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Cytokinetics Announces Three Late-Breaking Science Abstracts at the European Society of Cardiology (ESC) Congress 2026

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Cytokinetics (Nasdaq:CYTK) will present three Late-Breaking Science abstracts at the ESC Congress 2026 in Munich from August 28-31, 2026, including a Hot Line presentation of primary Phase 3 ACACIA-HCM results for aficamten in non-obstructive hypertrophic cardiomyopathy.

The company will also host an in-person and virtual investor event at ESC to discuss these data, with detailed logistics to be announced later.

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Negative

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News Market Reaction – CYTK

-0.01%
-0.01% Session close to close

In the Jul 7 session, CYTK declined 0.01%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

The spotlight on ACACIA-HCM as Late-Breaking Science at ESC 2026 underscores aficamten’s importance ...
Analysis

The spotlight on ACACIA-HCM as Late-Breaking Science at ESC 2026 underscores aficamten’s importance beyond obstructive disease. With prior news often followed by uneven trading and notable short interest, investors may watch closely how full Phase 3 data compare with earlier topline results.

Key Figures

ESC Congress dates: August 28-31, 2026 Phase: Phase 3 Session time: 11:00 AM-12:15 PM CEST +5 more
8 metrics
ESC Congress dates August 28-31, 2026 European Society of Cardiology Congress in Munich
Phase Phase 3 ACACIA-HCM pivotal trial of aficamten
Session time 11:00 AM-12:15 PM CEST Hot Line 1 session including ACACIA-HCM primary results
Presentation time 11:45-11:55 AM CEST ACACIA-HCM Hot Line presentation slot
Session time 4:15-5:15 PM CEST Late-Breaking Clinical Science: Hypertrophic Cardiomyopathy session
Presentation time 4:15-4:30 PM CEST Effect of aficamten on cardiac structure and function presentation
Presentation time 4:30-4:45 PM CEST Aficamten vs. metoprolol monotherapy in obstructive HCM presentation
Pre-headline price vs 52-week high -3.1% CYTK share price relative to 52-week high before ESC abstracts news

Historical Context

5 past events · Latest: Jun 17 (Neutral)
Pattern 5 events
Date Event Sentiment 24h Move Catalyst
Jun 17 Inducement grants Neutral +0.1% Equity awards to new hires under Nasdaq inducement grant listing rule.
Jun 08 Corporate giving Positive -2.7% Launch of annual giving program offering grants to qualifying non-profits.
Jun 01 EU product launch Positive -4.0% Commercial launch of MYQORZO in Germany following EU approval.
May 27 Investor conferences Neutral -0.4% Participation in June healthcare investor conferences with webcast access.
May 20 Annual meeting notice Neutral -0.9% Scheduling of annual stockholder meeting and voting arrangements.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent news, including a major EU launch and corporate updates, has often been followed by modest share price declines, indicating a tendency for reactions to diverge from the generally constructive tone of announcements.

Key Terms

phase 3, non-obstructive hypertrophic cardiomyopathy, obstructive hypertrophic cardiomyopathy, metoprolol monotherapy, +1 more
5 terms
phase 3 clinical
"the pivotal Phase 3 clinical trial of aficamten in patients"
Phase 3 is the late-stage clinical testing step for a new drug or medical treatment, where the product is given to large groups of patients to confirm effectiveness, monitor side effects, and compare it to standard care. Successful Phase 3 results are often the final scientific hurdle before regulators decide on approval and market launch—like passing a final exam before graduation—and can sharply change a company's valuation and future revenue prospects.
non-obstructive hypertrophic cardiomyopathy medical
"aficamten in patients with non-obstructive hypertrophic cardiomyopathy"
A form of heart disease where the heart muscle becomes abnormally thick and stiff but does not create a physical blockage that impedes blood exiting the heart. Think of a pump whose walls have thickened so it works less flexibly even though the doorway is clear. It matters to investors because it influences demand for treatments, clinical trial outcomes, healthcare costs, insurance risk, and workforce productivity, all of which can affect companies in medical, pharmaceutical, and insurance sectors.
obstructive hypertrophic cardiomyopathy medical
"monotherapy in Obstructive Hypertrophic Cardiomyopathy According to"
A heart condition where the muscle of the left ventricle becomes abnormally thick and narrows the pathway blood must flow through, like a pump whose outlet has been partly blocked by swollen walls. It matters to investors because it drives demand for ongoing medical care, devices and drugs, can lead to sudden, costly hospital interventions, and influences the size and urgency of markets for treatments and clinical trials.
metoprolol monotherapy medical
"Aficamten vs. Metoprolol Monotherapy in Obstructive Hypertrophic"
Metoprolol monotherapy is treatment using only metoprolol, a commonly prescribed beta‑blocker that slows heart rate and lowers blood pressure, rather than combining it with other drugs. Think of it like using a single tool from a toolbox to address a medical problem; whether the single drug works affects prescription patterns, clinical trial outcomes, regulatory labeling, and the size of the market for that drug versus combination therapies, which is why it matters to investors.
late breaking science clinical
"three Late Breaking Science abstracts were accepted for presentation"
Research or data that is announced or presented outside the normal schedule because it is considered unusually timely or important, often at medical or scientific conferences or in press releases. Like a late-breaking news bulletin, it highlights new results that could change understanding or expectations quickly; for investors it signals information that may alter market views about a company, therapy, or product, but the findings are often preliminary and may be subject to further review.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Hot Line Presentation of Primary Results from ACACIA-HCM to Elaborate on Positive Topline Results in Patients with Non-Obstructive Hypertrophic Cardiomyopathy

Company to Host In-Person and Virtual Investor Event to Discuss Results from Late-Breaking Science Presentations

SOUTH SAN FRANCISCO, Calif., July 07, 2026 (GLOBE NEWSWIRE) -- Cytokinetics, Incorporated (Nasdaq: CYTK) today announced three Late Breaking Science abstracts were accepted for presentation at the European Society of Cardiology (ESC) Congress, taking place August 28-31 in Munich, Germany, including a Hot Line presentation of the primary results from ACACIA-HCM, the pivotal Phase 3 clinical trial of aficamten in patients with non-obstructive hypertrophic cardiomyopathy (HCM).

Hot Line and Late-Breaking Science Presentations

Title: ACACIA-HCM: Aficamten for Symptomatic Nonobstructive Hypertrophic Cardiomyopathy
Presenter: Ahmad Masri, M.D., M.S., Associate Professor of Medicine, Director of the Hypertrophic Cardiomyopathy Center at Oregon Health & Science University
Date: Friday, August 28, 2026
Session Title: Hot Line 1
Session Time: 11:00 AM – 12:15 PM CEST
Presentation Time: 11:45 – 11:55 AM CEST
Location: Munich, Main Auditorium (Hall B3)

Title: Effect of Aficamten on Cardiac Structure and Function in Patients with Symptomatic Nonobstructive Hypertrophic Cardiomyopathy - Results from the ACACIA-HCM Trial
Presenter: Sheila Hegde, M.D., MPH, Assistant Professor, University of Texas Southwestern Medical Center – Dallas, TX and Affiliate Faculty, Brigham and Women’s Hospital, Boston, MA
Date: Saturday, August 29, 2026
Session Title: Late-Breaking Clinical Science: Hypertrophic Cardiomyopathy
Session Time: 4:15 – 5:15 PM CEST
Presentation Time: 4:15 – 4:30 PM CEST
Location: Achgabat (Hall A3)

Title: Aficamten vs. Metoprolol Monotherapy in Obstructive Hypertrophic Cardiomyopathy According to Pre-Trial Treatment in MAPLE-HCM
Presenter: Fernando Dominguez, M.D., Ph.D., Consultant Cardiologist, Hospital Universitario Puerta De Hierro Majadahonda – Madrid, Spain
Date: Saturday, August 29, 2026
Session Title: Late-Breaking Clinical Science: Hypertrophic Cardiomyopathy
Session Time: 4:15 – 5:15 PM CEST
Presentation Time: 4:30 – 4:45 PM CEST
Location: Achgabat (Hall A3)

Investor Event and Webcast

Cytokinetics will host an in-person and virtual investor event onsite at ESC to discuss results from the Late-Breaking Science presentations at the Congress. Additional details including the date, time and registration information will be announced at a later date.

About Cytokinetics

Cytokinetics is a specialty cardiovascular biopharmaceutical company, building on its over 25 years of pioneering scientific innovations in muscle biology, and advancing a pipeline of potential new medicines for patients suffering from diseases of cardiac muscle dysfunction. Cytokinetics’ MYQORZO® (aficamten) is a cardiac myosin inhibitor approved in the U.S., Europe and China for the treatment of adults with symptomatic obstructive hypertrophic cardiomyopathy (oHCM). Following positive topline results in ACACIA-HCM, a Phase 3 clinical trial of aficamten in patients with non-obstructive HCM (nHCM), the company plans to discuss the results with the U.S. FDA and other regulatory authorities. Cytokinetics is also developing omecamtiv mecarbil, an investigational cardiac myosin activator for the potential treatment of patients with heart failure with severely reduced ejection fraction and ulacamten, an investigational cardiac myosin inhibitor for the potential treatment of heart failure with preserved ejection fraction, while continuing pre-clinical research and development in muscle biology.

For additional information about Cytokinetics, visit www.cytokinetics.com and follow us on X, LinkedIn, Facebook and YouTube.

Forward-Looking Statements

This press release contains forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995 (the “Act”). Cytokinetics disclaims any intent or obligation to update these forward-looking statements and claims the protection of the Act’s Safe Harbor for forward-looking statements. Examples of such statements include, but are not limited to, statements relating to the enrollment, expected results or timing of completion of any of our clinical trials, the clinical meaningfulness, persuasiveness or interpretation of clinical trial results, including for purposes of regulatory approval, labeling, or market acceptance, the results of long-term, secondary or exploratory analyses, including analyses of time to first cardiovascular event, statements relating to our ability to obtain regulatory approval for aficamten in nonobstructive hypertrophic cardiomyopathy in any jurisdiction by any particular date, if ever, the number of patients comprising the eligible treatment population for aficamten, or market acceptance of aficamten for the treatment of nonobstructive hypertrophic cardiomyopathy. Such statements are based on management’s current expectations, but actual results may differ materially due to various risks and uncertainties, including, but not limited to, potential difficulties or delays in the development, testing, regulatory approvals for trial commencement, progression or product sale or manufacturing of Cytokinetics’ drug candidates that could slow or prevent clinical development or product approval; Cytokinetics’ drug candidates may have adverse side effects or inadequate therapeutic efficacy; the FDA or foreign regulatory agencies may delay or limit Cytokinetics’ ability to conduct clinical trials; Cytokinetics may be unable to obtain or maintain patent or trade secret protection for its intellectual property; standards of care may change, rendering Cytokinetics’ drug candidates obsolete; and competitive products or alternative therapies may be developed by others for the treatment of indications Cytokinetics’ drug candidates and potential drug candidates may target. For further information regarding these and other risks related to Cytokinetics’ business, investors should consult Cytokinetics’ filings with the Securities and Exchange Commission including the risk factors included in Cytokinetics’ most recent Annual Report on Form 10-K and subsequent reports filed with the SEC.

CYTOKINETICS® and the CYTOKINETICS C-shaped logo are registered trademarks of Cytokinetics in the U.S. and certain other countries.

MYQORZO® is a registered trademark of Cytokinetics in the U.S. and the European Union.

Contact:
Cytokinetics
Diane Weiser
Senior Vice President, Corporate Affairs
(415) 290-7757


FAQ

What is Cytokinetics (CYTK) presenting at ESC Congress 2026?

Cytokinetics is presenting three Late-Breaking Science abstracts at ESC Congress 2026, including primary Phase 3 ACACIA-HCM results for aficamten. According to Cytokinetics, these sessions focus on non-obstructive and obstructive hypertrophic cardiomyopathy and comparative treatment data.

When is the ACACIA-HCM aficamten Hot Line presentation for CYTK at ESC 2026?

The ACACIA-HCM Hot Line presentation is scheduled for Friday, August 28, 2026, from 11:45 to 11:55 AM CEST. According to Cytokinetics, it will occur in the Main Auditorium (Hall B3) during the Hot Line 1 session from 11:00 AM to 12:15 PM.

Which CYTK aficamten structural and functional results will be shared at ESC Congress 2026?

Cytokinetics will present "Effect of Aficamten on Cardiac Structure and Function" in symptomatic non-obstructive hypertrophic cardiomyopathy. According to Cytokinetics, this Late-Breaking Clinical Science session occurs Saturday, August 29, 2026, 4:15–4:30 PM CEST in Achgabat (Hall A3).

What is the MAPLE-HCM aficamten vs metoprolol presentation from Cytokinetics at ESC 2026?

Cytokinetics will present "Aficamten vs. Metoprolol Monotherapy in Obstructive Hypertrophic Cardiomyopathy" from MAPLE-HCM. According to Cytokinetics, this Late-Breaking Clinical Science talk is on Saturday, August 29, 2026, 4:30–4:45 PM CEST in Achgabat (Hall A3).

Will Cytokinetics (CYTK) host an investor event around ESC Congress 2026?

Cytokinetics plans an in-person and virtual investor event onsite at ESC 2026 to discuss Late-Breaking Science results. According to Cytokinetics, the specific date, time, and registration details will be provided at a later date.

How is aficamten being studied in the ACACIA-HCM Phase 3 trial reported by CYTK?

Aficamten is being evaluated in the pivotal Phase 3 ACACIA-HCM trial for symptomatic non-obstructive hypertrophic cardiomyopathy. According to Cytokinetics, primary results will be shared in an ESC 2026 Hot Line session, elaborating on previously announced positive topline findings.