| Exclusion Criteria: | 1) Post-Transplant Lymphoproliferative Disease (PTLD), Burkitt's lymphoma, Burkitt-like lymphoma, lymphoblastic lymphoma/leukemia, multiple myeloma, or HIV-associated lymphoma;
2) History of or active Central Nervous System (CNS) malignancy
3) Has undergone an allogeneic stem cell transplant and were treated with immunosupressing agent within the past 6 months;
4) Active Graft-versus-host disease (GVHD);
5) Uncontrolled inter-current illness including, but not limited to, ongoing active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements as judged by treating physician. Subjects receiving antibiotics for infections that are under control may be included in the study;
6) Concurrent malignancy, except those subjects with early stage squamous cell carcinoma of the skin, basal cell carcinoma of the skin, or cervical intraepithelial neoplasia are eligible for the study;
7) Known HIV-positive (such subjects are at increased risk of lethal infections when treated with potentially marrow-suppressive therapy);
8) Known active hepatitis A, B, or C;
9) Women who are pregnant or lactating. |