CD34+ Selected Stem Cell for Poor Graft Function or Graft Failure

Inclusion Criteria:

* Recipient of allogeneic transplantation, adult ≥18 years, from any type of donor including matched related, matched unrelated, mismatched related or mismatched unrelated or haploidentical donor transplant.
* Documented evidence of graft dysfunction or failure (a-c):

  1. Primary graft Failure: Graft failure is defined as failure to achieve neutrophil engraftment by day +28 or lack of donor chimerism \> 50% by day 45 not due to the underlying malignancy;
  2. Poor graft function is defined by at least 2 of the following 3 criteria: Hemoglobin \< 8 g/dL, ANC \< 0.5x109/L, and platelets \< 20x109/L. The cytopenia must be unexplained (such as by disease relapse) and unresponsive to hematopoietic growth factors and must last at least 4 weeks;
  3. Secondary graft failure is defined as poor graft function associated with donor chimerism \< 5% after initial engraftment
* Transplanted donor availability
* Negative pregnancy test within seven (7) days of product infusion for women of childbearing potential.

Exclusion Criteria:

* Graft failure due to disease relapse or evidence of disease relapse or progression
* Donor unavailable or unable to collect peripheral HPC by apheresis
* Responsive to conventional measures (such as, hematopoietic growth factor)
* Allergic reaction to murine proteins or iron dextran
* Women of childbearing potential with positive serum HCG