Epidermolysis Bullosa

The US Food and Drug Administration (FDA) has approved Abeona Therapeutics’ Zevaskyn (prademagene zamikeracel) for use in recessive dystrophic epidermolysis bullosa (RDEB). The decision makes Zevaskyn the first autologous cell-based gene therapy approved in the US to treat wounds in adult and paediatric patients with the rare skin disorder. RDEB is an incurable connective tissue disease that causes the skin to become very fragile. It is characterised by extensive blistering and severe wounds that often cover more than 30% of a patient’s body surface. Zevaskyn consists of a patient’s own skin cells that are genetically modified to produce functional type VII collagen, which RDEB patients are unable to produce due to a defect in both copies of the COL7A1 gene. The therapy is surgically applied to a patient’s wounded areas in the form of a sheet and is expected to be available in the US from the third quarter of this year. Abeona’s chief executive officer, Vish Seshadri, said the approval represents a “pivotal moment in the treatment of RDEB”. “Through a single surgical application, Zevaskyn can now offer people with RDEB the opportunity for wound healing and pain reduction in even the most severe wounds,” Seshadri said. The FDA’s approval was supported by results from the phase 3 VIITAL study, which demonstrated significant wound healing and pain reduction after a single treatment with Zevaskyn. In the trial, 81% of the 43 large and chronic wounds treated with a single application of Abeona’s therapy showed 50% or more healing at six months, compared to 16% in 43 matched control wounds treated with standard of care. A phase 1/2a study in 38 chronic wounds across seven patients also showed that a single application of Zevaskyn was associated with long-term improvement at treated sites over a median follow-up of 6.9 years. Zevaskyn was well-tolerated in both studies, with no treatment-related serious adverse events observed to date. Madhav Vasanthavada, Abeona’s chief commercial officer, said: “Based on the strength of our data across clinical trials, we are confident in Zevaskyn’s ability to deliver long-term results after a single treatment application. “We are committed to working closely with both commercial and government payers on outcome-based agreements that stand behind the promise of Zevaskyn for patients, and expedite access.”

ASHBURN, Va., April 30, 2025 (GLOBE NEWSWIRE) -- Quoin Pharmaceuticals Ltd. (NASDAQ: QNRX) (the “Company” or “Quoin”), a late clinical stage, specialty pharmaceutical company focused on the development and commercialization of therapeutic products that treat rare and orphan diseases, today announces that it has received written notice from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) stating that the Company has regained compliance with the minimum bid price requirement under Nasdaq Listing Rule 5550(a)(2). The notification from Nasdaq confirms that for the last 13 consecutive business days, the closing bid price of the Company’s ordinary shares was at or above $1.00 per share. Accordingly, Nasdaq considers the matter closed. About Quoin Pharmaceuticals Ltd. Quoin Pharmaceuticals Ltd. is a late clinical-stage specialty pharmaceutical company focused on developing and commercializing therapeutic products that treat rare and orphan diseases. We are committed to addressing unmet medical needs for patients, their families, communities and care teams. Quoin’s innovative pipeline comprises four products in development that collectively have the potential to target a broad number of rare and orphan indications, including Netherton Syndrome, Peeling Skin Syndrome, SAM Syndrome, Palmoplantar Keratoderma, Scleroderma, Epidermolysis Bullosa, Microcystic Lymphatic Malformations, Venous Malformations, Angiofibroma and others. For more information, visit: www.quoinpharma.com or LinkedIn for updates. Cautionary Note Regarding Forward Looking Statements The Company cautions that statements in this press release that are not descriptions of historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of words referencing future events or circumstances, such as “expect,” “intend,” “hope,” “plan,” “potential,” “anticipate,” “look forward,” “believe,” “may,” and “will,” among others. All statements that reflect the Company’s expectations, assumptions, projections, beliefs, or opinions about the future, other than statements of historical fact, are forward-looking statements, including, without limitation, statements relating to: Quoin’s products in development collectively having the potential to target a broad number of rare and orphan indications, including Netherton Syndrome, Peeling Skin Syndrome, SAM Syndrome, Palmoplantar Keratoderma, Scleroderma, Epidermolysis Bullosa, Microcystic Lymphatic Malformations, Venous Malformations, Angiofibroma and others. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. These forward-looking statements are based upon the Company’s current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties including, but not limited to, the Company’s ability to deliver a safe and effective treatment for Netherton Syndrome; whether the Company’s studies successfully generate data that is sufficiently robust and comprehensive to support an NDA filing for QRX003 as an approved treatment for Netherton Syndrome; and other factors discussed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 and in other filings the Company has made and may make with the SEC in the future. One should not place undue reliance on these forward-looking statements, which speak only as of the date on which they were made. The Company undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as may be required by law. For further information, contact: Quoin Pharmaceuticals Ltd. Michael Myers, Ph.D., CEO mmyers@quoinpharma.com Investor Relations PCG Advisory Jeff Ramson jramson@pcgadvisory.com (646) 863-6341

Zevaskyn is applied as genetically engineered skin grafts to treat chronic wounds in RDEB patients. Credit: Eder Paisan via Getty Images. Abeona Therapeutics has secured US Food and Drug Administration (FDA) approval for Zevaskyn (prademagene zamikeracel), a gene-corrected cell therapy designed to treat recessive dystrophic epidermolysis bullosa (RDEB). The approval follows years of clinical development and regulatory setbacks, and positions Abeona as the second company to bring a therapy for this condition to the US market. Also known as pz-cel, Zevaskyn is indicated for both paediatric and adult patients with RDEB. The therapy is administered as credit card-sized sheets of skin made from the patient’s own keratinocytes, which are harvested, genetically modified to express the functional COL7A1 gene, and surgically applied to chronic wounds. The COL7A1 gene encodes a type of collagen essential for anchoring skin layers – something patients with RDEB lack due to genetic mutations. The FDA had previously rejected an application from Abeona last year, citing outstanding manufacturing and quality control (QC) concerns. Following a complete response (CR) letter and further chemistry, manufacturing and controls (CMC) submissions, the agency granted approval based on results from a pivotal Phase III study (NCT04227106). Despite a partial clinical hold in 2019 , the study met both co-primary endpoints of wound healing and pain reduction, with no serious treatment-related adverse events (AEs) reported. The company also provided confirmatory evidence from a Phase I/IIa trial (NCT01263379), which supported the durability of healing after a single application. Zevaskyn is priced at $3.1m, placing it among the most expensive therapies in the US but in line with other rare disease gene and cell therapies. Abeona expects to make the product available commercially in Q3 2025. The company raised $35m in late 2022 after announcing the Phase III data, followed by a $25m financing round in July 2024 to support manufacturing and launch readiness. GlobalData Strategic Intelligence US Tariffs are shifting - will you react or anticipate? Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis. By GlobalData Learn more about Strategic Intelligence Krystal Biotech’s Vyjuvek (beremagene geperpavec), a topical gene therapy gel for DEB, was approved in 2023 and generated $290.5m in revenue in 2024. Unlike Zevaskyn, which is applied once through surgery, Vyjuvek is dosed weekly and costs around $631,000 per patient per year. Vyjuvek also delivers a functional COL7A1 gene, though via a re-dosable, non-integrating viral vector. In the 29 April announcement, Abeona’s CEO Vish Seshadri, said: “We have heard from the RDEB community that there is a persistent unmet need to reliably address RDEB wounds, especially those that are chronic and prone to infection. Through a single surgical application, Zevaskyn can now offer people with RDEB the opportunity for wound healing and pain reduction in even the most severe wounds, as evidenced by the results from our pivotal Phase III study.” In connection with the approval, Abeona received a rare paediatric disease priority review voucher (PRV), which the company said it plans to monetise. The PRV programme, which grants expedited FDA review for a future drug application, is set to expire soon unless renewed by Congress. Rare disease advocates have warned that the programme’s lapse , combined with existing FDA resource constraints, could deter future investment in paediatric rare disease research and development.