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Shattuck Labs (STTK) investor relations material
Shattuck Labs Corporate presentation summary
Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.Overview and pipeline
Developing potentially first-in-class DR3-blocking monoclonal and bispecific antibodies for inflammatory and immune-mediated diseases.
SL-325 is the lead program; RECEPTIVE-CD1 Phase 2b in Crohn’s disease is ongoing, and RECEPTIVE-HS1 Phase 2b in hidradenitis suppurativa was expected to start in 4Q 2026.
SL-846 is a half-life-extended DR3 × IL-23 receptor bispecific; SL-425 is a half-life-extended DR3 antibody, with additional preclinical bispecifics in development.
DR3-targeting rationale
DR3 is described as constitutively expressed in inflamed and adjacent tissue, while TL1A expression is transient; receptor blockade may provide more complete, durable inhibition of the TL1A/DR3 pathway.
Targeting DR3 rather than soluble TL1A is designed to avoid circulating immune-complex formation; SL-325’s 3.7% Phase 1 ADA rate compares with reported 48–82% rates for anti-TL1A antibodies in similar Phase 1 trials.
Durable inhibition of TL1A binding to DR3 may support quarterly maintenance dosing and a subcutaneous autoinjector-compatible format.
SL-325 phase 1 results
The completed healthy-participant Phase 1 included 72 participants across single- and multiple-ascending-dose cohorts, with doses from 0.1 to 30 mg/kg.
SL-325 was reported as well tolerated across dose levels; no severe or serious adverse events were reported, and one participant discontinued after a mild Grade 1 infusion reaction.
No changes in measured serum cytokines, TL1A concentrations, or assessed immune-cell proportions indicated residual DR3 agonism.
PK increased dose-proportionally from 0.1 to 30 mg/kg; estimated half-life was 16 days, with a repeated-dose accumulation ratio of 1.64–1.75.
A single dose achieved full DR3 occupancy at 0.1 mg/kg; blockade lasted months at doses ≥1 mg/kg, potentially enabling quarterly maintenance dosing.
ADA were detected in 2/54 SL-325-treated participants (3.7%); titers remained low, with no reported impact on PK or receptor occupancy.
- SL-325 Phase 2b trials advance; $196.3M in liquidity supports operations into 2029.STTK
Q3 2026 - SL-325 demonstrates low immunogenicity and durable efficacy, with pivotal trials underway.STTK
Corporate presentation - DR3-targeted therapies show durable efficacy and low immunogenicity, with broad expansion plans.STTK
12th Annual Cantor Fitzgerald Global Healthcare Conference - DR3 blockade targets durable, low-immunogenicity IBD therapy with pivotal data expected in 2028.STTK
Wells Fargo 21st Annual Healthcare Conference - SL-325, a first-in-class DR3 antagonist for IBD, shows superior preclinical efficacy and durability.STTK
Corporate presentation - SL-325, a first-in-class DR3 antagonist for IBD, shows superior preclinical efficacy and safety.STTK
Corporate presentation - SL-325 offers a first-in-class DR3 blockade with durable efficacy and low immunogenicity for IBD.STTK
Corporate presentation - SL-325 completed Phase 1 with strong safety; $208.3M cash funds operations into 2029.STTK
Q2 2026 - Lead DR3 antibody SL-325 shows promise for IBD with strong safety and low immunogenicity.STTK
Corporate presentation
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Next Shattuck Labs earnings date
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