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Equillium Reports Fourth Quarter and Full Year 2024 Financial Results and Recent Corporate and Clinical Highlights

In This Article:

Announced topline data from the Phase 3 EQUATOR study in first-line acute graft-versus-host disease

Breakthrough Therapy designation and meeting request to discuss potential for Accelerated Approval submitted to FDA, feedback expected during May 2025

LA JOLLA, Calif., March 27, 2025--(BUSINESS WIRE)--Equillium, Inc. (Nasdaq: EQ), a clinical-stage biotechnology company leveraging a deep understanding of immunobiology to develop novel therapeutics to treat severe autoimmune and inflammatory disorders, today announced financial results for the fourth quarter and full year 2024, as well as corporate and clinical highlights.

"This morning, following considerable efforts by our clinical team, we announced topline data from the Phase 3 EQUATOR study evaluating itolizumab in first-line treatment of acute graft-versus-host disease," said Bruce Steel, chief executive officer at Equillium. "While we did not meet Day 29 outcomes of complete response - our primary endpoint - and overall response rate, itolizumab did demonstrate statistically significant and clinically meaningful benefit in important longer-term outcomes, including complete response at Day 99, duration of complete response and failure-free survival. These longer-term outcomes are critically important for aGVHD patients – a rare disease with no approved therapies and overall survival at one-year as low as 40 percent. Based on these data and prior FDA guidance, we have submitted a request for Breakthrough Therapy designation and have been granted a meeting with the FDA to discuss the potential for Accelerated Approval of itolizumab for first-line treatment of aGVHD, an indication where itolizumab has already received Orphan Drug and Fast Track designations. We expect feedback from the FDA during May 2025 and, if positive, subject to raising additional capital, we would plan to submit a biologics license application during the first half of 2026."

Recent Corporate & Clinical Highlights:

  • Announced topline data from the Phase 3 EQUATOR study in first-line acute graft-versus-host disease (aGVHD) demonstrating a favorable safety and tolerability profile, and clinically meaningful longer-term outcomes. There was no meaningful difference in complete response (CR) and overall response rate (ORR) at Day 29 between itolizumab patients and placebo patients, but statistical significance and/or clinically meaningful benefit in longer term outcomes were achieved by itolizumab in the following measurements1:

    • Statistical significance in duration of CR favoring itolizumab, with a median 336 days vs. 72 days, p-value 0.017

    • Statistical significance in failure-free survival favoring itolizumab, with a median 154 days vs. 70 days, p-value 0.043

    • Statistical significance in CR at Day 99 favoring itolizumab, with 35 (44.9%) vs. 22 (28.6%) patients, p-value 0.035

    • Positive trend in overall survival favoring itolizumab, with mortality of 19 (24.4%) vs. 25 (32.5%) patients

    • Steroid tapering and rates of primary disease relapse and chronic graft-versus-host disease were similar for both treatment arms

  • Announced positive topline data from a Phase 2 study evaluating itolizumab in the treatment of moderate to severe ulcerative colitis (UC). Itolizumab demonstrated clinical efficacy after 12 weeks of treatment, achieving a clinical remission rate of 23.3% compared to 20.0% for adalimumab and 10.0% for placebo. Itolizumab also achieved key secondary endpoint of endoscopic remission of 16.7% compared to 16.7% for adalimumab and 6.7% for placebo and was generally well tolerated consistent with prior clinical experience.

  • Presented data on the dual and synergistic signaling of IL-15 and IL-21 – targets of EQ302 - highlighting that a single agent would be optimal to inhibit or activate both cytokines known to drive aggressive T and NK cell responses that promote the cytolytic activity and interferon gamma production observed in multiple inflammatory diseases.