A rare autoimmune-disease case series reported sustained remission more than 15 years after a stem-cell transplant. The results were published in the journal Med, describing two patients with a serious autoimmune condition who remained free of disease symptoms for over a decade. Long-term durability is the central point of the report, adding to a limited real-world evidence base for when stem-cell approaches may offer extended benefit rather than temporary disease control. While the dataset is small and not a substitute for randomized comparisons, the 15-year follow-up strengthens the signal that some immunotherapies can produce lasting immune reset in highly selected patients.