Cumulative incidence of NRM after GVHD onset, stratified by Paneth cell count. Patients with a mean Paneth cell count per hpf ≥4 (n = 75, solid line) at the time of GI GVHD onset experienced significantly less NRM than the 42 patients (dashed line) with a mean Paneth cell count per hpf <4 (28% vs 56%; P = .004).