CSF1 levels in both compartments achieved a plateau, indicative of full receptor engagement, early in the treatment period. Conclusions The AMB-05X PK and PD results support expansion of the clinical development of AMB-05X in TGCT with IA treatment at a comfortable interval of once-monthly or less.
The recommended combination dose of 1100 mg AMG 820 plus 200 mg pembrolizumab had an acceptable safety profile. Although pharmacodynamic effects were observed, antitumor activity was insufficient for further evaluation of this combination in selected patient populations.