Though the majority of immune-related adverse events (irAEs) can be managed with corticosteroids and other immunosuppressive treatments, life-threatening and sometimes fatal events have still been reported thus revealing a need to develop measures for effective management.
The results demonstrated preliminary evidence of monotherapy activity, encouraging efficacy in combination with the PD-1 checkpoint inhibitor pembrolizumab (Keytruda), and biomarker data supporting FLX475’s mechanism of action.
The researchers hypothesized “that serum PD-L1 may identify a subgroup of patients with HER2-positive [metastatic breast cancer] who may benefit the most from the addition of novel immunotherapies to trastuzumab.”