This study is being done to see if the investigational drug, anakinra, prevent or reverse the severe side effects caused by CAR-T cell therapy.

Inclusion Criteria:

• Patients (age >/= 18) with a diagnosis of relapsed CD19+ B-cell ALL, MCL, or NHL receiving commercially approved CD19-specific CAR T cells (e.g. tisagenleuleucel, axicabtagene, brexucabtagene autoleucel, etc) are eligible for the study

Exclusion Criteria:

• Patients with uncontrolled systemic fungal and bacterial infections
• Patients with known hypersensitivity to E. coli-derived proteins
• Women of childbearing potential must have a negative serum or urine pregnancy test (women who have undergone surgical sterilization or who have been postmenopausal for at least 2 years are not considered to be of childbearing potential)
• Women who are pregnant or breastfeeding

• Memorial Sloan Kettering Cancer Center supports the international committee of medical journal editors (ICMJE) and the ethical obligation of responsible sharing of data from clinical trials. The protocol summary, a statistical summary, and informed consent form will be made available on clinicaltrials.gov when required as a condition of Federal awards, other agreements supporting the research and/or as otherwise required. Requests for deidentified individual participant data can be made beginning 12 months after publication and for up to 36 months post publication. Deidentified individual participant data reported in the manuscript will be shared under the terms of a Data Use Agreement and may only be used for approved proposals. Requests may be made to: crdatashare@mskcc.org.