Journal of Clinical Oncology, Vol 5, 278-285, Copyright © 1987 by American Society of Clinical Oncology
Adjuvant methotrexate escalated to toxicity for resectable stage III and IV squamous head and neck carcinomas--a prospective, randomized study
RE Rentschler, DW Wilbur, GH Petti, GD Chonkich, DA Hilliard, ES Camacho and RB Thorpe
To determine if adjuvant methotrexate (MTX), escalated weekly to toxicity,
could improve disease-free survival (DFS) and overall survival by
preventing recurrent disease, 60 patients with potentially resectable stage
III or IV squamous head and neck carcinomas were stratified by primary
site, stage, and nutritional status, then randomized by pairs to receive or
not receive adjuvant MTX. All received standard surgery and postoperative
radiation therapy. Five patients were taken off study because of
unresectability at the time of surgery, leaving 55 evaluable patients.
There were no statistically significant imbalances in known prognostic
factors between the two treatment arms. MTX was begun at 40 mg/m2 and
escalated 10 mg/m2 weekly (four doses preoperatively; four doses
postoperatively, preradiation therapy; eight doses postradiation therapy)
to mucosal or hematologic toxicity. The median peak MTX dose achieved was
80 mg/m2. Although three patients were hospitalized with MTX toxicity, none
died of MTX toxicity. No patient receiving MTX had disease progression
during treatment, and there was no increase in postoperative complications.
Thirty-two patients died (median survival, 19 months); 23 patients are
alive with median follow-up of 43 months. There was no statistically
significant difference in actuarial DFS (P = 1.0) or overall survival (P =
.61). Although patients on the MTX arm appeared to have less local and
regional recurrences at first recurrence (thus more distant metastases),
this did not reach statistical significance (P = .06). There was no
significant difference between the sites of recurrence at death or last
follow-up (P = .38).