Study of Magrolimab and Pembrolizumab in Relapsed or Refractory Classic Hodgkin Lymphoma

The purpose of this study is to test the safety and efficacy of magrolimab in combination with pembrolizumab in patients with Hodgkin lymphoma.

Primary Objectives:

- To assess the complete remission (CR) rate of magrolimab in combination with pembrolizumab in adult subjects with relapsed or refractory cHL

Secondary Objectives:

* To assess the safety and tolerability of magrolimab in combination with pembrolizumab in adult subjects with relapsed or refractory cHL
* To assess the overall response rate (ORR)

Eligibility Criteria:
Inclusion Criteria:

* Age ≥ 18 years
* Eastern Cooperative Oncology Group (ECOG) performance status 0 to 1
* Biopsy proven relapsed or refractory cHL
* Prior treatment with at least two systemic therapies
* Metabolically active measurable disease by PET imaging per the 2014 Lugano criteria
* Hemoglobin ≥ 9.5 g/dL
* Absolute neutrophil count ≥ 1,000 cells/μL without G-CSF support within 3 weeks prior to enrollment
* Platelet count ≥ 75,000 cells/μL
* Creatinine clearance \> 40 mL/min per the Cockroft-Gault formula
* Total bilirubin \< 1.5 x upper limit of normal (ULN) (or \< 3.0 x ULN and primarily unconjugated in subjects with a history of Gilbert's syndrome)
* Negative urine or serum pregnancy test within 30 days of enrollment and within 72 hours before the first administration of magrolimab for women of childbearing potential
* Women of childbearing potential must be willing to use at least 1 highly effective method of contraception during the study and continue for 4 months after the last dose of magrolimab
* Male subjects who are sexually active with a woman of childbearing potential and who have not had vasectomies must be willing to use a barrier method of contraception during the study and for 4 months after the last dose of magrolimab
* Ability to understand and the willingness to sign the written IRB approved informed consent document
* Must be willing and able to comply with the clinic visits and procedures outlined in the study protocol

Exclusion Criteria:

* Prior treatment with a PD-1 inhibitor within 3 months prior to enrollment
* Prior treatment with antibodies targeting CD47 or SIRPα2
* Prior allogeneic hematopoietic cell transplantation
* Systemic autoimmune disorder on chronic immunosuppression (defined as ≥ 10 mg of prednisone daily)
* RBC transfusion dependence, defined as requiring more than 2 units of RBCs during the 4-week period prior to screening
* History of hemolytic anemia, autoimmune thrombocytopenia, or Evan's syndrome within the last 3 months
* Second malignancy not in complete remission for at least 1 year, excluding fully resected non melanoma skin cancer or localized prostate cancer
* Women who are pregnant or breast feeding
* HIV or hepatitis B or C infection with active viral replication by PCR
* Second malignancy not in complete remission for at least 1 year, excluding fully resected non-melanoma skin cancer or localized prostate cancer
* Active cardiac disease including unstable angina, decompensated congestive heart failure, or severe uncontrolled conduction abnormalities
* History of non-infectious pneumonitis requiring corticosteroids or current pneumonitis
* Significant medical conditions, as assessed by the investigators and IND holder, that would substantially increase the risk benefit ratio of participating in the study
* History of psychiatric illness or substance abuse likely to interfere with ability to comply with protocol requirements
* Received a live or live attenuated vaccine within 30 days before the first dose of study intervention
* Received any anti-cancer therapy within 2 weeks prior to the first dose of study intervention