A Study of Anakinra to Prevent or Treat Severe Side Effects for Patients Receiving 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