1.	Prevention of Diarrhea in Patients Taking IV Irinotecan for Relapsed or Difficult to Treat Pediatric Solid Tumors Phase: Phase I Type: Supportive care, Treatment Status: Completed Age: Under 21 Sponsor: NCI, Other Protocol IDs: CPTCEF, NCT00143533
2.	Pilot Study Combining Temozolomide, Oncovin, Camptosar and Oral Antibiotic in Children and Adolescents With Recurrent Malignancy Phase: Phase I Type: Treatment Status: Completed Age: 0 to 21 Sponsor: Other Protocol IDs: JEC Toca One, NCT00222443
3.	Study of ZD1839 Combined With Irinotecan and Vincristine in Pediatric Patients With Refractory Solid Tumors Phase: Phase I Type: Supportive care, Treatment Status: Completed Age: 21 and under Sponsor: NCI, Other Protocol IDs: ZD1839, NCT00186979