Atebimetinib + GnP as a First Line Treatment in Patients With Metastatic Pancreatic Adenocarcinoma

Inclusion Criteria: * Must be ≥18 years of age * Must have confirmed diagnosis according to AJCC staging as follows: * Metastatic pancreatic adenocarcinoma within 12 weeks prior to screening * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Participants must be treatment naive as follows: * First-line PDAC participants will have received no previous systemic anti-cancer therapy * Must have evidence of measurable disease (at least one target lesion) per RECIST v1.1 criteria * Adequate organ function, hepatic function, coagulation studies and protocol determined clinical laboratory values Exclusion Criteria: * Inability to swallow oral medications * Participant has squamous, adenosquamous, neuroendocrine (carcinoid, islet cell) or acinar pancreatic carcinoma * Participants with only locally advanced disease * Symptomatic, untreated, or actively progressing known central nervous system (CNS) metastases