Trial Information

Vorinostat (SAHA) Combined With High-Dose Gemcitabine, Busulfan, and Melphalan With Autologous Hematopoietic Cell Support for Patients With Relapsed or Refractory Lymphoid Malignancies

Study Groups:

If you are found to be eligible to take part in this study, you will be enrolled in a group
of at least 3 participants to begin receiving the study drugs.

The dose of the study drugs you receive will depend on when you enrolled in this study. If
no intolerable side effects occur in your group, researchers will continue to enroll
participants at the next dose level until either the vorinostat reaches the dose level
currently used alone without stem cell transplant, or the highest tolerable dose of this
drug is found. The dose that you receive will remain the same throughout this study.

Busulfan Test Dose:

You will receive a test dose of busulfan by vein over about 60 minutes. This low-level test
dose of busulfan is to check how the level of busulfan in your blood levels changes over
time. This information will be used to decide the next dose needed to reach the target blood
level that matches your body size. You will most likely receive this as an outpatient
during the week before you are admitted to the hospital. If it cannot be given as an
outpatient, you will be admitted to the hospital on Day -11 (11 days before your stem cells
are returned to your body) and the test dose will be given on Day -10.

About 11 samples of blood (about 1 teaspoon each time) will be drawn for pharmacokinetic
(PK) testing of busulfan. PK testing measures the amount of study drug in the body at
different time points and will help the study doctor determine what your dose of busulfan
should be on study. These blood samples will be drawn at various timepoints before you
receive busulfan and over about the next 11 hours. The blood samples will be repeated again
on the first day of high-dose busulfan treatment (Day -8). A temporary heparin lock line
will be placed in your vein to lower the number of needle sticks needed for these draws. If
it is not possible for the PK tests to be performed for technical or scheduling reasons, you
will receive the standard fixed dose of busulfan.

If you receive the busulfan test dose as an outpatient:

On Days -12, -11, and -10, you will receive palifermin by vein over about 30 seconds each
day to help decrease the risk of side effects in the mouth and throat.

You will be admitted to the hospital on Day -9.

If you receive the busulfan test dose as an inpatient:

On Days -13, -12, and -11, you will receive palifermin by vein over about 30 seconds each
day to help decrease the risk of side effects in the mouth and throat.

You will be admitted to the hospital on Day -11.

Study Drug Administration (for all patients):

In stem cell transplant, the days before you receive your stem cells are called minus days.
The day you receive the stem cells is called Day 0. The days after you receive your stem
cells are called plus days.

Beginning on Day -9, you will swish the liquids caphosol and glutamine in your mouth 4 times
a day, for about 2 minutes each time. You will swish these liquids every day until you
leave the hospital. These drugs are used to help decrease the risk of side effects in the
mouth and throat.

On Day -8 through Day -2, you will take vorinostat by mouth, with food.

On Day -8, you will receive gemcitabine by vein over 3 1/2 - 4 1/2 hours and busulfan by
vein over 3 hours.

On Days -8, -7, -6, and -5, you will receive busulfan by vein over 3 hours.

On Day -3, you will receive gemcitabine by vein over 3 1/2 - 4 1/2 hours and melphalan by
vein over 30 minutes.

On Day -2, you will receive melphalan by vein over 30 minutes.

On Day -1, you will rest.

On Day 0, you will receive your stem cells by vein over about 30-60 minutes.

You will receive 3 more doses of palifermin by vein over 15-30 seconds on Days 0, +1 and +2.

If you have a B-cell cancer, you will receive rituximab (a treatment used for certain
lymphomas or chronic lymphocytic leukemia) by vein over 3-6 hours as part of standard of
care, on Days +1 and +8.

As part of standard care, you will receive G-CSF (filgrastim) as an injection just under
your skin 1 time a day starting on Day +5 until your blood cell levels return to normal.

Study Tests:

On Day -1, you will have an electrocardiogram (ECG) to check your heart function.

About 30-100 days after the transplant, you will have lung function tests.

About 100 days after the transplant:

- Blood (about 4 teaspoons) will be drawn for routine tests.

- If the doctor thinks it is needed, you may have a bone marrow aspiration and biopsy to
check the status of the disease.

- You will have a CT scan of the neck, chest, abdomen, and pelvis to check the status of
the disease.

- If the doctor thinks it is needed, you will have a PET scan to check the status of the
disease.

Length of Study:

As part of standard care, you will remain in the hospital for about 3-4 weeks after the
transplant. After you are released from the hospital, you will continue as an outpatient in
the Houston area to be monitored for infections and transplant-related complications.

You will be taken off study about 100 days after the transplant. You may be taken off study
early if the disease gets worse, if intolerable side effects occur, or if you are unable to
follow study directions.

This is an investigational study. Vorinostat, gemcitabine, busulfan, melphalan, and
rituximab are all FDA approved and commercially available. The use of these study drugs in
combination is investigational.

Up to 80 patients will take part in this study. All will be enrolled at MD Anderson.