Cytoreductive treatment in patients with CALR-mutated essential thrombocythaemia: a study comparing indications and efficacy among genotypes from the Spanish Registry of Essential Thrombocythaemia
In: British journal of haematologyReferences, Jg. 192 (2020-05-22), Heft 6
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Zugriff:
The present study assessed the criteria for initiating cytoreduction and response to conventional therapies in 1446 patients with essential thrombocythemia (ET), 267 (17%) of which wereCALR-mutated. In low risk patients, time from diagnosis to cytoreduction was shorter inCALR-positive than in the other genotypes (2 center dot 8, 3 center dot 2, 7 center dot 4 and 12 center dot 5 years forCALR,MPL,JAK2V617F and TN, respectively,P < 0 center dot 0001). A total of 1104 (76%) patients received cytoreductive treatment with hydroxycarbamide (HC) (n = 977), anagrelide (n = 113), or others (n = 14). The estimated cumulative rates of complete haematological response (CR) at 12 months were 40 % and 67% inCALRandJAK2V617F genotypes, respectively. Median time to CR was 192 days forJAK2V617F, 343 for TN, 433 forMPL, and 705 forCALRgenotypes (P < 0 center dot 0001). Duration of CR was shorter inCALR-mutated ET than in the remaining patients (P = 0 center dot 003). InCALR-positive patients, HC and anagrelide had similar efficacy in terms of response rates and duration.CALR-mutated patients developed resistance/intolerance to HC more frequently (5%, 23%, 27% and 15% forJAK2V617F,CALR,MPLand TN, respectively;P < 0 center dot 0001). In conclusion, conventional cytoreductive agents are less effective inCALR-mutated ET, highlighting the need for new treatment modalities and redefinition of haematologic targets for patients with this genotype.
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Cytoreductive treatment in patients with CALR-mutated essential thrombocythaemia: a study comparing indications and efficacy among genotypes from the Spanish Registry of Essential Thrombocythaemia
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Autor/in / Beteiligte Person: | Alvarez-Larran, A ; Angona, A ; Andrade-Campos, M ; Noya, M ; Gomez-Casares, M ; Cuevas, B ; Caballero, G ; Garcia-Hernandez, C ; Garcia-Gutierrez, V ; Palomino, A ; Ferrer-Marin, F ; Mata-Vazquez, M ; Moreto, A ; Magro, E ; Murillo, I ; Alonso-Dominguez, J ; Guerra, J ; Guerrero, L ; Raya, J ; Perez-Encinas, M ; Carreno-Tarragona, G ; Fox, L ; Pastor-Galan, I ; Bellosillo, B ; Hernandez-Boluda, J ; MPN Spanish Grp, GEMFIN |
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Zeitschrift: | British journal of haematologyReferences, Jg. 192 (2020-05-22), Heft 6 |
Veröffentlichung: | 2020 |
Medientyp: | unknown |
ISSN: | 1365-2141 (print) ; 0007-1048 (print) |
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