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Canaani J, Nagar M, Heering G, Gefen C, Yerushalmi R, Shem-Tov N, Volchek Y, Merkel D, Avigdor A, Shimoni A, Amariglio N, Rechavi G, Nagler A. Reassessing the role of high dose cytarabine and mitoxantrone in relapsed/refractory acute myeloid leukemia. Oncotarget 2020; 11:2233-2245. [PMID: 32577167 PMCID: PMC7289527 DOI: 10.18632/oncotarget.27618] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 05/14/2020] [Indexed: 01/04/2023] Open
Abstract
A substantial segment of patients with acute myeloid leukemia (AML) will relapse following an initial response to induction therapy or will prove to be primary refractory. High-dose cytarabine and mitoxantrone (HiDAC/MITO) is an established salvage therapy for these patients. We studied all adult patients with relapsed/refractory (R/R) AML who were treated with HiDAC/MITO in our center between the years 2008-2017. To determine whether responding patients harbored a unique molecular signature, we performed targeted next-generation sequencing (NGS) on a subset of patients. The study cohort consisted of 172 patients with a median age of 54 years (range 18–77). The composite complete remission rate was 58%; 11 patients (6%) died during salvage therapy. Median survival was 11.4 months with a 1-year survival rate of 48%. In multivariate analysis favorable risk cytogenetics [Odds ratio (OR)=0.34, confidence interval (CI) 95%, 0.17–0.68; P = 0.002], and de-novo AML (OR = 0.4, CI 95%, 0.16–0.98; P = 0.047) were independently associated with a favorable response. Patients who attained a complete remission had a median survival of 43.7 months compared with 5.2 months for refractory patients (p < 0.0001). Neither the FLT3-ITD and NPM1 mutational status nor the indication for salvage therapy significantly impacted on the response to HiDAC/MITO salvage. NGS analysis identified 20 different mutations across the myeloid gene spectrum with a distinct TP53 signature detected in non-responding patients. HiDAC/MITO is an effective salvage regimen in R/R AML, however patients with adverse cytogenetics or secondary disease may not benefit as much from this approach.
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Affiliation(s)
- Jonathan Canaani
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Meital Nagar
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Gabriel Heering
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Chen Gefen
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Ronit Yerushalmi
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Noga Shem-Tov
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Yulia Volchek
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Drorit Merkel
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Abraham Avigdor
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Avichai Shimoni
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Ninette Amariglio
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Gidi Rechavi
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Arnon Nagler
- Hematology Division, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
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