Study of the Efficacy of Intratumoral L19IL2 or L19TNF or L19IL2/L19TNF, in Combination with Pembrolizumab, in Unresectable Melanoma Patients

Arm 1: The amount of L19IL2 that is intratumorally administered into injectable cutaneous, subcutaneous, and nodal tumors once weekly for up to 4 weeks is dependent on the size of the tumor. The maximum dose to be administered in a single treatment visit is 13 MioIU/1 mL of L19IL2.

Arm 2: The amount of L19TNF that is intratumorally administered into injectable cutaneous, subcutaneous, and nodal tumors once weekly for up to 4 weeks is dependent on the size of the tumor. The maximum dose to be administered in a single treatment visit is 400 μg/1 mL of L19TNF.

Arm 3: The amount of L19IL2/L19TNF that is intratumorally administered into injectable cutaneous, subcutaneous, and nodal tumors once weekly for up to 4 weeks is dependent on the size of the tumor. The maximum dose to be administered in a single treatment visit is 13MioIU L19IL2 + 400 μg L19TNF in a combined total volume of approximate 2 mL. In case that study drug-related, grade ≥ γ AEs are recorded after the first L19IL2/L19TNF dose administration, the L19TNF dose is reduced to 200 μg for the following administrations.

KEYTRUDA® will be administered by i.v. infusion as a dose of 200 mg on the first day of intralesional treatment with ICKs and will continue every 3 weeks for approximately 2 years, 35 cycles, 2 year cap or until disease progression or unacceptable toxicity, whichever comes first. ICKs intralesional treatment will be administered 30-60 minutes post administration of KEYTRUDA®.