Journal of Clinical Oncology, Vol 8, 2032-2039, Copyright © 1990 by American Society of Clinical Oncology
Adjuvant cyclophosphamide, methotrexate, and fluorouracil in patients with axillary node-positive breast cancer: an update of the Guy's/Manchester trial
MA Richards, SM O'Reilly, A Howell, WD George, IS Fentiman, MA Chaudary, D Crowther and RD Rubens
International Cancer Research Fund Clinical Oncology Unit, Guy's Hospital, London, England.
Between 1976 and 1985, 391 patients (202 premenopausal, 189 postmenopausal)
with operable breast cancer and positive axillary lymph nodes were
randomized after total mastectomy and axillary clearance to receive
cyclophosphamide, methotrexate, and fluorouracil (CMF) (n = 193) or no
adjuvant therapy (n = 198). After a median follow-up of 8 years, both
relapse-free survival (RFS) and survival (S) were significantly prolonged
in premenopausal patients receiving CMF (RFS, P less than .001; S, P =
.003). Treatment with CMF resulted in a significant improvement in RFS in
premenopausal patients both with steroid receptor-positive and steroid
receptor-negative tumors and also in subgroups of premenopausal patients
defined by the number of axillary nodes involved. Premenopausal patients
who developed permanent amenorrhea following CMF had a significantly better
RFS than those who continued to menstruate. Induction of amenorrhea
following CMF was related to age, with almost all patients over 40 years
becoming amenorrheic. For patients less than or equal to 40 years,
development of amenorrhea following CMF did not influence outcome. No
difference was detected between control and CMF groups (RFS, P = .9; S, P =
.9) in postmenopausal patients nor in any subgroup of these patients. The
results of this trial of the efficacy of CMF for improving RFS and S have
strengthened with longer follow-up.

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