Study of Vitespen (HSPPC-96, Oncophage ®) for Immune Response Assessment in Participants With Resectable Renal Cell Carcinoma at Intermediate Risk of Recurrence

A Phase 2, Multicenter, Randomized, Single-Blind Study of Vitespen (HSPPC-96, Oncophage) for Immune Response Assessment Following Treatment of Patients With Resectable Renal Cell Carcinoma at Intermediate Risk of Recurrence

The primary objective of the study is to determine whether participants exhibit a measurable immune response after multiple administrations of HSPPC-96 (heat shock protein-peptide complex 96), as assessed by enzyme linked immunosorbent spot (ELISPOT) assay.

The study consists of two parts: Part 1 with Part 1a (Assessment of Immune Variation) and Part 1b (Assay Standardization), and Part 2 (Immune Monitoring Study). The study was terminated early with 12 participants enrolled only in Part 1a and Part 1b. Part 2 of the study involved randomization after 8 doses of HSSPC-96. After the 8 doses of HSSPC-96 administered in Part 2, the participants were to be randomized to the treatment extension arm or the placebo extension arm. There were no participants enrolled in Part 2 since the study was terminated early. Therefore, no randomization occurred in the conduct of this study and only a single arm was enrolled.

Inclusion Criteria:

• Confirmation of histological diagnosis of renal cell carcinoma (RCC) with evidence of >= 25% clear cell carcinoma
• American joint committee on cancer tumor/node/metastasis tumor stage at intermediate risk for recurrence
• At least 8 doses of vaccine available from participant's tumor
• Life expectancy of at least 3 months
• Eastern cooperative oncology group performance status of 0 or 1
• Cardiovascular disease status of new york heart association class less than 2
• Adequate hematopoietic, renal and hepatic function
• Negative serology tests for human immunodeficiency virus (HIV), human T-cell lymphotrophic virus (HTLV-1), hepatitis B surface antigen (HBsAg), anti- hepatitis C virus antibodies (anti-HCV-Ab)
• Females must have negative pregnancy test

Exclusion Criteria:

• Evidence of metastatic or residual RCC
• Documented radiological enlarged lymph nodes
• Females who are pregnant or breastfeeding
• Use of any other investigational product from 4 weeks post-surgery
• Splenectomy performed during nephrectomy