Press Releases April 7, 2026 08:00 PM

Equillium Announces Poster Presentations at IMMUNOLOGY2026™, the Annual Meeting of the American Association of Immunologists

Equillium to present new promising preclinical data on EQ504 at IMMUNOLOGY2026

By Maya Rios EQ

Equillium, Inc. announced that new preclinical data for its investigational therapy EQ504 will be presented as posters at IMMUNOLOGY2026, highlighting EQ504's potential as a potent AhR modulator with multi-modal, non-immunosuppressive actions aimed at treating autoimmune and inflammatory disorders such as ulcerative colitis and inflammatory lung diseases.

Equillium Announces Poster Presentations at IMMUNOLOGY2026™, the Annual Meeting of the American Association of Immunologists
EQ

Key Points

  • Equillium's EQ504 shows differentiated preclinical results as a potent aryl hydrocarbon receptor (AhR) modulator with potential to promote immune tolerance and epithelial barrier repair.
  • Data will be showcased at a major industry event, IMMUNOLOGY2026, underlining scientific interest and progress in autoimmune/inflammatory disease treatment.
  • EQ504's design aims for targeted local delivery (enteric coating or inhaled formulations), potentially improving therapeutic outcomes in gastrointestinal and lung inflammatory disorders.

LA JOLLA, Calif., April 08, 2026 (GLOBE NEWSWIRE) -- Equillium, Inc. (Nasdaq: EQ), a biotechnology innovator developing novel therapies to treat severe autoimmune and inflammatory disorders, today announced that new EQ504 preclinical data have been accepted for poster presentations at IMMUNOLOGY2026™, the annual meeting of the American Association of Immunologists taking place in Boston, Massachusetts, April 15-19, 2026.

“We are excited to share these preclinical findings that support the differentiated profile of EQ504 as a potent AhR modulator, with the potential to influence both immune cell responses and barrier restoration,” said Dr. Stephen Connelly, Chief Scientific Officer of Equillium. “Together, these attributes are particularly important in diseases such as ulcerative colitis, where both reducing inflammation and improving mucosal healing are critical to achieving meaningful outcomes for patients.”

Details of the presentations:

Abstract title: EQ504: A Novel AhR Modulator That Promotes Immune Tolerance Through Il-10 and Il-22 Cytokine Release
Session: Immune Response Regulation: Cellular Mechanisms I
Presentation Type: Poster Abstract Presentation
Presentation Location & Time: Exhibit Hall, Thursday April 16, 2026
Session Time: 9:00 AM - 4:30 PM EDT
Poster Board Number: 242
Speaker at Poster: 2:30 PM - 3:30 PM EDT

Abstract title: EQ504, a Potent AhR Modulator, Promotes Epithelial Repair and Barrier Restoration Compared to Clinically Validated AhR Agonists
Session: Immunology of Barrier Surfaces
Presentation Type: Poster Abstract Presentation
Presentation Location & Time: Exhibit Hall, Saturday April 18, 2026
Session Time: 9:00 AM - 4:30 PM EDT
Poster Board Number: 517
Speaker at Poster: 11:30 AM - 12:30 PM EDT

Following each presentation, the posters will be available on the Presentations page, located under the Technology section on equilliumbio.com.

About EQ504
EQ504 is an investigational potent and selective aryl hydrocarbon receptor (AhR) modulator with a multi-modal, non-immunosuppressive mechanism of action designed to be complementary to other inflammation and immunology agents. AhR is critical to barrier organ tissue physiology and immunology, maintaining barrier function and promoting tissue repair and regeneration, while regulating resident immune cells with anti-inflammatory responses. EQ504’s preclinical properties provide the potential for targeted, local delivery via enteric coating for the treatment of ulcerative colitis and other gastrointestinal diseases or inhaled formulations for the treatment of inflammatory lung diseases.

About Equillium
Equillium is a biotechnology innovator developing novel therapies to treat severe autoimmune and inflammatory disorders. The company’s lead therapeutic candidate is EQ504, a potent and selective aryl hydrocarbon receptor (AhR) modulator designed with a multi-modal, non-immunosuppressive mechanism of action to be complementary to other inflammation and immunology agents. EQ504 is an investigational therapeutic program with potential for targeted, local delivery via enteric coating for the treatment of ulcerative colitis and other gastrointestinal diseases or inhaled formulations for the treatment of inflammatory lung diseases.

For more information, visit www.equilliumbio.com.

Investor Contact 
PJ Kelleher
LifeSci Advisors, LLC
+1-617-430-7579
[email protected]


Risks

  • EQ504 is still in preclinical stages; successful translation to clinical efficacy and safety in humans is uncertain.
  • The competitive biopharmaceutical market for autoimmune and inflammatory disorders poses developmental and commercial challenges.
  • Regulatory approval risks remain, as EQ504 must meet stringent efficacy and safety criteria before it can reach the market.

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