86.6 0.88 (0.77,1.01)
Time to distant metastasis3 ITT 257 92.4 298 90.1 0.85 (0.72, 1.00)
Adjuvant chemotherapy ITT 84 - 109 - 0.75 (0.56-1.00)
No chemotherapy ITT 173 - 189 - 0.90 (0.73,1.11)
Distant DFS4 ITT 385 89.0 432 87.1 0.87 (0.76,1.00)
Contralateral breast cancer ITT 34 99.2 44 98.6 0.76 (0.49, 1.19)
Overall survival ITT 303 91.8 343 90.9 0.87 (0.75, 1.02)
Censor 303 91.8 338 90.1 0.82 (0.70, 0.96)
0 positive nodes ITT 107 95.2 121 94.8 0.90 (0.69.1.16)
1-3 positive nodes ITT 99 90.8 114 90.6 0.81(0.62,1.06)
>=4 positive nodes ITT 92 80.2 104 73.6 0.86 (0.65, 1.14)
Adjuvant chemotherapy ITT 76 91.5 96 88.4 0.79 (0.58, 1.06)
No chemotherapy ITT 227 91.9 247 91.8 0.91 (0.76, 1.08)
Definition of:
1 Disease-free survival: Interval from randomization to earliest event of invasive loco-regional recurrence, distant metastasis, invasive contralateral breast cancer, or death without a prior event
2 Systemic disease-free survival: Interval from randomization to invasive regional recurrence, distant metastasis, or death without a prior cancer event
3 Time to distant metastasis: Interval from randomization to distant metastasis
4 Distant disease-free survival: Interval from randomization to earlier event of relapse in a distant site or death from any cause
ITT analysis ignores selective crossover in tamoxifen arms
Censored analysis censors follow-up at the date of selective crossover in 632 patients who crossed to Femara or another aromatase inhibitor after the tamoxifen arms were unblinded in 2005
Figure 1 shows the Kaplan-Meier curves for Disease-Free Survival Monotherapy Analysis
Figure 1 Disease-Free Survival (Median follow-up 73 months, ITT Approach)
DFS events defined as loco-regional recurrence, distant metastasis, invasive contralateral breast cancer, or death from any cause (i.e., definition excludes second non-breast primary cancers).
The medians of overall survival for both arms were not reached for the Monotherapy Arms Analysis (MAA). There was no statistically significant difference in overall survival. The hazard ratio for survival in the Femara arm compared to the tamoxifen arm was 0.87, with 95% CI (0.75, 1.02) (see Table 6).
There were no significant differences in DFS, OS, SDFS, and Distant DFS from switch in the Sequential Treatments Analysis with respect to either monotherapy (e.g., [Tamoxifen 2 years followed by] Femara 3 years versus tamoxifen beyond 2 years, DFS HR 0.89; 97.5% CI 0.68, 1.15 and [Femara 2 years followed by] tamoxifen 3 years versus Femara beyond 2 years, DFS HR 0.93; 97.5% CI 0.71, 1.22).
There were no significant differences in DFS, OS, SDFS, and Distant DFS from randomization in the Sequential Treatments Analyses.
14.2 Extended Adjuvant Treatment of Early Breast Cancer, Median Treatment Duration of 24 MonthsA double-blind, randomized, placebo-controlled trial of Femara was performed in over 5,100 postmenopausal women with receptor-positive or unknown primary breast cancer who were disease free after 5 years of adjuvant treatment with tamoxifen.
The planned duration of trea |
