Kaspar Rufibach is a member of Roche's Methods, Collaboration, and Outreach group. He does methodological research, provides consulting to Roche statisticians and broader project teams, gives biostatistics trainings for statisticians and non-statisticians in- and externally, mentors students, and interacts with external partners in industry, regulators, and the academic community in various working groups and collaborations. He has co-founded and co-leads the European special interest group “Estimands in oncology” (sponsored by PSI and EFSPI) that currently has more than 35 members from 22 companies and several Health Authorities and works on various topics around estimands in oncology.