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SL-325

Phase 2

Crohn's Disease | Small molecule | Gastrointestinal |Shattuck Labs, Inc.|Last Updated: Aug 12, 2026

Target and mechanism

Molecular targetDR3
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment232

FDA Designations

No designations recorded

Clinical trial landscape

SL-325 · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07753850A Study of SL-325 in Crohn's Disease PatientsCrohn's Disease
NOT YET_RECRUITING232 Analytics
PHASE2NOT YET_RECRUITING
A Study of SL-325 in Crohn's Disease Patients
Crohn's DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of participants who achieve endoscopic response
Week 12

The proportion of participants who achieve endoscopic response, as defined by a ≥50% decrease in Simplified Endoscopic Score for Crohn's disease (SES-CD) from baseline.

Safety and Tolerability
Day 1 through 75 days after last dose

Incidence and severity of treatment-emergent adverse events

Secondary Endpoints

Proportion of participants who achieve clinical remission
Week 12
Incidence and severity of treatment-emergent adverse events
Week 12
Number of participants who discontinue study intervention due to an TEAE
Week 12
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
SL-325 high doseEXPERIMENTAL -
SL-325 mid doseEXPERIMENTAL -
SL-325 low doseEXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -
SAD: SL-325EXPERIMENTALParticipants will receive a single dose of SL-325 in escalating dose cohorts
SAD: PlaceboPLACEBO_COMPARATORParticipants will receive a single dose of placebo (normal saline)
MAD: SL-325EXPERIMENTALParticipants will receive a three doses of SL-325 in escalating dose cohorts
MAD: PlaceboPLACEBO_COMPARATORParticipants will receive a three doses of placebo (normal saline)

Interventions

NameTypeDescription
SL-325DRUGSL-325 administered intravenously
PlaceboDRUGPlacebo administered intravenously
Placebo (Normal Saline)OTHERNormal saline
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo

Key Inclusion Criteria: * A diagnosis of Crohn's disease confirmed by endoscopy and histopathology ≥ 3 months prior to Screening * Moderately to severely active CD as defined by CDAI of ≥ 220 and ≤ 450 * SES-CD score ≥ 6 if ileocolonic or colonic disease, or ≥ 4 if isolated ileal disease, as assess...

Countries:United States
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Recent Changes (Last 90 Days)

LOWAug 12, 2026NCT07753850lastUpdatePostDate: changed
LOWAug 12, 2026NCT07753850lastUpdatePostDate: changed
LOWAug 11, 2026NCT07753850NEW_TRIAL: changed
LOWAug 11, 2026NCT07753850NEW_TRIAL: changed
LOWAug 11, 2026NCT07753850NEW_TRIAL: changed

Frequently asked questions about SL-325

What is SL-325 used for?

SL-325 is an investigational small molecule being developed for Crohn's Disease. It is also being studied in healthy volunteers as part of early clinical testing. The drug is currently in Phase 2 development for Crohn's Disease, with a Phase 1 study in healthy volunteers also ongoing.

What does SL-325 target?

SL-325 targets DR3, a protein involved in immune signaling. By modulating DR3 activity, the drug is being investigated for its potential to treat Crohn's Disease, a chronic inflammatory condition of the gastrointestinal tract.

Who is developing SL-325?

SL-325 is being developed by Shattuck Labs, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol STTK. The company is conducting clinical trials to evaluate the drug's safety and efficacy in healthy volunteers and patients with Crohn's Disease.

What phase is SL-325 in?

SL-325 is in Phase 2 clinical development for Crohn's Disease. A Phase 1 study in healthy volunteers is also active but not recruiting. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is SL-325 in?

SL-325 is being studied in two clinical trials. NCT07158437 is a Phase 1 study in healthy volunteers, with 72 participants, conducted in the United States. NCT07753850 is a Phase 2 study in Crohn's Disease patients, with 232 participants, which is not yet recruiting.

Is SL-325 the same as any other drug?

No alternative names for SL-325 have been disclosed. The drug is identified solely by its code name SL-325 in clinical trial registrations and company communications.