Inclusion Criteria:  Histologically or cytologically documented locally advanced or metastatic solid tumor malignancy. Progressed or was intolerant to all available therapies known to confer clinical benefit appropriate for their tumor type, and for which the patient was eligible and willing to receive, or refused SOC treatments that are perceived to have marginal clinical benefit. Adequate bone marrow, kidney and liver function. Performance status of 0 or 1. Resolved acute effects of any prior therapy to baseline severity or CTCAE Grade 1 except for AEs not constituting a safety risk by Investigator judgement.  Exclusion Criteria:  Prior treatment targeting ILT2 and/or ILT4 or targeting HLA-G.