Abstract
To evaluate the activity and toxicity of the drug combination cisplatin, fluorouracil by continuous infusion, and high-dose oral leucovorin calcium (PFL) as induction chemotherapy in patients with advanced and untreated squamous cell head and neck (SCHN) cancer. Nonrandomized, prospective trial. Referral center (comprehensive cancer center). Twenty-two patients with stage III (n = 7) and IV (n = 15) M0 SCHN cancer of the larynx (n = 13), hypopharynx (n = 7), and oropharynx (n = 2) whose standard treatment would have required total laryngectomy. Three cycles of PFL were administered prior to local-regional therapy (concomitant cisplatin and radiation and/or neck dissection, with total laryngectomy reserved for nonresponse or relapse). Chemotherapy included cisplatin (100 mg/m2) on day 1 by short intravenous infusion; fluorouracil (800 mg/m2) on days 1 through 5 by continuous infusion; and leucovorin (100 mg) every 4 hours by mouth for 30 doses. The PFL combination was administered every 21 days. Clinical response to chemotherapy and observed toxic effects during chemotherapy. Five patients were inevaluable for response, with three early deaths (infection in two and sudden death in one), one cerebrovascular accident, and one patient declining further chemotherapy. Of the remaining 17 patients, 10 had a major response to chemotherapy, but in only five patients (29%) was this complete (95% confidence interval, 8% to 51%). Other significant toxic effects included grade 3 to 4 mucositis in eight patients and grade 3 to 4 neutropenia in 10. While PFL is active in patients with SCHN cancer, we were unable to reproduce the high complete response rates reported by other centers. Its use can be associated with significant toxic effects. We do not recommend the use of PFL for the treatment of patients with SCHN cancer outside the context of a clinical trial until there is further critical assessment of its activity and toxicity.
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