Radioimmunotherapy in Prostate Cancer Using 177Lu-J591 Antibody

There will be 9 groups of patients. The first group will receive 20 units of test drug and the 9th group will receive 55 units of the test drug. The exact dose of the test drug will depend upon how many patients have been included in this protocol at the time of patient enrollment. Patients will receive 20-55 units (or millicuries) of radioactivity depending upon patient specific height and weight. The assignment of each patient for a specific dose level is purely based on the sequence of recruitment basis and does not depend on the clinical status of the patient.