A Study to Assess Safety, Tolerability and Preliminary Efficacy of Bexmarilimab in Combination With Standard of Care in Patients With Hematological Malignancies (BEXMAB)
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ClinicalTrials.gov Identifier: NCT05428969 |
Recruitment Status :
Recruiting
First Posted : June 23, 2022
Last Update Posted : June 23, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Acute Myeloid Leukemia Chronic Myelomonocytic Leukemia Myelodysplastic Syndromes Relapsed/Refractory AML | Drug: Bexmarilimab Drug: Azacitidine Drug: Venetoclax | Phase 1 Phase 2 |
This is a multicenter Phase 1/2 open-label, study to assess the safety, tolerability and preliminary efficacy of increasing doses of bexmarilimab (FP-1305) in patients with intermediate, high or very high-risk MDS, CMML with 10-19 % marrow blasts, CMML/MDS with failure to hypomethylating agent (HMA), or in patients with newly diagnosed AML non-fit for induction therapy or relapsed/refractory AML. The Phase 1 part of the study will identify a safe and tolerable bexmarilimab dose amongst four predefined dose levels using a bayesian optimal interval (BOIN) dose escalation design to identify the maximum tolerated dose (MTD) of bexmarilimab when administered in combination with SoC.
The Phase 2 of the study is an expansion phase to further evaluate the safety and preliminary efficacy of bexmarilimab treatment at RP2D combined with SoC and will follow a Simon's 2-stage design for each of the indications selected to continue forward from Phase 1. This design allows for the investigation of bexmarilimab activity and preliminary response assessments tailored to each indication and allows early stopping in case of futility using a minimum number of patients. Patients from Phase 1, with the selected indication to be investigated in Phase 2, that have been treated at RP2D may be counted towards the number of patients for Phase 2.
Both study phases consist of a screening period, a treatment period, an end of treatment (EoT) as safety follow-up and disease progression/survival follow-up.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 181 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Phase I/II Open-Label Study to Assess Safety, Tolerability and Preliminary Efficacy of the CLEVER-1 Antibody Bexmarilimab in Combination With Azacitidine or Azacitidine/Venetoclax in Patients With Myelodysplastic Syndrome or Chronic Myelomonocytic Leukemia or Acute Myeloid Leukemia |
Actual Study Start Date : | June 2, 2022 |
Estimated Primary Completion Date : | December 31, 2023 |
Estimated Study Completion Date : | December 31, 2024 |

Arm | Intervention/treatment |
---|---|
Experimental: Phase 1 - Intermediate/high risk MDS, CMML 10-19%, MDS/CMML failure to HMA, r/r AML
Standard of care azacitidine as per label; bexmarilimab 4 dose levels at once every week (Q1W) followed by once every 2 weeks (Q2W); 28-day cycle
|
Drug: Bexmarilimab
Intravenous
Other Name: FP-1305 Drug: Azacitidine As per label, subcutaneous |
Experimental: Phase 1 - Newly diagnosed AML patients non-fit for induction therapy
Standard of care azacitidine and venetoclax as per label; bexmarilimab 4 dose levels Q1W followed by Q2W; 28-day cycle
|
Drug: Bexmarilimab
Intravenous
Other Name: FP-1305 Drug: Azacitidine As per label, subcutaneous Drug: Venetoclax Oral
Other Name: Venclyxto® |
Experimental: Phase 2 - Intermediate/high risk MDS, CMML, MDS/CMML failure to HMA, r/r AML & newly diagnosed AML
Standard of care venetoclax and/or azacitidine as per label plus bexmarilmab
|
Drug: Bexmarilimab
Intravenous
Other Name: FP-1305 Drug: Azacitidine As per label, subcutaneous Drug: Venetoclax Oral
Other Name: Venclyxto® |
- Reporting of incidence and frequency of dose limiting toxicities (DLTs). [ Time Frame: From study start to end of Cycle 1 (each cycle is 28 days) ]
- Frequency and severity based on NCI-CTCAE grading of treatment emergent AEs and serious adverse events (SAE). [ Time Frame: From study start to 30 days after end of treatment (EOT) ]
- Complete response (CR) rate for MDS and CMML-2. [ Time Frame: From study start to 30 days after EOT ]
- Overall response rate (ORR) for MDS and CMML failure to prior HMA. [ Time Frame: From study start to 30 days after EOT ]
- Complete remission with incomplete blood recovery (CRi) for r/r AML. [ Time Frame: From study start to 30 days after EOT ]
- Minimal residual disease (MRD) status for newly diagnosed AML. [ Time Frame: From study start to 30 days after EOT ]
- Frequency and severity based on NCI-CTCAE grading of treatment emergent AEs and SAEs. [ Time Frame: From study start to 30 days after EOT ]
- Clinical efficacy measures based on progression free survival analyses defined as the time from study start to the date of documented disease progression or death from any cause, whichever occurs first, up to 2 years. [ Time Frame: 24 months from study start ]
- Clinical efficacy measures based on overall survival analyses defined as the length measured from study start to death from any cause up to 2 years. [ Time Frame: 24 months from study start ]
- Anti-bexmarilimab antibody positivity occurrence rate pre-dose and at defined timepoints during treatment. [ Time Frame: 24 months from study start ]
- Serum concentrations of bexmarilimab at defined timepoints pre-dose and post-dose of single and repeat bexmarilimab administrations using peripheral blood. [ Time Frame: From study start to end of Cycle 2 (each cycle is 28 days) ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
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Patient ≥ 18 years of age who presents with one of the following conditions:
- Morphologically confirmed diagnosis of MDS with revised International Prognostic Scoring System (rIPSS) risk categories: intermediate, high and very high.
- Morphologically confirmed diagnosis of CMML-2 with indication for azacitidine treatment.
- CMML and MDS patient with response failure to HMA or therapy regimen including HMA.
- Morphologically confirmed diagnosis of r/r AML following at least 1 line of prior therapies with indication for azacitidine treatment.
- Morphologically confirmed diagnosis of AML in patients unfit for induction therapy with indication for azacitidine-venetoclax treatment.
- Leukocyte count < 20 x10^9/L (< 25 x10^9/L for newly diagnosed AML). Hydroxycarbamide use is permitted to meet this criterion in MDS and AML but not in CMML.
- Adequate renal function.
- Adequate liver function.
Exclusion Criteria:
- Patient with acute promyelocytic leukemia (APL) or myeloproliferative CMML as defined by leukocyte count > 13 x10^9/L.
- Eastern Cooperative Oncology Group (ECOG) performance status >2 (except newly diagnosed AML where ECOG 3 is allowed for patients < 75 years).
- Allogeneic transplantation less than 6 months prior screening.
- Patient with active auto-immune disorder (except type I diabetes, celiac disease, hypothyroidism requiring only hormone replacement, vitiligo, psoriasis, or alopecia).
- The patient requires systemic corticosteroid (≥10 mg/day prednisone or equivalent) or other immunosuppressive treatment.
- Less than 21 days since the last dose of intravenous anticancer chemotherapy or less than 14 days or five half-lives (whichever is shorter) from a small molecule targeted therapy or oral anticancer chemotherapy before the first study treatment.
- Any immunotherapy or investigational therapy within preceding 28 days from the first study treatment.
- Pregnant or lactating women.
- History of chronic ulcers or clinically relevant liver disease leading to Child Pugh Score C or higher.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05428969
Contact: Inka Pawlitzky, PhD | +358 2 4695151 | inka.pawlitzky@faron.com |
United States, California | |
City of Hope National Medical Center | Recruiting |
Duarte, California, United States, 91010 | |
Contact: Rochelle Hernandez 626-218-0247 rochernandez@coh.org | |
Contact: Diana Oganesyan '626-218-0247 dioganesyan@coh.org | |
Principal Investigator: Anthony Stein, MD | |
United States, Texas | |
University of Texas, MD Anderson Cancer Center | Recruiting |
Houston, Texas, United States, 77030 | |
Contact: Shenell Alexander 713-745-8290 SAAlexander@mdanderson.org | |
Contact: Joie Alvarez 713-792-7321 jalvarez1@mdanderson.org | |
Principal Investigator: Naval Daver, MD | |
Finland | |
Helsinki University Hospital | Recruiting |
Helsinki, Finland, 00029 | |
Contact: Mika Kontro '+358-504-287-052 mika.kontro@hus.fi | |
Contact: Saara Vaalas '+358-504-011-048 saara.valas@helsinki.fi | |
Sub-Investigator: Mikko Myllymäki | |
Sub-Investigator: Riikka Räty | |
Sub-Investigator: Perttu Koskenvesa | |
Sub-Investigator: Kimmo Porkka | |
Sub-Investigator: Sari Kytölä | |
Principal Investigator: Mika Kontro | |
Kuopio University Hospital | Recruiting |
Kuopio, Finland, 70210 | |
Contact: Marja Pyörälä '+358-447-175-664 Marja.Pyorala@pshyvinvointialue.fi | |
Contact: Satu Maatta-Halonen '+350 44 717 5664 Satu.Maatta-Halonen@pshyvinvointialue.fi | |
Sub-Investigator: Annasofia Holopainen | |
Sub-Investigator: Manna Miilunpohja | |
Sub-Investigator: Antti Turunen | |
Sub-Investigator: Anu Partanen | |
Sub-Investigator: Taru Kuittinen | |
Principal Investigator: Marja Pyörälä | |
Oulu University Hospital | Recruiting |
Oulu, Finland, 90029 | |
Contact: Timo Siitonen '+358-831-54262 timo.siitonen@ppshp.fi | |
Contact: Kirsi Kvist-Mäkelä '+358 8 315 6103 'Kirsi.Kvist-Makela@ppshp.fi | |
Sub-Investigator: Milla Kuusisto | |
Sub-Investigator: Jokke Hannuksela | |
Sub-Investigator: Anna-Leena Huusko | |
Sub-Investigator: Sakari Kakko | |
Sub-Investigator: Kirsi Launonen | |
Sub-Investigator: Marjaana Säily | |
Sub-Investigator: Jenni Pylkäs | |
Principal Investigator: Timo Siitonen | |
Tampere University Hospital | Recruiting |
Tampere, Finland, 33520 | |
Contact: Johanna Rimpiläinen '+358331167558 Johanna.Rimpilainen@pshp.fi | |
Contact: Elina Ellilä '+358331169501 elina.ellila@pshp.fi | |
Sub-Investigator: Sirpa Koskela | |
Sub-Investigator: Sari Luopajärvi | |
Principal Investigator: Johanna Rimpiläinen |
Principal Investigator: | Mika Kontro, MD, PhD | Helsinki University Central Hospital |
Responsible Party: | Faron Pharmaceuticals Ltd |
ClinicalTrials.gov Identifier: | NCT05428969 |
Other Study ID Numbers: |
FP2CLI004 2021-002104-12 ( EudraCT Number ) |
First Posted: | June 23, 2022 Key Record Dates |
Last Update Posted: | June 23, 2023 |
Last Verified: | June 2023 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Macrophages Immunotherapy Hematological CLEVER-1 bexmarilimab |
hematological neoplasms azacitidine venetoclax myeloid cells |
Leukemia Leukemia, Myeloid Leukemia, Myeloid, Acute Preleukemia Leukemia, Myelomonocytic, Chronic Leukemia, Myelomonocytic, Juvenile Myelodysplastic Syndromes Pathologic Processes Neoplasms by Histologic Type Neoplasms Bone Marrow Diseases Hematologic Diseases |
Precancerous Conditions Myelodysplastic-Myeloproliferative Diseases Chronic Disease Disease Attributes Azacitidine Venetoclax Antimetabolites, Antineoplastic Antimetabolites Molecular Mechanisms of Pharmacological Action Antineoplastic Agents Enzyme Inhibitors |