The FDA on August 30, 2017, granted regular approval to KYMRIAH® (Tisagenlecleucel) for the treatment of patients up to age 25 years with B-cell precursor Acute Lymphoblastic Leukemia (ALL), that is refractory or in second or later relapse. KYMRIAH® is the first Chimeric Antigen Receptor (CAR) T-cell immunotherapy approved by the FDA. A single infusion of KYMRIAH® was highly efficacious, in patients with relapsed and refractory ALL, and was associated with a high and durable Remission Rate. This technology may be applied to other malignancies, as new antigen targets are identified.