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A correction has been published: N Engl J Med 1994;331(3):211.

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Volume 330:1260-1266 May 5, 1994 Number 18
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c-erbB-2 Expression and Response to Adjuvant Therapy in Women with Node-Positive Early Breast Cancer
Hyman B. Muss, Ann D. Thor, Donald A. Berry, Timothy Kute, Edison T. Liu, Frederick Koerner, Constance T. Cirrincione, Daniel R. Budman, William C. Wood, Maurice Barcos, and I. Craig Henderson

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ABSTRACT

Background The role of molecular markers in predicting the response to treatment of breast cancer is poorly defined. The Cancer and Leukemia Group B (CALGB) conducted a randomized adjuvant-chemotherapy trial (CALGB 8541) comparing three doses (high, moderate, and low) of cyclophosphamide, doxorubicin, and fluorouracil in 1572 women with node-positive breast cancer. This study (CALGB 8869) was designed to determine whether the DNA index, the S-phase fraction, c-erbB-2 expression, or p53 accumulation could be used as a marker to identify a subgroup of patients more likely than others to benefit from high doses of chemotherapy.

Methods Tissue blocks were obtained from 442 patients randomly selected from the larger CALGB trial. Paraffin sections from the primary lesions were analyzed for DNA content, S-phase fraction, c-erbB-2 expression, and p53 accumulation.

Results Patients randomly assigned to the high-dose regimen of adjuvant chemotherapy had significantly longer disease-free and overall survival if their tumors had c-erbB-2 overexpression. No further information was gained by adding the data on S-phase fraction or p53 accumulation to the analysis. There was no clear evidence of a dose-response effect in patients with minimal or no c-erbB-2 expression.

Conclusions There is a significant dose-response effect of adjuvant chemotherapy with cyclophosphamide, doxorubicin, and fluorouracil in patients with overexpression of c-erbB-2 but not in patients with no c-erbB-2 expression or minimal c-erbB-2 expression. Overexpression of c-erbB-2 may be a useful marker to identify the patients who are most likely to benefit from high doses of adjuvant chemotherapy.


Source Information

From the Bowman Gray School of Medicine, Winston-Salem, N.C. (H.B.M., T.K.); Massachusetts General Hospital, Boston (A.D.T., F.K.); the Statistical Office of the Cancer and Leukemia Group B, Durham, N.C. (D.A.B., C.T.C.); the Department of Medicine, University of North Carolina School of Medicine, Chapel Hill (E.T.L.); North Shore University Hospital (New York Hospital), New York (D.R.B.); Emory University, Atlanta (W.C.W.); the Department of Medicine, Roswell Park Memorial Institute, Buffalo, N.Y. (M.B.); and the University of California, San Francisco (I.C.H.).

Address reprint requests to Dr. Thor at the Department of Pathology, University of Vermont School of Medicine, Medical Alumni Bldg., Burlington, VT 05405.

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Related Letters:

Adjuvant Therapy for Breast Cancer
Muller H.-J., Gleiter C. H., Gundert-Remy U., Melnychuk D., Panasci L. C., Coppin C. M.L., Goldie J. H., Sauter C., Garey J., Lehrer S., Farkas D. H., Umek R. M., Morrison B. W., Atkins C. D., Wood W. C., Budman D., Henderson I. C., Muss H. B., Thor A. D., Berry D. A., Goldhirsch A., Gelber R. D.
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N Engl J Med 1994; 331:741-746, Sep 15, 1994. Correspondence

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