Shattuck Labs Announces IND for SL-325 is in Effect, Paving Way for Phase 1 Clinical Trial

STTK
November 02, 2025

Shattuck Labs announced that its Investigational New Drug (IND) application submitted to the U.S. Food and Drug Administration (FDA) for SL-325, for the treatment of inflammatory bowel disease, is now in effect. This regulatory clearance allows the company to proceed with human clinical trials.

SL-325 is a potentially first-in-class DR3 blocking antibody, which has demonstrated high-affinity binding to human DR3 and potent inhibition of TL1A binding in preclinical studies. It also showed a favorable safety profile in non-human primate studies.

The company expects to dose the first participant in its Phase 1 clinical trial in healthy volunteers during the third quarter of 2025. Enrollment for this randomized, double-blind, placebo-controlled, single-ascending dose (SAD) and multiple-ascending dose (MAD) trial is anticipated to be completed in the second quarter of 2026.

With the IND in effect and the anticipated aggregate proceeds of up to $103 million from the recent private placement, Shattuck Labs expects to fund its operations into 2029. This financial stability supports the advancement of SL-325 through its initial clinical development.

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