Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) today announced that the U.S. Food and Drug Administration (FDA) has extended the target action dates to the fourth quarter of 2025 for two EYLEA HD (aflibercept) Injection 8 mg regulatory submissions.
This includes a Chemistry, Manufacturing and Controls (CMC) Prior-Approval Supplement (PAS) for the EYLEA HD prefilled syringe and a supplemental Biologics License Application (sBLA) seeking approval for both the treatment of macular edema following retinal vein occlusion (RVO) and the broadening of the dosing schedule to include every 4-week (monthly) dosing across approved indications.
The FDA extended the review periods after determining that information provided since the completion of a recent inspection of a third-party manufacturer constituted a major amendment to each submission.
As discussed during Regeneron’s second quarter 2025 earnings announcement, this delay was anticipated and resulted from observations during an FDA general site inspection at the filler for these regulatory applications, Catalent Indiana LLC, which was acquired by Novo Nordisk A/S in December 2024. Novo Nordisk submitted a comprehensive response in early August 2025 to address the observations noted by the FDA.
It is our understanding that the FDA will be able to act expeditiously on these applications once the manufacturing issues have been resolved.
EYLEA HD remains available in the U.S. through vial administration. It is approved with dosing intervals from every 8 to 16 weeks for patients with wet age-related macular degeneration (wAMD) and diabetic macular edema (DME), and every 8 to 12 weeks for patients with diabetic retinopathy (DR), following 3 initial monthly doses.
About EYLEA HD
Over a decade ago, Regeneron introduced EYLEA, a vascular endothelial growth factor inhibitor, and transformed the treatment paradigm for certain serious chorioretinal vascular diseases. With a well-established efficacy and consistent safety profile from 16 pivotal trials, EYLEA is approved to treat vision-threatening conditions that impact patients from their earliest days, such as retinopathy of prematurity (ROP), to their later years, including diabetic macular edema (DME), diabetic retinopathy (DR), macular edema following retinal vein occlusion (RVO) and wet age-related macular degeneration (wAMD).
Pushing the boundaries of science further to meet patient needs, EYLEA HD was developed to achieve comparable efficacy and safety to EYLEA, but with fewer injections. EYLEA HD is supported by a robust body of research and is currently approved in the U.S. to treat patients with wAMD, DME and DR.
EYLEA HD (known as Eylea 8 mg in the European Union and Japan) is being jointly developed by Regeneron and Bayer AG. Regeneron maintains exclusive rights to EYLEA and EYLEA HD in the U.S. Bayer has licensed the exclusive marketing rights outside of the U.S., where the companies share equally the profits from sales of EYLEA and EYLEA HD.
About ophthalmology development at Regeneron
At Regeneron, we relentlessly pursue groundbreaking innovations in eye care science to help maintain the eye health of the millions of Americans impacted by vision-threatening conditions. Our expertise in angiogenesis and decades of research serve as our foundation, fueling our ongoing ambition to further innovate new solutions for patients. Our robust and diverse research and development program in ophthalmology includes efforts to potentially address additional serious eye diseases, including geographic atrophy (ongoing phase 3 SIENNA clinical trial), glaucoma and certain inherited retinal diseases.
IMPORTANT SAFETY INFORMATION AND INDICATIONS
INDICATIONS
EYLEA HD (aflibercept) injection 8 mg is a prescription medicine approved for the treatment of patients with wet age-related macular degeneration (AMD), diabetic macular edema (DME), and diabetic retinopathy (DR).
EYLEA (aflibercept) Injection 2 mg is a prescription medicine approved for the treatment of patients with AMD, macular edema following retinal vein occlusion (RVO), diabetic macular edema (DME), diabetic retinopathy (DR), and retinopathy of prematurity (ROP) (0.4 mg).
IMPORTANT SAFETY INFORMATION
- EYLEA HD and EYLEA are administered by injection into the eye. You should not use EYLEA HD or EYLEA if you have an infection in or around the eye, eye pain or redness, or known allergies to any of the ingredients in EYLEA HD or EYLEA, including aflibercept.
- Injections into the eye with EYLEA HD or EYLEA can result in an infection in the eye, retinal detachment (separation of retina from back of the eye) and, more rarely, serious inflammation of blood vessels in the retina that may include blockage. Call your doctor right away if you or your baby (if being treated with EYLEA for Retinopathy of Prematurity) experience eye pain or redness, light sensitivity, or a change in vision after an injection.
- In some patients, injections with EYLEA HD or EYLEA may cause a temporary increase in eye pressure within 1 hour of the injection. Sustained increases in eye pressure have been reported with repeated injections, and your doctor may monitor this after each injection.
- In infants with retinopathy of prematurity (ROP), treatment with EYLEA will need extended periods of ROP monitoring.
- There is a potential but rare risk of serious and sometimes fatal side effects, related to blood clots, leading to heart attack or stroke in patients receiving EYLEA HD or EYLEA.
- The most common side effects reported in patients receiving EYLEA HD were cataract, increased redness in the eye, increased pressure in the eye, eye discomfort, pain, or irritation, blurred vision, vitreous (gel-like substance) floaters, vitreous detachment, injury to the outer layer of the eye, and bleeding in the back of the eye.
- The most common side effects reported in patients receiving EYLEA were increased redness in the eye, eye pain, cataract, vitreous detachment, vitreous floaters, moving spots in the field of vision, and increased pressure in the eye.
- The most common side effects reported in pre-term infants with ROP receiving EYLEA were separation of the retina from the back of the eye, increased redness in the eye, and increased pressure in the eye. Side effects that occurred in adults are considered applicable to pre-term infants with ROP, though not all were seen in clinical studies.
- You may experience temporary visual changes after an EYLEA HD or EYLEA injection and associated eye exams; do not drive or use machinery until your vision recovers sufficiently.
- For additional safety information, please talk to your doctor and see the full Prescribing Information for EYLEA HD and EYLEA.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.
Please click here for full Prescribing Information for EYLEA HD and EYLEA.