Primary Aims 1.1.1 To evaluate whether the addition of vincristine/irinotecan to cyclophosphamide/ carboplatin/etoposide alternating with vincristine/doxorubicin/cyclophosphamide improves the event-free survival (EFS) of patients with newly diagnosed Stage 4 diffuse anaplastic Wilms tumor (DAWT) as compared to historical controls. 1.1.2 To evaluate whether the addition of vincristine/irinotecan to cyclophosphamide/ carboplatin/etoposide alternating with vincristine/doxorubicin/cyclophosphamide improves the EFS of patients with Standard-Risk relapsed favorable histology Wilms tumor (SRrFHWT) as compared to historical controls. Secondary Aims 1.2.1 To evaluate whether the addition of vincristine/irinotecan to cyclophosphamide/ carboplatin/etoposide alternating with vincristine/doxorubicin/cyclophosphamide improves the overall survival (OS) of patients with newly diagnosed Stage 4 DAWT as compared to historical controls. 1.2.2 To evaluate whether the addition of vincristine/irinotecan to cyclophosphamide/ carboplatin/etoposide alternating with vincristine/doxorubicin/cyclophosphamide improves the OS of patients with SRrFHWT as compared to historical controls. 1.2.3 To evaluate whether the addition of vincristine/irinotecan to cyclophosphamide /carboplatin/etoposide alternating with vincristine/doxorubicin/cyclophosphamide improves the EFS and OS of patients with newly diagnosed Stage 2 and 3 DAWT as compared to historical controls. 1.2.4 To establish EFS and OS for High-Risk (HRrFHWT) and Very High-Risk (VHRrFHWT) relapsed favorable histology Wilms tumor treated with ifosfamid
AREN1921 Treatment of Newly Diagnosed Diffuse Anaplastic Wilms Tumors and Relapsed Favorable Histology Wilms Tumors ^*