Amer Zeidan, MBBS, on TP53-Mutated Higher-Risk MDS: Bexmarilimab Plus Azacitidine
ASH 2025
Amer Zeidan, MBBS, of Yale School of Medicine, shares results from the phase I/II BEXMAB study, which examined the safety, tolerability and preliminary efficacy of bexmarilimab—a novel macrophage checkpoint inhibitor targeting Clever-1—in combination with the standard of care, azacitidine, in patients with higher-risk myelodysplastic syndromes (MDS), including those with TP53-mutated disease. (Abstract 236).
The ASCO Post Staff
Brian Ball, MD, of City of Hope, presents updated results from the phase I/II BEXMAB study. They showed that the doublet had encouraging activity in patients with TP53-mutant, higher-risk MDS; translational data support the combination regimen’s potential for altering immune dysregulation in this subtype (Abstract 236).
The ASCO Post Staff
Jack Khouri, MD, of Cleveland Clinic, describes the findings of a phase II trial which investigated the safety and efficacy of burixafor (GPC-100), a potent and selective small -molecule antagonist of CXCR4, and propranolol with granulocyte colony-stimulating factor (G-CSF) for the mobilization of hematopoietic progenitor cells (HPC) in patients with multiple myeloma. Researchers aimed to boost the bone marrow HPC niche and optimize mobilization in patients with multiple myeloma eligible for autologous hematopoietic cell transplant (Abstract 1050).
The ASCO Post Staff
Nitin Jain, MD, of The University of Texas MD Anderson Cancer Center, reviews findings from a phase II trial of pirtobrutinib, venetoclax, and obinutuzumab for patients with Richter transformation (Abstract 89).
The ASCO Post Staff
Mikkael Sekeres, MD, MS, Chief, Division of Hematology and Professor of Medicine at Sylvester Comprehensive Cancer Center, part of the University of Miami Miller School of Medicine, presents findings from a new study that connects exposure to the herbicide Agent Orange to earlier and more severe cases of myelodysplastic syndromes (MDS). Researchers concluded that exposure is associated with younger age at MDS diagnosis, ultimate MDS diagnosis, genetic complexity of MDS, increased risk of disease progression, and with Black race (Abstract 5626).
The ASCO Post Staff
Guillermo Garcia-Manero, MD, of The University of Texas MD Anderson Cancer Center, reviews data from three abstracts in myelodysplastic syndromes (MDS) presented at this year’s meeting: outcomes from the phase III VERONA trial of venetoclax with azacitidine vs placebo with azacitidine in patients with treatment-naive intermediate- and higher-risk MDS (Abstract 235); safety and efficacy results from a phase Ib trial of a dual IRAK1/4 inhibitor in patients with relapsed/refractory lower-risk MDS (Abstract 489); and results from the phase II ASTX030-01 trial, showing pharmacokinetic, efficacy, and safety data of oral ASTX030 in patients with MDS (Abstract 491).
