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News Release - February 12, 2021
Mallinckrodt Provides Regulatory Update on StrataGraft(R)DUBLIN, Feb. 12, 2021 -- (Healthcare Sales & Marketing Network) -- Mallinckrodt plc, a global biopharmaceutical company, today announced that the U.S. Food and Drug Administration (FDA) has informed the Company that it is deferring action (pending a site inspection) on the Stratatech Biologics License Application (BLA) for StrataGraft®, an investigational allogeneic cellularized scaffold product in development for the treatment of adult patients with deep partial-thickness burns. This is due to COVID-19-related travel restrictions, which are delaying a required manufacturing site inspection.
The Biomedical Advanced Research and Development Authority (BARDA), part of the Office of the Assistant Secretary for Preparedness and Response at the U.S. Department of Health and Human Services (HHS), has provided funding and technical support for the continued development of StrataGraft under Project BioShield Contract No. HHSO100201500027C.
"We are confident in the efficacy and safety of StrataGraft for the treatment of deep partial-thickness burns based on our pivotal Phase 3 clinical trial results," said Steven Romano, M.D., Executive Vice President and Chief Scientific Officer at Mallinckrodt. "We plan to work closely with the FDA to complete the review and schedule its site inspection. We remain committed to the burn care community, with a goal of ultimately providing this patient population with a new treatment option that could reduce the need for autografting of healthy skin."
The FDA granted the BLA for StrataGraft priority review. Previously, the FDA granted StrataGraft orphan drug status, and it was among the first products designated by the agency as a Regenerative Medicine Advanced Therapy (RMAT) under the provisions of the 21st Century Cures Act.
StrataGraft is an investigational treatment being developed to reduce autograft in patients with severe thermal burns. An engineered, bilayer construct, StrataGraft is designed to mimic natural human skin with both inner dermis-like and outer epidermis-like layers. StrataGraft can be sutured, stapled or secured with an adhesive. StrataGraft is cryopreserved in order to deliver viable cells upon application.
Mallinckrodt is currently conducting a StrataGraft continued access clinical trial (StrataCAT, NCT04123548) under an Expanded Access Program (EAP). The trial sites involved in the pivotal Phase 3 trial (STRATA2016, NCT03005106) have the opportunity to participate in this multicenter, open-label study. The company is planning to evaluate StrataGraft for the treatment of adults with full-thickness burns (also referred to as third-degree burns). Additionally, Mallinckrodt plans to conduct a study evaluating StrataGraft in the treatment of pediatric populations.
StrataGraft is an investigational product, and its safety and effectiveness have not yet been established by the FDA.
The continued development of StrataGraft, including the pivotal Phase 3 clinical study (STRATA2016), and the BLA process for StrataGraft in the United States, is being supported through a partnership with BARDA. These efforts are part of BARDA's strategy to build emergency preparedness in response to mass casualty events involving trauma and thermal burns by developing novel medical countermeasures for adult and at-risk populations. In the case of a mass casualty thermal burn event, the Government Accountability Office estimates that more than 10,000 patients might require thermal burn care.1 The limited number of specialized burn centers and related medical infrastructure in the United States creates a public health need for therapies that could be deployed quickly for use in these and other care sites.
About Deep Partial-Thickness Thermal Burns
Deep partial-thickness thermal burns are complex skin injuries in which the damage extends through the entire epidermis (outermost layer of skin) and into the lower part of the dermis (innermost layer of skin).
Autograft is considered to be a standard of care by many for deep partial-thickness thermal burns. It involves the surgical harvesting of healthy skin tissue from an uninjured site on the patient and transplanting the skin graft to the injury. While this process can be effective in providing closure of the original wound, it has significant limitations related to the donor site wounds created during surgical removal of the skin tissue for grafting. Donor site wounds are painful and can create risks of additional scarring and infection. In addition, the amount of healthy skin available for harvesting is frequently limited in those patients with large burns, necessitating sequential re-harvesting of available donor sites. As a result, there is a need for alternatives to donor site harvesting for the treatment of severe burns.
Mallinckrodt is a global business consisting of multiple wholly owned subsidiaries that develop, manufacture, market and distribute specialty pharmaceutical products and therapies. The company's Specialty Brands reportable segment's areas of focus include autoimmune and rare diseases in specialty areas like neurology, rheumatology, nephrology, pulmonology and ophthalmology; immunotherapy and neonatal respiratory critical care therapies; analgesics and gastrointestinal products. Its Specialty Generics reportable segment includes specialty generic drugs and active pharmaceutical ingredients. To learn more about Mallinckrodt, visit www.mallinckrodt.com.
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Cautionary Statements Related to Forward-Looking Statements
This release includes forward-looking statements concerning StrataGraft, including the regulatory review process, its potential impact on patients and anticipated benefits associated with its use, and future clinical trial plans. The statements are based on assumptions about many important factors, including the following, which could cause actual results to differ materially from those in the forward-looking statements: satisfaction of regulatory and other requirements; actions of regulatory bodies and other governmental authorities; changes in laws and regulations; issues with product quality, manufacturing or supply, or patient safety issues; and other risks identified and described in more detail in the "Risk Factors" section of Mallinckrodt's most recent Annual Report on Form 10-K and other filings with the SEC, all of which are available on its website. The forward-looking statements made herein speak only as of the date hereof and Mallinckrodt does not assume any obligation to update or revise any forward-looking statement, whether as a result of new information, future events and developments or otherwise, except as required by law.
Mallinckrodt, the "M" brand mark and the Mallinckrodt Pharmaceuticals logo are trademarks of a Mallinckrodt company. Other brands are trademarks of a Mallinckrodt company or their respective owners.
1 United States Government Accountability Office. National Preparedness: Countermeasures for Thermal Burns. https://www.gao.gov/assets/590/588738.pdf. Accessed February 4, 2021.
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