Human TCR: expected staining of lymphocytes and epithelial cells consistent with IL-36R expression; no tissue distribution studies
“Spesolimab stained lymphocytes in tonsil epithelial cells in a variety of tissues, which was considered expected based on previous data and literature on IL-36R expression.”
Infection risk (IL-36 pathway in epithelial host defence) and potential reduced cancer immunosurveillance
“Given the expression of the IL36R in epithelium of various tissues including skin and lung, and as the IL36 pathway has been implicated in host-defence, spesolimab treatment may be expected to increase the risk for serious, severe or opportunistic infections.”
In vitro whole-blood cytokine release far below alemtuzumab/TGN1412 controls; no effects on monkey TDAR, lymphocyte subsets or serum cytokines; ADA in some monkeys