6. Prior malignancy unless disease free for ≥ 3 years. Note: basal cell/squamous carcinoma of the skin, in situ cervical or breast carcinoma, or superficial transitional cell bladder carcinoma will be allowed. Subjects with a history of low risk prostatic carcinoma (ie, clinical stage 1 or 2a, Gleason score < or = 6 and PSA <10 ng/mL at diagnosis) will be allowed