Inclusion Criteria:

          1. Diagnosis of advanced and/or metastatic solid tumors who have progressed on all
             standard therapies, are intolerant to Standard-Of-Care (SOC), and/or are non-amenable
             to SOC. Participants whose tumors have known sensitizing mutation must have
             experienced disease progression (during or after treatment) or intolerance to
             treatment with a respective targeted therapy.

          2. Measurable disease according to RECIST v1.1.

          3. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1.

          4. Able to provide the most recent archival tumor tissue samples.

          5. Adequate cardiovascular, haematological, liver and renal function.

          6. Participants on therapeutic anticoagulation must be on a stable anticoagulant regimen.

          7. Women of Childbearing Potential: Agreement to remain abstinent (refrain from
             heterosexual intercourse) or use highly effective contraceptive methods.

          8. Men: Agreement to remain abstinent (refrain from heterosexual intercourse) or use
             highly effective contraceptive methods and refrain from donating sperm.

        Exclusion Criteria:

          1. Pregnancy, lactation, or breastfeeding.

          2. Known hypersensitivity to any of the components of RO7296682, including but not
             limited to hypersensitivity to Chinese hamster ovary cell products or other
             recombinant human or humanized antibodies.

          3. History or clinical evidence of central nervous system (CNS) primary tumors or
             metastases.

          4. Participants with another invasive malignancy in the last two years.

          5. Evidence of significant, uncontrolled concomitant diseases that could affect
             compliance with the protocol or interpretation of results.

          6. Participants with known active or uncontrolled infection.

          7. Positive HIV test at screening.

          8. Positive for Hepatitis B and C.

          9. Vaccination with live vaccines within 28 days prior to C1D1.

         10. Major surgical procedure or significant traumatic injury within 28 days prior to first
             RO7296682 infusion.

         11. Participants with wound healing complications.

         12. Dementia or altered mental status that would prohibit informed consent.

         13. History of Stevens-Johnson syndrome, toxic epidermal necrolysis, or DRESS (drug rash
             with eosinophilia and systemic symptoms).

         14. Active or history of autoimmune disease or immune deficiency.

         15. Prior treatment with CPIs (e.g. anti-CTLA4, anti-PD1, anti-PDL1), immunomodulatory
             monoclonal antibodies (mAbs) and/or mAb-derived therapies (approved or
             investigational) is approved.

         16. Prior treatment with a CC chemokine receptor 4 (CCR4)-targeting (e.g. mogamulizumab)
             or a CD25-targeting agent (e.g. basiliximab) is prohibited.

         17. Treatment with standard radiotherapy, any chemotherapeutic agent, targeted therapy or
             treatment with any other investigational drug (defined as treatment for which there is
             currently no regulatory authority-approved indication) within 28 days or 5 half-lives
             of the drug (whichever is shorter), prior to the first RO7296882 administration on
             C1D1.

         18. Radiotherapy within the last 4 weeks before start of study drug treatment, with the
             exception of limited palliative radiotherapy (for which no wash out period is
             required).