- Stratum 4 (stage III FH Wilms' tumor; stage II or III FA Wilms' tumor): After nephrectomy, patients receive regimen DD-4A comprising DACT IV weekly on weeks 0, 6, 12, 18, and 24; doxorubicin IV weekly on weeks 3, 9, 15, and 21; and VCR IV weekly on weeks 1-10, 12, 15, 18, 21, and 24. Patients also undergo abdominal radiotherapy.