Bicalutamide and Goserelin or Leuprolide Acetate With or Without Cixutumumab in Treating Patients With Newly Diagnosed Metastatic Prostate Cancer

PRIMARY OBJECTIVES:

I. To compare the undetectable prostate-specific antigen (PSA) rate (PSA \< 0.2 ng/mL) after seven cycles (28 weeks) of protocol treatment between those randomized to a luteinizing hormone-releasing hormone (LHRH) agonist and bicalutamide and those randomized to a LHRH agonist, bicalutamide and IMC-A12 (cixutumumab).

SECONDARY OBJECTIVES:

I. To assess the safety and tolerability of the combination of IMC-A12 with a LHRH agonist and bicalutamide.

II. To compare the proportion of men who do not achieve a PSA of \< 4 ng/mL between the two groups.

III. To assess the accuracy of the prognostic model of undetectable PSA that was developed from Southwest Oncology Group (SWOG)-9346 using current trial data from each arm.

IV. To assess serum samples and peripheral blood mononuclear cells (PBMNC) for pharmacodynamic activity with potential biomarkers for IMC-A12 (including, but not limited to: insulin-like growth factor \[IGF\]-I, free IGF-I, IGF-II, IGF binding protein \[IGFBP\]2, IGFBP3, growth hormone, insulin and C-peptide) obtained from optional blood specimens both before initiation of androgen deprivation therapy and twelve weeks after initiation of combined therapy.

V. To determine baseline pre-treatment circulating tumor cell (CTC) quantities and response to therapy (for those patients with detectable CTC levels \>= 1) twelve weeks later.

VI. In the same subset of patients where CTC levels are obtained, determine baseline serum levels of micro-ribonucleic acids (RNAs) to include but not limited to microRNA (mi)-141 both before initiation of androgen deprivation therapy and twelve weeks after combined therapy.

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

ARM I: Patients receive androgen deprivation therapy comprising bicalutamide orally (PO) once daily (QD) on days 1-28 and either goserelin acetate subcutaneously (SC) or leuprolide acetate intramuscularly (IM) every 1, 3, 4, 6, or 12 months. Patients also receive cixutumumab intravenously (IV) over 1 hour on days 1 and 15. Treatment repeats every 28 days for 7 courses in the absence of disease progression or unacceptable toxicity.

ARM II: Patients receive androgen deprivation therapy comprising bicalutamide and either goserelin acetate or leuprolide acetate as in arm I.

After completion of study treatment, patients are followed up every 6 months for 2 years and then annually for 3 years.