Genprex Adds Clinical Trial Site for Acclaim-1 and Acclaim-3 Lung Cancer Clinical Trials

Rhea-AI Summary

Genprex (NASDAQ: GNPX) announced on November 19, 2025 that it added Gabrail Cancer Center in Canton, Ohio as a new clinical trial site for its Acclaim-1 and Acclaim-3 studies of Reqorsa gene therapy (quaratusugene ozeplasmid) in lung cancer.

The company noted the Acclaim trials are supported by FDA Fast Track designation and said it expects to add additional sites over the coming months to expand patient access and expedite enrollment.

Positive

• Added Gabrail Cancer Center in Canton, Ohio as an Acclaim-1/Acclaim-3 site
• Acclaim studies are supported by FDA Fast Track designation
• Company expects to open additional sites over the coming months to expedite enrollment

Negative

• None.

New Clinical Trial Site Added for Clinical Studies of Reqorsa® Gene Therapy to Treat Lung Cancer

Acclaim-1 and Acclaim-3 Clinical Trials Supported by FDA Fast Track Designation

AUSTIN, Texas, Nov. 19, 2025 /PRNewswire/ -- Genprex, Inc. ("Genprex" or the "Company") (NASDAQ: GNPX), a clinical-stage gene therapy company focused on developing life-changing therapies for patients with cancer and diabetes, today announced the Company has added Gabrail Cancer Center in Canton, Ohio, as a new clinical trial site for the Acclaim-1 and Acclaim-3 clinical trials studying its lead drug candidate, Reqorsa® Gene Therapy (quaratusugene ozeplasmid), in lung cancer. In addition, the Company expects to add and open additional clinical trial sites for its Acclaim clinical trials over the coming months in an effort to expand its reach to additional patients and expedite enrollment.

"We are pleased to collaborate with Gabrail Cancer Center, an established patient-focused cancer treatment center, in order to expand the number of trial sites available and to provide access to a greater number of patients who may be able to participate in our lung cancer trials," said Ryan Confer, President and Chief Executive Officer at Genprex. "We believe this partnership may accelerate patient enrollment, allowing more patients to receive our innovative gene therapy treatment and for Genprex to more expeditiously advance our clinical trials."

About Acclaim-1
Acclaim-1 is a Phase 1/2 clinical trial evaluating the combination of REQORSA and AstraZeneca's Tagrisso® (osimertinib) to treat patients with late-stage non-small cell lung cancer (NSCLC) who have activating EGFR mutations and disease progression after treatment with Tagrisso.

The Phase 2a expansion study follows the successful completion of the Phase 1 dose escalation portion of the study, which showed REQORSA was generally well tolerated with no dose limiting toxicities despite doubling the starting dose. Importantly, the results showed early signs of efficacy with some patients experiencing prolonged progression free survival and one patient having a partial response.

The Phase 2a expansion portion of the trial is expected to enroll approximately 33 patients who have previously received Tagrisso treatment and will determine the safety profile and evaluate efficacy, as well as several other exploratory endpoints. Genprex's team plans to conduct an interim analysis following the treatment of 19 patients, which the Company currently expects to complete enrollment of the first 19 patients in the first half of 2026. The Acclaim-1 clinical trial has received U.S. Food and Drug Administration (FDA) Fast Track Designation.

About Acclaim-3
Acclaim-3 is a Phase 1/2 clinical trial evaluating the combination of REQORSA and Genentech's Tecentriq® (atezolizumab) as maintenance therapy in patients with extensive stage small cell lung cancer (ES-SCLC) who are candidates for maintenance therapy after receiving Tecentriq and chemotherapy as standard of care initial treatment. In this study, patients will be treated with REQORSA and Tecentriq until disease progression or unacceptable toxicity is experienced.

The Phase 2 expansion study follows the successful completion of the Phase 1 dose escalation portion of the study, which showed REQORSA was generally well tolerated. There were no dose limiting toxicities, and in Acclaim-3, the Phase 2 patients are receiving the same dose of REQORSA as patients in the Phase 2 portion of Acclaim-1.

The Phase 2 expansion portion is expected to enroll approximately 50 patients. The primary endpoint of the Phase 2 portion is to determine the 18-week progression-free survival rate from the time of the start of maintenance therapy with REQORSA and Tecentriq in patients with ES-SCLC. Patients will also be followed for survival. Genprex's team plans to conduct an interim analysis after the 25th patient enrolled and treated reaches 18 weeks of follow up. The Company expects to complete enrollment of the first 25 patients for interim analysis in the Phase 2 expansion portion of the study in the first half of 2026. The Acclaim-3 clinical trial is supported by FDA Fast Track Designation and Orphan Drug Designation.

About Genprex, Inc.
Genprex, Inc. is a clinical-stage gene therapy company focused on developing life-changing therapies for patients with cancer and diabetes. Genprex's technologies are designed to administer disease-fighting genes to provide new therapies for large patient populations with cancer and diabetes who currently have limited treatment options. Genprex works with world-class institutions and collaborators to develop drug candidates to further its pipeline of gene therapies in order to provide novel treatment approaches. Genprex's oncology program utilizes its systemic, non-viral Oncoprex® Delivery System which encapsulates the gene-expressing plasmids using lipid-based nanoparticles in a lipoplex form. The resultant product is administered intravenously, where it is taken up by tumor cells that then express tumor suppressor proteins that were deficient in the tumor. The Company's lead product candidate, Reqorsa® Gene Therapy (quaratusugene ozeplasmid), is being evaluated in two clinical trials as a treatment for NSCLC and SCLC. Each of Genprex's lung cancer clinical programs has received a Fast Track Designation from the FDA for the treatment of that patient population, and Genprex's SCLC program has received an FDA Orphan Drug Designation. Genprex's diabetes gene therapy approach is comprised of a novel infusion process that uses an AAV vector to deliver Pdx1 and MafA genes directly to the pancreas. In models of Type 1 diabetes, GPX-002 transforms alpha cells in the pancreas into functional beta-like cells, which can produce insulin but may be distinct enough from beta cells to evade the body's immune system. In a similar approach for Type 2 diabetes, where autoimmunity is not at play, GPX-002 is believed to rejuvenate and replenish exhausted beta cells.

Interested investors and shareholders are encouraged to sign up for press releases and industry updates by visiting the Company Website, registering for Email Alerts and by following Genprex on Twitter, Facebook and LinkedIn.

Cautionary Language Concerning Forward-Looking Statements
Statements contained in this press release regarding matters that are not historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are made on the basis of the current beliefs, expectations and assumptions of management, are not guarantees of performance and are subject to significant risks and uncertainty. These forward-looking statements should, therefore, be considered in light of various important factors, including those set forth in Genprex's reports that it files from time to time with the Securities and Exchange Commission and which you should review, including those statements under "Item 1A – Risk Factors" in Genprex's Annual Report on Form 10-K for the year ended December 31, 2024.

Because forward-looking statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements regarding: Genprex's ability to advance the clinical development, manufacturing and commercialization of its product candidates in accordance with projected timelines and specifications, including the adding and opening of additional clinical trial sites for its Acclaim clinical trials; the timing and success of Genprex's clinical trials, its intended regulatory submissions and any resulting regulatory approvals; the effect of Genprex's product candidates, alone and in combination with other therapies, on cancer and diabetes; Genprex's future growth and financial status, including Genprex's ability to maintain compliance with the continued listing requirements of The Nasdaq Capital Market and to continue as a going concern and to obtain capital to meet its long-term liquidity needs on acceptable terms, or at all; Genprex's commercial and strategic partnerships, including those with its third party vendors, suppliers and manufacturers and their ability to successfully perform and scale up the manufacture of its product candidates; Genprex's intellectual property and licenses; and Genprex's current expectations, estimates, forecasts and projections about the industry and markets in which it operates.

These forward-looking statements should not be relied upon as predictions of future events and Genprex cannot assure you that the events or circumstances discussed or reflected in these statements will be achieved or will occur. If such forward-looking statements prove to be inaccurate, the inaccuracy may be material. You should not regard these statements as a representation or warranty by Genprex or any other person that Genprex will achieve its objectives and plans in any specified timeframe, or at all. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. Genprex disclaims any obligation to publicly update or release any revisions to these forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this press release or to reflect the occurrence of unanticipated events, except as required by law.

Genprex, Inc.
(877) 774-GNPX (4679)

GNPX Investor Relations
investors@genprex.com

GNPX Media Contact
Kalyn Dabbs
media@genprex.com

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SOURCE Genprex, Inc.

FAQ

What did Genprex announce about Acclaim-1 and Acclaim-3 on November 19, 2025?

Genprex added Gabrail Cancer Center in Canton, Ohio as a new site and said it expects to open additional sites in the coming months.

How does the new Gabrail Cancer Center site affect Genprex (GNPX) clinical enrollment?

Genprex said the new site will expand patient access and may accelerate enrollment for the Acclaim trials.

Which drug is being studied at the new Genprex site for lung cancer?

The trials study Reqorsa gene therapy (quaratusugene ozeplasmid) in lung cancer patients.

Are Genprex's Acclaim trials supported by any FDA designation?

Yes, the Acclaim-1 and Acclaim-3 clinical trials are supported by a FDA Fast Track designation.

Where is the new Genprex clinical trial site located for Acclaim-1 and Acclaim-3?

The new site is Gabrail Cancer Center in Canton, Ohio.