Midostaurin plus daunorubicin or idarubicin for young and older adults with FLT3 -mutated AML : a phase 3b trial

Jorge Sierra, Pau Montesinos, Xavier Thomas, Laimonas Griskevicius, Thomas Cluzeau, Denis Caillot, Ollivier Legrand, Clara Minotti, Mario Luppi, Firas Farkas, Bourras-Rezki Bengoudifa, Geralyn Gilotti, Sejla Hodzic, Alessandro Rambaldi, Adriano Venditti

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Resumen

The pivotal RATIFY study demonstrated midostaurin (50 mg twice daily) with standard chemotherapy significantly reduced mortality in adult patients (<60 years) with newly diagnosed (ND) FLT3 mut acute myeloid leukemia (AML). Considering that AML often present in older patients who show poor response to chemotherapy, this open-label, multicenter phase 3b trial was designed to further assess safety and efficacy of midostaurin plus chemotherapy in induction, consolidation, and maintenance monotherapy in young (≤60 years) and older (>60 years) patients with FLT3 mut ND-AML. Compared with RATIFY, this study extended midostaurin treatment from 14 days to 21 days, substituted anthracyclines (idarubicin or daunorubicin), and introduced variation in standard combination chemotherapy dosing ("7+3" or "5+2" in more fragile patients). Total 301 patients (47.2% >60 years and 82.7% with FLT3-ITD mut ) of median age 59 years entered induction phase. Overall, 295 patients (98.0%) had at least 1 adverse event (AE), including 254 patients (84.4%) with grade ≥3 AE. The grade ≥3 serious AEs occurred in 134 patients. No difference was seen in AE frequency between age groups, but grade ≥3AE frequency was higher in older patients. Overall, complete remission (CR) rate including incomplete hematologic recovery (CR + CRi) (80.7% [95% confidence interval, 75.74-84.98]) was comparable between age groups (≤60 years [83.5%]; >60 to ≤70 years [82.5%]; in patients >70 years [64.1%]) and the type of anthracycline used in induction. CR + CRi rate was lower in males (76.4%) than females (84.4%). Overall, the safety and efficacy of midostaurin remains consistent with previous findings, regardless of age, sex, or induction regimen. The trial is registered at as #.
Idioma originalInglés
Páginas (desde-hasta)6441-6450
Número de páginas10
PublicaciónBlood advances
Volumen7
DOI
EstadoPublicada - 2023

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