%0 Journal Article %T Driving cars to the clinic for solid tumors %J - %D 2018 %R https://doi.org/10.1038/s41434-018-0007-x %X FDA approval of chimeric antigen receptor T cells (CART cells) is the culmination of several decades of technology development and interrogation of the properties of these gene therapies. CART cells exist as personalized ˇ°living drugsˇ± and have demonstrated astounding anti-tumor efficacy in patients with leukemia and lymphoma. However, the future promise of CART efficacy for solid tumors, the greatest unmet burden, is met with a number of challenges that must be surmounted for effective immune responses. In this review, we discuss the next-generation developments of CARs to target solid tumors, including fine-tuned and combinational-targeting receptors. We consider the structural intricacies of the CAR molecules that influence optimal signaling and CART survival, and review pre-clinical cell-intrinsic and cell-extrinsic combinational therapy approaches %U https://www.nature.com/articles/s41434-018-0007-x