PMID: 7581094Jun 1, 1995Paper

Phase I multicenter trial of interleukin 6 therapy after autologous bone marrow transplantation in advanced breast cancer

Bone Marrow Transplantation
H M LazarusR E Isaacs

Abstract

Our purpose was to determine the maximum tolerated dosage of rhIL-6 after high-dose cytotoxic chemotherapy and autologous BMT in patients with advanced breast cancer. Twenty patients (median age 43.5 years) received either CY and thiotepa (n = 3) or CY, thiotepa and carboplatin (n = 17) for 4 days. Unpurged autologous BM was reinfused 72 h later. Daily rhIL-6 therapy began the day of marrow infusion and continued until recovery of neutrophils (> or = 1.5 x 10(9)/l) and platelets (> or = 50 x 10(9)/l) or for a maximum of 28 days at a dosage of 0.3 microgram/kg/day (n = 7), 1 microgram/kg/day (n = 6) or 3 micrograms/kg/day (n = 7). Two of the initial 4 patients given rhIL-6 at 0.3 mu/kg i.v. experienced grade 4 hyperbilirubinemia, so subsequent patients received s.c. rhIL-6. Most toxicities attributable to rhIL-6 were reversible or mild constitutional symptoms, but dose-limiting grade 4 hyperbilirubinemia also occurred in 3 of the 7 patients receiving the 3 micrograms/kg dose. At the 0.3 and 1 microgram/kg/day doses, 8 of 13 patients completed the study vs. only 2 of 7 at the 3 micrograms/kg/day dose. During rhIL-6 treatment, neutrophil recovery (> or = 500 x 10(6)/l) occurred in 12 patients and platelet recovery (> or = 20 x 10(...Continue Reading

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