Commentary on “Vascular endothelial growth factor-targeted therapy for the treatment of adult metastatic Xp11.2 translocation renal cell carcinoma.” Choueiri TK, Lim ZD, Hirsch, MS, Tamboli P, Jonasch E, McDermott DF, Dal Cin P, Corn P, Vaishampayan U, Heng DY, Tannir NM, Dana-Farber Cancer Institute, Boston, MA