The principal aim of the study is to determine the objective response rate that offers the second-line treatment with pazopanib in patients with carcinoma of advanced renal cells that have progressed or that have not tolerated the first line of treatment with a Tyrosine Kinase Inhibitor. The secondary aims are to determine the overall survival and the treatment safety profile for these patients in second-line treatment with pazopanib. The exploratory aim is to determine the correlation between biomarkers in patient blood and tumor samples, and the clinical results obtained with pazopanib.