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Presentations to cover updates across Eikon’s clinical pipeline including: 

• Updated data from TeLuRide-005, an ongoing open-label Phase 2 trial of EIK1001, a TLR7/8 dual-agonist, plus pembrolizumab and histology-appropriate chemotherapy in stage 4 non-small cell lung cancer (NSCLC)
• Updated cohort data from an ongoing Phase 1/2 study of EIK1003, a highly selective non-brain penetrant PARP1 inhibitor, as monotherapy and in combination with chemotherapy in advanced solid tumors
• Initial data from a Phase 1/2 study of EIK1003 in combination with the novel hormonal agent abiraterone in metastatic prostate cancer
• Initial results from an ongoing Phase 1/2 study of EIK1004, a highly selective CNS-penetrant PARP1 inhibitor in advanced solid malignancies
• Preliminary safety, tolerability and pharmacokinetic data for EIK1005, a Werner (WRN) helicase inhibitor

MILLBRAE, Calif., Oct. 18, 2026 (GLOBE NEWSWIRE) — Eikon Therapeutics, Inc. (Nasdaq: EIKN) (“Eikon”), a late-stage clinical biopharmaceutical company dedicated to developing innovative medicines to address serious unmet medical needs, today announced the publication of full-text abstracts from its four clinical candidates to be presented at the 2026 European Society for Medical Oncology (ESMO) Congress in Madrid, Spain beginning on October 23, 2026.

“We are looking forward to sharing updates from across our pipeline at ESMO, with seven abstracts highlighting both new clinical findings, and continued progress in our oncology programs,” said Roger M. Perlmutter, M.D., Ph.D., Chief Executive Officer and Board Chair of Eikon. “Eikon scientists and clinicians look forward to discussing these results with the broader oncology community in Spain.”

2026 ESMO Abstract Titles and Presentation Details:

EIK1001

Title:
2664P – TeLuRide-005: Phase 2 study of EIK1001 (TLR7/8 dual agonist) plus pembrolizumab and chemotherapy in patients with stage IV NSCLC: results from the squamous cohort and updated pooled results

Date: Monday, October 26, 2026

Time: 12:00 – 12:45

Title:
2724TiP – A Phase 2/3 Study of EIK1001 in Combination with Pembrolizumab and Chemotherapy in Participants with Stage 4 Non-Small Cell Lung Cancer (NSCLC) [TeLuRide-008]

Date: Monday, October 26, 2026

Time: 12:00 – 12:45

EIK1003

Title:
1048P – Phase 1/2 study of a PARP1-selective inhibitor, EIK1003, as monotherapy and in combination with paclitaxel (PTX) in advanced solid tumors

Date: Friday, October 23, 2026

Time: 15:15 – 16:00

Title:
1049P – Phase 1/2 study of a PARP1-selective inhibitor, EIK1003, in combination with abiraterone in patients with metastatic prostate cancer (mPC)

Date: Friday, October 23, 2026

Time: 15:15 – 16:00

EIK1004

Title:
1060P – A first-in-human Phase 1/2 study of EIK1004, a PARP1-selective CNS-penetrant inhibitor, in patients with advanced solid tumors with HRR mutations

Date: Friday, October 23, 2026

Time: 15:15 – 16:00

EIK1005

Title:
1143eTiP – Phase 1/2 Study of the Novel Werner Helicase Inhibitor EIK1005 as Monotherapy and in Combination with Pembrolizumab in Patients with Advanced Solid Tumors, Including MSI-H or dMMR Tumors

ePoster

Title:
1010P – Analysis of the Safety, Tolerability, and PK of EIK1005, a Novel WRN Inhibitor

Date: Friday, October 23, 2026

Time: 15:15 – 16:00

About Eikon Therapeutics

Eikon is a late-stage clinical biopharmaceutical company dedicated to building a global, fully-integrated organization developing innovative medicines to address serious unmet medical needs. Eikon’s initial focus is oncology, where it is advancing a pipeline of drug candidates targeting areas of high unmet need that could eventually become critical medicines for the treatment of various cancers. Eikon deploys its technology platform, including its proprietary single molecule tracking system, to develop internally-derived novel therapies, while also leveraging the deep expertise of its management team to in-license promising assets. Eikon’s vision is to become a generational leader, by purposefully integrating traditional biology research with advanced engineering to develop better medicines faster. For more information, visit www.eikontx.com.

Forward-Looking/Safe Harbor Statements

This press release contains forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. All statements in this press release that are not historical facts are hereby identified as forward-looking statements for this purpose. These statements may be identified by words such as “aims,” “anticipates,” “believes,” “could,” “estimates,” “expects,” “forecasts,” “goal,” “intends,” “may,” “plans,” “possible,” “potential,” “seeks,” “will” and variations of these words or similar expressions that are intended to identify forward-looking statements, although not all forward-looking statements contain these words. Forward-looking statements in this press release include, but are not limited to, statements regarding: the therapeutic potential, safety, and efficacy of Eikon’s product candidates; the timing for anticipated data readouts; expected milestones and business objectives for 2026 and beyond, including Eikon’s anticipated presentations at the 2026 ESMO Congress; and other statements regarding Eikon’s future operations, financial performance, financial position, prospects, objectives, strategies and other future events.

These forward-looking statements are based upon management’s current expectations and assumptions, and are subject to a number of risks, uncertainties and other factors that could cause actual results and events to differ materially and adversely from those indicated by such forward-looking statements including, among others: our limited operating history; our significant net losses incurred since inception and the likelihood of incurring additional losses for the foreseeable future; our need for substantial additional funding; the early stage of development of many of our product candidates and the possibility that our product candidates may fail in development; our dependence on the success of our current product candidates; our ability to leverage our technology platform to enable more informed drug research and development; legal and regulatory risks; intellectual property-related risks; and those risks, uncertainties and other factors discussed under the caption “Risk Factors” and elsewhere in Eikon’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2026, filed with the Securities and Exchange Commission (“SEC”) on August 13, 2026, and in other public filings with the SEC in the future.

As a result, you should not place undue reliance on any forward-looking statements. The forward-looking statements made in this press release speak only as of the date of this press release, and Eikon undertakes no obligation to update such forward-looking statements, whether as a result of new information, future developments or otherwise, except as required by law.

Contacts:

Investors

Alfred “Freddie” Bowie, Ph.D., CFO
[email protected]

Media

Colin Sanford
[email protected]

• Median overall survival of 15.8 months in Cyclin E1-positive platinum-resistant ovarian cancer patients treated with azenosertib monotherapy 
• Data to be presented as a rapid oral presentation at ESMO Congress 2026 on October 23, 2026

SAN DIEGO, Oct. 18, 2026 (GLOBE NEWSWIRE) — Zentalis^® Pharmaceuticals, Inc. (Nasdaq: ZNTL), a clinical oncology innovator advancing late-stage development of investigational first-in-class WEE1 inhibitor azenosertib as a biomarker-driven treatment approach for ovarian cancer, today announced that overall survival (OS) data from an interim analysis of the DENALI Part 1b study (GOG-3066) have been published in the abstract for the upcoming rapid oral presentation at the European Society for Medical Oncology (ESMO) Congress 2026.

The published abstract reports results for OS, a secondary endpoint of DENALI Part 1b in patients with platinum-resistant ovarian cancer (PROC), from an interim analysis. As of the September 2, 2025 data cutoff:

• In the Cyclin E1-positive subgroup (n=48): median OS of 15.8 months (95% CI, 8.7–17.8);
• In the Cyclin E1-negative subgroup (n=46): median OS of 7.5 months (95% CI, 5.8–12.3);
• No new safety signals were observed.

DENALI Part 1b enrolled 102 patients with PROC regardless of Cyclin E1 protein expression who had received between one and five prior lines of therapy, with prior bevacizumab required. The primary endpoint was objective response rate; secondary endpoints included duration of response, progression-free survival, OS and safety. Cyclin E1 status was retrospectively determined by immunohistochemistry using a proprietary cutoff, with 94 patients evaluable (Cyclin E1-positive: n=48; Cyclin E1-negative: n=46).

The abstract concludes that Cyclin E1 represents a highly selective and predictive biomarker for response to azenosertib, and that median OS with azenosertib compared favorably to historical single-agent chemotherapy benchmarks in patients with Cyclin E1-positive PROC, supporting further development of azenosertib in this biomarker-selected population in the ongoing DENALI Part 2 and ASPENOVA Phase 3 confirmatory trials.

The abstract is available on the ESMO Congress website and a rapid oral presentation is scheduled on October 23, 2026.

Presentation Details:

• Title: “Azenosertib in platinum-resistant ovarian cancer (PROC): overall survival analysis from Part 1b of the DENALI study (GOG-3066)”
• Session: Rapid Oral Presentation — Gynecological Cancers: Ovarian
• Date/Time: Friday, October 23, 2026, 4:15 p.m. – 5:45 p.m. CEST
• Presentation Number: 1242RO
• Location: ESMO Congress 2026, Madrid, Spain

About the DENALI Clinical Trial

DENALI is a multi-part Phase 2 registration-intended clinical trial (NCT05128825, GOG-3066) studying azenosertib in patients with PROC.

Part 1b enrolled 102 patients with PROC regardless of Cyclin E1 protein expression, all treated at 400 mg QD 5:2 (five days of once-daily administration of azenosertib, followed by two days without azenosertib). The primary endpoint was objective response rate per RECIST v1.1; secondary endpoints included duration of response, progression-free survival, overall survival, and safety.

Part 2 is prospectively enrolling PROC patients with Cyclin E1 protein overexpression based on Zentalis’ proprietary immunohistochemistry cutoff. Part 2, in total, is designed to support accelerated approval, pending positive study outcomes and further discussions with the FDA. The study design consists of the following parts:

• Part 2a: Dose confirmation evaluated two doses, 300 mg QD 5:2 and 400 mg QD 5:2, with approximately 30 patients enrolled per dose group. 400 mg QD 5:2 was selected as the optimal monotherapy dose. Recruitment at the 300 mg QD 5:2 dose level has been discontinued. All patients enrolled in Part 2a will contribute to the overall safety database submitted to the FDA.
• Part 2b: Enrollment expansion at the selected 400 mg QD 5:2 dose up to approximately 100 patients, including patients at this dose in Part 2a. Enrollment in this cohort is complete.
• Part 2c: Broadening of the study population, which is expected to include approximately 40 patients previously treated with a taxane-containing regimen for PROC. This cohort is currently enrolling.

For physician and patient information about the DENALI trial, please visit www.denalitrial.com.

About ASPENOVA Clinical Trial

ASPENOVA is a Phase 3 randomized, confirmatory clinical trial designed to support full approval of azenosertib in patients with Cyclin E1-positive PROC. The trial is expected to enroll approximately 420 patients and compare azenosertib monotherapy at 400mg QD 5:2 to investigator’s choice of standard-of-care single-agent chemotherapy (paclitaxel, pegylated liposomal doxorubicin [PLD], gemcitabine, or topotecan) in this biomarker-selected population. The primary endpoint is progression-free survival (PFS); key secondary endpoints include overall survival (OS) and overall response rate (ORR). The trial design was based on feedback from the U.S. FDA regarding requirements for seeking approval under the accelerated approval pathway and requirements to support potential conversion to full approval.

About Azenosertib

Azenosertib is an investigational, potentially first-in-class, selective, and orally bioavailable inhibitor of WEE1 currently being evaluated in clinical studies in ovarian cancer and additional tumor types. WEE1 acts as a master regulator of the G1-S and G2-M cell cycle checkpoints, through negative regulation of both CDK1 and CDK2, to prevent replication of cells with damaged DNA. By inhibiting WEE1, azenosertib enables cell cycle progression, despite high levels of DNA damage, thereby resulting in the accumulation of DNA damage and leading to mitotic catastrophe and cancer cell death.

Azenosertib is in late-stage development as a potential treatment for Cyclin E1-positive platinum-resistant ovarian cancer (PROC). There is currently no approved treatment option specifically for this biomarker-selected population which comprises approximately 50% of PROC patients. Cyclin E1 protein overexpression has been established as a sensitive and specific predictive biomarker for identifying patients who could potentially derive benefit from azenosertib treatment.

About Zentalis Pharmaceuticals

Zentalis is a clinical oncology innovator developing a treatment approach for ovarian cancer and multiple tumor types. Leveraging therapeutics development and biomarker expertise, Zentalis is advancing monotherapy and combination studies of its investigational first-in-class WEE1 inhibitor, azenosertib. Focused on translating WEE1 science into clinical practice, we aim to equip physicians with a targeted, non-chemo, orally available medicine that enhances treatment experience, choice, and outcomes. Our mission: to unburden cancer patients with more convenience and care.​

For more information, please visit www.zentalis.com. Follow Zentalis on LinkedIn at www.linkedin.com/company/zentalis-pharmaceuticals

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, as amended. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including, but not limited to, statements regarding the continued development of azenosertib; the clinical and therapeutic potential of azenosertib; the potential for azenosertib to be first-in-class; the broad franchise potential of azenosertib; the Company’s biomarker-driven strategy for azenosertib, including the ability of Cyclin E1 to be a highly selective and predictive biomarker for response to azenosertib; and our participation in conference presentations. The terms “anticipate,” “advance,” “believe,” “design,” “develop,” “expect,” “intent,” “look forward,” “on track,” “plan,” “position,” “potential,” “runway,” “strategy,” “support,” “target,” “upcoming,” and “will” and similar references are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to, the following: our limited operating history, which may make it difficult to evaluate our current business and predict our future success and viability; we have and expect to continue to incur significant losses; our need for additional funding, which may not be available; our substantial dependence on the success of azenosertib; our plans, including the costs thereof, of development of companion diagnostics; the outcome of preclinical testing and early trials may not be predictive of the success of later clinical trials; potential unforeseen events during clinical trials could cause delays or other adverse consequences; risks relating to the regulatory approval process or ongoing regulatory obligations; our product candidates may cause serious adverse side effects; inability to maintain our collaborations, or the failure of these collaborations; our reliance on third parties; effects of significant competition; the possibility of system failures or security breaches; risks relating to intellectual property; our ability to attract, retain and motivate qualified personnel, and risks relating to management transitions; significant costs as a result of operating as a public company; and the other important factors discussed under the caption “Risk Factors” in our most recently filed periodic report on Form 10-K or 10-Q and subsequent filings with the U.S. Securities and Exchange Commission (SEC) and our other filings with the SEC. Any such forward-looking statements represent management’s estimates as of the date of this press release. While we may elect to update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause our views to change.

ZENTALIS^® and its associated logo are trademarks of Zentalis and/or its affiliates. All website addresses and other links in this press release are for information only and are not intended to be an active link or to incorporate any website or other information into this press release. 

Contact: 
Aron Feingold
VP, Investor Relations & Corporate Communications
[email protected]