This study is for patients who have been diagnosed with B-cell acute lymphoblastic leukemia (ALL) or large B-cell lymphomas. The investigational drug in this study is CTL019 (Tisagenlecleucel). The purpose of this study is to provide the investigational drug as a possible cancer treatment that would otherwise be unavailable. Patients can expect to be in this study for up to 3 months and in follow up for 15 years.