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OncoMatch/Clinical Trials/NCT05673057

Study of MP0533 in Patients Acute Myeloid Leukemia or Myelodysplastic Syndrome

Is NCT05673057 recruiting? Yes, currently enrolling (May 2026). This Phase 1/2 trial studies multiple treatments for leukemia.

Phase 1/2RecruitingMolecular Partners AGNCT05673057Data as of May 2026

Treatment: MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) monotherapy, Part 1 · MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) monotherapy, Part 2-Arm A · MP0533 (multispecific DARPin CD3 Engager Targeting CD33, CD123 and CD70) + azacitidine + venetoclax · MP0533 with Obinutuzumab pretreatment · MP0533 + azacitidine + venetoclax with optional Obinutuzumab pretreatment, Arm B relapsed/refractory AML · MP0533 + azacitidine + venetoclax with optional Obinutuzumab pretreatment, Arm B in treatment naïve patientsThe purpose of this study is to evaluate the safety, tolerability, and preliminary activity of MP0533 in patients with acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS)

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Extracted eligibility criteria

Cancer type

Acute Myeloid Leukemia

Acute Lymphoblastic Leukemia

Biomarker criteria

Excluded: CD33 targeted therapy

Treatment with investigational agents or agents targeting CD33, CD123 or CD70 within 4 weeks or five times the half-life of the agent, whichever is longer, prior to start of trial medication

Excluded: CD123 targeted therapy

Treatment with investigational agents or agents targeting CD33, CD123 or CD70 within 4 weeks or five times the half-life of the agent, whichever is longer, prior to start of trial medication

Excluded: CD70 targeted therapy

Treatment with investigational agents or agents targeting CD33, CD123 or CD70 within 4 weeks or five times the half-life of the agent, whichever is longer, prior to start of trial medication

Allowed: FLT3 mutation

eligibility for standard 2nd line of targeted therapy, like gilteritinib for FLT3 mutated AML, unless this therapeutic option has already been given and proven ineffective (patient relapsed or resistant to), or contraindicated, or confounding mutations exist, or there is a lack of access to this recommended therapy

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Prior therapy

Max 2 prior lines

Cannot have received: allogeneic hematopoietic cell transplant

Exception: allowed if >3 months prior

Allogeneic HCT within the last 3 months

Cannot have received: targeted therapy (e.g. gilteritinib for FLT3 mutated AML) (gilteritinib)

Exception: unless already given and proven ineffective, contraindicated, confounding mutations, or lack of access

eligibility for standard 2nd line of targeted therapy, like gilteritinib for FLT3 mutated AML, unless this therapeutic option has already been given and proven ineffective (patient relapsed or resistant to), or contraindicated, or confounding mutations exist, or there is a lack of access to this recommended therapy

Cannot have received: investigational agent

Exception: allowed if >4 weeks or >5x half-life prior to start of trial medication

Treatment with investigational agents or agents targeting CD33, CD123 or CD70 within 4 weeks or five times the half-life of the agent, whichever is longer, prior to start of trial medication

Cannot have received: venetoclax (venetoclax)

received VEN in prior treatment lines (Arm B only)

Lab requirements

Kidney function

Adequate renal function

Liver function

Adequate hepatic function

Cardiac function

Left ventricular ejection fraction of < 50% on echocardiographic exam at screening [excluded]; history or evidence of clinically significant cardiovascular disease [excluded]

Adequate renal and hepatic function. Left ventricular ejection fraction of < 50% on echocardiographic exam at screening [excluded]; history or evidence of clinically significant cardiovascular disease [excluded]

Structured fields extracted by AI. May contain errors — verify against the official protocol.

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