A Study of Combination Chemotherapy for Patients With Newly Diagnosed DAWT and Relapsed FHWT

PRIMARY OBJECTIVES:

I. 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.

II. 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 OBJECTIVES:

I. 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.

II. 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.

III. 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.

IV. To establish EFS and OS for high-risk (HRrFHWT) and very high risk (VHRrFHWT) relapsed favorable histology Wilms tumor treated with ifosfamide/carboplatin/etoposide alternating with cyclophosphamide/ topotecan.

EXPLORATORY OBJECTIVES:

I. To describe renal toxicity of ifosfamide/carboplatin/etoposide in HRrFHWT and VHRrFHWT patients using conventional and novel biomarkers of renal toxicity (urine NGAL, cystatin C and Kim1) in the context of the chemotherapy regimens used on this study.

II. To collect and bank serial blood and urine samples in patients with newly diagnosed DAWT or relapsed FHWT and tumor tissue in patients with relapsed FHWT, for future analysis.

III. To assess the impact of p53 gene and protein expression on outcome for patients with newly diagnosed DAWT.

IV. To determine EFS/OS in the subsets of patients with newly diagnosed DAWT or relapsed FWHT who undergo gross total resection at all disease sites at diagnosis or after neoadjuvant chemotherapy.

V. To describe the rate of regional lymph node sampling at the time of nephrectomy with the use of a pre-operative surgical checklist for patients with newly diagnosed DAWT.

VI. To determine the feasibility of intensity modulated radiation therapy (IMRT) with central quality assurance (QA) monitoring to reduce radiation induced toxicity to the heart, thyroid, breast and solitary kidney for children with lung and liver metastases (part of an overarching aim in this study and across frontline favorable histology Wilms tumor studies).

VII. To validate that circulating tumor-derived deoxyribonucleic acid (ctDNA) can identify high-risk genomic features, define prognostic risk groups, and identify patterns of tumor evolution associated with the development of treatment resistance.

OUTLINE: Patients are assigned to 1 of 2 arms.

ARM I (REGIMEN UH-3):

CYCLES 1, 5, 7, 10, AND 13: Patients receive vincristine intravenously (IV) via minibag per institutional policy on days 1, 8, and 15. Patients also receive doxorubicin IV over 1-15 minutes and cyclophosphamide IV over 30-60 minutes on day 1. Treatment repeats every 21 days during cycles 1, 5, 7, 10, and 13 in the absence of disease progression or unacceptable toxicity.

CYCLES 2, 6, 9, 12, AND 14: Patients receive carboplatin IV over 15-60 minutes on day 1. Patients also receive cyclophosphamide IV over 15-30 minutes and etoposide IV over 1-2 hours on days 1-4. Treatment repeats every 21 days during cycles 2, 6, 9, 12, and 14 in the absence of disease progression or unacceptable toxicity.

CYCLES 3, 4, 8, AND 11: Patients receive vincristine IV via minibag per institutional policy on days 1 and 8 and irinotecan IV over 90 minutes on days 1-5. Treatment repeats every 21 days during cycles 3, 4, 8, and 11 in the absence of disease progression or unacceptable toxicity.

Patients undergo radiation therapy (RT) at week 7 of cycle 3 as clinically indicated. Patients undergo a computed tomography (CT) scan, a positron emission tomography (PET) scan, a chest x-ray, magnetic resonance imaging (MRI), an abdominal ultrasound, and/or a bone scan throughout the trial. Patients may also undergo blood specimen collection and biopsy throughout the trial.

ARM II (REGIMEN IFOSFAMIDE, CARBOPLATIN, ETOPOSIDE [ICE]/CYCLOPHOSPHAMIDE [CYCLO]/TOPOTECAN [TOPO]):

CYCLES 1, 2, 4, 5, 7, AND 9: Patients receive carboplatin IV over 15-60 minutes on day 1. Patients also receive etoposide IV over 1-2 hours and ifosfamide IV over 2-4 hours on days 1-3. Treatment repeats every 21 days during cycles 1, 2, 4, 5, 7, and 9 in the absence of disease progression or unacceptable toxicity.

CYCLES 3, 6, 8, AND 10: Patients receive cyclophosphamide IV over 15-30 minutes and topotecan IV over 30 minutes on days 1-5. Treatment repeats every 21 days during cycles 3, 6, 8, and 10 in the absence of disease progression or unacceptable toxicity.

Patients undergo surgery and/or RT during cycles 4, 7, and 10 as clinically indicated. Patients undergo a CT scan, a PET scan, a chest x-ray, MRI, an abdominal ultrasound, and/or a bone scan throughout the trial. Patients may also undergo blood specimen collection and biopsy throughout the trial.

After completion of study treatment, patients are followed up every 3 months for years 1-2, every 6 months for years 3-4, and once at year 5.

Inclusion criteria

• Patients with newly diagnosed stages 2 - 4 diffuse anaplastic Wilms tumor must be enrolled on APEC14B1, consented to Part A - Eligibility Screening, and have received an initial stratum assignment showing DAWT (if anaplasia first identified at diagnostic, pre-treatment nephrectomy or biopsy) or a final stratum assignment showing DAWT (if anaplasia first noted at delayed nephrectomy) prior to enrollment on AREN1921. Prior enrollment on APEC14B1 is not an eligibility requirement for patients with relapsed favorable histology Wilms tumor.
• Patients must be =< 30 years old at study enrollment
• Patients with the following diagnoses are eligible for this study:

• Newly diagnosed stages 2 - 4 diffuse anaplastic Wilms tumor as confirmed by central review
• Favorable histology Wilms tumor at first relapse. Relapsed FHWT patients must have previously achieved remission for their initial FHWT diagnosis to be eligible for this study. The relapse risk groups are defined as follows, regardless of radiation therapy:

• Standard-Risk relapse: Patients who received two chemotherapy agents for frontline therapy; primarily actinomycin D and vincristine
• High-Risk relapse: Patients who received three chemotherapy agents for frontline therapy; primarily vincristine, actinomycin D and doxorubicin or vincristine, actinomycin D and irinotecan
• Very High-Risk relapse: Patients who received four or more chemotherapy agents as part of initial therapy; primarily regimen M or its variations
• Patients with newly diagnosed DAWT must have had histologic verification of the malignancy. For relapsed FHWT patients, biopsy to prove recurrence is encouraged, but not required

• Note: For relapsed FHWT patients, an institutional pathology report confirming favorable histology Wilms tumor (from relapse, if available, or from original diagnosis) must be available for upload prior to initiation of protocol therapy
• Patients with newly diagnosed Stages 2 - 4 diffuse anaplastic Wilms tumor must be enrolled on AREN1921 within 2 weeks of the tumor-directed surgery or biopsy procedure that first confirms a diagnosis of DAWT, whether at initial diagnostic procedure or delayed nephrectomy (such surgery/biopsy is day 0). For patients who received prior therapy for presumed favorable histology Wilms tumor, later confirmed to have diffuse anaplastic Wilms tumor at subsequent review of the initial biopsy
• Patients with newly diagnosed DAWT who undergo upfront nephrectomy must have at least 1 lymph node sampled prior to study enrollment
• Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1 or 2. Use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age
• Patients must have a life expectancy of >= 8 weeks
• Diffuse Anaplastic Wilms Tumor: Patients with diffuse anaplastic histology must have had no prior systemic therapy, except in the following situations:

• Patients with diffuse anaplastic Wilms tumor who received no more than 12 weeks of pre nephrectomy chemotherapy for what was originally presumed to be favorable histology Wilms tumor, subsequently confirmed to be diffuse anaplastic Wilms tumor at delayed nephrectomy
• Patients with diffuse anaplastic Wilms tumor who received no more than 6 weeks of chemotherapy following upfront biopsy, initiated within 14 days of biopsy, for presumed favorable histology Wilms tumor based on institutional review, but subsequently corrected to diffuse anaplastic Wilms tumor based on the initial stratum assignment on APEC14B1-REN
• Treatment consisting of vincristine/doxorubicin/cyclophosphamide initiated on an emergent basis and within allowed timing as described
• Note: Patients who received prior therapy for presumed favorable histology Wilms tumor, later identified to have diffuse anaplastic Wilms tumor as per above, must begin study treatment starting at cycle 3 (week 7) of regimen UH 3. Patients who received emergency radiation to preserve organ function are eligible as noted. Patients who received radiation as part of standard of care for presumed newly diagnosed favorable histology Wilms tumor, along with chemotherapy as noted above, prior to identification of diffuse anaplasia, are also eligible
• Relapsed Favorable Histology Wilms Tumor: Patients must not have received prior chemotherapy for their relapsed favorable histology Wilms tumor diagnosis. In addition, patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study

• Myelosuppressive chemotherapy: Must not have received within 2 weeks of entry onto this study
• Radiation therapy (RT): >= 2 weeks (wks) must have elapsed for local palliative RT (small port); >= 6 months must have elapsed if prior craniospinal RT or if >= 50% radiation of pelvis; >= 6 wks must have elapsed if other substantial bone marrow (BM) radiation. Patients with relapsed favorable histology Wilms tumor who received emergency radiation to preserve organ function are eligible and do not need to washout with the above criteria
• Patients may not be receiving any other investigational agents (within 4 weeks prior to study enrollment)
• Peripheral absolute neutrophil count (ANC) >= 750/uL (performed within 7 days prior to enrollment)
• Platelet count >= 75,000/uL (transfusion independent) (performed within 7 days prior to enrollment)
• Hemoglobin >= 8.0 g/dL (may receive red blood cell [RBC] transfusions) (performed within 7 days prior to enrollment)
• Patients with high-risk or very high-risk relapsed FHWT who will be treated with regimen ICE/Cyclo/Topo, must have renal function assessed by creatinine clearance or radioisotope glomerular filtration rate (GFR) and meet the following requirement:

• Creatinine clearance or radioisotope GFR >= 60 mL/min/1.73 m^2 (performed within 7 days prior to enrollment)
• Patients diagnosed with stage 2-4 DAWT or standard risk relapsed FHWT, who will be treated with regimen UH 3, may either obtain a creatinine clearance, radioisotope GFR (meeting the above criteria of GFR >= 60 mL/min/1.73 m^2), or an adequate serum creatinine as per the following table:

• Age: Maximum Serum Creatinine (mg/dL)
• 1 month to < 6 months: 0.4 (male and female)
• 6 months to < 1 year: 0.5 (male and female)
• 1 to < 2 years: 0.6 (male and female)
• 2 to < 6 years: 0.8 (male and female)
• 6 to < 10 years: 1 (male and female)
• 10 to < 13 years: 1.2 (male and female)
• 13 to < 16 years: 1.5 (male), 1.4 (female)
• >= 16 years: 1.7 (male), 1.4 (female)
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age or direct bilirubin =< ULN for patients whose total bilirubin > 1.5 x ULN (performed within 7 days prior to enrollment)
• Serum glutamic-oxaloacetic transaminase (SGOT) (aspartate aminotransferase [AST]) or serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) < 2.5 x upper limit of normal (ULN) for age or =< 5 x ULN for patients with liver metastases (performed within 7 days prior to enrollment)
• Shortening fraction of >= 27% by echocardiogram, or ejection fraction of >= 50% by radionuclide angiogram (obtained within 21 days prior to enrollment and start of protocol therapy)

Exclusion criteria

• Patients with a history of bilateral Wilms tumor (synchronous or metachronous)
• Patients with any uncontrolled, intercurrent illness including, but not limited to, ongoing or active infection, or symptomatic congestive heart failure (defined as grade 2 or higher heart failure per Common Terminology Criteria for Adverse Events [CTCAE] version 5.0)
• Relapsed FHWT patients who did not receive frontline chemotherapy (e.g., very low risk FHWT initially observed without chemotherapy) or received only one chemotherapy agent for frontline therapy
• For patients with high-risk or very high-risk relapsed FHWT:

• Patients with renal tubular acidosis (RTA) as evidenced by serum bicarbonate < 16 mmol/L and serum phosphate =< 2 mg/dL (or < 0.8 mmol/L) without supplementation
• For stages 2-4 DAWT and standard-risk relapsed FHWT patients:

• Chronic inflammatory bowel disease and/or bowel obstruction
• Concomitant use of St. John's wort, which cannot be stopped prior to the start of trial treatment
• Female patients who are pregnant since fetal toxicities and teratogenic effects have been noted for several of the study drugs. A pregnancy test is required for female patients of childbearing potential
• Lactating females who plan to breastfeed their infants
• Sexually active patients of reproductive potential who have not agreed to use an effective contraceptive method for the duration of their study participation