Inclusion Criteria

Inclusion criteria

1. Subjects must have recurrent stage III (i.e., recurrent regional metastasis), or
stage IV (i.e., any distant metastasis) melanoma for which surgical resection would
be clinically recommended, with biopsy proven (current or previous) Stage III or
Stage IV disease. Any biopsies obtained to demonstrate recurrent regional metastasis
or distant metastasis must be considered clinically appropriate for clinical
management and must not be performed solely for meeting eligibility criteria. In
addition, subjects must have disease that has not yet been completely excised.

2. Patients must have disease which involves 3 or fewer sites. A nodal basin recurrence
will be scored as one site, even if multiple nodes are positive. "Clustered"
subcutaneous and/or cutaneous lesions that can be removed in a single surgical
excision will be scored as one site, even if multiple subcutaneous and/or cutaneous
lesions are present.

3. The subjects' disease is determined to be completely resectable with uninvolved
margins using standard surgical guidelines based on physical exam and radiographic
imaging (MRI or CT of the head, and CT or MRI of the chest, abdomen and pelvis).

4. Subjects must have one of the following: a) Stage III melanoma with recurrence after
prior surgery, with or without subsequent adjuvant systemic (standard or
experimental) and/or radiotherapy management Or b) Stage IV melanoma (cutaneous,
ocular, mucosal, or unknown primary)

5. Subjects must be 18 years old or older OR if they are 15 years old or greater,
considered to be mature minors, able to give adult informed consent (with parental
co-signature), meet all other eligibility criteria, and also weigh at least 45 kg..
Subjects must weigh at least 45 kg in order to safely provide sufficient blood for
monitoring studies (see section 7.7 for details).

6. Subjects must have an ECOG performance status of 0 or 1.

7. Subjects must have adequate bone marrow, liver, and renal function.

8. Subjects with one or more of the following cardiac risk factors must complete a
stress radionuclide scan with no evidence of myocardial ischemia or heart failure:
(a) a history of cardiac disease, (b) age greater than 65 years old, (c) any
clinically significant abnormality found on ECG (required at baseline), or (d)
significant risk factors for coronary artery disease (history of significant
dyslipidemia; any treatment for dyslipidemia; or two first degree relatives with a
documented myocardial infarction prior to age 55).

9. Subjects with significant history of pulmonary disease, shortness of breath at rest,
or known COPD must have pulmonary function tests within 35% of normal age-predicted
values.

10. Subjects must be willing and able to provide informed written consent prior to any
study-related procedures.

11. Subjects must have no immediate requirements for palliative chemotherapy, palliative
radiotherapy, or palliative hormonal therapy.

12. Subjects must be willing and able to discontinue antihypertensive medications if
advised to do so for days of hu14.18-IL2 infusion.

13. Subjects must have slides available from stage III or stage IV melanoma. Paraffin
blocks are preferable, but at a minimum, slides documenting melanoma by biopsy
(including fine needle cytology) must be available for pathology review, and
potential restaining/staining (see Section 7.4, Surgical Pathology Guidelines).
Prior histologic demonstration of metastatic melanoma (either stage III or Stage IV)
may be utilized if a repeat biopsy is not clinically needed to to establish
eligibility.

Exclusion criteria

1. Subjects are ineligible if they have received mAbs during biologic therapy, tumor
imaging, purging of autologous marrow/stem cells for re-infusion or for any other
reason unless serological testing is performed. If the absence of detectable
antibody (over background) to hu14.18 is documented, the subject is eligible for the
study.

2. Subjects treated with IL2 in the past that developed intolerable (Grade 4)
IL2-related side effects are not eligible.

3. Subjects who have received any (standard or experimental) systemic therapy for stage
IV disease are not eligible.

4. Women of childbearing potential will be excluded if they are pregnant, nursing, or
not using effective contraception during the treatment period.

5. Subjects with symptoms of ischemic cardiac disease, congestive heart failure,
myocardial infarct within the immediate preceding 6 months and/or uncontrolled
cardiac rhythm disturbance are ineligible.

6. Subjects with significant psychiatric disabilities or seizure disorders are
ineligible.

7. Subjects who have had major surgery within the past 3 weeks are ineligible.

8. Subjects with clinically detectable pleural effusions or ascites are ineligible.

9. Subjects with organ allografts are ineligible.

10. Subjects who require or are likely to require corticosteroid or other
immunosuppressive drugs or have used them within 2 weeks of registration are
ineligible.

11. Subjects with significant intercurrent illnesses are ineligible.

12. Subjects with active infections or active peptic ulcer unless these conditions are
corrected or controlled are ineligible.

13. Subjects with brain metastases, whether active or inactive, are ineligible. A head
MRI or head CT scan will be required at baseline to rule out silent metastases.

14. Subjects with active second malignancy other than non-melanoma skin cancer are
ineligible. Patients will be considered eligible if they have been continuously
disease free for > 5 years prior to the time of enrollment.

15. Subjects who are infected with human immunodeficiency virus (HIV), hepatitis B
surface antigen (HBs Ag) carrier state or with clinical evidence of hepatitis are
ineligible. Treatment may be initiated before laboratory confirmation of HIV and HBs
Ag negativity, but will be stopped if results are positive.

16. Subjects with a clinically significant neurologic deficit or objective peripheral
neuropathy (Grade > 2) are ineligible.

17. Subjects with a known hypersensitivity to the study drug, Tween-80® or to human
immunoglobulin are ineligible.

18. Patients with a known history of diabetes mellitus that has required systemic therapy
within the past 3 months (either oral hypoglycemic agents or insulin) will be
excluded, as treatment with hu14.18-IL2 may alter blood glucose levels.

19. Subjects with a legal incapacity or limited legal capacity are ineligible.

20. Subjects with bone metastases are ineligible.