I. To obtain the serum expression levels of surrogate markers of brivanib effects including angiogenic factors (vascular endothelial growth factor [VEGF] and basic fibroblast growth factor [bFGF]) and markers of endothelial damage (E-selectin, vascular cell adhesion molecule 1 [VCAM-1], and (intercellular adhesion molecule 1 [ICAM-1]). (exploratory) II. To determine whether these marker expression levels alone or in combination are associated with response, PFS, or overall survival. (exploratory)