• The proof-of-concept open-label study evaluated the safety and tolerability, function of regulatory T cells (Tregs), biomarkers, and preliminary efficacy (as measured by the ALSFRS-R scale) of COYA 302 over 48 weeks and was conducted in four ALS patients at the Houston Methodist Hospital by Dr. Stanley Appel and Dr. Jason Thonhoff.
• Study data showed no decline or minimal decline at 24 and 48 weeks, respectively, after initiation of treatment in a group of patients experiencing a mean decline of -1.1 points/month in their ALSFRS-R score prior to initiation of treatment with COYA 302. The mean (±SD) ALSFRS-R scores at week 24 (33.75 ±3.3) and week 48 (32 ±7.8) after initiation of treatment were not statistically different compared to the ALSFRS-R score at baseline (33.5 ±5.9), indicating significant amelioration in the progression of the disease.
• COYA 302 is an investigational combination biologic for subcutaneous administration, comprised of COYA 301 (low dose IL-2) and CTLA4-Ig fusion protein. COYA 302 has a dual mechanism of action and is intended to enhance Treg function in vivo, and downregulate the function of T effector cells, proinflammatory cells, and lipid peroxides.
• Over the course of treatment, COYA 302 significantly enhanced Treg suppressive function at 24 weeks and 48 weeks and lowered serum biomarkers of inflammation and oxidative stress.
• COYA 302 appeared to be well tolerated in all study patients.

Coya Therapeutics, Inc. (NASDAQ: COYA) (“Coya” or the “Company”), a clinical-stage biotechnology company developing multiple therapeutic platforms intended to enhance Treg function, including biologics and cell therapies, today announced it will host a conference call to present positive clinical data announced earlier today, of Coya’s proprietary investigational biologic combination, COYA 302, in patients with Amyotrophic Lateral Sclerosis (ALS), today at 8:00am ET.

During the call, Dr. Stanley Appel, the chair of Coya’s Scientific Advisory Board, will provide commentary on the data summarizing work conducted at his lab at Houston Methodist Hospital. Following Dr. Appel's comment's, Dr. Howard Berman, Coya's CEO, and Dr. Adrian Hepner, Coya's CMO, will provide additional comments on the impact of this data on Coya's clinical pipeline and upcoming clinical and regulatory milestones.

Conference Call Information

Date: Tuesday, March 21, 2023

Time: 8:00 AM Eastern Time

Toll Free: 888-506-0062

International: 973-528-0011

Participant Access Code: 666962

Live Webcast link: https://www.webcaster4.com/Webcast/Page/2956/47797

Replay Information

Toll Free: 877-481-4010

International: 919-882-2331

Replay Passcode: 47797

Webcast replay link: https://www.webcaster4.com/Webcast/Page/2956/47797

About Coya Therapeutics, Inc.

Headquartered in Houston, TX, Coya Therapeutics, Inc. (Nasdaq: COYA) is a clinical-stage biotechnology company developing proprietary treatments focused on the biology and potential therapeutic advantages of regulatory T cells (“Tregs”) to target systemic inflammation and neuroinflammation. Dysfunctional Tregs underlie numerous conditions including neurodegenerative, metabolic, and autoimmune diseases, and this cellular dysfunction may lead to a sustained inflammation and oxidative stress resulting in lack of homeostasis of the immune system. Coya’s investigational product candidate pipeline leverages multiple therapeutic modalities aimed at restoring the anti-inflammatory and immunomodulatory functions of Tregs. Coya’s therapeutic platforms include Treg-enhancing biologics, Treg-derived exosomes, and autologous Treg cell therapy. Coya’s 300 Series product candidates, COYA 301 and COYA 302, are biologic therapies intended to enhance Treg function and expand Treg numbers. COYA 301 is a cytokine biologic for subcutaneous administration intended to enhance Treg function and expand Treg numbers in vivo, and COYA 302 is a biologic combination for subcutaneous and/or intravenous administration intended to enhance Treg function while depleting T effector function and activated macrophages. These two mechanisms may be additive or synergistic in suppressing inflammation. For more information about Coya, please visit www.coyatherapeutics.com.

About Muscle Dystrophy Association

Muscular Dystrophy Association (MDA) is the #1 voluntary health organization in the United States for people living with muscular dystrophy, ALS, and related neuromuscular diseases. For over 70 years, MDA has led the way in accelerating research, advancing care, and advocating for the support of our families. MDA's mission is to empower the people we serve to live longer, more independent lives. To learn more visit mda.org and follow MDA on Instagram, Facebook, Twitter, TikTok, LinkedIn, and YouTube.

Forward-Looking Statements

This press release contains “forward-looking” statements that are based on our management’s beliefs and assumptions and on information currently available to management. Forward-looking statements include all statements other than statements of historical fact contained in this presentation, including information concerning our current and future financial performance, business plans and objectives, current and future clinical and preclinical development activities, timing and success of our ongoing and planned clinical trials and related data, the timing of announcements, updates and results of our clinical trials and related data, our ability to obtain and maintain regulatory approval, the potential therapeutic benefits and economic value of our product candidates, competitive position, industry environment and potential market opportunities. The words “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” and similar expressions are intended to identify forward-looking statements.

Forward-looking statements are subject to known and unknown risks, uncertainties, assumptions and other factors including, but not limited to, those related to risks associated with the impact of COVID-19; the success, cost and timing of our product candidate development activities and ongoing and planned clinical trials; our plans to develop and commercialize targeted therapeutics; the progress of patient enrollment and dosing in our preclinical or clinical trials; the ability of our product candidates to achieve applicable endpoints in the clinical trials; the safety profile of our product candidates; the potential for data from our clinical trials to support a marketing application, as well as the timing of these events; our ability to obtain funding for our operations; development and commercialization of our product candidates; the timing of and our ability to obtain and maintain regulatory approvals; the rate and degree of market acceptance and clinical utility of our product candidates; the size and growth potential of the markets for our product candidates, and our ability to serve those markets; our commercialization, marketing and manufacturing capabilities and strategy; future agreements with third parties in connection with the commercialization of our product candidates; our expectations regarding our ability to obtain and maintain intellectual property protection; our dependence on third party manufacturers; the success of competing therapies or products that are or may become available; our ability to attract and retain key scientific or management personnel; our ability to identify additional product candidates with significant commercial potential consistent with our commercial objectives; and our estimates regarding expenses, future revenue, capital requirements and needs for additional financing.

We have based these forward-looking statements largely on our current expectations and projections about future events and trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives, and financial needs. Moreover, we operate in a very competitive and rapidly changing environment, and new risks may emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed herein may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements. Although our management believes that the expectations reflected in our forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance or events and circumstances described in the forward-looking statements will be achieved or occur. We undertake no obligation to publicly update any forward-looking statements, whether written or oral, that may be made from time to time, whether as a result of new information, future developments or otherwise.

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