Chronic liver graft-versus-host disease in allogeneic hematopoietic stem cell transplantation recipients during tapering or after stopping calcineurin inhibitors.

Chronic graft-versus-host disease (cGVHD) of the liver is often observed in allogeneic hematopoietic stem cell transplantation (allo-HSCT) during tapering or after stopping calcineurin inhibitors (CI). We conducted a retrospective analysis of 242 allo-HSCT recipients whose CI dose was reduced to less than 40 mg of cyclosporin A or 0.4 mg of tacrolimus to clarify the clinical characteristics of liver GVHD in patients on low-dose CI. Sixty patients (25%) developed clinically suspected liver cGVHD while on low-dose CI. Multivariate analysis showed that donor age ≥ 40 years [hazard ratio (HR) 2.20], myeloablative conditioning (HR 2.19), female donor to male recipient (HR 2.53) and recipient seropositivity for herpes simplex virus (HR 2.52) were significant risk factors for liver cGVHD during low-dose CI period. Peak aspartate aminotransferase and alanine aminotransferase levels were higher in patients with liver GVHD during low-dose CI period than in other periods. Twenty-seven patients were initially treated with resumption of CI or a CI dose increase and 21 responded. Among the 18 patients treated with corticosteroids, total bilirubin was a risk factor for failure of corticosteroid therapy. The results of this study clarified the clinical characteristics of liver GVHD in patients on low-dose CIs.