Summary
This is a first-in-human, Phase I, open-label, multicenter, dose-escalation and dose
expansion study to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics,
and preliminary anti-tumor activity of RO7589831 monotherapy, and in combination with
pembrolizumab, in participants with microsatellite instability (MSI) and/or deficient
mismatch repair (dMMR) advanced solid tumors. RO7589831 is an oral drug that acts on a
protein called Werner (WRN), which may promote the growth of cancers that are MSI and/or
dMMR. By acting on WRN, RO7589831 may be able to block the growth of these types of
cancer.