DBC-664 in Adult Patients With Solid Tumors

Inclusion Criteria: * Must be ≥18 years of age at the time consent is signed. * Has a histologically or cytologically confirmed unresectable recurrent locally advanced or metastatic solid tumor * Has measurable disease per RECIST v1.1 (or mRECIST 1.1 for patients with pleural mesothelioma), as assessed by the local site Investigator/radiology. Exclusion Criteria: * Has a diagnosis of immunodeficiency. * Has had a prior stem cell, bone marrow, or organ transplant. * Has a known history of human immunodeficiency virus (HIV) infection. * Has active or chronic hepatitis B virus (HBV), or hepatitis C virus (HCV) infection. * Has an active autoimmune disease (non-immunotherapy induced conditions) that has required systemic treatment in the past 2 years (ie, with use of disease modifying agents, corticosteroids, or immunosuppressive drugs). * Has a history of (noninfectious) pneumonitis that required steroids or current active pneumonitis/interstitial lung disease. * Has symptomatic visceral spread of disease that poses a risk of life-threatening complications in the short term, per Investigator's opinion (including massive uncontrolled effusions \[pleural, pericardial, peritoneal\], pulmonary lymphangitis, and over 50% liver involvement). * Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Individuals with previously treated CNS metastases may participate provided they are radiologically stable (ie, without evidence of progression for at l…