Autonomous Proliferation of Leukemic Cells in Vitro as a Determinant of Prognosis in Adult Acute Myeloid Leukemia

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Abstract
A characteristic of acute myeloid leukemia is the frequent ability of the leukemic cells to sustain their own proliferation in vitro. To determine the clinical importance of this property, we measured the uptake of tritiated thymidine by leukemic cells in serum-free and cytokine-free cultures as a means of determining the rate of spontaneous proliferation in 114 patients with newly diagnosed acute myeloid leukemia. Proliferation was then classified according to three quantitative levels of activity and related to overall survival and to treatment outcome (the response to treatment, the actuarial probability of relapse, and disease-free survival) in 91 patients who were treated with chemotherapy to induce remission.

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