Once Daily Targeted Intravenous (IV) Busulfex as Part of Reduced-toxicity Conditioning for Patients With Refractory Lymphomas Undergoing Allogeneic Transplantation

This study hopes to learn if giving intravenous (IV) busulfan with fludarabine before (as a
conditioning regimen) allogeneic hematopoietic progenitor cell transplantation (HPC) is safe
and helps patients with Non—Hodgkin´s Lymphoma (NHL) and Hodgkin´s Lymphoma (HL). An HPC
transplant takes cells from a donor´s bone marrow and, after chemotherapy treatment with a
conditioning regimen, infuses the donor´s cells into the patient´s body. Busulfan is a strong
drug that suppresses the immune system and fludarabine is a chemotherapy (cancer fighting)
drug. These drugs can stop the growth of cancer cells by breaking the Deoxyribonucleic acid
(DNA) or genetic material which is necessary for the growth of both healthy and cancer cells.
The use of IV busulfan with fludarabine as a conditioning regimen prior to HPC transplant is
investigational (not approved by the Food and Drug Administration [FDA]).

Busulfan is only given once daily by IV in this study, which is also not approved by the FDA.
Patients in this study will go through standard procedures for their disease like medical
history, physical exam, blood tests, Multi Gated Acquisition Scan (MUGA) scan or
echocardiogram, bone marrow aspirate or biopsy, and lung functions test. Patients will be
asked to donate additional blood and bone marrow for this study and for potential future
research on their blood related to this study. Because of the normal procedures for HPC
transplants patients in this study will be hospitalized for 4 to 6 weeks or longer and will
make frequent trips to the clinic to visit the study doctor for supervision for at least one
year. Each patient will also have to have a central venous catheter inserted into a large
vein above the heart. This is used to give the drugs and to take blood samples.

Participation in this study will last about two years. The study expects to enroll 32
patients and will open to at least two collaborating institutions in the future. Upon initial
Institutional Review Board (IRB) approval enrollment will only occur at West Virginia
University (WVU). The IRB will be notified before enrollment occurs at other institutions.

Inclusion Criteria:

1. Patients aged 18-70 years of age are eligible.

2. Eligible histologies include:

- B-cell, T-cell or NK-cell NHL refractory to frontline or salvage therapy defined
as failure to achieve complete or partial remission according to standard
criteria.

- Diffuse large B-cell lymphoma relapsing within 12 months of finishing a rituximab
containing first line chemotherapy regimen (regardless of response to salvage
chemotherapy)or with evidence of c-myc. Primary refractory NHL (regardless of
response to salvage chemotherapy).

- Hodgkin lymphoma which is chemorefractory after at least two prior therapies.

- Hodgkin and NHL in an untreated relapse.

- Transformed NHL or chronic lymphocytic leukemia undergoing Richter's
transformation (regardless of response to last chemotherapy). Patients with
chemosensitive relapsed NHLs or Hodgkin lymphoma, but considered ineligible for
curative therapy with autologous transplantation, because of (a) inability to
collect stem cells, (b) prior autografting, (c) presence of myelodysplasia or (d)
histology not considered curable with autografting in opinion of treating
physician will be eligible.

3. All patients must have at least one suitable HLA-matched sibling or volunteer
unrelated donor available (according to institutional guidelines). HLA typing should
be performed at least at serological level for HLA-A, -B, and -C and at allele level
for HLA-DRB1. One antigen or allele level mismatch will be permitted between the donor
and the recipient; however each donor/recipient pair must match at HLA-DRB1 at allele
level.

4. Patient must be able to provide informed consent.

5. Left ventricular ejection fraction ≥ 40%. No uncontrolled arrhythmias or uncontrolled
New York Heart Association class III-IV heart failure.

6. Bilirubin, aspartate aminotransferase (AST), and Alanine transaminase (ALT) ≤ 3 x
normal; and absence of hepatic cirrhosis.

7. Adequate renal function as defined by a serum creatinine clearance of ≥ 40% of normal
calculated by Cockcroft-Gault equation.

8. DLCO (diffusion capacity; corrected for hemoglobin) or forced expiratory volume (FEV1)
≥ 50% of predicted.

9. Karnofsky performance status ≥ 70.

10. A negative pregnancy test will be required for all women of child bearing potential.
Breast feeding is not permitted.

Exclusion Criteria:

1. Patients eligible for potentially curative therapy with autologous transplantation.

2. Patients with lymphoblastic lymphoma.

3. Patients with positive human immunodeficiency virus (HIV) serology.

4. Clinical evidence of uncontrolled bacterial, viral or fungal infection at the time of
transplant conditioning.

5. Prior allogeneic transplantation.