- TRANSCHILD, European Reference Network on Transplantation in Children (incl. HSCT, heart, kidney, liver, intestinal, lung andmultiorgan) ( https://www.transplantchild.eu/)
- EpiCARE, European Reference Network on Rare and Complex Epilepsies (https://epi-care.eu/)
- ITHACA – European Reference Network on Rare Congenital Malformations and Rare Intellectual Disability (https://ern-ithaca.eu/)
- MetabERN – European Reference Network for Rare Hereditary Metabolic Disorders (https://metab.ern-net.eu/)
- PaedCan-ERN – European Reference Network for Paediatric Cancer (haemato-oncology) (https://paedcan.ern-net.eu/)
- RARE-LIVER – European Reference Network on Rare Hepatological Diseases (https://rare-liver.eu/)
- RITA – Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases Network (https://ern-rita.org/)
