A Phase 1a Open-Label, Dose-Escalation, and a Phase 2 Study to Investigate the Safety, PK, PD, and Clinical Activity of ST-067 Administered Subcutaneously as Monotherapy in Patients With Relapsed or Refractory Solid Tumors

This is a multicenter Phase 1a open-label, dose escalation study, and a Phase 2 study of ST-067. Phase 1a is a first-in-human (FIH) dose escalation study in patients aged 18 years or older diagnosed with solid tumors who have exhausted available standard. Phase 2 will enroll patients aged 18 years or older diagnosed with the following solid tumors: melanoma, renal cell carcinoma, triple negative breast cancer, non-small cell lung cancer, squamous cell carcinoma of the head and neck, and microsatellite instability-high tumors.