Phase I Trial and Pharmacokinetic Study of the Farnesyltransferase Inhibitor Tipifarnib in Children With Refractory Solid Tumors or Neurofibromatosis Type I and Plexiform Neurofibromas

Abstract

Oral tipifarnib is well tolerated in children receiving the drug twice daily for 21 days and a continuous dosing schedule at 200 mg/m2/dose, which is equivalent to the MTD in adults. The pharmacokinetic profile of tipifarnib in children is similar to that in adults, and at the MTD, FTase is inhibited in PBMC in vivo.