Background. Mycophenolate mofetil (MMF) is a new immunosuppressive age
nt that is gaining widespread use in solid organ transplantation recip
ients. A comprehensive assessment of infectious complications after it
s use after liver transplantation has never been assessed, Methods, Ba
cterial, fungal, and viral infections occurring after transplantation
were compared for a cohort of consecutive liver transplant recipients
who received MMF (because of suspected tacrolimus-related nephrotoxici
ty or neurotoxicity) and a cohort who did not receive the drug. All pa
tients received a tacrolimus-based primary immunosuppressive protocol,
Results, Biopsy-proven acute rejection episodes within the first 6 mo
nths after transplant occurred in 6% of MMF-treated patients but in 30
% of those who did not receive MMF (P=0.07), No significant difference
s were found in occurrence of cytomegalovirus infection or disease, Pn
eumocystis carinii, Aspergillus, or other fungal infection and hepatit
is C virus recurrence between MMF-treated and untreated patients, Bact
erial infections were more common in MMF-treated patients, but this co
hort had a prolonged intensive care unit stay compared with patients w
ho did not receive MMF. None of the MMF-treated patients with bacteria
l infection had leukopenia, Conclusions. MMF use does not appear to be
associated with an significantly increased risk of infection occurrin
g after liver transplantation and is associated with fewer episodes of
acute rejection.