, Czech Republic), Associazione Italiana Ematologica Oncologia Pediatrica (AIEOP), United Kingdom Children’s Cancer and Leukemia Study group (CCLG), Nordic Association of Pediatric Hematology and Oncology (NOPHO) (Norway, Sweden, Denmark, Finland and Iceland), Belgian Society of Pediatric Hematology and Oncology, Dutch Childhood Oncology Group (DCOG), Hungarian Pediatric Oncology Network, Slovakian Pediatric Association (Section of Pediatric Hemato-Oncology), Polish Society of Pediatric Oncology and Hematology, Japanese Pediatric Leukemia/Lymphoma Study Group (JPLSG), Hong Kong Pediatric Hematology and Oncology Group (HKPHOSG), and single institutions from Canada (Toronto), Belarus (Minsk), and Russia (Moscow).
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DW, LB, AA, UK, and KM designed and planned the study. KM, UK, and AC were in charge of data pooling, data checking, and statistical analysis. All authors were principal or co-investigators in their study groups and institutions, coordinating national trials in their countries, providing study material, and recruiting patients. KM, UK, AA, and UA wrote the manuscript, and all authors read and approved the final version of the manuscript.
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Mellgren, K., Attarbaschi, A., Abla, O. et al. Non-anaplastic peripheral T cell lymphoma in children and adolescents—an international review of 143 cases. Ann Hematol 95, 1295–1305 (2016). https://doi.org/10.1007/s00277-016-2722-y
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DOI: https://doi.org/10.1007/s00277-016-2722-y