We located INFLAREs (MUC6+AQP5+BPIFB1+) at the crypt base and surface foveolar cells (MUC5AC+) at the crypt top of metaplastic glands in Crohn’s disease mucosa (Fig. 3f–h and Extended Data Fig. 7g,h). The gene discussed is BPIFB1; the disease is Crohn disease.