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Blood, 1 October 2004, Vol. 104, No. 7, pp. 1989-1994. Prepublished online as a Blood First Edition Paper on June 17, 2004; DOI 10.1182/blood-2004-02-0628.
CLINICAL OBSERVATIONS, INTERVENTIONS, AND THERAPEUTIC TRIALS Responsiveness to G-CSF before leukopenia predicts defense to infection in high-dose chemotherapy recipientsFrom the Medizinische Klinik-Innenstadt, Klinikum der Universität München; Medizinische Hochschule Hannover; Medizinische Klinik, Klinikum der Universität Tübingen; and WISP Research Institute, Langenfeld, Germany.
An active assessment of the host capacity to prevent infection during myelosuppression should be beneficial in patients receiving high-dose chemotherapy. A single dose of granulocyte colony-stimulating factor (G-CSF) (5 µg/kg) was given to 57 patients with multiple myeloma early after the completion of 85 high-dose chemotherapy (melphalan 200 mg/m2) courses. This provoked a highly variable white blood cell (WBC) peak after 12 to 14 hours. The median WBC count was 21 000/µL (range, 6400-60 600/µL) after a first high-dose therapy (n = 50) and 13 500/µL (range, 4700-24 800/µL) after a second high-dose therapy (n = 35). The responsiveness to single G-CSF was associated with the risk of infection during subsequent cytopenia (P = .003). This association was significant after adjustment for neutropenia duration. Notably, the result of testing G-CSF responsiveness was opportunely available before the onset of leukopenia, and G-CSF responsiveness was more informative than neutropenia duration regarding the risk of infection. Furthermore, there was an association between the responsiveness to G-CSF and stem cell engraftment (P < .005), which remained significant after adjustment for the number of transplanted CD34+ cells. Our results show for the first time that G-CSF potentially could be used for an early in vivo assessment of defense to infection in recipients of high-dose chemotherapy.
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| Copyright © 2004 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||