A multi-arm phase Ib/II study designed for rapid, parallel evaluation of novel immunotherapy combinations in relapsed/refractory acute myeloid leukemia

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12 Scopus citations

Abstract

We conducted a phase Ib/II multi-arm, parallel cohort study to simultaneously evaluate various immunotherapeutic agents and combinations in relapsed/refractory acute myeloid leukemia (AML). Overall, 50 patients were enrolled into one of 6 arms: (A) single agent PF-04518600 (OX40 agonist monoclonal antibody), (B) azacitidine + venetoclax + gemtuzumab ozogamicin (GO), (C) azacitidine + avelumab (anti-PD-L1 monoclonal antibody) + GO, (D) azacitidine + venetoclax + avelumab, (E) azacitidine + avelumab + PF-04518600, and (F) glasdegib + GO. Among all regimens evaluated, azacitidine + venetoclax + GO appeared most promising. In this arm, the CR/CRi rates among venetoclax-naïve and prior venetoclax-exposed patients were 50% and 22%, respectively, and the 1-year OS rate was 31%. This study shows the feasibility of a conducting a multi-arm trial to efficiently and simultaneously evaluate novel therapies in AML, a needed strategy in light of the plethora of emerging therapies. This trial was registered at www.clinicaltrials.gov as NCT03390296.

Original languageEnglish (US)
Pages (from-to)2161-2170
Number of pages10
JournalLeukemia and Lymphoma
Volume63
Issue number9
DOIs
StatePublished - 2022

Keywords

  • avelumab
  • azacitidine
  • gemtuzumab ozogamicin
  • Monoclonal antibody
  • venetoclax

ASJC Scopus subject areas

  • Hematology
  • Oncology
  • Cancer Research

MD Anderson CCSG core facilities

  • Biostatistics Resource Group
  • Flow Cytometry and Cellular Imaging Facility

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