Study of Sutent®/Sunitinib (SU11248) in Subjects With NF-1 Plexiform Neurofibromas

Upon enrollment, subjects will receive Sutent® orally. Adults (Age \>18) will receive 25mg. Children will receive 10mg/m2/day. All subjects will take the daily dose for 28 days followed by a 14 day rest period. If subjects tolerate the initial dose, adults will be increased to 37.5mg and children will be increased to 15mg/m2/day. Again, subjects will take that dose for 28 days followed by a rest period of 14 days. Adults who tolerate the increase will go up to the maximum dose of 50mg. The maximum dose for children is 15mg/m2/day.