Phase 1 dose escalation study of docetaxel with filgrastim support in patients with advanced solid tumors.
Docetaxel has demonstrated activity in a broad range of solid tumors. Phase I trials have shown 100 mg/m(2) every 21 d to be the recommended dose. This phase I trial was designed to define the dose-limiting toxicities (DLTs) and maximum tolerated dose (MTD) of docetaxel with granulocyte colony-stimulating factor (G-CSF) support in patients with advanced solid tumors. Eligible patients had advanced malignancies and up to two prior chemotherapy regimens, ECOG PS = 0 1, adequate organ function, and gave written, informed consent. Docetaxel was escalated in cohorts of patients starting at 100 mg/m(2) on a 21-d schedule. Prophylactic G-CSF was administered on d 3 10. The DLT was defined as grade IV neutropenia >4 d, febrile neutropenia, grade IV thrombocytopenia, any grade III nonhematologic toxicity, or the inability to receive cycle 2 because of ongoing toxicity. Twenty-three patients were enrolled at doses up to 145 mg/m(2). The median age was 59 yr and the median number of prior chemotherapy regimens was 1. No DLT was observed at 100 mg/m(2), and 2 of 11 patients at 120 mg/m(2) experienced DLT (neutropenic fever and stomatitis). At 145 mg/m(2), one of eight patients had DLT (fatigue). Two of eight patients at 145 mg/m(2) had brief grade IV neutropenia (without fever), and none had grade III-IV thrombocytopenia or anemia. The docetaxel dose can be safely escalated to 145 mg/m(2) every 21 d with GCSF support, a 45% increase above the standard recommended phase II dose. Further studies will clarify the role of dose-intensified docetaxel.
Masters
Gregory A
GA
Feinberg School of Medicine of Northwestern University, Evanston Northwestern Healthcare, Evanston, IL, USA. g-masters@northwestern.edu
Brockstein
Bruce E
BE
Mani
Sridhar
S
Ratain
Mark J
MJ
D000328:Adult; D000368:Aged; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000633:toxicity*; D017024:Chemotherapy, Adjuvant; D000077143:Docetaxel; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D000069585:Filgrastim; D016179:Granulocyte Colony-Stimulating Factor / Q000008:administration & dosage; D006801:Humans; D008297:Male; D020714:Maximum Tolerated Dose; D008875:Middle Aged; D009369:Neoplasms / Q000188:drug therapy*; D009503:Neutropenia / Q000139:chemically induced; D017239:Paclitaxel / Q000008:administration & dosage / Q000031:analogs & derivatives*; D011994:Recombinant Proteins; D016879:Salvage Therapy; D043823:Taxoids; D016896:Treatment Outcome
D000972:Antineoplastic Agents, Phytogenic; D011994:Recombinant Proteins; D043823:Taxoids; D016179:Granulocyte Colony-Stimulating Factor; D000077143:Docetaxel; D017239:Paclitaxel; D000069585:Filgrastim