89Zr-DFO-REGN3767 in PET Scans in People With Diffuse Large B Cell Lymphoma (DLBCL)

Inclusion Criteria

• •A patient must be eligible for DLBCL expansion cohort 9 in study 17-421 and, in addition, meet the following criteria to be eligible for inclusion in the study:
• •Measurable disease by Lugano criteria, with at least one lesion outside of the liver
• •Patients must have eGFR \>50 mL/min/1.73m2.
• •Women who are pregnant, breastfeeding \*Postmenopausal women must be amenorrhoeic for at least 12 months in order not to be considered of childbearing potential. Pregnancy testing and contraception are not required for women with documented hysterectomy or tubal ligation. Pregnancy testing and screening will be performed per MSK and Department of Radiology standard pregnancy screening guidelines.