Abeona Therapeutics® Announces Activation of Children's Hospital of Philadelphia as a New Qualified Treatment Center for ZEVASKYN®

CLEVELAND, May 11, 2026 (GLOBE NEWSWIRE) -- Abeona Therapeutics Inc. (NASDAQ:ABEO), a commercial-stage biopharmaceutical company developing genetic medicines for serious diseases with high unmet need, today announced activation of the Children's Hospital of Philadelphia (CHOP) as the sixth Qualified Treatment Center (QTC) for the administration of ZEVASKYN (prademagene zamikeracel) gene-modified cellular sheets.

"Activation of CHOP is a significant step forward for the Recessive dystrophic epidermolysis bullosa (RDEB) community expanding access to ZEVASKYN in the east coast," said Dr. Madhav Vasanthavada, Chief Commercial Officer of Abeona. "We are excited to collaborate with Dr. Marissa J. Perman and her team, global leaders in pediatric care and pioneers in gene and cell therapy innovation, to enable more patients an opportunity to receive ZEVASKYN treatment."

"CHOP is proud to be named a treatment center for ZEVASKYN," said Marissa J. Perman, MD, Section Chief of Dermatology and Director of the Epidermolysis Bullosa Multidisciplinary Clinic at Children's Hospital of Philadelphia. "This designation underscores our dedication to delivering leading-edge care and expanding access to promising new therapies that have the potential to enhance quality of life for patients with RDEB and their families."

For more information about receiving ZEVASKYN treatment at CHOP, contact the Epidermolysis Bullosa Multidisciplinary Clinic at EBclinic@chop.edu or call 215-590-1930.

For more information on how to access ZEVASKYN and learn about patient support services offered through Abeona Assist^®, Abeona's comprehensive patient support program, visit www.abeonaassist.com, call 1-855-ABEONA-1 (1-855-223-6621) or email MyNavigator@AbeonaAssist.com. Abeona Assist offers personalized support, including helping eligible patients understand their insurance benefits and financial assistance options, and providing travel and logistical assistance.

Marissa J. Perman, MD, has been a paid consultant to Abeona Therapeutics.

About recessive dystrophic epidermolysis bullosa

Recessive dystrophic epidermolysis bullosa (RDEB), a rare blistering disorder without a cure, is characterized by severe skin wounds that cause pain and can lead to systemic complications impacting the length and quality of life. People with RDEB have a defect in both copies of the COL7A1 gene, leaving them unable to produce functioning type VII collagen, which is necessary to anchor the dermal and epidermal layers of the skin.

About ZEVASKYN^® (prademagene zamikeracel) gene-modified cellular sheets

ZEVASKYN is the first and only autologous cell sheet-based gene therapy for the treatment of wounds in adult and pediatric patients with recessive dystrophic epidermolysis bullosa (RDEB). RDEB is a severe skin disease caused by a defect in both copies of the COL7A1 gene resulting in the inability to produce functional type VII collagen. Without functional type VII collagen and anchoring fibrils, the skin is fragile and blisters easily, leading to wounds that continually open and close, or fail to heal altogether. Patients often have large open wounds that can lead to serious life-threatening complications. ZEVASKYN incorporates the functional type VII collagen-producing COL7A1 gene into a patient's own skin cells, ex vivo, using a replication-incompetent retroviral vector to produce functional type VII collagen in treated wounds. ZEVASKYN has demonstrated clinically meaningful wound healing and pain reduction with a single surgical application. For more information, visit www.ZEVASKYN.com.

Indication

ZEVASKYN^® (prademagene zamikeracel) is an autologous cell sheet-based gene therapy indicated for the treatment of wounds in adult and pediatric patients with recessive dystrophic epidermolysis bullosa (RDEB).

Important Safety Information

• Serious allergic reactions to ZEVASKYN can occur. Patients should get medical help right away if they experience symptoms like itching, swelling, hives, difficulty breathing, runny nose, watery eyes, or nausea. In rare cases, a severe reaction called anaphylaxis may happen.
• There is a potential risk that treatment with ZEVASKYN may contribute to the development of cancer because of how the therapy works. Patients should be monitored for the rest of their lives to check for any signs of cancer.
• ZEVASKYN is made using human and animal materials. Although these materials are tested before use, the risk of passing on infections cannot be eliminated.
• The most common side effects are pain from the procedure and itching.

This is not a complete list of side effects. Patients should call their care team for medical advice about side effects. Side effects may be reported to Abeona at 1-844-888-2236 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

See full Prescribing Information.

About Abeona Therapeutics

Abeona Therapeutics Inc. is a commercial-stage biopharmaceutical company developing cell and gene therapies for serious diseases. Abeona's ZEVASKYN^® (prademagene zamikeracel) is the first and only autologous cell-based gene therapy for the treatment of wounds in adults and pediatric patients with recessive dystrophic epidermolysis bullosa (RDEB). The Company's fully integrated cell and gene therapy cGMP manufacturing facility in Cleveland, Ohio serves as the manufacturing site for ZEVASKYN commercial production. The Company's development portfolio features adeno-associated virus (AAV)-based gene therapies for ophthalmic diseases with high unmet medical need. Abeona's novel, next-generation AAV capsids are being evaluated for a variety of devastating diseases. For more information, visit www.abeonatherapeutics.com.

ZEVASKYN^®, Abeona Assist^®, Abeona Therapeutics^®, and their related logos are trademarks of Abeona Therapeutics Inc.

Forward-Looking Statements

This press release contains certain statements that are forward-looking within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and that involve risks and uncertainties. We have attempted to identify forward-looking statements by such terminology as "may," "will," "believe," "anticipate," "expect," "intend," "potential," and similar words and expressions (as well as other words or expressions referencing future events, conditions or circumstances), which constitute and are intended to identify forward-looking statements. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, numerous risks and uncertainties, including but not limited to, our ability to successfully commercialize and market ZEVASKYN, including manufacturing sufficient batches of ZEVASKYN to meet demand; the therapeutic potential of ZEVASKYN; whether the unmet need and market opportunity for ZEVASKYN are consistent with the Company's expectations; continued interest in our rare disease portfolio; our ability to enroll patients in clinical trials; the outcome of future meetings with and inspections by the FDA or other regulatory agencies, including those relating to preclinical programs and to the cGMP manufacturing of ZEVASKYN; the ability to achieve or obtain necessary regulatory approvals for our pre-clinical programs; the impact of any changes in the financial markets and global economic conditions, including those resulting from changes to U.S. trade policy, such as current or future tariffs; risks associated with data analysis and reporting; and other risks disclosed in the Company's most recent Annual Report on Form 10-K and subsequent periodic reports filed with the Securities and Exchange Commission. The Company undertakes no obligation to revise these forward-looking statements or to update them to reflect events or circumstances occurring after the date of this press release, whether as a result of new information, future developments or otherwise, except as required by the federal securities laws.

Contacts:

Investor and Media

Greg Gin

VP, Investor Relations and Corporate Communications

Abeona Therapeutics

ir@abeonatherapeutics.com

Investor

Lee M. Stern

Meru Advisors

lstern@meruadvisors.com