Listeriosis in patients with chronic lymphocytic leukemia who were treated with fludarabine and prednisone.
OBJECTIVE: To determine whether therapy with fludarabine plus prednisone in patients with chronic lymphocytic leukemia increases the risk for developing listeriosis. DESIGN: Retrospective cohort study based on hospital surveillance data. SETTING: Referral cancer center. PARTICIPANTS: A total of 795 patients with chronic lymphocytic leukemia who received care at The University of Texas M. D. Anderson Cancer Center between 1980 and 1990. INTERVENTIONS: Patients were treated with fludarabine alone or fludarabine and prednisone. MEASUREMENTS: The listeriosis attack rate was analyzed according to the type of treatment received. RESULTS: Seven of 408 patients in the fludarabine group developed listeriosis (1.7%; 95% Cl, 0.2% to 6%) compared with 0 of 387 patients who received conventional chemotherapy alone (0% to 0.9%; P = 0.015). The 7 patients were among 248 patients who were treated with both fludarabine and prednisone; none of 160 patients treated with fludarabine alone developed listeriosis (P = 0.045 by the Fisher exact test). A dramatic reduction in CD4 counts occurred in patients after fludarabine and prednisone treatment and coincided with the development of listeriosis. CONCLUSION: The administration of fludarabine plus prednisone is associated with an increased incidence of listeriosis in patients with chronic lymphocytic leukemia. The depletion of CD4 cells may underlie the pathogenesis.[1]References
- Listeriosis in patients with chronic lymphocytic leukemia who were treated with fludarabine and prednisone. Anaissie, E., Kontoyiannis, D.P., Kantarjian, H., Elting, L., Robertson, L.E., Keating, M. Ann. Intern. Med. (1992) [Pubmed]
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