Annals of Oncology Advance Access originally published online on December 22, 2005
Annals of Oncology 2006 17(2):281-285; doi:10.1093/annonc/mdj112
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© 2005 European Society for Medical Oncology
Acute myelogenous leukemia in elderly patients not eligible for intensive chemotherapy: the dark side of the moon
1 Dipartimento di Biotecnologie Cellulari ed Ematologia, Universita ‘La Sapienza’ di Roma, 2 Ematologia, Ospedale S. Giovanni, Roma, 3 Ematologia, Istituto Regina Elena, Roma, Italy
* Correspondence to: Dr R. Latagliata, Department of Cellular Biotechnology and Hematology, University ‘La Sapienza’, Via Benevento 6 – 00161 Rome, Italy. E-mail: rob.lati{at}libero.it
Background: Acute Myelogenous Leukemia (AML) is a common disease in people aged >60 years. About 50% of the patients are not eligible for aggressive chemotherapy (CT) and are only managed with conservative approaches. Results in this subset of patients have not been reported so far.
Patients and methods: We retrospectively evaluated 244 consecutive elderly AML patients (M/F 143/101, median age 72 years, range 60–90) diagnosed at our institution from January 1989 to December 1998 and not eligible for intensive CT. Eighty-nine patients (36.5%) had evolved from previous myelodysplasia (sAML). Fifty-three out of 192 (26.4%) patients with available bone marrow (BM) analysis had oligoblastic leukaemia (blasts <40% and WBC <15x109/l).
Results: Sixty-seven patients (27.5%) were managed with supportive treatment only. One hundred seventy-seven patients (72.5%), in order to control disease, received conservative CT, consisting of Hydroxyurea (HU) (127 patients, 71.7%), Cytarabine and 6-Thioguanine (39 patients, 22%) or low-dose cytarabine (11 patients, 6.3%). Median overall survival was 179 days (1–3278) with 50 patients (20.5%) surviving >12 months. Older age (>75 years), poor WHO PS (>2), lower PLT levels (<50x109/l) and higher absolute peripheral blast count (>5 x 109/l) showed a negative prognostic impact on survival in multivariate analysis.
Conclusions: Our data outline the great heterogeneity of elderly AML patients not eligible for intensive CT. A simple scoring system including easily evaluable parameters, which could distinguish subjects with different prognosis, is proposed. Moreover, randomized studies in order to establish best conservative approaches are warranted.
Key words: acute myelogenous leukemia, conservative treatment, elderly patients, quality of life
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