Vaccine Therapy in Treating Patients With Kidney Cancer

OBJECTIVES:

Primary

- Determine the safety and feasibility of vaccination with human and mouse
prostate-specific membrane antigen (PSMA) DNA in patients with renal cell carcinoma.

- Determine the maximum tolerated dose of this regimen in these patients.

- Determine antibody responses to human PSMA in patients treated with this regimen.

Secondary

- Assess antitumor response in patients treated with this regimen.

OUTLINE: This is a randomized, dose-escalation study. Patients are randomized to 1 of 2
treatment arms.

- Arm I: Patients receive human prostate-specific membrane antigen (PSMA) DNA vaccine
intramuscularly (IM) once every 3 weeks for 3 doses (doses 1-3). Patients then receive
mouse PSMA DNA vaccine IM once every 3 weeks for 3 doses (doses 4-6).

- Arm II: Patients receive mouse PSMA DNA vaccine IM once every 3 weeks for 3 doses (doses
1-3). Patients then receive human PSMA DNA vaccine IM once every 3 weeks for 3 doses
(doses 4-6).

In both arms, treatment continues in the absence of disease progression or unacceptable
toxicity. Patients with stable or responding disease may receive additional booster
vaccinations with the second form of PSMA DNA vaccine received (for doses 4-6) every 8 weeks
for up to 4 additional doses.

Cohorts of 3-6 patients per arm receive escalating doses of human and mouse PSMA DNA vaccine
until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose
preceding that at which 2 of 6 patients experience dose-limiting toxicity.

Patients are followed every 3 months for 2 years.

DISEASE CHARACTERISTICS:

- Histologically confirmed renal cell carcinoma

- Patients with minimal disease burden are eligible provided they meet one or more of
the following criteria:

- Prior nephrectomy and completely resected metastases

- Favorable-risk group, as defined by all of the following criteria:

- Karnofsky 80-100%

- Hemoglobin ≥ 13 g/dL (male) or ≥ 12 g/dL (female)

- Corrected calcium ≤ 10 mg/dL

- Prior nephrectomy

- Serum lactate dehydrogenase ≤ 200 μ/L

- Prior nephrectomy with metastases confined to lung and/or small volume metastatic
disease (< 3 cm) exclusive of bone and liver

- No spinal, epidural, or CNS lesions

- No bone, liver or brain disease

PATIENT CHARACTERISTICS:

Age

- 18 and over

Performance status

- See Disease Characteristics

- Karnofsky 80-100%

Life expectancy

- Not specified

Hematopoietic

- See Disease Characteristics

- WBC ≥ 3,500/mm^3

- Hemoglobin ≥ 12.0 g/dL

- Platelet count ≥ 100,000/mm^3

Hepatic

- Bilirubin < 2.0 mg/dL

- SGOT < 3.0 times upper limit of normal

Renal

- See Disease Characteristics

- Creatinine ≤ 2.0 mg/dL OR

- Creatinine clearance ≥ 40 mL/min

Cardiovascular

- No clinically significant cardiac disease

- No New York Heart Association class III or IV heart disease

Pulmonary

- No severe debilitating pulmonary disease

Other

- Fertile patients must use effective contraception

- No other active secondary malignancy within the past 5 years except non-melanoma skin
cancer

- No infection requiring antibiotic treatment

- No narcotic- or steroid-dependent pain

PRIOR CONCURRENT THERAPY:

Biologic therapy

- Not specified

Chemotherapy

- At least 4 weeks since prior chemotherapy

Endocrine therapy

- At least 4 weeks since prior corticosteroid therapy

Radiotherapy

- At least 4 weeks since prior radiotherapy

- No concurrent radiotherapy to only measurable lesion

Surgery

- See Disease Characteristics

- No concurrent surgery

Other

- Recovered from all prior therapy

- No other concurrent anticancer therapy