Aldesleukin With or Without Ziv-Aflibercept in Treating Patients With Stage III-IV Melanoma That Cannot Be Removed by Surgery

PRIMARY OBJECTIVES:

I. Test the hypothesis that combination biotherapy with aflibercept (ziv-aflibercept) and
high-dose (HD) interleukin (IL)-2 (aldesleukin) will improve the progression-free survival
compared to HD IL-2 alone.

SECONDARY OBJECTIVES:

I. Evaluate the response rate (complete response [CR] + partial response [PR]) of aflibercept
and HD IL-2 as assessed by Response Evaluation Criteria In Solid Tumors (RECIST) criteria
version 1.1 and compare to results of HD IL-2 alone.

II. Evaluate the toxicities and tolerance of combination biotherapy with aflibercept and HD
IL-2 and maintenance aflibercept alone in this patient population and compare to HD-IL2
alone.

III. Test the hypotheses related to the laboratory correlative studies. IV. Evaluate the
overall survival of patients treated with aflibercept and HD IL-2 and HD IL-2 alone.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive ziv-aflibercept intravenously (IV) over at least 1 hour on day 1 of
weeks 1, 3, 5, and 7 (and in week 9 of course 1 only) and high-dose aldesleukin IV over 15
minutes every 8 hours for 5 days in weeks 1 and 3 (and in weeks 3 and 5 of course 1 only).
Treatment repeats every 8 weeks for 3 courses in the absence of disease progression or
unacceptable toxicity. Patients then receive maintenance therapy comprising ziv-aflibercept
IV on day 1. Courses repeat every 14 days in the absence of disease progression or
unacceptable toxicity.

ARM II: Patients receive high-dose aldesleukin IV over 15 minutes every 8 hours for 5 days in
weeks 1 and 3. Treatment repeats every 4 weeks for up to 3 courses in the absence of disease
progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3-4 months for 5 years.

Inclusion Criteria:

- Patients must have histologically or cytologically confirmed metastatic melanoma
(includes American Joint Committee on Cancer [AJCC] stage IV or advanced/inoperable
stage III; also includes patients with a history of lower stage melanoma and
subsequent recurrent metastatic disease that is either locally/regionally
advanced/inoperable disease or distant metastases)

- Patients must have measurable disease, defined as at least one lesion that can be
accurately measured in at least one dimension (longest diameter to be recorded) as >
10 mm with computed tomography (CT) scan or clinically (must be measurable with
calipers) according to RECIST version 1.1

- Patients must be free of brain metastasis by contrast-enhanced CT/magnetic resonance
imaging (MRI) scans within 4 weeks prior to enrollment; if known to have prior brain
metastases, must not have evidence of active brain disease after definitive therapy
(surgery, radiation therapy, or stereotactic radiosurgery) on two successive MRI
evaluations at least 3 months apart (one of which is =< 4 weeks prior to starting the
study drugs)

- A patient may be treatment naïve; however, up to two prior regimens for metastatic
melanoma are allowed; prior adjuvant interferon (IFN)-alpha is allowed; no prior
therapy with bevacizumab, aflibercept or interleukin-2 (IL-2)

- Patients must not have received systemic therapy or radiotherapy within the preceding
4 weeks; patients must have recovered from adverse events due to agents administered
more than 4 weeks earlier

- Patients must be at least 4 weeks from major surgery and have fully recovered from any
effects of surgery, and be free of significant detectable infection

- For patients who have received prior anti-cytotoxic T-lymphocyte antigen (CTLA)4
monoclonal antibody therapy (ipilimumab or tremelimumab), there is a risk of bowel
perforation with IL-2 therapy; therefore, for these patients if they have a history of
colitis or diarrhea during anti-CTLA4 monoclonal antibody therapy, they should have a
formal evaluation by a gastroenterologist and a colonoscopy should be considered to
demonstrate the absence of active bowel inflammation before initiating IL-2 therapy on
this protocol

- Life expectancy of greater than 3 months in the opinion of the investigator

- Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1 (Karnofsky > 70%)

- Leukocytes >= 3,000/mcL

- Absolute neutrophil count >= 1,500/mcL

- Platelets >= 100,000/mcL

- Total bilirubin within 1.5 x institutional upper limit of normal

- Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase
[SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT])
=< 2.5 x institutional upper limit of normal

- Creatinine within 1.5 x institutional upper limit of normal OR creatinine clearance >=
60 mL/min/1.73 m^2 for patients with creatinine level above institutional normal

- Urine protein should be screened by urinalysis for urine protein creatinine ratio
(UPCR); for UPCR > 1, a 24-hour urine protein should be obtained and the level should
be < 500 mg

- Patients on full-dose anticoagulants (e.g., warfarin) with prothrombin time (PT)
international normalized ratio (INR) > 1.5 are eligible provided that both of the
following criteria are met:

- The patient has an in-range INR (usually between 2 and 3) on a stable dose of
oral anticoagulant or on a stable dose of low molecular weight heparin

- The patient has no active bleeding or pathological condition that carries a high
risk of bleeding (e.g., tumor involving major vessels or known varices)

- Forced expiratory volume (FEV) 1 > 2.0 liters or > 75% of predicted for height and age
(pulmonary function test [PFTs] are required for patients over 50 years old or with
significant pulmonary or smoking history)

- No evidence of congestive heart failure, symptoms of coronary artery disease,
myocardial infarction less than 6 months prior to entry, serious cardiac arrhythmias,
or unstable angina

- Patients who are over 40 years old or have had previous myocardial infarction
greater than 6 months prior to study entry or have significant cardiac family
history (coronary artery disease [CAD] or serious arrhythmias) will be required
to have a negative or low probability cardiac stress test (for example, thallium
stress test, stress multi-gated acquisition scan [MUGA], stress echocardiography
[echo], or exercise stress test) for cardiac ischemia within 8 weeks prior to
registration

- An echocardiogram should be performed at baseline in all patients; ejection
fraction (EF) from baseline echocardiogram must be within the institutional
limits of normal as determined by the reading cardiologist; if the baseline
cardiac stress test incorporates an echocardiogram, then this will not need to be
done again at baseline

- No history of cerebrovascular accident or transient ischemic attacks within the past 6
months

- Women of child-bearing potential and men must agree to use adequate contraception
(hormonal or barrier method of birth control; abstinence) prior to study entry, for
the duration of study participation, and for at least 6 months after completion of
study therapy; should a woman become pregnant or suspect she is pregnant while
participating in this study, she should inform her treating physician immediately

- Women should not be lactating and, if of childbearing age, should have a negative
pregnancy test (beta-human chorionic gonadotropin [b-HCG] test; serum or urine,
minimum sensitivity 25 IU/L or equivalent units of b-HCG) within two week of
registration in the study

- Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

- Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for
nitrosoureas or mitomycin C) prior to entering the study or those who have not
recovered from adverse events due to agents administered more than 4 weeks earlier

- Patients may not be receiving any other investigational agents

- Patients with brain metastases should be excluded from this clinical trial except as
noted above

- Patients with known hypersensitivity to Chinese hamster ovary cell products or other
recombinant human antibodies, and patients with a history of allergic reactions
attributed to compounds of similar chemical or biologic composition to other agents
used in the study

- Serious or non-healing wound, ulcer, or bone fracture

- History of abdominal fistula, gastrointestinal perforation, or intra-abdominal abscess
within 28 days of treatment

- Patients with the following invasive procedures:

- Major surgical procedures, open biopsy or significant traumatic injury within 28
days prior to day 1 therapy

- Anticipation of need for major surgical procedures during the course of the study

- Minor surgical procedures, fine needle aspirations or core biopsies within 7 days
prior to day 1 of therapy; central venous catheter placements are permitted to be
completed 7 or more days prior to day 1 of therapy; however, peripherally
inserted central catheter (peripherally inserted central catheter [PICC] or PIC
line) may be placed at any time prior to or during therapy

- Patients with clinically significant cardiovascular or cerebrovascular disease:

- History of cerebrovascular accident or transient ischemic attack within past 6
months

- Uncontrolled hypertension, defined as blood pressure > 150/100 mm Hg or systolic
blood pressure (BP) > 180 mm Hg if diastolic blood pressure < 90 mm Hg, on at
least 2 repeated determinations on separate days within past 3 months

- Myocardial infarction, coronary artery bypass graft (CABG) or unstable angina
within the past 6 Months

- New York Heart Association grade III or greater congestive heart failure, serious
cardiac arrhythmia requiring medication, unstable angina pectoris within past 6
months

- Clinically significant peripheral vascular disease within past 6 months

- Pulmonary embolism, deep vein thrombosis (DVT), or other thromboembolic event
within past 6 months

- History of tumor-related or other serious hemorrhage, bleeding diathesis, or
underlying coagulopathy

- PT INR > 1.5 unless the patient is on full-dose warfarin

- Uncontrolled intercurrent illness including, but not limited to, ongoing or active
infection or psychiatric illness/social situations that would limit compliance with
study requirements

- Human immunodeficiency virus (HIV)-positive patients on combination antiretroviral
therapy are ineligible

- Patients who have other current malignancies are not eligible; patients with other
malignancies are eligible if they have been continuously disease free for > 5 years
prior to the time of randomization; patients with prior history at any time of any in
situ cancer, lobular carcinoma of the breast in situ, cervical cancer in situ,
atypical melanocytic hyperplasia, or melanoma in situ are eligible; patients with a
prior history of basal cell or squamous cell skin cancer are eligible; patients who
have had multiple primary melanomas are eligible

- Patients must not have autoimmune disorders or conditions of immunosuppression that
require current ongoing treatment with systemic corticosteroids (or other systemic
immunosuppressants), including oral steroids (i.e., prednisone, dexamethasone) or
continuous use of topical steroid creams or ointments or ophthalmologic steroids or
steroid inhalers

- If a patient had been taking steroids, at least 2 weeks must have passed since
the last dose