Combining CTLA-4 and angiopoietin-2 blockade in patients with advanced melanoma: a phase I trial ================================================================================================ * Patrick A Ott * Matthew Nazzaro * Kathleen L Pfaff * Evisa Gjini * Kristen D Felt * Jacquelyn O Wolff * Elizabeth I Buchbinder * Rizwan Haq * Ryan J Sullivan * Donald P Lawrence * David F McDermott * Mariano Severgnini * Anita Giobbie-Hurder * Scott J Rodig * F Stephen Hodi