A vasculature-targeting regimen of preoperative docetaxel with or without bevacizumab for locally advanced breast cancer: impact on angiogenic biomarkers.
OBJECTIVE
Taxanes have effects on angiogenesis causing difficulties in separating biological effects of chemotherapy from those due to angiogenesis inhibitors. This randomized phase II trial was designed to evaluate the additional biomarker effect on angiogenesis when bevacizumab is added to docetaxel.


METHODS
Patients with inoperable breast cancer were randomized to either 2 cycles of preoperative docetaxel (D) 35 mg/m(2) i.v. weekly for 6 weeks, followed by a 2-week break; or docetaxel with bevacizumab 10 mg/kg i.v. every other week for a total of 16 weeks (DB). Plasma and serum markers of endothelial damage, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), and tumor microvessel density were assessed before treatment and at the end of each preoperative cycle.


RESULTS
Forty-nine patients were randomized (DB, 24; D, 25). There was no difference in overall clinical response, progression-free survival, or overall survival. Vascular endothelial growth factor increased during treatment; more so with DB (P < 0.0001). Vascular cell adhesion molecule-1 (VCAM-1) also increased (P < 0.0001); more so with DB (P = 0.069). Intercellular adhesion molecule increased (P = 0.018) and E-selectin decreased (P = 0.006) overall. Baseline levels of VCAM-1 and E-selectin correlated with clinical response by univariate analysis. DCE-MRI showed a greater decrease in tumor perfusion calculated by initial area under the curve for the first 90 seconds in DB (P = 0.024). DCE-MRI also showed an overall decrease in tumor volume (P = 0.012).


CONCLUSIONS
Bevacizumab plus docetaxel caused a greater increase in vascular endothelial growth factor and VCAM-1, and a greater reduction in tumor perfusion by DCE-MRI compared with docetaxel. Clinical outcomes of inoperable breast cancer were predicted by changes in VCAM-1 and E-selectin.
Baar
Joseph
J
Developmental Therapeutics Program, University Hospitals Case Medical Center, Cleveland, OH, USA.
Silverman
Paula
P
Lyons
Janice
J
Fu
Pingfu
P
Abdul-Karim
Fadi
F
Ziats
Nicholas
N
Wasman
Jay
J
Hartman
Paul
P
Jesberger
John
J
Dumadag
Leda
L
Hohler
Erin
E
Leeming
Rosemary
R
Shenk
Robert
R
Chen
Helen
H
McCrae
Keith
K
Dowlati
Afshin
A
Remick
Scot C
SC
Overmoyer
Beth
B
D015746:Abdominal Pain / Q000139:chemically induced; D000328:Adult; D000368:Aged; D000740:Anemia / Q000139:chemically induced; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000009:adverse effects; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D000068258:Bevacizumab; D014408:Biomarkers, Tumor / Q000097:blood; D001943:Breast Neoplasms / Q000097:blood / Q000098:blood supply / Q000188:drug therapy*; D000077143:Docetaxel; D019040:E-Selectin / Q000097:blood; D005221:Fatigue / Q000139:chemically induced; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D007970:Leukopenia / Q000139:chemically induced; D016015:Logistic Models; D008279:Magnetic Resonance Imaging / Q000379:methods; D055806:Microvessels / Q000187:drug effects* / Q000473:pathology; D008875:Middle Aged; D015999:Multivariate Analysis; D011300:Preoperative Care / Q000379:methods*; D013280:Stomatitis / Q000139:chemically induced; D043823:Taxoids / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D019010:Vascular Cell Adhesion Molecule-1 / Q000097:blood; D042461:Vascular Endothelial Growth Factor A / Q000097:blood
D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000970:Antineoplastic Agents; D014408:Biomarkers, Tumor; D019040:E-Selectin; D043823:Taxoids; D019010:Vascular Cell Adhesion Molecule-1; D042461:Vascular Endothelial Growth Factor A; D000077143:Docetaxel; D000068258:Bevacizumab