KEYNOTE-D36: This study is evaluating a cancer vaccine called EVX-01 when given in combination with pembrolizumab immunotherapy in patients with inoperable or metastatic melanoma who have not had prior treatment with a Checkpoint InhibitorAn Open Label, Single Arm Trial Evaluating the Efficacy and Safety of EVX-01 in Combination With Pembrolizumab in Checkpoint Inhibitor Treatment naïve Adults With Unresectable or Metastatic Melanoma

Inclusion

• Be at least 18 years of age on day of signing informed consent.

• Histologically confirmed, and not amenable to local therapy, metastatic or unresectable melanoma Stage III or Stage IV, as per AJCC 8th ed. staging system.

  1. Patient may not have a diagnosis of uveal or ocular melanoma.
  2. Patients must be treatment naïve to checkpoint inhibitor (CPI) therapy
  3. Patients must have testing for a BRAF mutation prior to study entry.

Note: Patients with BRAF V600E mutant melanoma may have received prior BRAF inhibitor therapy as first-line systemic therapy and be eligible for this study as second line treatment. At the discretion of the investigator, patients with BRAF V600E mutant melanoma who have NOT received a BRAF inhibitor are also eligible for this study as first line treatment if they meet the following additional criteria:

i. LDH < local ULN, ii. No clinically significant tumor related symptoms in the judgment of the investigator, and iii. Absence of rapidly progressing metastatic melanoma in the judgment of the investigator

• Have measurable disease per RECIST 1.1 as assessed by the local site investigator within 4 weeks prior to the first visit. Lesions situated in a previously irradiated area are considered measurable if progression has been demonstrated in such lesions.
• Patients must be willing and able to provide fresh or frozen tumor tissue from an unresectable or metastatic site of disease for neoepitope and biomarker analyses. If a sufficient amount of tumor tissue from an unresectable or metastatic site is not available prior to the start of the screening phase, subjects must consent to allow the acquisition of additional tumor tissue. In addition, participants may provide additional biopsy at the time of discontinuation due to progression.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.