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Splenic irradiation before hematopoietic stem cell transplantation for chronic myeloid leukemia: long-term follow-up of a prospective randomized study

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Abstract

In the context of discussions on the reproducibility of clinical studies, we reanalyzed a prospective randomized study on the role of splenic irradiation as adjunct to the conditioning for hematopoietic stem cell transplantation (HSCT) for chronic myeloid leukemia (CML). Between 1986 and 1989, a total of 229 patients with CML were randomized; of these, 225 (98 %; 112 with, 113 without splenic irradiation) could be identified in the database and their survival updated. Results confirmed the early findings with no significant differences in all measured endpoints (overall survival at 25 years: 42.7 %, 32.0–52.4 % vs 52.9 %, 43.2–62.6 %; p = 0.355, log rank test). Additional splenic irradiation failed to reduce relapse incidence. It did not increase non-relapse mortality nor the risk of late secondary malignancies. Comforting are the long-term results from this predefined consecutive cohort of patients: more than 60 % were alive at plus 25 years when they were transplanted with a low European Society for Blood and Marrow Transplantation (EBMT) risk sore. This needs to be considered today when treatment options are discussed for patients who failed initial tyrosine kinase inhibitor therapy and have an available low risk HLA-identical donor.

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Acknowledgments

The authors would like to thank all participating patients and transplant teams.

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Correspondence to Helen Baldomero.

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There are no conflicts of interest to declare.

Funding

The study was funded by the Chronic Malignancies Working Party of the European Society for Blood and Marrow Transplantation EBMT. EBMT is supported by grants from the corporate members: Amgen Europe, ViroPharma Europe, Celegene International SARL, Genzyme Europe B.V., Gilead Sciences Europe Ltd., MiltenylBiotec GmbH, Schering-Plough International Inc., Bristol Myers Squibb, CaridiaBCT Europe NV, Cephalon Europe, F. Hoffmann-La Roche Ltd, Fresenius Biotech GmbH, Therakos Inc., Alexion Europe, Chugai Sanofi – Aventis, Merck Sharp and Dohme, Novartis, Pfizer, Pierre Fabre Médicament.

Appendix

Appendix

List of participating centers with past (ref Gratwohl et al. 1996) and current principal investigators.

Basel: Kantonsspital (today University Hospital; B. Speck, A. Gratwohl, J. Passweg); Berlin: University Hospital Rudolf Virchow (W. Siegert, R. Arnold); Birmingham: Queen Elizabeth Hospital (I.M. Franklin, C. Craddock); Brussels: Insitut J. Bordet (L. Debusscher, D. Bron), Hôpital Universitaire St. Luc (A. Ferrant, X. Poiré); Caen: Centre Hospitalier (X.Troussard, O. Reman); Copenhagen: University Hospital (N. Jacobsen, H. Sengeloev); Córdoba: Hospital Reina Sofia (A. Torrez-Gomez, P. Gomez Garcia); Créteil: HôpitalMondor (J.-P. Vernant, C. Cordonnier); Dublin: St. James’ Hospital (S.R. McCann, P. Browne); Edinburgh: Royal Infirmary (A.C. Parker, A.J.M. Broom); Genova: Ospedale San Martino (A. Bacigalupo, F. Frassoni, A. Bacigalupo); Hannover: Medizinische Hochschule (H. Link, A. Ganser); Helsinki: University of Helsinki Hospital (T. Ruutu, L. Volin); Huddinge: Karolinska Institute (B. Lönnqvist, G. Gahrton, O. Ringden, P. Ljungman); Innsbruck: University Hospital (D. Niederwieser, G. Gastl); Kiel: Christian Albrechts University Hospital (N. Schmitz, M. Gramatzki); Leiden: University Hospital (F. Zwaan, W. Fibbe, J.H. Veelken); Lisbon: Ins. Portuges Oncologia (M. Abecasis, M. Abecasis); London: Harley Street clinic (P.J. Gravett), Royal Marsden Hospital (R. Powles, G. Helenglass, M. Potter), Royal Free Hospital (H.G. Prentice, S. McKinnon); Munich: Ludwig Maximilian University Hospital (H.J. Kolb, W.Hiddemann, J. Tischer); Nijmegen: Sint Radboud Ziekenhuis (T. deWitte, T. Schattenberg, N. Schaap); Paris: Centre Hospitalier St. Antoine (N.C. Gorin, L.Fouillard, M. Mohty); Pessac: Centre Hospitalier (J. Reiffers, N. Millpied); Riyadh: King Faisal Hospital (P. Ernst, M. Aljurf); Rome: UniversitadegliStudi di Roma La Sapienza (W. Arcese, P. de Fabritiis, R. Foa); Santander: Hospital Nacional “Marques de Valdecilla” (A. Iriondo, C. Richard Espiga); Vienna: Allgemeines Krankenhaus der Stadt Wien (W. Hinterberger, P. Kahls)

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Gratwohl, A., Iacobelli, S., Bootsman, N. et al. Splenic irradiation before hematopoietic stem cell transplantation for chronic myeloid leukemia: long-term follow-up of a prospective randomized study. Ann Hematol 95, 967–972 (2016). https://doi.org/10.1007/s00277-016-2638-6

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