SL-325 in Crohn's Disease: a phase 2 test for adults with moderate to severe disease
Official title: A Phase 2 Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of SL-325 in Participants With Moderately to Severely Active Crohn's Disease
Run by Shattuck Labs, Inc. · NCT07753850 · Data updated 2026-11-12
This phase 2 study tests SL-325 against placebo in adults with moderately to severely active Crohn's disease to see if it helps improve symptoms and disease activity.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 80 Years |
| Sex | All |
| Enrollment | 232 (estimated) |
| Sponsor | Shattuck Labs, Inc. Industry-sponsored |
| Locations | 20 sites (Little Rock, Arkansas and 19 other locations) |
| Status | Recruiting |
| Started | October 21, 2026 |
| Main results expected | July 2028 |
| Study ends | June 2030 |
| Registry record updated | November 3, 2026 |
| Trial ID | NCT07753850 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with moderate to severely active Crohn's disease, confirmed by endoscopy and histopathology, who have not adequately responded to standard therapies.
✕Probably not a fit
Patients with Crohn's disease outside the specified activity range or with excluded disease locations or complications may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This randomized, controlled phase 2 trial evaluates the efficacy of SL-325 in adults with moderate to severely active Crohn's disease. Participants undergo a screening period, a 12-week induction, a 38-week maintenance, a 52-week long-term extension, and a 10-week follow-up, with placebo as the comparator. Inclusion requires established Crohn's diagnosis, 특정 CDAI range, and prior inadequate response or intolerance to standard Crohn's therapies. Exclusion criteria remove those with non-Crohn GI conditions or Crohn's limited to non-colonic/ileal sites or with certain complications. Primary sponsor is Shattuck Labs, with sites in Little Rock, AR; Oxnard, CA; and Temple City, CA.
Why it matters
Potential benefit: If successful, participants could experience improved Crohn's symptoms and disease control with SL-325.
How similar studies have gone: Other Crohn's disease studies with targeted therapies have shown benefit in similar populations, though this exact agent is novel for Crohn's.
Who can join: the full rules
Show full inclusion / exclusion criteria
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 assessed by central review * Demonstrated inadequate response, loss of response, or intolerance to one or more of the following Crohn's disease treatments: corticosteroids, immunomodulators, or an approved anti-tumor necrosis factor (TNF), anti-integrin, anti-interleukin (IL)-12/23, anti-interleukin (IL)-23p19, or Janus kinase inhibitor (JAK) Key Exclusion Criteria: * Diagnosis of UC, indeterminate colitis, or any other gastrointestinal condition that could undermine the diagnosis of CD * CD isolated to the stomach, duodenum, jejunum, or perianal region, without colonic and/or ileal involvement * Presence or suspicion of any of the following CD complications: intra-abdominal or perianal abscess; symptomatic stricture or colonic stenosis not passable in ileocolonoscopy, fistula, except for perianal fistula; active toxic megacolon or fulminant colitis; short bowel syndrome * Surgical bowel resection within 3 months before Screening, ≥ 3 bowel resections, or previous ileo-colonic resection of \> 2 segments * Diagnosis of primary sclerosing cholangitis * Has a stoma, ileostomy, or colostomy. * Has prior or current gastrointestinal dysplasia, other than a completely removed low-grade dysplastic lesion. * Has active tuberculosis (TB) or inadequately treated latent tuberculosis (LTBI) * Prior exposure to any anti-DR3 or anti-TL1A agent or agent with an anti-DR3 or anti-TL1A component
Where it's running
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Clinical Trial Site
Kissimmee, Florida, United States Recruiting -
Clinical Trial Site
Little Rock, Arkansas, United States Not yet recruiting -
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Oxnard, California, United States Not yet recruiting -
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Temple City, California, United States Not yet recruiting -
Clinical Trial Site
West Hills, California, United States Not yet recruiting -
Clinical Trial Site
Inverness, Florida, United States Not yet recruiting
Show 14 more locations
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Naples, Florida, United States Not yet recruiting -
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Orlando, Florida, United States Not yet recruiting -
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Tampa, Florida, United States Not yet recruiting -
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Kansas City, Kansas, United States Not yet recruiting -
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Houma, Louisiana, United States Not yet recruiting -
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Marrero, Louisiana, United States Not yet recruiting -
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Glen Burnie, Maryland, United States Not yet recruiting -
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Boston, Massachusetts, United States Not yet recruiting -
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Liberty, Missouri, United States Not yet recruiting -
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St Louis, Missouri, United States Not yet recruiting -
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Maspeth, New York, United States Not yet recruiting -
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Cincinnati, Ohio, United States Not yet recruiting -
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Columbus, Ohio, United States Not yet recruiting -
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Nashville, Tennessee, United States Not yet recruiting
Study contacts
- Study coordinator: Shattuck Medical Director
- Email: clinicaltrials@shattucklabs.com
- Phone: 919-864-2700
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.