The ERICA consortium, uniting all 24 European Reference Networks (ERNs), strives to harness the collective strength of individual ERNs to create an integrated platform for research and innovation. The recent ERICA Conference provided an invaluable opportunity for the ERN research community to come together, share insights, showcase ongoing research projects, and discuss the future direction of ERN-related research initiatives. Lisa Rist from the network coordination team represented ERN-LUNG and came to discuss the poster from the UnDiagnosed Patients Working Group (UDP-WG) on the methodology of developing an undiagnosed respiratory patient pathway with other researchers, patients, clinicians, and project managers.