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Kymera Investor Presentation Deck

● ● ● KT-474 Showed Meaningful Signs of Clinical Activity in HS, Comparing Favorably to Placebo Benchmarks and SOC AN Count reductions most profound in moderate and severe patients Highly competitive HISCR response rates continued to improve after cessation of dosing Pain and pruritus response rates and reductions significantly higher than placebo and SOC benchmarks Physician Global Assessment (PGA) scores improved in 5 of 12 patients, including 1 moderate disease patient with full disease clearance, and stable in the others ΔΑΝ Count AN Count 0/1/2 HISCR50 HISCR75 Pain NRS30 Responder KT-474 Part C (All/Moderate to Severe) Day 28 Day 42 -46% / -51% -32% / -50% 42% / 50% 25% / 30% 8% / 10% 50% / 60% 33% / 40% 42% / 50% 25% / 30% 50% / 60% The Adalimumab clinical trial was conducted by other parties in a similar patient population with different enrollment criteria from Part 1C of our Phase 1 clinical trial evaluating KT-474. Results do not reflect a head-to-head trial and are shown for illustrative purposes only KYMERA Ⓒ2023 KYMERA THERAPEUTICS, INC. Placebo Benchmarks Week 4 -15%¹ 24 to 26%³ 19 to 30% 3,4 5%4 18 to 23% 3,5 Adalimumab Phase 2 and 3 Week 4 -31%¹ 28 to 47%2,3 29 to 51% 3,4 20%4 39 to 58%2,3,5 ¹Kimball AB, et al. Ann Intern Med 2012;157:846-55; 2Morita A, et al. J Dermatol 2021;48:3-13; 3Kimball AB, et al. NEJM 2016;375:422-434;4Glatt S et al. JAMA Dermatol 2021;157:1279-88; 5Scheinfeld, et al. Derm Online J 2016:22 PAGE 30
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