Shorter Course Tacro After NMA, Related Donor PBSCT With High-dose Posttransplant Cy for Hard-to-Engraft Malignancies

Inclusion Criteria: * Presence of a suitable related HLA-haploidentical or -matched stem cell donor, or a 10/10 matched unrelated donor * Eligible diagnoses: myelodysplastic syndrome (MDS) with at least 1 poor-risk feature; small lymphocytic lymphoma (SLL) or chronic lymphocytic leukemia (CLL) with 17p deletion or with progression \< 6 months after a second or greater treatment regimen; T-cell prolymphocytic leukemia (PLL) in partial response or better; interferon- or tyrosine-kinase-refractory chronic myeloid leukemia (CML), or CML in second or subsequent chronic phase; Philadelphia chromosome negative (Ph-) myeloproliferative disease, including myelofibrosis; Multiple myeloma or plasma cell leukemia in partial response or better; Hematologic malignancy in complete remission with minimal residual disease (MRD) detectable by conventional cytogenetics, FISH, flow cytometry, or molecular testing * Any previous autologous transplant must have occurred \> 3 months ago * Left ventricular ejection fraction (LVEF) \>= 35%, or shortening fraction \> 25% * Bilirubin \<= 3.0 mg/dL (unless due to Gilbert's syndrome or hemolysis) * AST and ALT \<= 5 x institutional upper limit of normal * FEV1 and FVC \>= 40% of predicted; if unable to perform pulmonary function testing, oxygen saturation \> 92% on room air * ECOG performance status \<= 2, or Karnofsky/Lansky status \>= 60 Exclusion Criteria: * Pregnancy or active breastfeeding * Uncontrolled active infection * Previous allogeneic tra…