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A first-in-human, Phase 1/2a, open-label study of SQ3370, a first-in-class doxorubicin-based click chemistry therapeutic, in patients with advanced solid tumors

2025-06-03 oncology Title + abstract only
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BackgroundWe present the first clinical proof of concept using click chemistry to selectively capture drugs at tumors. SQ3370 combines a clickable pre-targeting agent (intratumorally injected biopolymer, SQL70) and a chemically-attenuated doxorubicin (Dox) protodrug (SQP33) that is activated upon clicking with the biopolymer at the tumor to rapidly release high local concentrations of native doxorubicin. MethodsThis was a Phase 1/2a open-label study in patients with advanced solid tumors (NCT04...

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