A Study to Investigate the Safety and Efficacy of KQB365 as Monotherapy and in Combination in Participants With Advanced Solid Malignancies

The goal of this clinical trial is to learn if KQB365 works to treat advanced solid tumor cancer in adults. It will also learn about the safety of KQB365. The main questions it aims to answer are: - What is the safe dose of KQB365 by itself, in combination with cetuximab, or in combination with KQB198? - Does KQB365 alone, in combination with cetuximab, or in combination with KQB198 decrease the size of the tumor? - What happens to KQB365 in the body? Participants will: - Receive KQB365 infusion weekly alone, in combination with cetuximab, or in combination with oral KQB198. - Visit the clinic about 9 times in the first 6 weeks, and then once every week after that.

Study sponsor and potential other locations can be found on ClinicalTrials.gov for NCT06720987.

Trial PhasePhase I

Trial Typetreatment

Lead OrganizationKumquat Biosciences Inc.

• Primary IDKQB365-101
• Secondary IDsNCI-2025-01560
• ClinicalTrials.gov IDNCT06720987