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Cusatuzumab

Phase 2

Leukemia, Myeloid, Acute | Small molecule | Oncology |argenx SE|Last Updated: Aug 20, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLEDBiomarker
Total Trials3
Total Enrollment170
FDA Designations
No designations recorded
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04023526A Study of Cusatuzumab Plus Azacitidine in Participants With Newly Diagnosed Acute Myeloid Leukemia Who Are Not Candidates for Intensive ChemotherapyPHASE2 ACTIVE NOT_RECRUITING 103Jul 29, 2019May 15, 2026Aug 20, 202556 Australia, Brazil +7
NCT04241549A Study of Cusatuzumab Plus Azacitidine in Japanese Participants With Newly Diagnosed Acute Myeloid Leukemia or High-risk Myelodysplastic Syndrome Who Are Not Candidates for Intensive TreatmentPHASE1 COMPLETED 6Mar 25, 2020Jul 19, 2021Aug 9, 20235 Japan
NCT04150887Cusatuzumab in Combination With Background Therapy for the Treatment of Participants With Acute Myeloid LeukemiaPHASE1 ACTIVE NOT_RECRUITING 61Dec 23, 2019May 15, 2026Apr 17, 202523 United States, Canada +3
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Study Endpoints
Primary Endpoints
Percentage of Participants With Complete Remission (CR)
Up to 3 years and 5 months

Complete remission based on European Leukemia Network (ELN) 2017 response criteria. Defined as bone marrow blasts \<5%; absence of circulating blasts and blasts with Auer rods; absences of extramedullary disease; ANC \>= 1.0 x10\^9/L; platelet count \>=100 x 10\^9/L

Part 1 and Part 2: Number of Participants with Adverse Events (AEs) and Serious Adverse Events (SAEs)
Up to 3 years

Number of participants with AEs and SAEs will be reported.

Part 1 and Part 2: Number of Participants with Dose-Limiting Toxicity (DLTs)
Up to 42 days

Number of participants with DLTs will be reported.

Part 1 and Part 2: Severity of DLT as Assessed by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE)
Up to 42 days

Severity of DLT as assessed by NCI-CTCAE in participants will be reported.

Frequency and Severity of Adverse Events (AEs), Laboratory Abnormalities, and Physical Exam Findings as a Measure of Safety
Up to 42 months

Frequency and severity of AEs, laboratory abnormalities, and physical exam findings will be reported.

Secondary Endpoints
Percentage of Participants With CR With Partial Hematological Recovery (CRh)
Up to 3 years and 5 months
Percentage of Participants With CR Plus CRh
Up to 3 years and 5 months
Percentage of Participants With CR With Incomplete Recovery (CRi)
Up to 3 years and 5 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Azacitidine 75 mg/m^2 and Cusatuzumab 10 mg/kgEXPERIMENTALParticipants will receive azacitidine 75 milligram per meter square (mg/m\^2) subcutaneously (SC) or intravenously (IV) on Day 1 through Day 7 and cusatuzumab 10 milligram per kilogram (mg/kg) IV on Day 3 and Day 17 of each 28-day cycle in Part 1. Part 1 findings will be reviewed by a data review committee.
Azacitidine 75 mg/m^2 and Cusatuzumab 20 mg/kgEXPERIMENTALParticipants will receive azacitidine 75 mg/m\^2 SC or IV on Day 1 through Day 7 and cusatuzumab 20 mg/kg IV on Day 3 and Day 17 of each 28-day cycle in Part 1. Part 1 findings will be reviewed by a data review committee.
Part 1 (Dose Finding): Cusatuzumab + AzacitidineEXPERIMENTALParticipants with acute myeloid leukemia (AML) will receive cusatuzumab intravenously (IV) in combination with azacitidine subcutaneously (SC) or IV. The dose levels will be escalated based on the decisions of the Study Evaluation Team (SET) until the recommended Phase 2 Dose (RP2D) has been identified.
Part 2 (Dose Expansion): Cusatuzumab + AzacitidineEXPERIMENTALParticipants with acute myeloid leukemia (AML) and high-risk myelodysplastic syndromes (MDS) will receive cusatuzumab intravenously (IV) at the recommended Phase 2 dose (RP2D) determined in Part 1 in combination with azacitidine subcutaneously (SC) or IV.
Experimental: Cohort 2: Cusatuzumab + VenetoclaxEXPERIMENTALParticipants enrolled in this cohort will receive venetoclax ramp-up to 400 mg orally (as background therapy) starting on Cycle 1 Day 1 and followed by 400 mg daily dosing starting on Cycle 1 Day 4 plus cusatuzumab IV on Day 3 and Day 17 of each 28-day cycle. Cohort 2 will not be enrolled in the US.
Cohort 3: Cusatuzumab + Venetoclax + Azacitidine (CVA)EXPERIMENTALParticipants enrolled at US sites will receive cusatuzumab 10 mg/kg and potentially escalate to 20 mg/kg IV in combination with azacitidine 75 mg/m\^2 SC or IV plus venetoclax ramp-up to 400 mg orally (as background therapies). Participants enrolled from ex-US sites will receive cusatuzumab 20 mg/kg and potentially de-escalate to 10 mg/kg IV in combination with azacitidine 75 mg/m\^2 SC or IV plus venetoclax ramp-up to 400 mg orally (as background therapies).
Interventions
NameTypeDescription
AzacitidineDRUGAzacitidine SC or IV will be administered at a standard dose of 75 mg/m\^2 on days 1-7 of each cycle.
CusatuzumabDRUGCusatuzumab IV will be administered as 10 mg/kg or 20 mg/kg on days 3 and 17 of each cycle.
VenetoclaxDRUGVenetoclax will be administered orally and the dose will ramp-up to 400 mg.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites56

Inclusion Criteria: * Acute myeloid leukemia (AML) according to World Health Organisation (WHO) 2016 criteria and fulfilling all of the following criteria that defines those who are "not candidates for intensive chemotherapy": 1. greater than or equal to (\>=)75 years of age or 2. less than (\...

Countries:AustraliaBrazilFranceIsraelItalyRussiaSpainSwitzerlandTurkey (Türkiye)JapanUnited StatesCanadaGermanyPoland
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT04150887studyFirstPostDate: changed
LOWMay 24, 2026NCT04023526studyFirstPostDate: changed