Innate lymphoid cells (ILCs) in the joints of patients may drive the pathology of spondyloarthritis through the production of granulocyte colony-stimulating factor (GM-CSF). A recent study found that both GM-CSF-producing CD4 T cells and the GM-CSF+ Th17 cells expressed high levels of GPR65—indicating that both GM-CSF and GPR65 may be therapeutic targets for spondyloarthritis…
