Inclusion Criteria:

- Written informed consent signed.

- Male or female patient with histologically proven stage IIIB or IIIC cutaneous
melanoma presenting with macroscopic lymph node involvement suitable for surgery.

- The patient must have been surgically rendered free of disease before the
randomization.

- Patient is ≥ 18 years old at the time of signing the informed consent form.

- The patient's lymph node tumor shows expression of the MAGE-A3 gene.

- The patient has fully recovered from surgery.

- ECOG performance status of 0 or 1 at the time of randomization.

- The patient must have adequate organ functions as assessed by standard laboratory
criteria.

- If the patient is female, she must be of non-childbearing potential, or practice
adequate contraception.

- In the opinion of the investigator, the patient can and will comply with all the
requirements of the protocol.

Exclusion Criteria:

- The patient suffers from a mucosal or ocular melanoma.

- The patient has or has had any history of in-transit metastases

- The patient has been treated or is scheduled to be treated with an adjuvant
anticancer therapy after the surgery that qualifies the patient for inclusion in the
present trial.

- The patient requires concomitant chronic treatment with systemic corticosteroids or
any other immunosuppressive agents.

- Use of any investigational or non-registered product (drug or vaccine) other than the
study treatment.

- The patient has a history of autoimmune disease.

- The patient has a family history of congenital or hereditary immunodeficiency.

- The patient is known to be positive for Human Immunodeficiency Virus (HIV) or has
another confirmed or suspected immunosuppressive or immunodeficient condition.

- History of allergic disease or reactions likely to be exacerbated by any component of
the treatments.

- The patient has psychiatric or addictive disorders that may compromise his/her
ability to give informed consent or to comply with the trial procedures.

- The patient has concurrent severe medical problems, unrelated to the malignancy, that
would significantly limit full compliance with the study or expose the patient to
unacceptable risk.

- The patient has previous or concomitant malignancies at other sites, except
effectively treated non-melanoma skin cancers or carcinoma in situ of the cervix or
effectively treated malignancy that has been in remission for over 5 years and is
highly likely to have been cured.

- The patient has an uncontrolled bleeding disorder.

- For female patients: the patient is pregnant or lactating.