 Inclusion Criteria: - Subject previously randomized to BSC in protocol 20020408 and subsequently determined to have progressive disease - ECOG performance status of 0, 1 or 2 - Adequate hematologic, renal and hepatic function Exclusion Criteria: - Myocardial infarction in time interval between completing 20020408 and enrollment in study - History or evidence of interstitial pneumonitis or pulmonary fibrosis - Prior anti-tumor therapies including prior experimental agents or approved anti-tumor small molecules and biologics during the time interval between completing 20020408 protocol and enrollment in this study - Use of systemic chemotherapy or radiotherapy during the time interval between completing 20020408 protocol and enrollment in this study 