Marc Twagirumukiza (born 1973, in Rwanda) is a Belgian physician and a senior clinical researcher in the fields of clinical pharmacology, cardiovascular and hypertension research, epidemiology, electronic health records, real world data / real world evidence and semantic web technology in health sciences. He is chair of World Wide Web Consortium Healthcare Schema Vocabulary Community Group. Education Twagirumukiza is a physician and graduated with a PhD degree in clinical pharmacology from Ghent University, Belgium in 2010. Academic and medical career He served as physician in University Hospital Butare, Southern Province of Rwanda and lecturer in the former Faculty of medicine at National University of Rwanda currently known as College of Medicine and Health Sciences at University of Rwanda from 2001 to 2005. He was also visiting lecturer in couple of African schools of Medicine (Rwanda, Burundi, Mozambique, and Kenya among others) from 2001 to 2013. He is currently serving as professor of medicine -clinical pharmacology at Ghent University and active in various medical and life science research areas: Clinical Pharmacology and Clinical Trials, public health, experimental research, and clinical research in medicine. Other area includes clinical and hospital studies, cardiovascular research (mainly high blood pressure and arterial stiffness in Sub-Saharan Africa), access to medicines (availability, funding and supply chain, pricing and affordability, regulation and policies) in low and middle income countries, and primary health care. Semantic web activities and career Twagirumukiza is also interested in semantic web in health sciences: clinical information models, ontology, terminology, standards and Interoperability, medical knowledge representation and reasoning in electronic health records. He participated in the architecture of the Common Information Model used by the semantic layer in SALUS project. SALUS stands for "Scalable, Standard based Interoperability Framework for Sustainable Proactive Post Market Safety Studies". Its goal was to provide a functional interoperability profiles enabling exchange of electronic health records, the semantic interoperability solutions enabling meaningful interpretation of the exchanged records, the security and privacy mechanisms ensuring that electronic health records are shared in an ethical and safe way, a novel framework for open-ended temporal pattern discovery for safety studies on top of systems and the implementation of high potential use cases enabling secondary use of electronic health records and real world data / real world evidence for post-market safety studies. Twagirumukiza is the founder and currently the chair of World Wide Web Consortium Healthcare Schema Vocabulary Community Group. Networks and societies Twagirumukiza is a