Study of PD-1 Inhibitors After CD30.CAR T Cell Therapy in Relapsed/Refractory Hodgkin Lymphoma

Inclusion Criteria for Arm 1: Relapse After Prior CD 30 CAR-T Therapy * Written informed consent obtained to participate in the study and HIPAA authorization for release of personal health information. * Age ≥18 years at the time of consent. * Subject is planned to start on standard of care anti-PD-1 therapy per community standards of medical care by their treating oncologist. * Subject has a diagnosis of relapsed/refractory classical Hodgkin lymphoma after at least three lines of prior therapy with clinical progression after either ATLCAR.CD30 and/or ATLCAR.CD30.CCR4. The CAR-T cell product may be either the UNC, Baylor or Tessa product. * Subjects with prior allogeneic stem cell transplant will be eligible but will be counseled during consent regarding possible increased risk of graft versus host disease with anti-PD-1 therapy after allogeneic stem cell transplant. * Subjects must have previously been treated with anti-PD-1 therapy (any anti-PD-1 therapy either standard of care or investigational) prior to receiving autologous CAR-T-cell therapy. * Subject is willing to provide blood samples that are clinically necessary during anti-PD-1 therapy administered per community standards of medical care. Inclusion Criteria for Arm 2: Relapse with no Prior CD 30 CAR-T Therapy * Written informed consent obtained to participate in the study and HIPAA authorization for release of personal health information. * Age ≥18 years at the time of consent. * Subject is planned to start on …