Prof. Mārcis Leja
Professor Mārcis Leja is a distinguished researcher with a lifelong commitment to cancer prevention and screening, particularly focusing on gastrointestinal cancers. With decades of experience in the field, M.Leja serves as a Board member of the European Helicobacter and Microbiota Study Group (EHMSG) and is actively involved in several European and international guideline committees, including the Maastricht/Florence reviews and the IARC expert group.
Since 2013, he has played a pivotal role in the GISTAR study (www.gistar.eu), a groundbreaking population-based, randomized gastrointestinal cancer prevention study—the only one of its kind in Europe. This initiative has led to the development of EU-based gastric cancer prevention activities, including the TOGAS project, which M.Leja coordinates.
M.Leja is actively engaged in multiple international organizations, such as the Screening Committee of the World Endoscopy Organization (WEO), International Colorectal Cancer Screening Network (ICRCSN), and the International Digestive Cancer Alliance (IDCA). With past roles on the Scientific Committee of United European Gastroenterology and as a Cancer Mission Board member, he currently contributes as a member of the Research Committee at United European Gastroenterology and the Task Force on health data within BiomedAlliance.