Abstract:
:These ECOG trials have demonstrated that progressive increments in the intensity of post-remission therapy result in improving long-term, disease-free survival in adults with AML. The median duration of disease-free survival and long-term outcome from different post-remission therapies are summarized in Table 4. [table: see text] Despite the suggestive evidence of the ordered increment in value of intensive consolidation therapy, allogeneic and autologous bone marrow transplantation, it remains to be proved that the differences observed in our preceding studies are statistically significant and clinically meaningful. These remaining questions led to the current ECOG study, EST 3489, a randomized intergroup study conducted with members of the Southwest Oncology Group. The study includes all patients with de novo AML up to age 55; the schema is shown in Figure 3. Induction therapy consists of idarubicin plus cytarabine instead of DAT. A modified short course of this induction therapy is repeated after CR. Patients who have a histocompatible sibling are offered allogeneic bone marrow transplantation. The remaining patients are randomized to receive either autologous bone marrow transplantation or a single course of high-dose cytarabine. Autologous bone marrow transplantation utilizes the previously described high-dose busulfan and cyclophosphamide regimen plus 4-HC purging of the bone marrow. The dosage of cytarabine in the intensive consolidation arm is 3 gm/M2/day IV on days 1-6. The results of this study should determine the relative merits of these different approaches to post-remission therapy. [table: see text] As mentioned earlier, demonstration of improved CR rates is limited by the morbidity and mortality from the myelosuppression that results from induction therapy. This is especially marked for older patients with AML. In patients, ages 55-70 years old, the ECOG is conducting a randomized trial (EST 1490) of conventional induction therapy +/- GM-CSF to determine if accelerated neutrophil recovery can reduce the mortality of induction therapy and thereby increase the remission rate. It may be that the application of GM-CSF and other colony-stimulating factors can increase the CR rate for all patients, increasing the number of patients potentially eligible for cure by post-remission therapy.
journal_name
Leukemiajournal_title
Leukemiaauthors
Cassileth PA,Andersen JW,Bennett JM,Harrington DP,Hines JD,Lazarus HM,Mazza JJ,McGlave PP,O'Connell MJ,Paietta Esubject
Has Abstract,Author List Incompletepub_date
1992-01-01 00:00:00pages
116-9eissn
0887-6924issn
1476-5551journal_volume
6 Suppl 2pub_type
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