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Purpose

The primary objectives of this study are: - To confirm the safety and tolerability of magrolimab monotherapy in a relapsed/refractory (R/R) acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) population, and of magrolimab in combination with azacitidine in previously untreated participants with AML or MDS and participants with R/R AML and MDS - To evaluate the efficacy of magrolimab monotherapy in R/R AML/MDS, and of magrolimab in combination with azacitidine in previously untreated participants with AML/MDS, or R/R AML/MDS as measured by complete remission (CR) rate for participants with AML and higher-risk MDS, and duration of complete response for participants with AML and higher-risk MDS, and duration of CR for participants with AML and higher-risk MDS - To evaluate the safety, tolerability, and efficacy of magrolimab monotherapy or combination with azacitidine in low-risk MDS participants as measured by red blood cell (RBC) transfusion independence rate

Condition

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Meets the criteria below for the appropriate cohort: 1. Relapsed/Refractory Cohorts: Pathologically confirmed relapsed or refractory (primary refractory and/or relapsed refractory) AML or confirmed intermediate, high, or very high risk MDS that is relapsed, refractory or intolerant to conventional therapy 2. Treatment-naive/ Unfit Cohorts: Previously untreated individuals with histological confirmation of AML who are ineligible for treatment with a standard cytarabine and anthracycline induction regimen; or previously untreated individuals with intermediate, high, or very high risk MDS. Prior and concurrent therapy with hydroxyurea, oral etoposide, erythroid and/or myeloid growth factors is allowed. 3. Rollover Cohort: Individuals on active magrolimab therapy on the Phase 1 AML (SCI-CD47-002; NCT02678338) trial who are deriving clinical benefit by Investigator assessment 4. RBC transfusion dependent low risk MDS cohort: Transfusion-dependent MDS individuals who are very low or low risk by IPSS-R with previous treatment with an erythroid stimulating agent or lenalidomide. - White blood cell (WBC) count ≤ 20 x 10^3/mcL - Adequate performance status and hematological, liver, and kidney function

Exclusion Criteria

  • Prior treatment with CD47 or signal regulatory protein alpha (SIRPα) targeting agents (with exception of magrolimab for individuals in the Rollover cohort). - Treatment-naive/Unfit Cohorts Only: Any prior anti-leukemic therapy (excluding hydroxyurea or oral etoposide), prior treatment with hypomethylating agents and/or low dose cytarabine. - Acute promyelocytic leukemia. - Known inherited or acquired bleeding disorders. - Previous allogeneic hematopoietic stem cell transplant within 6 months prior to enrollment, active graft versus host disease (GVHD), or requiring transplant-related immunosuppression. - Clinical suspicion of active central nervous system (CNS) involvement by leukemia - Known active or chronic hepatitis B or C infection or HIV - Pregnancy or active breastfeeding Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Study Design

Phase
Phase 1
Study Type
Interventional
Allocation
Non-Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
R/R Safety Cohort 		Participants will receive 1 mg/kg magrolimab twice weekly for Cycle 1 Week 1 (Day 1 and 4); 15 mg/kg on Cycle 1 Day 8; 30 mg/kg on Cycle 1 Days 11 and 15; and 30 mg/kg weekly thereafter starting Cycle 3 up to end of the study.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
Experimental
R/R Expansion Cohort: 		Participants will receive 1 mg/kg magrolimab twice weekly for Cycle 1 Week 1 (Day 1 and Day 4); 15 mg/kg on Cycle 1 Day 8; 30 mg/kg on Cycle 1 Days 11 and 15; 30 mg/kg weekly on Cycle 1 Day 22 through end of Cycle 2, then 30 mg/kg every 2 weeks starting Cycle 3 up to end of the study + azacitidine 75 mg/m^2 on Days 1 to 7 of each cycle.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
  • Drug: Azacitidine
    Administered according to region-specific drug labeling either subcutaneously or intravenously
    Other names:
    • VIDAZA
Experimental
R/R MDS Magrolimab Monotherapy Cohort 		Participants will receive 1 mg/kg magrolimab on Cycle 1 (Days 1, 4); 15 mg/kg on Cycle 1 Day 8; 30 mg/kg on Cycle 1 Day 11, 15, 22, weekly on Cycle 2, and then biweekly starting Cycle 3 up to end of the study.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
Experimental
Treatment-naive Unfit (TNU) Dose Evaluation Cohort 		Participants will receive 1 mg/kg magrolimab on Cycle 1 (Days 1, 4); 15 mg/kg on Cycle 1 Day 8; 30 mg/kg on Cycle 1 Day 11, 15, 22, and then weekly starting Cycle 2 up to end of the study + azacitidine 75 mg/m^2 on Days 1 to 7 of each cycle.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
  • Drug: Azacitidine
    Administered according to region-specific drug labeling either subcutaneously or intravenously
    Other names:
    • VIDAZA
Experimental
Treatment-naive Unfit (TNU) Dose Expansion Cohort 		Participants will receive 1 mg/kg magrolimab twice weekly for Cycle 1; 15 mg/kg weekly for Cycle 1 Day 8; 30 mg/kg weekly through end of cycle 2; and then 30 mg/kg every 2 weeks starting Cycle 3 up to end of the study + azacitidine 75 mg/m^2 on Days 1 to 7 of each cycle.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
  • Drug: Azacitidine
    Administered according to region-specific drug labeling either subcutaneously or intravenously
    Other names:
    • VIDAZA
Experimental
RBC transfusion-dependent low-risk MDS, Safety Run-in Phase 		Participants will receive 1 mg/kg magrolimab on Cycle 1 Day 1; 30 mg/kg on Cycle 1 Days 8, 15, and 22; and 60 mg/kg every 4 weeks starting on Cycle 2 Day 1 and thereafter up to end of the study. For participants who do not respond after Cycle 2, azacitidine 75 mg/m^2 may be added on subsequent cycles (ie starting at Cycle 3) on Days 1 to 5 of each cycle.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
  • Drug: Azacitidine
    Administered according to region-specific drug labeling either subcutaneously or intravenously
    Other names:
    • VIDAZA
Experimental
RBC transfusion-dependent low-risk MDS, Expansion Phase 		Participants will receive 1 mg/kg magrolimab on Cycle 1 Day 1; at 30 mg/kg on Cycle 1 Days 8, 15, and 22; and 60 mg/kg every 4 starting on Cycle 2 Day 1 and thereafter up to end of the study + azacitidine 75 mg/m^2 on Days 1 to 5 of each cycle.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4
  • Drug: Azacitidine
    Administered according to region-specific drug labeling either subcutaneously or intravenously
    Other names:
    • VIDAZA
Experimental
Rollover 		Participants on a previous AML Phase 1 trial (SCI-CD47-002; NCT02678338) with clinical benefit on magrolimab treatment will receive the same dose level (0.1 mg/kg up to 30.0mg/kg based on the cohort to which the participant was assigned) twice weekly or may transition to once weekly dosing at the discretion of the Investigator and approval from Gilead.
  • Drug: Magrolimab
    Administered intravenously
    Other names:
    • Hu5F9-G4

More Details

Status
Terminated
Sponsor
Gilead Sciences

Study Contact

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.