Immediately prior to joining Addex Dr. Galibert was senior staff scientist at Merck Serono. From 1996-2005 he held successive research positions at Immunex Corp. (acquired by Amgen Inc.) and Amgen, where he cloned the receptor activator of nuclear factor kappa B ligand (RANKL) and co-authored the initial patent leading to the development of Amgen's denosumab, a monoclonal antibody against RANKL, which is in Phase III development for postmenopausal osteoporosis and in clinical development for other indications. From 1991-1995 Dr. Galibert was a PhD fellow at Schering-Plough.