Multiple Antigen-Engineered DC Vaccine for Melanoma

This is a Phase I, single site study to evaluate the immunological effects of autologous DC
transduced with the MART-1, tyrosinase and MAGE-A6 (melanoma associated antigens, MAA) genes
in 30 subjects with recurrent, unresectable stage III, IV metastatic melanoma (M1a, M1b,
M1c). AdVTMM2-transduced DC, 10e7, will be given intradermally (i.d.) every two weeks for a
total of 3 vaccines.

After the DC vaccines, subjects will be randomized to either receive a boost of high dose
IFNa2b or no boost.

Subjects randomized to receive the IFNa2b boost will receive Interferon-a2b, 20 MU/m2/d
(rounded to the nearest 1 million units) administered intravenously for 5 consecutive days
(Monday through Friday) every week for 4 weeks (induction). Administration will begin
approximately 30 days (± 7 days) after the 3rd vaccine. The first dose of IFNα2b may begin
within 10 business days of randomization. All subsequent procedure dates for Group A will be
based on the date of the first dose of IFNα2b..

The end-points of this study are local and systemic toxicity, immunological response,
generation of determinant spreading and anti-tumor immunity, and clinical response.

Inclusion Criteria:

- Ability and willing to give consent

- Patients age 18 and older with recurrent, inoperable stage III, IV, M1a, b or c
melanoma (any tumor thickness and any number of lymph node involvement, and in-transit
metastases, or distant metastases) (AJCC).

Previously treated with any form of therapy (including chemotherapy, radiation therapy,
immunotherapy or surgery) for either metastatic, relapsed, or primary melanoma are eligible
for this trial, provided the previous treatment was completed > 30 days prior to
enrollment.

- Patients should have at least 2 subcutaneous, intracutaneous, and accessible tumor
deposits, lymph node or other site available for biopsy purposes.

- Both men and women may be enrolled. Premenopausal females must have a negative
pregnancy test prior to treatment and lactating females will have to discontinue
breast feeding to be eligible.

- ECOG Performance Status of 0 or 1.

- No previous evidence of class 3 or greater New York Heart Association cardiac
insufficiency or coronary artery disease.

- No previous evidence of opportunistic infection.

- Adequate baseline hematological and organ function as assessed by the following
laboratory values within 28 days prior to study entry:

Hemoglobin >/=9 g/dL Granulocytes >/=2,000/mm3 Lymphocytes >/=1000/mm3 Platelets
>100,000/mm3 Serum Creatinine the ULN Serum Bilirubin and organ function lab values along with the ECOG PS must be met prior to starting IFNα
treatment.

- Subjects must have normal coagulation parameters as measured by PT/PTT,unless the
subject is on an anticoagulation therapy.

Exclusion Criteria:

- Females of child-bearing potential (pre-menopausal) must have a negative serum
beta-HCG pregnancy test at screening.

- Subjects with acute infection: any acute viral, bacterial, or fungal infection which
requires specific therapy. Acute therapy must have been completed more than 14 days
prior to study treatment.

- Hep B & C and HIV-infected patients, due to concerns in the ability to stimulate an
effective immune response (determined by historical medical data).

- Subjects with acute medical problems such as ischemic heart or lung disease that may
be considered an unacceptable anesthetic or operative risk.

- Subjects with any underlying conditions which would contraindicate therapy with study
treatment (or allergies to reagents).

- Subjects with organ allografts.

- Subjects must be free of known brain metastases by contrast-enhanced CT/MRI scans or
have successfully-treated brain metastases and be asymptomatic for more than 1 month.

- Patients requiring immunosuppressive therapy for comorbid conditions.

- Concomitant Medication and Treatment: All allowed medications or treatments should be
kept to a minimum and recorded. All questions regarding concomitant medications should
be referred to the Investigator.

- Long term concurrent medications and/or treatments Not Allowed: Corticosteroids,
chemotherapy, cyclosporin A. Short term (approximately 1 week) use of topical,
low-dose or inhaled steroids may be allowed at the discretion of the investigator.
Injectables not allowed.