Aldeyra Therapeutics, Inc. · NASDAQ:ALDX

Aldeyra Therapeutics — Investor Day (February 2019)

136 slides from Aldeyra Therapeutics's investor day presentation, Feb 28, 2019

  1. Slide 1: R&D Day 2019 Update on Research Programs

    R&D Day 2019 Update on Research Programs February 28, 2019 Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  2. Slide 2: Disclaimers and Forward-Looking Statements

    Disclaimers and Forward-Looking Statements This presentation and various remarks which may be made during this presentation contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and Section 21E of the Securities Exchange Act of 1934, as amended

  3. Slide 3: Agenda

    Agenda • Opening Welcome Todd Brady, CEO • Corporate Strategy & Pipeline Growth David McMullin, CCO • Proliferative Vitreoretinopathy – A Rare Retinal Disease Dean Eliott, M.D. Harvard Medical School Mass. Eye and Ear Infirmary • Ocular Disease Area Program Updates David Clark, CMO • Ocular Disease

  4. Slide 4: Our Mission

    Our Mission Developing Next-Generation Medicines to Improve the Lives of Patients with Immune-Mediated Diseases Disease control Suffer from some elusive despite form of immune- ~7% Of Western Society mediated disease, and incidence is Unmet Needs existing therapies, and thus novel approaches increas

  5. Slide 5: Immune System Imbalance Leads to Immune-Mediated Disease

    Immune System Imbalance Leads to Immune-Mediated Disease Immune Balance Inhibition Stimulation Healthy Inhibition Imbalance Stimulation Imbalance Imbalance can result in… Immune-Mediated Diseases Cancer Autoimmune Immuno- Allergy proliferative 5

  6. Slide 6: Deliberate Focus on Ocular Diseases and Select Systemic Diseases

    Deliberate Focus on Ocular Diseases and Select Systemic Diseases 2004 … May 2014 2015 2016 2017 2018 2019 Founded IPO; First Phase 2 First Phase 2 First Phase 3 Add’l Phase 2; Potential First First Phase 2 Initiations Completions Initiations Add’l Phase 3 Phase 3 Completions* IND filing RASP Dry Eye

  7. Slide 7: Our Novel Approaches to Address Immune-Mediated Disease

    Our Novel Approaches to Address Immune-Mediated Disease Stimulus ✓ ADX-1612 Hsp90 RASP ✓✓ Reproxalap ADX-103 ✓ ADX-1615 Inhibitors Inhibitors ✓ ADX-629 Immune Cell Cell DHFR Cell Proliferation Inhibitors Activation RASP = Reactive Aldehyde Species ✓ ADX-2191 DHFR = Dihydrofolate Reductase Hsp90 = He

  8. Slide 8: Deep and Innovative Pipeline Focused on Immune-Mediated Diseases

    Deep and Innovative Pipeline Focused on Immune-Mediated Diseases Preclinical Phase 1 Phase 2 Phase 3 Next Anticipated Milestone Disease Area Compound [Mechanism] Indication Reproxalap [RASP] Dry Eye Disease ✓ ✓ Phase 3-Part 1 initiation H1 2019 Allergic Conjunctivitis ✓ ✓ Phase 3 results early 2019

  9. Slide 9: Helio Vision Acquisition Expands Pipeline in Support of Our Strategic Growth Plans

    Helio Vision Acquisition Expands Pipeline in Support of Our Strategic Growth Plans Retinal disease a strategic priority for pipeline growth Novel therapeutic approach leveraging an immunological mechanism that diminishes inflammation and cell proliferation Addition of Phase 3-ready clinical program

  10. Slide 10: Proliferative Vitreoretinopathy – A Rare Retinal Disease

    Proliferative Vitreoretinopathy – A Rare Retinal Disease Dean Eliott, M.D. Professor of Ophthalmology at Harvard Medical School, and Director of the Retina Service at Massachusetts Eye and Ear Infirmary Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  11. Slide 11: Multiple Intravitreal Injections of Methotrexate for the Prevention of PVR

    Multiple Intravitreal Injections of Methotrexate for the Prevention of Proliferative Vitreoretinopathy

  12. Slide 12: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) A severe scarring condition that develops after retinal detachment surgery

  13. Slide 13: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) A severe scarring condition The leading cause of failure that develops after retinal after retinal detachment detachment surgery surgery

  14. Slide 14: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) A severe scarring condition The leading cause of failure that develops after retinal after retinal detachment detachment surgery surgery PVR is an unsolved problem

  15. Slide 15: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) Normal Retina

  16. Slide 16: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) Normal Retina Retinal Detachment Retinal tear

  17. Slide 17: Proliferative Vitreoretinopathy (PVR)

    Proliferative Vitreoretinopathy (PVR) Normal Retina Retinal Detachment Recurrent Retinal Detachment due to PVR Retinal tear PVR membranes

  18. Slide 18: Epiretinal Membrane

    Epiretinal Membrane Normal Retina Epiretinal Membrane

  19. Slide 19: Epiretinal Membrane

    Epiretinal Membrane OCT scan (cross section)

  20. Slide 20: Epiretinal Membrane

    Epiretinal Membrane OCT scan (cross section)

  21. Slide 21: Who gets PVR?

    Who gets PVR? Primary Retinal Detachment

  22. Slide 22: Who gets PVR?

    Who gets PVR? Primary Retinal Surgery Detachment

  23. Slide 23: Who gets PVR?

    Who gets PVR? Primary Retinal Recurrent Surgery Retinal Detachment Detachment due to PVR 10%

  24. Slide 24: Who gets PVR?

    Who gets PVR? Primary Retinal Recurrent Surgery Retinal Detachment Detachment due to PVR 10% Up to 50% for high risk cases

  25. Slide 25: Who gets PVR?

    Who gets PVR? Primary Retinal Recurrent Recurrent Surgery Retinal Retinal Detachment Detachment Detachment due to PVR due to PVR 10% 50% Up to 50% for high risk cases

  26. Slide 26: Who gets PVR?

    Who gets PVR? 3.7 surgeries Primary Retinal Recurrent Recurrent Surgery Retinal Retinal Detachment Detachment Detachment due to PVR due to PVR 10% 50% Up to 50% for high risk cases

  27. Slide 27: Who gets PVR?

    Who gets PVR? Retinal Detachment Associated with Open Globe Injury

  28. Slide 28: Who gets PVR?

    Who gets PVR? Retinal Detachment Surgery Associated with Open Globe Injury

  29. Slide 29: Who gets PVR?

    Who gets PVR? Retinal Detachment Recurrent Surgery Retinal Associated with Detachment Open Globe Injury due to PVR 50%

  30. Slide 30: Risk Factors for PVR

    Risk Factors for PVR Genetics Ocular Factors Behavioral Factors

  31. Slide 31: Risk Factors for PVR

    Risk Factors for PVR Genetics Ocular Factors Behavioral Factors

  32. Slide 32: Risk Factors for PVR

    Risk Factors for PVR Genetics Ocular Factors Behavioral Factors • post-trauma • uveitis • high myopia • large/giant breaks • multiple breaks • vitreous hemorrhage • choroidal detachment • early PVR

  33. Slide 33: Risk Factors for PVR

    Risk Factors for PVR Genetics Ocular Factors Behavioral Factors • post-trauma • uveitis • high myopia • large/giant breaks • multiple breaks • vitreous hemorrhage • choroidal detachment • early PVR

  34. Slide 34: Burden of PVR

    Burden of PVR • Multiple surgeries (average = 3.7) • Cost (~$8,000/surgery) • Each retinal detachment results in further permanent visual loss • Each surgery requires a period of face down positioning

  35. Slide 35: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • Heparin and dexamethasone • Daunorubicin • Triamcinolone acetonide • Prednisone • 5-Fluorouracil and low-molecular-weight heparin • Ribozyme to proliferating cell nuclear antigen

  36. Slide 36: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • One-time injection at conclusion of surgery

  37. Slide 37: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • One-time injection at conclusion of surgery Ophthalmology 115:1938-1943,2008 Arch Ophthalmol 125:1161-1167;2007

  38. Slide 38: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • One-time infusion during or at conclusion of surgery

  39. Slide 39: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • One-time infusion during or at conclusion of surgery Graefe’s Arch Clin Exp Oph 234,1996 Am J Ophthalmol 126:550-559,1998

  40. Slide 40: Pharmacologic Trials to Prevent PVR

    Pharmacologic Trials to Prevent PVR • One-time infusion during or at conclusion of surgery Ophthalmology 108:1179-1183,2001 Ophthalmology 111:2240-2245,2004 Ophthalmology 114:698-704,2007

  41. Slide 41: Clinical Development of PVR

    Clinical Development of PVR PVR peaks 2-3 months

  42. Slide 42: Clinical Development of PVR

    Clinical Development of PVR PVR peaks earlier in open globe injury cases

  43. Slide 43: Clinical Development of PVR

    Clinical Development of PVR Growth factors and cytokines that are implicated in PVR. Growth factor/cytokine EGF epidermal growth factor FGF-2 fibroblast growth factor-2 G-CSF granulocyte colony stimulating factor GM-CSF granulocyte-macrophage-CSF IFNy interferon gamma ————_ IL-1p interleukin-1 beta

  44. Slide 44: Clinical Development of PVR

    Clinical Development of PVR one-time exposure

  45. Slide 45: Clinical Development of PVR

    Clinical Development of PVR one-time inhibit all of exposure these factors

  46. Slide 46: Clinical Development of PVR

    Clinical Development of PVR one-time inhibit all of sustained over exposure these factors this entire time

  47. Slide 47: Clinical Development of PVR

    Clinical Development of PVR one-time inhibit all of sustained over exposure these factors this entire time There is a need for repeated injections

  48. Slide 48: Chorioretinal Biopsy

    Chorioretinal Biopsy

  49. Slide 49: Clinical Observation

    Clinical Observation Ocular lymphoma patients who undergo chorioretinal biopsy do not develop scar tissue (epiretinal membrane or PVR) if they receive serial intravitreal methotrexate injections

  50. Slide 50: Chorioretinal Biopsy

    Chorioretinal Biopsy Lymphoma, Pre-treatment Lymphoma, Post-treatment Lymphoma Biopsy site infiltrates without scar tissue

  51. Slide 51: Chorioretinal Biopsy

    Chorioretinal Biopsy Lymphoma, Pre-treatment Lymphoma, Post-treatment Biopsy site without scar tissue

  52. Slide 52: Chorioretinal Biopsy

    Chorioretinal Biopsy Lymphoma, Pre-treatment Lymphoma, Post-treatment Biopsy site without scar tissue

  53. Slide 53: Chorioretinal Biopsy

    Chorioretinal Biopsy

  54. Slide 54: Chorioretinal Biopsy

    Chorioretinal Biopsy What accounts for this finding?

  55. Slide 55: Chorioretinal Biopsy

    Chorioretinal Biopsy Methotrexate?

  56. Slide 56: Methotrexate

    Methotrexate • chemotherapeutic agent – inhibits dihydrofolate reductase • folate essential in thymidine systhesis folate methotrexate

  57. Slide 57: Methotrexate

    Methotrexate • chemotherapeutic agent – inhibits dihydrofolate reductase • folate essential in thymidine systhesis approved for a variety of cancers

  58. Slide 58: Methotrexate

    Methotrexate • chemotherapeutic agent – inhibits dihydrofolate reductase • folate essential in thymidine systhesis multiple routes of administration low systemic toxicity

  59. Slide 59: Methotrexate

    Methotrexate • antiinflammatory agent

  60. Slide 60: Methotrexate

    Methotrexate • antiinflammatory agent – different mechanism of action • inhibits T cell activation • selective down-regulation of B cells • binds IL-1 beta

  61. Slide 61: Methotrexate

    Methotrexate • antiinflammatory agent – different mechanism of action • inhibits T cell activation • selective down-regulation of B cells • binds IL-1 beta approved for rheumatoid arthritis

  62. Slide 62: Inflammation PVR pathway

    Inflammation PVR pathway - blood-ocular barrier breakdown Growth factors - bFGF, PDGF Cellular proliferation - RPE, glia, macrophages, fibroblasts Membrane contraction - extracellular matrix / collagen

  63. Slide 63: Good candidate for PVR

    Inflammation Good candidate for PVR - blood-ocular barrier breakdown antiinflammatory antiproliferative Growth factors - bFGF, PDGF Cellular proliferation - RPE, glia, macrophages, fibroblasts Membrane contraction - extracellular matrix / collagen

  64. Slide 64: Methotrexate

    Methotrexate • used intravitreally for vitreoretinal lymphoma – low ocular toxicity, despite repeated injections Ophthalmology 109:1709-1716,2002

  65. Slide 65: Methotrexate

    Methotrexate • used intravitreally for vitreoretinal lymphoma – evidence of safety in oil Retina 28:1082-1086,2008

  66. Slide 66: Phase 1 Study

    Phase 1 Study • 10 patients – prospective study – IND from FDA – IRB approval

  67. Slide 67: Phase 1 Study

    Phase 1 Study • 10 patients • 10 injections over 3 month period – prospective study • 1 at end of surgery – IND from FDA • weekly x 8 – IRB approval • 1 at 3 months

  68. Slide 68: Phase 1 Study

    Phase 1 Study • 10 patients – 2 severe trauma with retinal incarceration in scleral wound – 8 recurrent retinal detachment / PVR • multiple prior surgeries – median preop VA: HM

  69. Slide 69: Phase 1 Study

    Phase 1 Study • 10 patients – surgery • all underwent extensive retinectomy • all had silicone oil – protocol • 99% compliance (99 out of 100 injections)

  70. Slide 70: Phase 1 Study

    Phase 1 Study • Trauma patient #1 – 37 mm scleral rupture, zone 3 • retina incarcerated in scleral wound Ultrasound showing total retinal detachment

  71. Slide 71: Phase 1 Study

    Phase 1 Study • Trauma patient #1 – postop month 4 20/65

  72. Slide 72: Phase 1 Study

    Phase 1 Study • Trauma patient #1 – postop year 5 20/65

  73. Slide 73: Phase 1 Study

    Phase 1 Study • Trauma patient #2 – 13 mm scleral rupture, zone 3 • retina incarcerated in scleral wound Ultrasound showing total retinal detachment

  74. Slide 74: Phase 1 Study

    Phase 1 Study • Trauma patient #2 – postop week 7 20/160

  75. Slide 75: Phase 1 Study

    Phase 1 Study • Trauma patient #2 – postop week 12 20/160

  76. Slide 76: Phase 1 Study

    Phase 1 Study • Trauma patient #2 – postop week 16 20/160

  77. Slide 77: Phase 1 Study

    Phase 1 Study • Trauma patient #2 – postop year 2 Light Perception

  78. Slide 78: Phase 1 Study

    Phase 1 Study • Trauma patient #2 no PVR severe PVR

  79. Slide 79: Phase 1 Study

    Phase 1 Study • Trauma patient #2 no PVR severe PVR

  80. Slide 80: Phase 1 Study

    Phase 1 Study • 10 patients – none developed hypotony – 3 developed subretinal fluid

  81. Slide 81: Phase 1 Study

    Phase 1 Study • 10 patients – none developed hypotony – 3 developed subretinal fluid • microscopic PVR?

  82. Slide 82: Phase 1 Study

    Phase 1 Study • 10 patients – none developed hypotony – 3 developed subretinal fluid • microscopic PVR? • intrinsic retinal contraction?

  83. Slide 83: Phase 1 Study

    Phase 1 Study • 10 patients – none developed hypotony – 3 developed subretinal fluid • microscopic PVR? • intrinsic retinal contraction? • inadequate laser-induced chorioretinal adhesion?

  84. Slide 84: Phase 1 Study

    Phase 1 Study • Patient #5 – preop

  85. Slide 85: Phase 1 Study

    Phase 1 Study • Patient #5 – postop week 6 Subretinal fluid

  86. Slide 86: Phase 1 Study

    Phase 1 Study • Patient #5 – after reoperation 20/200

  87. Slide 87: Phase 1 Study

    Phase 1 Study • Patient #3 – epiretinal membrane Epiretinal membrane

  88. Slide 88: Lab Studies

    Lab Studies • cultures of patient membranes

  89. Slide 89: Methotrexate inhibits proliferation of cultured PVR cells

    phase contrast immunofluorescence control 100 mM methotrexate inhibits proliferation of cultured PVR cells 200 mM 400 mM

  90. Slide 90: Methotrexate inhibits proliferation of cultured PVR cells

    phase contrast immunofluorescence control 100 mM 200 mM 400 mM

  91. Slide 91: Methotrexate inhibits band formation in cultured PVR cells

    control 100 mM methotrexate inhibits band formation in cultured PVR cells 200 mM 400 mM

  92. Slide 92: Lab Studies

    Lab Studies Effect of Methotrexate on an In Vitro Patient-Derived Model of Proliferative Vitreoretinopathy Dhanesh Amarnani,' Arturo Israel Machuca-Parra,' Lindsay L. Wong,' Christina K. Marko,' James A. Stefater,? Tomasz P. Stryjewski,? Dean Eliott, Joseph E Arboleda-Velasquez,' and Leo A. Kim'?

  93. Slide 93: Helio Vision Co-Founders

    Helio Vision Co-Founders Josef von Rickenbach Tomasz Stryjewski ▪ Founder, Chairman, and former CEO of ▪ Chief Resident and Director of the Eye Trauma PAREXEL, one of the world’s leading Service at Mass. Eye and Ear biopharmaceutical services providers ▪ Ophthalmology residency at Mass. Eye and Ear/

  94. Slide 94: 16 Additional Eyes

    16 Additional Eyes • 8 recurrent retinal detachment / PVR • 8 open globe injuries

  95. Slide 95: 16 Additional Eyes

    16 Additional Eyes • 8 recurrent retinal detachment / PVR • 8 open globe injuries – 13 injections / patient

  96. Slide 96: 16 Additional Eyes

    16 Additional Eyes • 8 recurrent retinal detachment / PVR • 8 open globe injuries – 13 injections / patient – >95% compliance

  97. Slide 97: 16 Additional Eyes

    16 Additional Eyes • 8 recurrent retinal detachment / PVR • 8 open globe injuries – 13 injections / patient • 1 developed retinal detachment / PVR • 2 developed hypotony • 3 eyes minimal epiretinal membranes

  98. Slide 98: Strong Human Efficacy Data

    Strong Human Efficacy Data HV001 injections End of six-month PVR re-detachment risk window protocol Initial used in pivotal protocol to be Key Grade C PVR patient Revised Open globe injury with RD trial RD caused by PVR Open globe injury3 Recurrent RD with no observable PVR -10 -5 0 5 10 15 20 25 30

  99. Slide 99: Initial Eyes + 16 Additional Eyes

    10 Initial Eyes +16 Additional Eyes Percent of patients with at least one re-detachment due to any cause Grade C PVR Open globe injury All patients HV001 Initial protocol 38% (3/8) 50% (1/2) 40% (4/10) Revised protocol 0% (0/8) 13% (1/8) 6% (1/16) (Protocol to be used in pivotal trial) Combined 19%

  100. Slide 100: Planned Phase III Trial Design

    Planned Phase III Trial Design Control Arm Intervention Arm 100 Subjects 100 subjects Routine Surgical Care Routine Surgical Care Experimental Care Plars Plana Vitrectomy Plars Plana Vitrectomy Injection #1: Intraoperatively Operative Day 0 Methotrexate 400mcg/0.1ml Routine Post-Op Visit Routine Pos

  101. Slide 101: Summary

    Summary • Methotrexate a promising candidate to study for the prevention of PVR – antiproliferative – antiinflammatory • Repeat injections match disease time-course • Safety and efficacy demonstrated in Phase 1b study in humans & additional eyes

  102. Slide 102: Ocular Disease Area Program Updates

    Ocular Disease Area Program Updates • Proliferative Vitreoretinopathy • Allergic Conjunctivitis • Dry Eye Disease • Upcoming Milestones Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  103. Slide 103: Ocular Disease Area Program Updates

    Ocular Disease Area Program Updates • Proliferative Vitreoretinopathy • Allergic Conjunctivitis • Dry Eye Disease • Upcoming Milestones Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  104. Slide 104: ADX-2191: Adaptive Phase 3 PVR Clinical Program Expected to Initiate H2 2019

    ADX-2191: Adaptive Phase 3 Proliferative Vitreoretinopathy Clinical Program Expected to Initiate H2 2019 Adaptive Phase 3 Program Phase 3 Program Design Elements Expected initiation H2 2019 Part 1 controlled, randomized trial design Adaptive Phase 3 Adaptive Phase 3 (Part 2) Confirm endpoints, (Part

  105. Slide 105: ADX-2191: Adaptive Phase 3 (Part 1) PVR Clinical Trial Design

    ADX-2191: Adaptive Phase 3 (Part 1) Proliferative Vitreoretinopathy Clinical Trial Design • Primary objective: Adaptive Phase 3 PVR Clinical Trial Design: Part 1 – Evaluate efficacy of intravitreal ADX-2191 injections for Operative Post-Op Post-Op Post-Op Post-Op Post-Op prevention of recurrent reti

  106. Slide 106: Ocular Disease Area Program Updates

    Ocular Disease Area Program Updates • Proliferative Vitreoretinopathy • Allergic Conjunctivitis • Dry Eye Disease • Upcoming Milestones Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  107. Slide 107: Reproxalap: Adaptive Phase 3 Dry Eye Disease Clinical Program

    Reproxalap: Adaptive Phase 3 Dry Eye Disease Clinical Program Expected to Initiate H1 2019 Adaptive Phase 3 Program Phase 3 Program Design Elements Confirm symptom and Expected initiation H1 2019 sign endpoints from Adaptive DED Adaptive DED Phase 3 Phase 2b trial Phase 3 (Part 1) (Part 2) Confirm d

  108. Slide 108: Reproxalap: Adaptive Phase 3 (Part 1) Dry Eye Disease Trial Design

    Reproxalap: Adaptive Phase 3 (Part 1) Dry Eye Disease Clinical Trial Design • Primary objective: Phase 3 Dry Eye Disease Clinical Trial: Part 1 – Evaluate efficacy of reproxalap ophthalmic solution Visit 1 Visit 2 Visit 3 Visit 4 Visit 5 Visit 6 Visit 7 Visit 8 Visit 9 (0.25%) vs. vehicle to confirm

  109. Slide 109: Reproxalap: Adaptive Phase 3 (Part 2) Dry Eye Disease Trial Design

    Reproxalap: Adaptive Phase 3 (Part 2) Dry Eye Disease Clinical Trial Design Phase 3 Dry Eye Disease Clinical Trial: Part 1 Phase 3 Dry Eye Disease Clinical Trial: Part 2 Visit 1 Visit 2 Visit 3 Visit 4 Visit 5 Visit 6 Visit 7 Visit 8 Visit 9 Week -2 Day 1 Wk 1 Wk 2 Week 4 Week 6 Week 8 Week 10 Week

  110. Slide 110: Reproxalap: Dry Eye Symptom and Sign Endpoints Achieved in Phase 2b

    Reproxalap: Dry Eye Disease Symptom and Sign Endpoints Achieved in Phase 2b Clinical Trial Primary Symptom Endpoint for Phase 3 DED Primary Sign Endpoint for Phase 3 DED OD & 4-Symptom Questionnaire: Dryness (0-5) Fluorescein Staining: Nasal (0-4) Baseline Score > 3 (N=69|69) Baseline Score > 2 (N=6

  111. Slide 111: Ocular Disease Area Program Updates

    Ocular Disease Area Program Updates • Proliferative Vitreoretinopathy • Allergic Conjunctivitis • Dry Eye Disease • Upcoming Milestones Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  112. Slide 112: Reproxalap: ALLEVIATE Phase 3 Trial Design in Allergic Conjunctivitis

    Reproxalap: ALLEVIATE Phase 3 Trial Design in Allergic Conjunctivitis Phase 3 Conjunctival Allergen Challenge Trial • Primary objective: Reproxalap Allergen Patient Reported – Evaluate efficacy of reproxalap ophthalmic solutions Administration Challenge Itch Assessment (0.25% & 0.5%) compared to veh

  113. Slide 113: Reproxalap: AC Ocular Itch Endpoints Achieved in Phase 2b

    Reproxalap: AC Ocular Itch Area Under The Curve and Responder Endpoints Achieved in Phase 2b Clinical Trial Area Under the Curve: Ocular Itch Score (0-4) Probability of Response: Ocular Itch Score (0-4) Improvement in itch score over one hour after allergen Clinically significant response rate of re

  114. Slide 114: Reproxalap's Novel Mechanism Could Provide More Durable Activity Than Antihistamines

    Reproxalap’s Novel Mechanism of Action has the Potential to Provide More Durable Activity Than Antihistamines Histaminic Phase Post-Histaminic Phase (RASP-Mediated) (Cells, cytokines, and other aldehyde-stimulated factors) Reproxalap Activity Antihistamine Activity 0 10 20 30 40 50 60 Minutes Follow

  115. Slide 115: Reproxalap: Parallel DED and AC Phase 3 Programs Support Concurrent NDA Filings

    Reproxalap: Parallel Dry Eye Disease and Allergic Conjunctivitis Phase 3 Clinical Programs Support Concurrent NDA Filings Dry Eye Disease Expected initiation H1 2019 Adaptive Phase 3 Clinical Program Adaptive DED Adaptive DED Phase 3 Phase 3 (Part 1) (Part 2) Confirmatory DED Phase 3 Phase 3 DED Saf

  116. Slide 116: Ocular Disease Area Program Updates

    Ocular Disease Area Program Updates • Proliferative Vitreoretinopathy • Allergic Conjunctivitis • Dry Eye Disease • Upcoming Milestones Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  117. Slide 117: Multiple Upcoming Ocular Disease Area Clinical Program Milestones

    Multiple Upcoming Ocular Disease Area Clinical Program Milestones Ocular Disease Area Anticipated Milestones* 2019 2020 Early 2019: Reproxalap ALLEVIATE Phase 3 Results allergic conjunctivitis trial H1 2019: Reproxalap Phase 3 dry eye Initiate disease clinical trial program H2 2019: Reproxalap SOLAC

  118. Slide 118: Ocular Disease Area Market Opportunities

    Ocular Disease Area Market Opportunities • Proliferative Vitreoretinopathy • Noninfectious Anterior Uveitis • Dry Eye Disease and • Pathway to Commercialization Allergic Conjunctivitis Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  119. Slide 119: We Intend to Target Unmet Medical Needs in Anterior and Posterior Ocular Diseases

    We Intend to Target Unmet Medical Needs in Anterior and Posterior Ocular Diseases Anterior Opportunities ✓ Clear unmet and Posterior Opportunities underserved medical need High ✓ Novel treatment solutions High NAU ✓ Label expansion potential PVR ADX-2191 DED ADX-103 Unmet Medical Need Unmet Medical

  120. Slide 120: Ocular Disease Area Market Opportunities

    Ocular Disease Area Market Opportunities • Proliferative Vitreoretinopathy • Noninfectious Anterior Uveitis • Dry Eye Disease and • Pathway to Commercialization Allergic Conjunctivitis Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  121. Slide 121: PVR: A Rare Sight-Threatening Retinal Disease

    PVR: A Rare Sight-Threatening Retinal Disease PVR is the leading complication of 50/50 With no therapies available, PVR retinal detachment surgery and necessitates repeat surgery with a prevents successful reattachment repeat surgery failure rate of ~50% PVR is an serious condition leading to perman

  122. Slide 122: PVR: High Unmet Medical Need With No Approved Therapies

    PVR: High Unmet Medical Need With No Approved Therapies U.S. Estimates Primary Surgery Proliferative Vitreoretinopathy 10-50% failure rate • PVR typically manifests 1-2 months after primary Rhegmatogenous retinal detachment surgery PVR Retinal Detachment Repeat Surgery • PVR primary surgery failure

  123. Slide 123: ADX-2191: A Unique Approach and Novel Product Candidate for PVR

    ADX-2191: A Unique Approach and Novel Product Candidate for PVR PVR: A Sight-Threatening Disease A Unique Opportunity Left untreated, retinal detachment ADX-2191 due to PVR can progress to • A novel approach and potential therapeutic permanent blindness breakthrough in PVR treatment • Granted U.S. o

  124. Slide 124: Ocular Disease Area Market Opportunities

    Ocular Disease Area Market Opportunities • Proliferative Vitreoretinopathy • Noninfectious Anterior Uveitis • Dry Eye Disease and • Pathway to Commercialization Allergic Conjunctivitis Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  125. Slide 125: DED and AC: Persistently Disturbing and Overlapping Disease Burdens

    DED and AC: Persistently Disturbing and Overlapping Disease Burdens Dry Eye Disease DED+AC Comorbidity Allergic Conjunctivitis Up to 30 million of AC sufferers Studies have shown that DED 20 20 million or more adults in the U.S. suffer from DED and AC can be interrelated 30 in the U.S. do not respon

  126. Slide 126: DED and AC: Chronic Diseases With Inadequate Therapies

    DED and AC: Chronic Diseases With Inadequate Therapies Dry Eye Disease DED+AC Comorbidity Allergic Conjunctivitis Current Rx options may take DED, Differential diagnosis is Many AC patients make up to six weeks or longer to AC or difficult and treating both significant sacrifices due to achieve even

  127. Slide 127: DED and AC: Large Market Opportunities With Unmet Medical Needs

    DED and AC: Large Market Opportunities With Unmet Medical Needs U.S. Patient Estimates Dry Eye Disease Allergic Conjunctivitis • Significant negative quality of life Unsatisfied Up to With SOC • Complex, overlapping, and difficult to treat chronic conditions 20 50% 30 100 • Substantial unmet million

  128. Slide 128: Reproxalap: A Unique and Novel Product Candidate for DED and AC

    Reproxalap: A Unique and Novel Product Candidate for DED and AC Dry Eye Disease DED+AC Overlap Allergic Conjunctivitis Reproxalap in DED Reproxalap Reproxalap in AC Early and consistent symptom Observed improvements in Clinically significant and and sign improvements in both DED and AC Phase 2b dura

  129. Slide 129: Ocular Disease Area Market Opportunities

    Ocular Disease Area Market Opportunities • Proliferative Vitreoretinopathy • Noninfectious Anterior Uveitis • Dry Eye Disease and • Pathway to Commercialization Allergic Conjunctivitis Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  130. Slide 130: NAU: A Severe Ocular Inflammatory Disease

    NAU: A Severe Ocular Inflammatory Disease Disease Burden Overview Noninfectious anterior uveitis (NAU) NAU is the most common form of is a severe ocular inflammation uveitis with an estimated 260,000 causing pain, photophobia, and 260K U.S. patients per year vision loss annually ~50% of NAU patients

  131. Slide 131: NAU: Repeat Episodes and Steroid Toxicity Create Need for Novel Approaches

    NAU: Significant Repeat Episodes and Steroid Toxicity Creates the Need for Novel Approaches U.S. Estimates NAU episode frequency: Prevalence: Approximately 260,000 noninfectious anterior uveitis (NAU) patients in the U.S. ~50% ~25% ~25% Acute Recurrent Chronic Single flare Relapse 3-12 months Relaps

  132. Slide 132: Reproxalap: A Unique and Novel Product Candidate for NAU

    Reproxalap: A Unique and Novel Product Candidate for NAU NAU: A Serious Inflammatory Disease A Unique Opportunity With Inadequate Current Therapy ~50% of noninfectious anterior uveitis Reproxalap (NAU) patients have recurrent or chronic conditions requiring multiple • A novel and differentiated appr

  133. Slide 133: Ocular Disease Area Market Opportunities

    Ocular Disease Area Market Opportunities • Proliferative Vitreoretinopathy • Noninfectious Anterior Uveitis • Dry Eye Disease and • Pathway to Commercialization Allergic Conjunctivitis Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  134. Slide 134: We Intend to Commercialize Directly and Through Partnerships

    We Intend to Commercialize Directly and Through Partnerships Late Stage Programs Estimated U.S. Healthcare Competitive Value Infrastructure Commercial Planning Ocular Diseases U.S. Population* Providers Proposition Requirement ✓ Launch readiness Potential benefits ✓ Maximize value Dry Eye Disease 20

  135. Slide 135: Conclusion

    Conclusion Nasdaq: ALDX ©Aldeyra Therapeutics, Inc. 2019

  136. Slide 136: Expected Development Milestones: Novel Approaches to Address Immune-Mediated Disease

    Expected Development Milestones: Novel Approaches to Address Immune-Mediated Disease Ocular Diseases: Anticipated Milestones* Systemic Diseases: Anticipated Milestones* Reproxalap allergic conjunctivitis ALLEVIATE Reproxalap Sjögren-Larsson Syndrome RESET Phase 3 trial results early 2019 Phase 3 - P

Aldeyra Therapeutics — Investor Day (February 2019) on 6ix