For preventing rejection of cardiac transplants in children, the combination of everolimus and low-dose tacrolimus should now be considered an alternative to mycophenolate mofetil (MMF) plus standard-dose tacrolimus, according to the first phase 3 trial to compare antirejection strategies in the pediatric setting.
Even though MMF and tacrolimus have never been evaluated for pediatric cardiac transplant in a controlled trial, this combination is widely considered a standard based on adult data, said Christopher Almond, MD, a professor of pediatric cardiology at Stanford (Calif.) Medicine.
Everolimus has not been widely used in an antirejection regimen in children following heart transplant in part because of a boxed warning. The warning was added to labeling when this agent was associated with increased infection and increased mortality in adults if given within 3 months of transplant.
In this non-inferiority trial, called TEAMMATE, patients were randomized to the MMF-based or everolimus-based regimen 6 months after transplant.
Everolimus- vs. MMF-based antirejection
The study enrolled 210 children and adolescents 21 years of age or younger. The control arm treatment consisted of MMF (660 mg/m2 every 12 hours) plus standard dose of tacrolimus (initially 7-10 ng/mL followed at 6 months by 5-8 ng/mL).
In the experimental arm, patients received everolimus (3-8 ng/mL) plus a low dose of tacrolimus (initially 3-5 ng/mL followed at 6 months by 2.5-4.5 ng/mL).
