Induction therapy with idarubicin alone significantly influences event-free survival duration in patients with newly diagnosed hypergranular acute promyelocytic leukemia: Final results of the GIMEMA randomized study LAP 0389 with 7 years of minimal follow-up

Giuseppe Avvisati, Maria Concetta Petti, Francesco Lo-Coco, Maria Luce Vegna, Sergio Amadori, Michele Baccarani, Nicola Cantore, Eros Di Bona, Felicetto Ferrara, Giuseppe Fioritoni, Eugenio Gallo, Rosangela Invernizzi, Mario Lazzarino, Vincenzo Liso, Guglielmo Mariani, Francesco Ricciuti, Carmine Selleri, Simona Sica, Dino Veneri, Franco Mandelli

Research output: Contribution to journalArticle

Abstract

Shortly before the all-trans retinoic acid (ATRA) era, the GIMEMA cooperative group initiated a randomized study comparing idarubicin (IDA) alone with IDA plus arabinosylcytosine (Ara-C) as induction treatment in patients with newly diagnosed hypergranular acute promyelocytic leukemia (APL). Of the 257 patients evaluable for induction treatment, 131 were randomized to receive IDA alone (arm A) and 126 to receive IDA + Ara-C (arm B). Treatment in arm A consisted of 10 mg/m2 IDA daily for 6 consecutive days, whereas in arm B it consisted of 12 mg/m2 IDA daily for 4 days combined with 200 mg/m2 Ara-C daily in continuous infusion for 7 days. Once in complete remission (CR), patients received 3 consolidation courses of standard chemotherapy, and those still in CR at the end of the consolidation were randomized to receive or not receive 1 mg/kg 6-mercaptopurine daily and intramuscular injections of 0.25 mg/kg methotrexate weekly for 2 years. Overall, 100 (76.3%) patients in arm A and 84 (66.6%) patients in arm B achieved CR (P= NS). Event-free survival (EFS) rates were 35% and 23% for patients in arm A and arm B, respectively (P = .0352). Multivariate analysis revealed that EFS was favorably influenced by induction treatment with IDA alone (P = .0352) and unfavorably influenced by white blood cell (WBC) counts greater than 3000/μL (P = .0001) and increasing age (P = .0251). These results indicate that anthracycline monochemotherapy with IDA favorably influences the EFS of patients with newly diagnosed hypergranular APL.

Original languageEnglish
Pages (from-to)3141-3146
Number of pages6
JournalBlood
Volume100
Issue number9
DOIs
Publication statusPublished - Nov 1 2002

ASJC Scopus subject areas

  • Hematology

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