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December 8, 2025BloodOpen Access

IgG2a-formatted 4-1BB agonism combined with S100A9 inhibition enhances T cell activation and tumor control in a preclinical model of multiple myeloma

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Authors

EMEline MenuMTMarie Törngren

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Overview

Combination of IgG2a 4-1BB agonist and S100A9 inhibition reduces plasmacytosis in multiple myeloma, suggesting improved tumor control.

Key Points

  • Significant reduction in plasmacytosis to 14.09% with combination therapy in preclinical multiple myeloma model.
  • Treatment with IgG2a-formatted 4-1BB agonist resulted in enhanced T cell activation and decreased myeloid-derived suppressor cells.
  • Assessment included flow cytometry and analysis of tumor microenvironment changes in response to treatment.
  • Findings underscore the importance of select agonists and combinations in targeting tumor microenvironment for immunotherapy.

Cite This Study

Menu et al. (2025) studied this question.

synapsesocial.com/papers/69362f3a4fa91c937236d3dfhttps://doi.org/10.1182/blood-2025-5696
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