- Prior history of cancer, other than MDS, unless the subject has been free of the disease for ≥ 3 years. (Basal or squamous cell carcinoma of the skin, carcinoma in situ of the cervix, carcinoma in situ of the breast, and incidental histologic finding of prostate cancer) (T1a or T1b using the tumor, nodes, metastasis [TNM] clinical staging system is allowed)