A phase II trial of sorafenib in metastatic melanoma with tissue correlates. oleh Patrick A Ott, Anne Hamilton, Christina Min, Sara Safarzadeh-Amiri, Lauren Goldberg, Joanne Yoon, Herman Yee, Michael Buckley, Paul J Christos, John J Wright, David Polsky, Iman Osman, Leonard Liebes, Anna C Pavlick