Imatinib in myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRB in chronic or blast phase
We evaluated clinical characteristics and outcome on imatinib of 22 patients with myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRB. Median age was 49 years (range 20-80), 91% were male. Fifteen different PDGFRB fusion genes were identified. Eosinophilia was absent in 4/19 (21...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
19 July 2017
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| In: |
Annals of hematology
Year: 2017, Jahrgang: 96, Heft: 9, Pages: 1463-1470 |
| ISSN: | 1432-0584 |
| DOI: | 10.1007/s00277-017-3067-x |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s00277-017-3067-x Verlag, Volltext: http://link.springer.com/article/10.1007/s00277-017-3067-x 
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| Verfasserangaben: | Mohamad Jawhar, Nicole Naumann, Juliana Schwaab, Herrad Baurmann, Jochen Casper, Tu-Anh Dang, Lutz Dietze, Konstanze Döhner, Annette Hänel, Bernd Lathan, Hartmut Link, Sina Lotfi, Ole Maywald, Stephan Mielke, Lothar Müller, Uwe Platzbecker, Otto Prümmer, Henrike Thomssen, Karin Töpelt, Jens Panse, Tom Vieler, Wolf-Karsten Hofmann, Torsten Haferlach, Claudia Haferlach, Alice Fabarius, Andreas Hochhaus, Nicholas C. P. Cross, Andreas Reiter, Georgia Metzgeroth |
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| 245 | 1 | 0 | |a Imatinib in myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRB in chronic or blast phase |c Mohamad Jawhar, Nicole Naumann, Juliana Schwaab, Herrad Baurmann, Jochen Casper, Tu-Anh Dang, Lutz Dietze, Konstanze Döhner, Annette Hänel, Bernd Lathan, Hartmut Link, Sina Lotfi, Ole Maywald, Stephan Mielke, Lothar Müller, Uwe Platzbecker, Otto Prümmer, Henrike Thomssen, Karin Töpelt, Jens Panse, Tom Vieler, Wolf-Karsten Hofmann, Torsten Haferlach, Claudia Haferlach, Alice Fabarius, Andreas Hochhaus, Nicholas C. P. Cross, Andreas Reiter, Georgia Metzgeroth |
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| 520 | |a We evaluated clinical characteristics and outcome on imatinib of 22 patients with myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRB. Median age was 49 years (range 20-80), 91% were male. Fifteen different PDGFRB fusion genes were identified. Eosinophilia was absent in 4/19 (21%) cases and only 11/19 (58%) cases had eosinophils ≥1.5×109/L. On imatinib, 17/17 (100%) patients in chronic phase achieved complete hematologic remission after median 2 months (range 0-13). Complete cytogenetic remission and/or complete molecular remission by RT-PCR were achieved in 12/13 (92%) and 12/14 patients (86%) after median 10 (range 3-34) and 19 months (range 7-110), respectively. In patients with blast phase (myeloid, n = 2; lymphoid, n = 3), treatment included combinations of imatinib (n = 5), intensive chemotherapy (n = 3), and/or allogeneic stem cell transplantation (n = 3). All 3 transplanted patients (complex karyotype, n = 2) experienced early relapse. Initially, patients were treated with imatinib 400 mg/day (n = 15) or 100 mg/day (n = 7), the dose was reduced from 400 mg/day to 100 mg/day during follow-up in 9 patients. After a median treatment of 71 months (range 1-135), the 5-year survival rate was 83%; 4/22 (18%) patients died (chronic phase; n = 2; blast phase, n = 2) due to progression (n = 3) or comorbidity while in remission (n = 1). Of note, 3/4 patients had a complex karyotype. In summary, the most important characteristics of myeloid/lymphoid neoplasms with rearrangement of PDGFRB include (a) male predominance, (b) frequent lack of hypereosinophilia, (c) presentation in chronic or blast phase, (d) rapid responses and long-term remission on low-dose imatinib, and (e) possible adverse prognostic impact of a complex karyotype. | ||
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