To identify microbiome-based biomarkers and mechanisms that predict in advance when the body can no longer compensate for the dysfunctional liver (decompensated cirrhosis), when such decompensated cirrhosis will progress to acute-on-chronic liver failure (ACLF), and a patient’s individual treatment response. Based on such biomarkers, we strive to develop novel diagnostic tools for earlier and better patient stratification and to establish personalised and effective treatment strategies. This project has received funding from the European Union's Horizon 2020 research and innovation programme.