The purpose of the study is to investigate the safety, tolerability, and preliminary anti-neoplastic activity of S095029 alone and in combination with Sym021 in patients with advanced solid tumor malignancies followed by an expansion phase of triple combinations.

*The study sponsor has made the decision not to move forward to the expansion part of the study due to strategic considerations, unrelated to any safety issues or concerns. The study will be stopped after completion of dose escalation parts 1a and 1b of the study.

Dose escalation part:

Inclusion Criteria:

• Histologically or cytologically confirmed unresectable, locally advanced or metastatic solid tumor malignancies
• Patients with a malignancy not amenable to surgical intervention
• Patients with measurable disease and progression radiologically assessed
• Patients with disease progression after treatment with available standard of care therapies that are known to confer clinical benefit or who are intolerant to treatment.
• Patients with available archived tumor biopsy specimens or agree to mandatory biopsy
• Estimated life expectancy ≥ 12 weeks
• Adequate haematological function
• Adequate renal function
• Adequate hepatic function

Exclusion Criteria:

• Pregnant and lactating women
• Major surgery within 4 weeks prior to the first IMP administration or not recovered from the surgery
• Patients with serious/active/uncontrolled infection or infection requiring parenteral antibiotics, within 2 weeks prior to first IMP administration
• Active Hepatitis B Virus infection
• Carriers of HIV antibodies
• Patients with active thrombosis, or a history of deep vein thrombosis or pulmonary embolism, within 4 weeks prior to first IMP administration
• History of organ transplantation
• History of gastrointestinal perforation, or intra-abdominal abscess within 28 days of inclusion
• History of cirrhosis
• History of pulmonary fibrosis or relevant uncontrolled chronic pulmonary condition
• Treatment with systemic immunosuppressive therapy
• Active autoimmune disease
• Administration of a live vaccine within 28 days prior to inclusion

Qualified scientific and medical researchers can request access to anonymized patient-level and study-level clinical trial data.

Access can be requested for all interventional clinical studies:

• used for Marketing Authorization (MA) of medicines and new indications approved after 1 January 2014 in the European Economic Area (EEA) or the United States (US).
• where Servier is the Marketing Authorization Holder (MAH). The date of the first MA of the new medicine (or the new indication) in one of the EEA Member States will be considered for this scope.

In addition, access can be requested for all interventional clinical studies in patients:

• sponsored by Servier
• with a first patient enrolled as of 1 January 2004 onwards
• for New Chemical Entity or New Biological Entity (new pharmaceutical form excluded) for which development has been terminated before any Marketing authorization (MA) approval.

After Marketing Authorisation in EEA or US if the study is used for the approval.

Researchers should register on Servier Data Portal and fill in the research proposal form. This form in four parts should be fully documented. The Research Proposal Form will not be reviewed until all mandatory fields are completed.