He received his board certification in Internal Medicine in 1992 and in Cardiology in 1995. Jean-Luc has authored several manuscripts on pulmonary vascular disorders (H-index 36) and is consulting senior editor for the Journal of heart and lung transplantation

Jean-Luc has co-chaired the Pulmonary Hypertension Council at the International Heart and Lung Society (2002 – 2005), the Working Group on Pulmonary Circulation and Right Ventricular Function at the European Society of Cardiology (2006 – 2008) and the Working Group on Heart Failure at the Belgian Society of Cardiology (2008 – 2010). He was a Task Force member and section editor of the European Guidelines on pulmonary Hypertension (2009 and 2015). He is the current chair of the PH Council at the ISHLT (2018 – 2020).