Dr Molenberghs published methodological work on surrogate markers in clinical trials, categorical data, longitudinal data analysis, and on the analysis of non-response in clinical and epidemiological studies. He served as Joint Editor for Applied Statistics (2001-2004), Co-editor for Biometrics (2007--2009) and as President of the International Biometric Society (2004-2005). He currently is Co-editor for Biostatistics (2010--). He was elected Fellow of the American Statistical Association and received the Guy Medal in Bronze from the Royal Statistical Society.