sEphB4-HSA Before Surgery in Treating Patients With Bladder Cancer, Prostate Cancer, or Kidney Cancer

PRIMARY OBJECTIVES:

I. To determine the feasibility of, and adverse events associated with, treatment with
soluble ephrin type-B receptor 4 (sEphB4)-human serum albumin (HSA) (recombinant EphB4-HSA
fusion protein) prior to minimally invasive robotic surgery in patients with either
muscle-invasive transitional cell carcinoma of the bladder; clear cell renal cell carcinoma
(4 cm or greater); or prostate cancer Gleason (7 or under).

SECONDARY OBJECTIVES:

I. To determine tumor response to neoadjuvant sEphB4 as measured by imaging response and
pathologic response.

TERTIARY OBJECTIVES:

I. To evaluate the expression of ephrin type-B receptor 4 (EphB4) and eph-related receptor
tyrosine kinase ligand 5 (EphrinB2) in the archival tumor samples and explore potential
associations with outcome.

II. To bank specimens for future correlative biomarker studies based on the results of
ongoing biomarkers analyses in the phase I of sEphB4-HSA as a single agent.

III. To evaluate changes in deoxyribonucleic acid (DNA) methylation of the surgical specimen
after being treated with sEphB4-HSA.

IV. To evaluate the infiltration of immune cells into the tumor due to administering
sEphB4-HSA.

V. To evaluate the impact sEphB4-HSA has on vessel density on the tumor tissue. VI. To assess
the applicability of using sEphB4-HSA for treating genitourinary cancers.

VII. To assess the applicability of using contrast-enhanced ultrasound imaging for
determining pathological complete response (pCR) rate.

OUTLINE:

Patients receive recombinant EphB4-HSA fusion protein intravenously (IV) over 60 minutes once
weekly for 3 weeks (3 doses) in the absence of disease progression or unacceptable toxicity.
Patients who agree may receive the fourth dose after an additional week as determined by the
study medical oncologist. Two to four weeks after the last dose of recombinant EphB4-HSA
fusion protein, patients undergo robotic-assisted radical cystectomy or robotic-assisted
radical or partial nephrectomy.

After completion of study treatment, patients are followed up for 30 days.

Inclusion Criteria:

- Written informed consent and Health Insurance Portability and Accountability Act
(HIPAA) authorization for release of personal health information

- NOTE: HIPAA authorization may be included in the informed consent or obtained
separately

- Eastern Cooperative Oncology Group (ECOG) performance status of =< 1 within 14 days
prior to being registered for protocol therapy

- Females of childbearing potential and males must be willing to use an effective method
of contraception (hormonal or barrier method of birth control; abstinence) from the
time consent is signed until 4 weeks after treatment discontinuation

- Females of childbearing potential must have a negative pregnancy test within 7 days
prior to being registered for protocol therapy

- NOTE: Subjects are considered not of child bearing potential if they are
surgically sterile (they have undergone a hysterectomy, bilateral tubal ligation,
or bilateral oophorectomy) or they are postmenopausal

- Females must not be breastfeeding

- Cohort A - T2, Transitional cell carcinoma (TCC) muscle invasive bladder cancer,
(patients who are cisplatin ineligible, decline neoadjuvant and/or ineligible for
neoadjuvant chemotherapy); must have histological proof of T2, muscle-invasive
transitional cell carcinoma of the bladder with no evidence of metastatic; patient
with any degree of fixation of the pelvic sidewall are not eligible

- Cohort B - Prostate cancer (Gleason 7 or less); must have histological proof of
Gleason =< 7 with no evidence of metastatic disease (patient with any degree of
extra-prostatic capsule extension are not eligible

- Cohort C - Renal cell carcinoma (> pT1b); must have radiologic suspicion or
histological proof of clear cell renal cell carcinoma >= 4 cm with no evidence of
metastatic disease; patient with any degree of tumor extension into the renal vein are
not eligible; patients must be candidates for contrast-enhanced ultrasound (CEUS)
imaging and agree to undergo this additional imaging technique

- Patients must be willing to undergo a biopsy of the cancerous tissue if one was not
taken within the previous year, prior to drug initiation if tumor block is not
available; biopsy must be done within 14 days of first planned drug dose

- Patients must be willing to undergo a radiologic scan (computed tomography [CT] or
magnetic resonance imaging [MRI], depending on organ involved) after last drug dose
and prior to minimally-invasive surgery

- Eligible for:

- Cohort A: Robot-assisted radical cystectomy (RARC) as per the attending urologist

- Cohort B: Robot-assisted radical Nephrectomy (RARN)/robot-assisted partial
nephrectomy (RAPN) as per the attending urologist

- Cohort C: RAPN as per the attending urologist

- No prior malignancy is allowed except for adequately treated basal cell or squamous
cell skin cancer, in situ cervical cancer, or other cancers for which the patient has
been disease-free for at least 5 years

- No treatment with any investigational agent within 30 days prior to being registered
for protocol therapy

- No prior systemic chemotherapy for transitional cell carcinoma of the bladder (prior
intravesical therapy is allowed); any other prior chemotherapy must have been
completed > 5 years prior to initiation of therapy

- Prior radiation therapy is allowed provided that no radiation therapy was administered
to the urinary bladder

- NOTE: No radiation therapy within 28 days prior to being registered for protocol
therapy; laboratory values must be obtained within 14 days prior to being
registered for protocol therapy

- Total bilirubin < 2.0 X upper limit of normal (ULN)

- Aspartate aminotransferase (AST) =< 2.5 X ULN

- Alanine aminotransferase (ALT) =< 2.5 X ULN

- Serum Creatinine < 2.5 X ULN

- Absolute neutrophil count (ANC) > 1.5 X K/mm^3

- Platelets > 100 K/mm^3

- International normalized ratio (INR) =< 1.2

- There are currently no known concomitant medications that must be discontinued prior
to administration of registration on study and for the duration of sEphB4-HSA

- No clinically significant infections as judged by the treating investigator

- No pleural or pericardial effusion of any grade

- No uncontrolled angina, congestive heart failure or myocardial infraction (MI) within
6 months prior to registration on study

- No diagnosed arrhythmias

- No abnormalities on pre-entry electrocardiogram, obtained within 28 days prior to
being registered on study

- No history of diagnosed congenital bleeding disorders (e.g., von Willebrand's disease)

- No abnormalities no history of diagnosed acquired bleeding disorders within one year
(e.g., acquired anti-factor VIII antibodies) of registration on protocol therapy

- No abnormalities no history of ongoing or recent (less than or equal to 3 months of
registration on protocol therapy) significant gastrointestinal bleeding

- No ongoing anti-coagulation and/or anti-platelet therapies allowed

- Patients with diagnosed uncontrolled hypertension (> 150/90 mmHg) are to be excluded

- Patients with hypertension controlled with medications are allowed

- No evidence of gross hematuria

- No evidence of hydronephrosis

- No evidence of a history of a stroke or myocardial infarction within the last 6 months
prior to study enrollment

- No evidence of a history of wound healing complications prior to study enrollment