Prof. Yvan Vandenplas

Prof. Yvan Vandenplas is a giant figure in European pediatric gastroenterology—one of the subspecialty's most published, most cited, and most internationally influential clinician-scientists. Based at UZ Brussel, the university hospital of the Vrije Universiteit Brussel (Free University of Brussels), where he holds the chair in pediatrics, he has dedicated more than 35 years of his career to understanding and improving the care of children with gastrointestinal disorders, with a particular focus on conditions of infancy and early childhood.

His clinical reputation rests above all on his expertise in gastroesophageal reflux disease (GERD) in infants and children—a condition that he has studied systematically for decades, contributing to the development of standardized diagnostic criteria (including pH-impedance monitoring, which he helped introduce into routine pediatric practice), evidence-based treatment guidelines, and the critical evaluation of infant formula modifications designed to reduce symptoms of reflux. His work has been instrumental in bringing scientific rigor to a field where anecdote and commercial influence have historically been pervasive.

Alongside his GERD work, Prof. Vandenplas is a recognized authority on food allergies in infancy—particularly cow's milk protein allergy (CMPA), which is the most common food allergy in young children—and on the appropriate use of hypoallergenic and extensively hydrolyzed formulas. He has led ESPGHAN guideline committees on infant formula composition and cow's milk allergy management, producing internationally adopted recommendations used by pediatricians and gastroenterologists across Europe and beyond.

His celiac disease practice encompasses both the diagnostic evaluation of children with suspected gluten enteropathy and the long-term nutritional management of confirmed cases. He also sees children with eosinophilic esophagitis, inflammatory bowel disease, and functional gastrointestinal disorders including infantile colic, functional constipation, and irritable bowel syndrome in older children. His clinic at UZ Brussel draws patients from across Belgium, France, Luxembourg, and the Netherlands, as well as from further afield.

Prof. Vandenplas completed his medical degree at the Vrije Universiteit Brussel, one of Belgium's two French/Dutch-language bilingual research universities, and undertook his pediatric residency and subspecialty training in pediatric gastroenterology at UZ Brussel. His PhD research focused on gastroesophageal reflux in infants, using pH monitoring—then a relatively new technique—to systematically characterize reflux patterns and their relationship to symptoms and complications. This work established the scientific foundation for his subsequent career-long engagement with GERD. He has served as a visiting professor and visiting scholar at pediatric gastroenterology centers across Europe, North America, and Asia, and has been invited to deliver named lectures at ESPGHAN, NASPGHAN, and World Congress of Pediatric Gastroenterology meetings over multiple decades. He was appointed to the chair of pediatrics at VUB, where he has supervised generations of pediatric residents and doctoral students.

Prof. Vandenplas's clinical practice covers the diagnosis and management of the most common and complex gastrointestinal conditions affecting infants and children. In GERD, he performs and interprets esophageal pH-impedance monitoring—the gold standard diagnostic test that simultaneously measures acid and non-acid reflux episodes—to guide treatment decisions and distinguish pathological reflux from physiological regurgitation in infants. He performs esophageal manometry for evaluation of motility disorders and conducts diagnostic and therapeutic upper and lower gastrointestinal endoscopy in children, including biopsy for histological diagnosis of eosinophilic esophagitis, celiac disease, and Helicobacter pylori infection.

For food allergy, his clinic provides a systematic evaluation approach including detailed dietary history, skin prick testing, specific IgE measurement, and where appropriate supervised oral food challenges to establish definitive diagnoses and guide formula or dietary selection. For celiac disease, he coordinates serology-based screening with endoscopic and histological confirmation, and provides long-term dietary follow-up and nutritional monitoring. He uses hydrogen breath testing for diagnosis of lactose intolerance, small intestinal bacterial overgrowth, and orocecal transit time. His IBD practice covers the full range of diagnostic and therapeutic options for pediatric Crohn's disease and ulcerative colitis, including induction and maintenance biologic therapy.

Prof. Vandenplas is one of the most published pediatric gastroenterologists in the world, with over 600 peer-reviewed publications—making him not only Belgium's but one of Europe's most prolific clinical researchers in this specialty. His publication list spans more than three decades of consistent output in journals including the Journal of Pediatric Gastroenterology and Nutrition (JPGN), Pediatrics, the Archives of Disease in Childhood, Alimentary Pharmacology & Therapeutics, and Acta Paediatrica. He has served on the editorial boards of JPGN and several other pediatric journals and has been a peer reviewer for virtually every major pediatric and gastroenterology journal.

His research on infant formula—evaluating the effects of thickeners, prebiotics, probiotics, and hydrolyzed proteins on reflux, allergy, and microbiome development—has been a source of both scientific progress and methodological debate, and he has been a consistent advocate for evidence-based evaluation of formula modifications. His ESPGHAN guideline contributions—including guidelines on infant GERD, cow's milk protein allergy, and probiotic use in children—are among the most widely downloaded and cited documents in the field. He has contributed to the development of international GERD diagnostic criteria and has conducted clinical trials of proton pump inhibitors, H2 receptor antagonists, and antacids in the pediatric age group.

UZ Brussel is centrally located in Brussels—the capital of Belgium and the de facto capital of the European Union—which makes it highly accessible to families from across Europe. Prof. Vandenplas regularly sees patients from neighboring countries including France, Luxembourg, the Netherlands, and Germany, as well as families from further afield who travel specifically to consult one of Europe's most experienced pediatric gastroenterologists. The hospital has an international patient office and Prof. Vandenplas's team is experienced in coordinating with foreign pediatricians and family doctors. He consults in Dutch, French, and English. EU families can access care under the European Health Insurance Card or cross-border healthcare directive; non-EU families are accommodated on a private basis. Video consultations are available and particularly practical for families seeking guidance on formula choice, dietary management, or interpretation of diagnostic test results in their child with GERD, food allergy, or celiac disease.

Prof. Vandenplas holds Distinguished Fellow status in ESPGHAN (European Society for Paediatric Gastroenterology, Hepatology and Nutrition)—the highest honor the society bestows—in recognition of his decades of contributions to European pediatric gastroenterology research, education, and guideline development. The Vrije Universiteit Brussel presented him with its Research Excellence Award for sustained outstanding research output across a career of more than three decades. He has chaired or co-chaired multiple ESPGHAN guideline committees, including those on infant formula composition, gastroesophageal reflux in infants, probiotics and prebiotics, and cow's milk protein allergy—guidelines that are now the standard reference for pediatricians and gastroenterologists across Europe. He has been invited to deliver plenary and keynote addresses at ESPGHAN, NASPGHAN, and World Congress of Pediatric Gastroenterology meetings, and has trained numerous pediatric gastroenterology fellows from Belgium and other European countries.