“…Prolongation of survival with these agents comes with the cost of increased risk of bacterial and fungal infections. Among the TKIs, ibrutinib, tofacitinib, and dasatinib carry a black box warning for opportunistic infections including pneumocystis, aspergillosis, and reactivation of tuberculosis, varicella-zoster and cytomegalovirus infections [7][8][9][10][11][12][13][14][15][16]. Sunitinib specifically targets members of the split-kinase domain family of receptor tyrosine kinases (RTKs) including the vascular endothelial growth factor receptors type1 and 2 (VEGFR 1,2), platelet-derived growth factor receptors (PDGFR α,β), fibroblast growth factor receptor (FGFR1), FMS-related tyrosine kinase (FLT3), stem cell factor receptor (c-KIT), rearranged during transfection (RET) kinase and colony-stimulating factor 1 receptor, resulting in direct and indirect B and T cell dysfunction at various levels [1,2].…”