- FDA will consider an accelerated approval pathway for RGX-121; BLA filing expected in 2024
- Pivotal program is active and enrolling patients
- RGX-121 is a potential first-in-class, one-time gene therapy for the treatment of MPS II
- Internal cGMP manufacturing process expected to support BLA
ROCKVILLE, Md., Aug. 3, 2022 /PRNewswire/ -- REGENXBIO Inc. (Nasdaq: RGNX) today announced its intention to file a Biologics License Application (BLA) in 2024 using the FDA's accelerated approval pathway for RGX-121 for the treatment of Mucopolysaccharidosis Type II (MPS II), also known as Hunter Syndrome. The Company also announced that a pivotal program for RGX-121 is active and enrolling patients. RGX-121 is an investigational, one-time AAV Therapeutic using the NAV AAV9 vector to deliver the gene that encodes the iduronate-2-sulfatase (I2S) enzyme.
"We are pleased to share that our recent discussions with the FDA support our plans to submit a BLA for RGX-121 in 2024 using the accelerated approval pathway, which was created to allow for expedited development of drugs that treat serious conditions and provide a meaningful advantage over available therapies based on a surrogate endpoint," said Kenneth T. Mills, President and Chief Executive Officer of REGENXBIO. "We believe RGX-121 for the treatment of Hunter Syndrome has demonstrated emerging positive impact on neurodevelopmental function, and we intend to advance this program as quickly as possible with the aim of providing a much-needed new treatment option for the MPS II community."