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MP0533

Phase 1

Leukemia | Small molecule | Oncology |Molecular Partners AG|Last Updated: Jun 9, 2026

Target and mechanism

Molecular targetCD33/CD123/CD70/CD3
ModalitySmall molecule

Also known as MP0533 monotherapy, Part 1

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment249

FDA Designations

No designations recorded

Clinical trial landscape

MP0533 · 1 trial · 4 indications

Phase 1 1
NCT05673057Study of MP0533 in Patients Acute Myeloid Leukemia or Myelodysplastic SyndromeLeukemia
ACTIVE NOT_RECRUITING249 Analytics
PHASE1ACTIVE NOT_RECRUITING
Study of MP0533 in Patients Acute Myeloid Leukemia or Myelodysplastic Syndrome
LeukemiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 1 dose escalation: Recommended Phase 2 Dose Regimen and/or Maximum Tolerated Dose Regimen
from start of treatment to end of first cycle (day 1 - 28)

Incidence of dose limiting toxicities, assessment of toxicity/safety, pharmacokinetic and efficacy parameters

Phase 2 dose extension: Overall Response Rate
throughout the study (on average 3 months)

Best overall response of complete remission (CR), complete remission with partial hematological recovery (CRh), complete remission with incomplete hematological recovery (CRi), morphologic leukemia-free state (MLFS) and partial remission (PR) according to the European LeukemiaNet (ELN) response criteria 2022

Secondary Endpoints

Serum Concentration-time profiles (max. serum)
throughout the study (on average 1 year)
Serum Concentration-time profiles (at Cmax (Tmax))
throughout the study (on average 1 year)
Serum Concentration-time profiles (min. serum concentration)
throughout the study (on average 1 year)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Dose escalation (Part 1)EXPERIMENTAL• MP0533 is administered by intravenous infusion
Dose escalation (Part 2 - Arm A)EXPERIMENTAL* MP0533 is administered by intravenous infusion * Obinutuzumab pretreatment administered
Dose escalation (Part 2 - Arm B)EXPERIMENTAL* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional Obinutuzumab pretreatment administered
Dose expansion (Arm A)EXPERIMENTAL* MP0533 is administered by intravenous infusion at densified dosing schedule * Obinutuzumab pretreatment administered
Dose expansion (Arm B relapsed/refractory AML)EXPERIMENTAL* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional Obinutuzumab pretreatment administered
Dose expansion (Arm B in treatment naïve patients)EXPERIMENTAL* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional obinutuzumab pretreatment administered

Interventions

NameTypeDescription
MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) monotherapy, Part 1DRUGMP0533 is administered by intravenous infusion
MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) monotherapy, Part 2-Arm ADRUG* MP0533 is administered by intravenous infusion * Obinutuzumab pretreatment administered
MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) + azacitidine + venetoclaxDRUG* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional obinutuzumab pretreatment administered
MP0533 with Obinutuzumab pretreatmentDRUG* MP0533 is administered by intravenous infusion at densified dosing schedule * Obinutuzumab pretreatment administered
MP0533 + azacitidine + venetoclax with optional Obinutuzumab pretreatment, Arm B relapsed/refractory AMLDRUG* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional obinutuzumab pretreatment administered
MP0533 + azacitidine + venetoclax with optional Obinutuzumab pretreatment, Arm B in treatment naïve patientsDRUG* MP0533 is administered by intravenous infusion * Azacitidine is administered by subcutaneous injection for 7 days per cycle * Venetoclax is administered orally for 14 days per cycle * Optional obinutuzumab pretreatment administered
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: * Has signed and dated written informed consent prior to performing any study procedure, including screening * Diagnosis of relapsed/refractory AML or relapsed/refractory MDS/AML according to the ELN recommendation 2022. * Age ≥18 years old on the day of signing informed consent...

Countries:FranceLithuaniaNetherlandsSwitzerland
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Competitive Landscape -Leukemia 327 trials

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