28th annual san antonio breast cancer symposium december 8-11, 2005; san antonio, texas
DESCRIPTION
28th Annual San Antonio Breast Cancer Symposium December 8-11, 2005; San Antonio, Texas. Angiogenic Therapy for Breast Cancer. Summarized by Kathy Miller, MD Indiana University School of Medicine Indianapolis, Indiana. Supported by an unrestricted educational grant from. - PowerPoint PPT PresentationTRANSCRIPT
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28th Annual San Antonio Breast Cancer SymposiumDecember 8-11, 2005; San Antonio, Texas
Summarized byKathy Miller, MD
Indiana University School of MedicineIndianapolis, Indiana
Angiogenic Therapy for Breast Cancer
Supported by an unrestricted educational grant from
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Stratify:• DFI < 24 months vs > 24 months• < 3 vs > 3 metastatic sites• Adjuvant chemotherapy, yes vs no• ER+ vs ER- vs ER-unknown
RANDOMIZE
Paclitaxel + Bevacizumab
Paclitaxel
E2100: A Randomized Phase 3 Trial of Paclitaxel vs Paclitaxel + Bevacizumab for Advanced Breast Cancer
28-day cycle:
Paclitaxel 90 mg/m2 D1, 8, and 15
Bevacizumab 10 mg/kg D1 and 15
Miller et al. Breast Cancer Res Treat. 2005;95(suppl 1):S6. Abstract 3.
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E2100: Patient Characteristics
Paclitaxel
(n=339)
Pac + Bev
(n=341)
Median age 55 (27-85) 56 (29-84)
DFI < 24 months 42% 42%
> 3 sites 43% 43%
Adjuvant chemotherapy
Taxane
64%
18%
65%
18%
ER+
HER2+
64%
4%
59%
5%
Miller et al. Breast Cancer Res Treat. 2005;95(suppl 1):S6. Abstract 3.
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All patients Measurable Disease0
10
20
30
40
PaclitaxelPac + Bev
Ove
rall
Res
po
nse
Rat
eE2100: Response
339 236341 262
37.7%
16%
29.9%
13.8%
P < .0001P < .0001
Miller et al. Breast Cancer Res Treat. 2005;95(suppl 1):S6. Abstract 3.
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0.0
0.2
0.4
0.6
0.8
1.0
Months
PF
S P
rob
ab
ility
0 6 12 18 24 30
E2100: Progression-Free Survival
HR = 0.51 (0.43-0.62)
Log Rank Test P <0 .0001
Pac + Bev 11.4 months
Paclitaxel 6.11 months
484 events reported
Miller et al. Breast Cancer Res Treat. 2005;95(suppl 1):S6. Abstract 3.
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E2100: Bevacizumab ToxicityNCI-CTC Grade 3 and 4
Paclitaxel(n=332)
Pac + Bev(n=350)
%
Grade 3 Grade 4 Grade 3 Grade 4
Hypertension* 2 0 15 < 1
Thromboembolic 2 2 2 0
Bleeding* 0 0 2 < 1
Proteinuria* 0 0 1 1
Neuropathy 17 1 22 1
Fatigue* 4 < 1 8 < 1
Miller et al. Breast Cancer Res Treat. 2005;95(suppl 1):S6. Abstract 3.
*Toxicities significantly increased with bevacizumab
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E2104 Adjuvant Pilot Trial
REGISTER
Doxorubicin 60 mg/m2 + Cyclophosphamide 600 mg/m2 Bevacizumab 10 mg/kgevery 14 days x 4
Arm A: dose-dense BAC > BT > B
Arm B: dose-dense AC >BT>B
Doxorubicin 60 mg/m2 + Cyclophosphamide 600 mg/m2 every 14 days x 4
Paclitaxel 175 mg/m2 Bevacizumab 10 mg/kg every 14 days x 4
Paclitaxel 175 mg/m2 Bevacizumab 10 mg/kg every 14 days x 4
Bevacizumab 10 mg/kg every 14 days x 18
Bevacizumab 10 mg/kg every 14 days x 22
*Hormone therapy and radiation per standard care
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Randomized Phase 2 Trial of Metronomic Chemotherapy +/- Bevacizumab
R
CM aloneCyclophosphamide 50 mg orally, daily Methotrexate 2.5 mg orally, twice a day, days 1, 2 each week
CM + bevacizumabCyclophosphamide 50 mg orally, dailyMethotrexate 2.5 mg orally, twice a day, days 1, 2 each weekBevacizumab 10 mg/kg intravenously every 14 days
Option of crossoverupon progression
Burstein et al. Breast Cancer Res Treat. 2005;94(suppl 1):S6. Abstract 4.
< 1 prior chemo for MBC
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Phase 2 Metronomic CM vs CM + Bevacizumab: Patient Characteristics
CM alone
N=21
CM + Bevacizumab
N=34
Median age 50.3 (34-59) 51.5 (34-76)
ER+ 14 67% 21 62%
HER2+ 2 10% 0 0%
Visceral Dx 10 48% 24 71%
Adj Chemo 15 72% 30 88%
1 chemo for MBC
10 48% 16 47%
Prior A 16 76% 28 82%
Prior T 11 52% 18 53%
Burstein et al. Breast Cancer Res Treat. 2005;94(suppl 1):S6. Abstract 4.
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Phase 2 Metronomic CM vs CM + Bevacizumab: Best Overall Response
CM alone
N=21
CM + Bevacizumab
N=34
N % 95% CI N % 95% CI
PR 2 10% 1% to 30%
10 29% 15% to 50%
SD 8 38% 14 41%
PD 9 43% 9 26%
N/A 2 10% 1 3%
TTP 2.0 months 5.5 months
Burstein et al. Breast Cancer Res Treat. 2005;94(suppl 1):S6. Abstract 4.