Limited impact of tamoxifen following dose-intensive L-FAC multimodality therapy of breast cancer
2006
10741 Background: Front-line dose-intensive L-FAC has demonstrated a favorable 5-year relapse free survival pattern (ASCO 2004 #739). Tamoxifen was given for 5 years to ER+ patients after L-FAC completion. We evaluated the impact of adding tamoxifen to L-FAC. By design, this pilot study excluded low-risk patients not candidates for chemotherapy. Methods: 109 breast cancer patients were enrolled (4 excluded due to treatment violations) from 6/1989 to 1/2003: 20 Stage I (S), 52 S-II, 22 S-III, for a total of 94 patients. 11 S-IV patients were excluded from survival analysis. Adverse tumor presentations included: ER- 49, PgR- 60, P53+ 24, non-diploid 39, histological grade III 37, CerbB2+ 33. L-FAC included 72 hour (h) iv infusion 400mg/m2/day (d) 5-fluorouracil (F) modulated by iv bolus 200mg/m2/d X3 leucovorin (L), concomitantly with 24h iv d1 600–1000mg/m2 cyclophosphamide (C), 48h iv d2 + d3 60mg/m2 doxorubicin (A). S-I and S-II were given 6 courses and 8 for S-III. Increasing A + C dose level and/or sho...
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