Cost-Benefit Analysis of Interferon Alfa-2b in Treatment of Hairy Cell Leukemia

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Abstract
The clinical benefits as well as the cost benefits of use of recombinant interferon (IFN) alfa-2b instead of conventional chemotherapy (primarily chlorambucil) for progressive hairy cell leukemia were assessed retrospectively on the basis of 12 months of clinical data from 128 patients treated with WN alfa-2b. Data from 71 matched historical control patients who had received conventional treatment were used for survival analysis. Hematologic response (reversal of cytopenias) was achieved by 18% of the control patients versus 73% of the WN-treated patients. This response was associated with virtual elimination of the need for transfusions and splenectomy as well as dramatic decreases In the frequency of fatal infections (22.5% vs. 1.6%) and the 12-month mortality rate (28% vs. 3.1%). Direct costs per patient per year for medical care (transfusions, antibiotic treatment, splenec Receivedtomy, and chemotherapy) of those receiving WN alfa-2b were 2.8-fold lower than costs for medical care of control patients ($5,027 vs. $14,046). Indirect costs, which reflect the present value of future earnings lost due to premature death, were 13.3-fold lower for WN-treated patients than for control patients ($4,771 vs. $63,507). Our analysis demonstrates that IFN alfa-2b offers substantial clinical and cost advantages to patients with hairy cell leukemia and that the introduction of this therapy using novel biotechnology furthers the health care community's commitment to cost containment. [J Natl Cancer Inst 81:594–602, 1989]

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