Study of MAGE-A3 and NY-ESO-1 Immunotherapy in Combo With DTPACE Chemo and Auto Transplantation in Multiple Myeloma

This is an experimental treatment that will consist of receiving peptide vaccinations as a
shot just under the skin (subcutaneous). We have chosen to vaccinate with peptides derived
from cancer proteins found in myeloma and other cancers. The purpose is to generate
anti-myeloma T-cells which will kill myeloma cells and nothing else.

The peptides are fragments from two tumor proteins called MAGE-A3 and NY-ESO-1. In order to
be eligible for the study your myeloma cells must express either MAGE-A3 or NY-ESO-1, and
your myeloma must be severe enough to require chemotherapy and stem cell transplantation.
You must also have the appropriate HLA tissue type.

Patients who have MAGE-A3 positive myeloma and are HLA-A*0101 or -B*35 positive will receive
the MAGE-A3 peptide vaccine.

Patients who have NY-ESO-1 positive myeloma and are HLA-A*0201 will receive the NY-ESO-1
peptide vaccine.

Three injections with 300µg per injection (in 1.5mls) of peptide will be given
subcutaneously together with the adjuvant GM-CSF at 500µg (same site in 0.5 mls) at two-week
intervals.

Your myeloma cells, obtained from a routine bone marrow aspirate, will be tested in the
laboratory for the presence of MAGE-A3 and/or NY-ESO-1 proteins. HLA tissue type will be
determined by standard methods in our Clinical Laboratory. This allows allocation of the
correct vaccine to each individual patient.

Prior to starting a 6-day course of chemotherapy called DTPACE, white blood cells will be
collected by a procedure called leukapheresis (leukapheresis no.1). Your white blood cells
will be frozen for the duration of the chemotherapy in order to protect these white blood
cells from the harmful effects of chemotherapy. After the chemotherapy is given, stem cells
will be collected by leukapheresis (PBSC collection) and stored until the time of
transplantation. After a short period of rest, the white blood cells from leukapheresis
no.1 will be thawed and re-infused. This will ensure that you will have white blood cells
that are in the best possible condition to respond to the peptide vaccines. A set of three
vaccinations with the peptides at two-week intervals will follow. The hope is that the
vaccinations will have generated precious anti-myeloma white blood cells.

You will again undergo leukapheresis (leukapheresis no.2) to collect the anti-myeloma white
blood cells, which will be frozen in order to protect these precious cells from the
chemotherapy drugs that will be infused just before the single or double auto-transplant.

A single dose of Melphalan will precede each transplant. The stem cells that were collected
after DTPACE will be given for the transplants. For those receiving two transplants, a
regimen of thalidomide with dexamethasone will be given for approximately 10 weeks between
the two transplants. You will stop your thalidomide 28 days before the second transplant.

After completion of the transplants, the anti-myeloma white blood cells collected with
leukapheresis no. 2 will be thawed and re-infused. These anti-myeloma cells will be boosted
by three further peptide vaccinations at two-week intervals.

Finally, after you have completed these three vaccinations you will undergo another
leukapheresis (no. 3). The anti-myeloma white blood cells collected with leukapheresis no. 3
will be frozen and stored for possible future use.

Six final vaccines will be given at monthly intervals to further amplify the anti-myeloma
white blood cells.

Inclusion Criteria:

- MM patients who have active, symptomatic myeloma, and meet the criteria below thus
establishing the presence of high-risk myeloma

- MM Salmon-Durie Stage: IA&B (with abnormal cytogenetics*), IIA, IIB, IIIA, and IIIB,
and meet the criteria below thus establishing the presence of high-risk myeloma

- MM must meet one of the following criteria: a) Patients who have MAGE-A3 positive MM
and who have the tissue type HLA-A*0101, or -* B35, are allocated to receive the
MAGE-A3168-176 peptide vaccine. b) Patients who have NY-ESO-1 positive MM and who
have the tissue type HLA-A*0201 are allocated to the NY-ESO-1156-C165V peptide
vaccine. c) Patients who have NY-ESO-1 positive and MAGE-A3 negative or positive MM
and who have as tissue type HLA-A*0101, or -* B35 and HLA-A*0201, will receive
vaccination with the NY-ESO-1156-C165V peptide vaccine. d) Patients who have NY-ESO-1
negative and MAGE-A3 positive MM and who have as tissue type HLA-A*0101, or -* B35
and HLA-A*0201, will receive vaccination with the MAGE-A3 peptide vaccine.

- Karnofsky performance score ≥=70, unless bone pain caused by MM results in a
Karnofsky score of > or =50.

- Age 18-70 years old

- Hb > or =8.0gm/dl, ANC > or =1,000/microliters, platelet count > or =
100,000/microliters.

- Patients must have signed an IRB-approved consent form and been informed about the
investigational nature of the study

- Negative serology for HIV, Hepatitis C and negative for Hepatitis B surface antigen.

- CD4+ count >400/microliters

- Life expectancy > 6 months

- Negative pregnancy test and females agree to two forms of contraception or
abstinence.

- Provisional insurance approval for single or double auto-transplant(s)

Exclusion Criteria:

- MGUS, indolent and smoldering myeloma

- Chemotherapy or other immunosuppressive treatment e.g. gluco-corticosteroids,
cyclophosphamide, methotrexate within the 4 weeks prior to enrollment

- Patients who have malignancies other than carcinoma-in-situ of the cervix or
non-melanomatous skin cancer

- Fever or active infection

- Liver function: total bilirubin > 2.5xULN or AST/ALT >2.5xULN

- Renal function: patients on dialysis, or serum creatinine >2.0mg/dl

- Simultaneous treatment with a second investigational drug or biologic agent for MM

- Other intercurrent serious illness, e.g. cardiac, pulmonary, hepatic disease,
uncontrolled diabetes, etc

- Cardiac: Patients with recent (< or =6 months) myocardial infarction, unstable
angina, difficult to control congestive heart failure, uncontrolled hypertension, or
difficult to control cardiac arrythmias are ineligible. Ejection fraction by ECHO or
must be > or = 50% and must be performed within 60 days prior to registration, unless
the patient has received chemotherapy within that period of time (dexamethasone and
thalidomide excluded), in which case the LVEF must be repeated

- Pulmonary: Patients must not have a history of chronic obstructive or chronic
restrictive pulmonary disease resulting in unacceptable lung function: patients must
have adequate pulmonary function studies > or = 50% of predicted on mechanical
aspects (FEV1, FVC, etc) and diffusion capacity (DLCO) > or = 50% of predicted.
Patients unable to complete pulmonary function tests due to myeloma related pain or
fracture must have a high resolution CT scan of the chest and must also have
acceptable arterial blood gases defined as P02 greater than 70

- Patients must be able to receive full doses of DT PACE, in the opinion of the
treating investigator, with the exception of: A) Patients that have received prior
adriamycin > 450 mg/m2 and LVEF < 55%. Adriamycin will be omitted in these patients.
B) Patients with a creatinine clearance 30 - 50 ml/minute, who will receive 50% of
the cisplatin dose