A Study of ANV419 Alone or in Combination With Approved Treatment in Patients With Cutaneous Melanoma (OMNIA-1).

Inclusion Criteria

• Must provide written informed consent for the study;
• Must be able to comply with the Protocol as judged by the Investigator;
• Are ≥18 years of age on day of signing informed consent;
• Have histologically confirmed Stage 3 (unresectable) or Stage 4 (metastatic) CM, as per the American Joint Committee on Cancer staging system, eighth edition;
• Have documented radiological progression on prior systemic therapy;
• Have previously received anti-PD-1/L1 as monotherapy or in combination. A maximum of 2 prior lines of systemic therapy is allowed for BRAF wild-type disease and a maximum of 3 prior lines of systemic therapy is allowed for BRAFV600 positive disease;
• Have measurable disease based on RECIST;
• Have a performance status of 0 or 1 on the ECOG Performance Status;
• Have adequate organ functions as defined per protocol;
• Female patients of childbearing potential must have a negative serum pregnancy test at the Screening Visit and a negative (urine or serum) pregnancy test within 72 hours prior to study Day 1. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required and must be negative for the patient to be eligible;
• Female patients who are not postmenopausal, and who have not undergone surgical sterilization, must agree to use highly effective methods of contraception during the treatment period and for 6 months after the last dose of study drug. They must also agree not to donate eggs (ova, oocytes) during the same timeframe; and
• Male patients with partners of childbearing potential must agree to use highly effective methods of contraception and barrier contraception (condom) during the treatment period and for 6 months after the last dose of study drug. They must also agree not to donate sperm during the same timeframe.

Exclusion Criteria

• Have received investigational agent (including investigational device) within 4 weeks or an interval of 5 half-lives of the respective investigational agent prior to study Day 1, whichever is longer, with the exclusion of an anti-PD-1/anti-PD-L1 antibody given as either a single agent or non-CTLA-4 antibody containing combination (eg, anti-lymphocyte-activation gene 3 antibody);
• Have a known hypersensitivity to ANV419 or to any of the excipients, such as sucrose, histidine or polysorbate 80. For combination arms only: Have hypersensitivity to pembrolizumab or ipilimumab or any of their excipients;
• For combination arms only: Have previously discontinued ipilimumab, pembrolizumab or any other PD-1/PD-L1 inhibitors due to unacceptable drug-related toxicity (defined as toxicities that required second line immunosuppression, ie, not controlled by steroids alone);
• Have an LDH level of ≥2 × upper limit of normal;
• Have not recovered (ie, ≤Grade 1 or at baseline with the exception of alopecia or fatigue [up to Grade 2 allowed]) from AEs resulting from prior immunotherapies. Patients who have autoimmune AEs controlled by replacement therapy (ie, hypothyroidism) due to previous treatment are eligible provided replacement therapy has been initiated and toxicity has returned to Grade 1;
• Have not recovered (ie, ≤Grade 1 or at baseline) from toxicities due to a previously administered prior chemotherapy, targeted small molecule therapy, or radiation therapy; Note: If the patient received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting study drug. Major surgery is defined as any surgery requiring entrance into a body cavity (eg, chest, abdomen, or brain), organ removal, normal anatomy alteration, or joint replacement. Minor surgery is defined as any surgery in which skin, mucosa, or connective tissue sections are altered (eg, biopsy, cataract, endoscopic procedures, etc).
• Have been diagnosed with uveal/ocular or mucosal melanoma;
• Have a known additional malignancy (including all in-situ carcinoma) that is progressing or req