A Study of Avelumab, Binimetinib and Talazoparib in Patients With Locally Advanced or Metastatic RAS-mutant Solid Tumors

Inclusion Criteria

• Histological diagnosis of locally advanced (primary or recurrent) or metastatic solid tumors that are not amenable for treatment with curative intent as follows:
• Metastatic pancreatic ductal adenocarcinoma; or
• Phase 2 only: Stage IIIb/IV NSCLC or other advanced solid tumors with documented positive KRAS or NRAS mutation as determined using a validated test performed in a CAP/CLIA-certified laboratory (or other comparable local or regional certification).
• Have had disease progression during or following at least 1 and not more than 2 prior lines of treatment for advanced or metastatic disease.
• Patients with NSCLC must have previously received treatment with an anti-PD-1 or anti-PD-L1 agent for advanced disease.
• Measurable disease as per RECIST v1.1 criteria.
• Provision of a baseline tumor sample.
• Age ≥18 years (Japanese patients must be ≥20 years old)
• Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) 0 or 1.
• Adequate bone marrow, renal and liver functions.
• Adequate cardiac function.
• Informed consent provided.

Exclusion Criteria

• Prior treatment with avelumab, a PARP inhibitor or MEK inhibitor.
• Prior systemic anti-cancer therapy within 2 weeks prior to study enrollment.
• Persisting toxicity related to prior therapy.
• Current use of immunosuppressive medication.
• Known history of immune-mediated colitis, inflammatory bowel disease, pneumonitis, pulmonary fibrosis, uveitis or iritis.
• Active or prior autoimmune disease that might deteriorate when receiving an immunostimulatory agent.
• Diagnosis of myelodysplastic syndrome (MDS).
• Known symptomatic brain metastases requiring steroids.
• Known history of testing positive for HIV or hepatitis.
• Clinically significant (ie, active) cardiovascular disease.
• History of thromboembolic or cerebrovascular events.
• Current or anticipated use of a P-gp inhibitor, inducer, or inhibitor of breast cancer resistance protein (BCRP)
• Uncontrolled hypertension.
• Concurrent neuromuscular disorder that is associated with the potential of elevated creatinine kinase.
• Known history of Gilbert's syndrome.
• History or current evidence of retinal degenerative disease, retinal vein occlusion (RVO) or current risk factors for RVO.
• Other acute or chronic medical or psychiatric condition.