Chronic graft versus host disease (cGVHD) affects 30-50% of allogenic hematopoietic cell transplant recipients, with a U.S. prevalence of ~14,000.1,2 There is a significant unmet medical need in steroid refractory patients, which affects ~50% of patients with cGVHD, and a movement toward combination therapy.3,4 The CSF1R signaling pathway plays a crucial role in cGVHD, as CSF1R inhibition was clinically validated in a Phase 3 study with an anti-CSF1R antibody.5

References

1) Yu J, et al. Cancer Med. 2023;12(3):3623-33.
2) Bachier CR, et al. Transplant Cell Ther. 2021;27(6):504.e-504.e6.
3) Zeiser R, et al. N Engl J Med. 2021;385(3):228-38.
4) Zeiser R. J Clin Oncol. 2023;4(10):1820-1824. 
5)  Kitko CL, et al. J Clin Oncol. 2023;41(10):1864-75.