Equillium, Inc. · NASDAQ:EQ

Equillium — Corporate Update (October 2024)

23 slides from Equillium's corporate update, Oct 31, 2024

  1. Slide 1: Itolizumab Update

    Exhibit 99.1 Itolizumab Update October 31, 2024

  2. Slide 2: Forward-Looking Statements and Other Disclaimers

    Forward-Looking Statements and Other Disclaimers This presentation contains forward-looking statements about Equillium, Inc. (the “Company”). In some cases, you can identify forward-looking statements by the words “will,” “expect,” “intend,” “plan,” “objective,” “believe,” “estimate,” “potential,” “

  3. Slide 3: Equillium Retains Rights to Itolizumab

    Equillium Retains Rights to Itolizumab Ono provided substantial non-dilutive funding for itolizumab through two key milestones: 1. Positive interim data analysis in Phase 3 EQUATOR study of first-line aGVHD: • “Study should proceed” recommendation from the IDMC 2. Positive PoC data in Phase 1b EQUAL

  4. Slide 4: Diversified Pipeline of Differentiated Immunology Assets

    Diversified Pipeline of Differentiated Immunology Assets Indication Pre-Clinical Phase 1 Phase 2 Phase 3 Rights Status FDA Fast Track & Enrollment paused: Potential acceleration acute graft-versus-host disease of topline data to Q1 2025 Orphan Drug Designations US, CAN, EQ001 FDA Fast Track AUS & NZ

  5. Slide 5: Itolizumab: Critical Mass of Safety Data and Positive Clinical Results

    Itolizumab: Critical Mass of Safety Data and Positive Clinical Results Over 1,000 subjects dosed with itolizumab across numerous clinical studies Acute GVHD - Pivotal Phase 3 (ongoing) IDMC Interim Review @ 100 patients in July 2024; recommended study should proceed Acute GVHD - Phase 1b (completed)

  6. Slide 6: Itolizumab: First-in-Class immune-modifying mAb targeting the CD6-ALCAM pathway

    Itolizumab First-in-Class immune-modifying mAb targeting the CD6-ALCAM signaling pathway

  7. Slide 7: CD6-ALCAM Pathway is Central to Immuno-Inflammation

    CD6-ALCAM Pathway is Central to Immuno-Inflammation CD6 is a co-stimulatory receptor overexpressed on T eff T cell eff activation and down-regulated on T reg High CD6 cells exhibit greater pathogenic capacity Activated leukocyte cell adhesion molecule (ALCAM), is expressed on both antigen-presenting

  8. Slide 8: High CD6 Cells Exhibit Greater Pathogenic Capacity

    High CD6 Cells Exhibit Greater Pathogenic Capacity Highest levels of CD6 are found on activated T effector cells (T ) and associated with eff amplification of the auto-reactive cascade low/- high CD6 CD6 • Low proliferation• High Proliferation T • Regulatory phenotype• Pathogenic Phenotypes reg T ef

  9. Slide 9: Itolizumab-induced Loss of Cell Surface CD6 Inhibits Teff Cells

    Itolizumab-induced Loss of Cell Surface CD6 Inhibits T Cells eff Itolizumab leads to loss of CD6 in both a dose and time-dependent † manner resulting in T cells that are hyporesponsive to TCR stimulation Pathogenic hi CD6✱✱✱ ✱✱ T Cells 20000 500000 eff 1.2 400000 15000 0.9 1* 300000 10* 10000 0.6 It

  10. Slide 10: A Differentiated Approach to Treating Immuno-Inflammatory Disease

    A Differentiated Approach to Treating Immuno-Inflammatory Disease Selectively targets auto-reactive effector T cells, while sparing regulatory T cells to promote immune tolerance and homeostasis, resulting in durable disease remission Synergistic inhibition of multiple Inhibition of T Restoration of

  11. Slide 11: Itolizumab Acute Graft-Versus-Host Disease

    Itolizumab Acute Graft-Versus-Host Disease

  12. Slide 12: Itolizumab in GVHD: Executive Summary

    Itolizumab in GVHD: Executive Summary • Positive topline data from Phase 1b EQUATE study in acute graft-versus-host disease • Achieved CR and ORR at Day 29 of 61% and 67%, respectively* • Response at Day 29 was associated with improved progression-free survival through 1 year • Responders were able

  13. Slide 13: GVHD Competitive Landscape

    GVHD Competitive Landscape Growing strategic interest in GVHD with recently demonstrated market potential: JAKAFI: US sales in SR-aGVHD and 2L cGVHD estimated at $500M REZUROCK: US sales in 2L cGVHD estimated at $425M, ~3 years into launch (acquired by Sanofi $1.9B in 2021) Prophylaxis 1L acute GVHD

  14. Slide 14: Standard of Care: High-Dose Steroids Achieve Poor CR Outcomes

    Standard of Care: High-Dose Steroids Achieve Poor CR Outcomes MacMillan Steroids alone yield poor Complete Response rates et al. 2015 GRAVITAS-301 EQUATE (steroids alone) (steroids alone) (itolizumab + steroids) 100% Complete Reponses are associated with improved long-term clinical outcomes Standard

  15. Slide 15: EQUATOR Study: First-line Treatment of High-Risk aGVHD

    EQUATOR Study: First-line Treatment of High-Risk aGVHD Over 50 US clinical sites active, including 9 of top 10 U.S. allogeneic HSCT centers High exposure of itolizumab to key hospital systems and KOLs Phase 3 randomized, double-blind, global pivotal study of itolizumab in ~ 200 patients John Koreth,

  16. Slide 16: Itolizumab Ulcerative Colitis

    Itolizumab Ulcerative Colitis

  17. Slide 17: Itolizumab in Ulcerative Colitis: Executive Summary

    Itolizumab in Ulcerative Colitis: Executive Summary Strong mechanistic rationale Near term Phase 2 clinical data in GI disease read out high • CD6 T cells have greater • Itolizumab vs. placebo vs. adalimumab eff pathogenic potential and are study complete (n=90) associated with GI inflammation • Top

  18. Slide 18: UC Phase 2 Study – Conducted by Biocon in India

    UC Phase 2 Study – Conducted by Biocon in India Itolizumab Q2W + SoC + SoC (Fixed Dose 140 mg) ltolizumab Q2W + SoC N=3 n=30 Primary endpoint: Proportion of subjects who Biologics naive achieved clinical remission patients with Placebo + SoC per Total Mayo Score at moderate to severe Placebo + SoC W

  19. Slide 19: Corporate

    Equill equi uM Corporate

  20. Slide 20: Itolizumab Intellectual Property & Regulatory Exclusivity

    Itolizumab Intellectual Property & Regulatory Exclusivity Biologics Exclusivity 12 years Itolizumab Compositions / Methods 12 patent families Formulations 27 issued patents 34 applications pending Method of Treating MS and IBD (as of October 2024) Method of Inhibiting CD6 Method of Treating Lupus Me

  21. Slide 21: Equillium Financial Overview

    Equillium Financial Overview Key Financial Metrics $ Total Cash and Investments (as of June 30, 2024) 33.3 M $ Q2 2024: Net Cash Generated (as of June 30, 2024) 0.7 M Equillium funded * Shares Outstanding (as of August 5, 2024) 35.4 M into Q4 2025 $ Market Cap (as of close October 30, 2024) 48.9 M P

  22. Slide 22: Equillium Summary

    Equillium Summary Anticipated Major Milestones Itolizumab Derisked • Phase 3 aGVHD topline data – potential to • EQUATOR Phase 3 interim safety and efficacy review July 2024: accelerate to Q1 2025 (modified study) IDMC recommended study to proceed as planned • Phase 2 Ulcerative Colitis data expecte

  23. Slide 23: Thank you

    Thank you www.equilliumbio.com 23

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