“…Potential benefits of sirolimus include multiple mechanisms for preventing chronic rejection 4,5,6,7 and anticancer 8,9,10,11 and antiaging 10,12 effects. Sirolimus has been an effective rescue therapy in lung transplantation after chronic rejection 7 or skin cancer 13 occurred with other immunosuppressants. The limited extent of prior studies 6,14,15,16 on prophylactic sirolimus use in lung transplantation has led to inconclusive findings, although results were favorable in most studies.…”