Severe Bone Marrow Failure Due to Valganciclovir Overdose After Renal Transplantation From Cadaveric Donors: Four Consecutive Cases Ar MC et al. - Valganciclovir is an l-valyl ester pro-drug of ganciclovir that was initially used to treat cytomegalovirus (CMV)–associated retinitis in patients with human immunodeficiency virus. Currently, it is also indicated for the prevention of CMV disease in solid-organ transplantation. This report demonstrates the in vivo pharmacodynamics of valganciclovir overdose in terms of hematotoxicity in the setting of renal impairment. Valganciclovir, as its derivative ganciclovir, should be used cautiously in patients with renal impairment. [more...]