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Purpose

The purpose of this clinical trial is to learn how the experimental medicine maplirpacept (PF-07901801) affects people with various types of blood cancers: - relapsed or refractory (R/R) lymphoma - multiple myeloma - newly diagnosed acute myeloid leukemia (AML). This trial will be conducted in the outpatient setting in 2 parts, phase 1a and phase 1b. You may only participate in one part of the study. During phase 1a of this study, we will explore how much maplirpacept (PF-07901801), when used by itself, can be safely used. If you have lymphoma, the study medicine maplirpacept (PF-07901801) will be given by infusion through a vein once a week or once every 2 weeks or every 3 weeks as determined by your doctor. Following your first dose, you will be expected to come back twice more the first week. From week 2, you will have weekly visits for blood tests, questions about your medications, any side effects, or illnesses you may have experienced and your cancer response. After you have completed 21 days (for every week dosing) or 42 days (for every 2- or 3-weeks dosing), your doctor will discuss whether you should stop study treatment or continue. If you continue, you will be expected to come back weekly for blood tests, vital signs, a brief physical exam, asked about any side effects or illnesses you may have experienced and medications you may be taking. The dosing schedule you are assigned to will continue until your disease has worsened, significant side effects occur or other reasons that lead you and your doctor to decide treatment may be stopped. To be eligible for the first part of the study you must be 18 years or older, your disease has worsened after receiving other medicines approved for blood cancer, no other treatment options exist for you, a sample of your tissue for exploratory research which can be taken from tissue already obtained or if necessary, a new sample of your tissue will be taken so your disease may be seen and measured on routine tests/scans. If you have had radiation therapy or received any anticancer medication within 14 days before the planned start of study treatment your doctor will let you know if you are eligible to participate in the study. If you have had major surgery within 30 days before the planned start of study treatment you may not be eligible to participate. The phase 1a part of the study may last up to 51/2 years. How long you participate in this study depends on side effects you may have to the study drug. It also depends on how your cancer responds to the study drug. Therefore, you may remain in the study as long as you and your study doctor think you may benefit. However, you are free to stop taking part in this study at any time and for any reason. During phase 1b part of this study, we will explore how much maplirpacept (PF-07901801), when used with other anticancer medicine(s), can be safe and reduce cancer growth. In the phase 1b part of this study, you will receive maplirpacept (PF-07901801) and other anticancer medicine(s). Which medicine combination you will receive depends on the types of cancer under treatment. Your treatment experiences will be examined to determine if maplirpacept (PF-07901801) when given with other anticancer medicine(s), is safe and can reduce cancer growth. To be eligible for the second part of the study you may have newly diagnosed Acute Myelocytic Leukemia with or without a genetic mutation or you have Multiple Myeloma or Diffuse Large B Cell Lymphoma, and your disease has worsened. The Phase 1b part of this study may last as long as you and your study doctor think you may benefit which could be up to approximately 31/2 years. How long you participate in this study depends on side effects you may have to the study drug. It also depends on how your cancer responds to the study drug. Therefore, you may remain in the study as long as you and your study doctor think you may benefit. However, you are free to stop taking part in this study at any time and for any reason.

Conditions

Eligibility

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

Inclusion Criteria

(Phase 1a and Phase 1b, all Cohorts): 1. Available fresh or archived tumor tissue. 2. Eastern Cooperative Oncology Group (ECOG) performance status score of 0, 1, or 2. 3. Adequate coagulation function. 4. Adequate hepatic function. 5. Adequate hematologic status. 6. Adequate renal function. 7. Recovery from non-hematopoietic toxicities of previous anticancer drugs or radiotherapy or previous surgeries to ≤Grade 1 (or to baseline grade if condition was pre-existing). Key Inclusion Criteria (Phase 1a): Histologically confirmed relapsed/refractory, transfusion- independent lymphoma (Hodgkin or non-Hodgkin) per the 2014 Lugano classification. Key Inclusion Criteria (Phase 1b Cohort A1 and A2): Histologically confirmed, newly diagnosed TP53-mutated Acute Myeloid Leukemia (AML). Key Inclusion Criteria (Phase 1b Cohort B1 and B2): Histologically confirmed, newly diagnosed TP53-wildtype AML, elderly or unfit for more aggressive treatment. Key Inclusion Criteria (Phase 1b Cohorts C1, C2, C3 and E1, E2, F1, F2, F3): Histologically documented relapsed/refractory Multiple Myeloma (MM). Key Inclusion Criteria (Phase 1b Cohort D1 and D2): Pathologically confirmed relapsed/refractory diffuse large B-cell lymphoma (DLBCL)

Exclusion Criteria

(Phase 1a and Phase 1b, all Cohorts): 1. Known, current central nervous system disease involvement. 2. Use of any investigational agent or any anticancer drug within 14 days before planned start of study treatment (within 4 weeks for antibody-based therapies and within 8 weeks for cell-based therapies). 3. Subjects who have undergone radiation therapy within 14 days of study treatment administration. 4. Hematopoietic stem cell transplant within 90 days before the planned start of study treatment or subjects with active graft-vs-host disease, with the exception of Grade 1 skin involvement. 5. Major surgery within 30 days before planned start of study treatment.

Study Design

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

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
maplirpacept (PF-07901801) Monotherapy 		In the phase 1a dose- escalation part for single-agent maplirpacept (PF-07901801), participants with Relapsing or Refractory (R/R) lymphoma will be enrolled in sequential dose cohorts to receive maplirpacept (PF-07901801) QW to characterize safety, tolerability, and PK; to determine the Maximum Tolerated Dose (MTD) or P1b Starting Dose (a dose lower than or equal to the single-agent MTD), and to gain preliminary evidence of antitumor activity. In addition, participants with R/R Lymphoma may also be enrolled in a cohort to receive maplirpacept (PF-07901801) Q2W and a cohort to receive maplirpacept (PF-07901801) Q3W to characterize safety, tolerability, and PK; to determine the MTD; and to gain preliminary evidence of antitumor activity.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
Experimental
Cohort A: maplirpacept (PF-07901801) + Azacitidine 		Cohort A1: participants with newly diagnosed TP53-mutated Acute Myelocytic Leukemia (AML) will be treated with maplirpacept (PF-07901801) QW + azacitidine. Cohort A2: participants with newly diagnosed TP53-mutated AML will be treated with maplirpacept (PF-07901801) QW + azacitidine.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
  • Drug: Azacitidine
    intravenous (IV) or subcutaneous (SC) daily for 7 days, repeated every 4 weeks
    Other names:
    • VIDAZA
Experimental
Cohort B: maplirpacept (PF-07901801) + Azacitidine and Venetoclax 		Cohort B1: elderly or unfit participants with newly diagnosed TP53-wildtype AML will be treated with maplirpacept (PF-07901801) QW + azacitidine and venetoclax Cohort B2: elderly or unfit participants with newly diagnosed TP53-wildtype AML will be treated with maplirpacept (PF-07901801) QW + azacitidine and venetoclax.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
  • Drug: Azacitidine
    intravenous (IV) or subcutaneous (SC) daily for 7 days, repeated every 4 weeks
    Other names:
    • VIDAZA
  • Drug: Venetoclax
    orally daily for each day of each cycle (first 7 doses taken in clinic). The ramp-up and target dose of venetoclax will be adjusted per the package insert in subjects who are taking concomitant moderate or strong CYP3A4 inhibitors or posaconazole
    Other names:
    • VENCLEXTA
Experimental
Cohort D1 and D2: maplirpacept (PF-07901801) + an anti-CD20 targeting agent 		Cohort D1: participants with Relapsing or Recurrent (R/R) CD20+ Diffuse Large B Cell Lymphoma (DLBCL) will be treated with maplirpacept (PF-07901801) QW, then an increased dose Q3W + an anti-CD20 targeting agent. Cohort D2: participants with R/R CD20+ DLBCL will be treated with maplirpacept (PF-07901801) dosed QW for 4 weeks, then an increased dose Q3W + an anti-CD20 targeting agent.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
  • Drug: Anti-CD20 Targeting agent
    Days 1,8,15, and 22 of the first 28-day cycle and then on Day 1 of subsequent 21-day cycles. The anti-CD20 targeting agent will be administered for a total of eight doses, and then Cohort F1, F2 and F3: TTI-622 + isatuximab, carfilzomib and dexamethasone Cohort C1, C2 and C3: TTI-622 + Carfilzomib and Dexamethasone will be continued as single-agent therapy.
    Other names:
    • Ruxience or Rituxan
Experimental
Cohort E1 and E2: single agent maplirpacept (PF-07901801) 		Cohort E1: participants with Relapsing or Recurrent (R/R) Multiple Myeloma (MM) will be treated with single agent maplirpacept (PF-07901801) QW. Cohort E2: participants with R/R MM will be treated with single agent maplirpacept (PF-07901801) increased dose QW.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
Experimental
Cohort F1, F2 and F3: maplirpacept (PF-07901801) + isatuximab, carfilzomib and dexamethasone 		Cohort F1: participants with Relapsing or Recurrent (R/R) Multiple Myeloma (MM) will be treated with increasing doses of maplirpacept (PF-07901801) + isatuximab, carfilzomib and dexamethasone. Cohort F2: participants with R/R MM will be treated with maplirpacept (PF-07901801) QW + isatuximab, carfilzomib and dexamethasone. Cohort F3: participants with R/R MM will be treated with maplirpacept (PF-07901801) increased dose QW + isatuximab, carfilzomib and dexamethasone.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
  • Drug: Carfilzomib
    Days 1, 8, and 15 of 28-day cycles; starting dose IV given on Cycle (C) 1 Day (D) 1, and if tolerated, then increased dose via IV given starting on C1D8 and subsequent doses thereafter.
    Other names:
    • KYPROLIS
  • Drug: Dexamethasone
    starting dose via IV on Days 1, 8, 15, and increased dose via IV on 28-day cycles
  • Drug: Isatuximab
    F1: IV dose C0D1, C0D8, C0D15 and C0D22 (lead in phase);weekly during Cycle 1; Cycle 2 and beyond will be administered on Days 1 and 15 (Q2W). F2 and F3: IV dose C0D1 and C0D8 (lead in phase); C1D1, C1D8, C1D15 and C1D22; Cycle 2 and beyond will be administered on days 1 and 15 (Q2W). Carfilzomib: IV dose on days 1 and 2 of cycle 1; then increased IV dose on days 8, 9, 15, and 16 of cycle 1; cycle 2 and beyond: increased IV dose on days 1, 2, 8, 9, 15, and 16. Dexamethasone IV or PO on days 1, 2, 8, 9, 15, 16, 22, and 23 starting cycle 1.
    Other names:
    • Sarclisa
Experimental
Cohort C1, C2 and C3: maplirpacept (PF-07901801) + Carfilzomib and Dexamethasone 		Cohort C1: participants with Relapsing or Refractory (R/R) Multiple Myeloma (MM) will be treated with maplirpacept (PF-07901801) QW + carfilzomib and dexamethasone. Cohort C2: participants with R/R MM will be treated with maplirpacept (PF-07901801) QW + carfilzomib and dexamethasone. Cohort C3: participants with R/R MM will be treated with maplirpacept (PF-07901801) Q2W + carfilzomib and dexamethasone.
  • Drug: Maplirpacept (PF-07901801)
    maplirpacept (PF-07901801) will be administered by intravenous infusion at ranging doses, as determined from sequential dosing cohorts.
    Other names:
    • SIRPα-IgG4 Fc
    • TTI-622
  • Drug: Carfilzomib
    Days 1, 8, and 15 of 28-day cycles; starting dose IV given on Cycle (C) 1 Day (D) 1, and if tolerated, then increased dose via IV given starting on C1D8 and subsequent doses thereafter.
    Other names:
    • KYPROLIS
  • Drug: Dexamethasone
    starting dose via IV on Days 1, 8, 15, and increased dose via IV on 28-day cycles

More Details

Status
Active, not recruiting
Sponsor
Pfizer

Study Contact

Detailed Description

This is a trial of maplirpacept (PF-07901801) in subjects with relapsed or refractory lymphoma or multiple myeloma (MM) and subjects with newly diagnosed acute myeloid leukemia (AML). This trial will be conducted in 2 phases: Phase 1a (Dose-Escalation Phase for Single-Agent maplirpacept (PF-07901801) and Phase 1b maplirpacept (PF-07901801) Combinations and Single-Agent. In the Dose-Escalation Phase for Single-Agent maplirpacept (PF-07901801), subjects with relapsed or refractory lymphoma will be enrolled in sequential dose cohorts. In the Combination and Single-Agent Treatment part, subjects will be included in 1 of 14 cohorts: (Cohort A1 and A2) subjects with newly diagnosed TP53-mutated AML will be treated with maplirpacept (PF-07901801) + azacitidine; (Cohort B1 and B2) elderly subjects or subjects unfit for intensive induction chemotherapies with newly diagnosed TP53-wildtype AML will be treated with maplirpacept (PF-07901801) + azacitidine and venetoclax; (Cohort C1, C2, and C3) subjects with relapsed or refractory MM will be treated with maplirpacept (PF-07901801) + carfilzomib and dexamethasone;(Cohort D1 and D2) subjects in relapsed or refractory CD20+ diffuse large B-cell lymphoma will be treated with maplirpacept (PF-07901801) + an anti-CD20 targeting agent; (Cohort E1 and E2) subjects with relapsed refractory MM will be treated with single-agent maplirpacept (PF-07901801); and (Cohorts F1, F2 and F3) with relapsing or refractory MM will be treated with increasing doses of maplirpacept (PF-07901801) + isatuximab, carfilzomib and dexamethasone.

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.