INVESTORS & MEDIA

Presentations reinforce that aflibercept 8 mg demonstrated non-inferior vision gains to EYLEA at 48 weeks, with 93% and 83% of patients in PHOTON and PULSAR, respectively, maintaining dosing intervals of 12 weeks or longer after initial monthly doses

Additional new pre-specified and exploratory analyses showed aflibercept 8 mg led to sustained improvements in certain anatomical measures during the 48-week treatment period for both 12- and 16-week dosing regimens in PHOTON and PULSAR

TARRYTOWN, N.Y., Nov. 4, 2022 /PRNewswire/ -- Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) today announced late-breaking presentations of updated results from two positive pivotal trials investigating novel aflibercept 8 mg with 12- and 16-week dosing regimens, compared to EYLEA^® (aflibercept) Injection, in patients with diabetic macular edema (DME) and wet age-related macular degeneration (wAMD). The positive data from PHOTON and PULSAR were presented at the 55th Annual Scientific Session of The Retina Society in Pasadena, California.

"Investigational aflibercept 8 mg allowed the vast majority of patients to be maintained on extended dosing intervals with outcomes that were generally consistent with EYLEA across time points during the 48-week treatment period," said David Brown, M.D., FACS, Director of Research at Retina Consultants of Texas in the U.S. and a trial investigator. "Together, the PHOTON and PULSAR presentations at Retina Society show aflibercept 8 mg can potentially lead to significant and clinically meaningful outcomes with a reduced treatment burden for patients with diabetic macular edema and wet age-related macular degeneration."

As previously announced, the presentations at Retina Society showed that the PHOTON trial in DME (N=658) and the PULSAR trial in wAMD (N=1,009) met their primary endpoint, with aflibercept 8 mg demonstrating non-inferior vision gains at 48 weeks with both 12- and 16-week dosing regimens after initial monthly doses, compared to an EYLEA 8-week dosing regimen. Aflibercept 8 mg patients were rapidly initiated on extended dosing regimens and among patients who completed week 48, 93% (n=456) in PHOTON and 83% (n=628) in PULSAR maintained dosing intervals of 12 weeks or more.

In addition to data recently shared at the American Association for Ophthalmology Annual Meeting, the new efficacy analyses presented at Retina Society showed aflibercept 8 mg led to similar improvements in certain anatomical measures at 48 weeks, compared to EYLEA, despite extended dosing regimens. For the aflibercept 8 mg 12- and 16-week dosing regimens, respectively, the results showed that:

• Among wAMD patients, 71% (n=332) and 67% (n=334) had no retinal fluid in the center subfield, compared to 59% for EYLEA (n=335), per a pre-specified analysis of PULSAR. The median time to a fluid-free subfield was 4 weeks for aflibercept 8 mg, compared to 8 weeks for EYLEA.
• Among DME patients, there was a mean reduction of 14 mm² (n= 328) and 9 mm² (n=163) in the total area of fluorescein leakage from baseline, compared to 9 mm² for EYLEA (n=167), per an exploratory analysis of PHOTON. Reductions in fluorescein leakage, a measure of disease activity, are associated with disease improvement.

The safety of aflibercept 8 mg was similar to EYLEA in both trials, and consistent with the known safety profile of EYLEA from previous clinical trials. The most frequent ocular adverse events that occurred more commonly in aflibercept 8 mg versus EYLEA patients in PHOTON (aflibercept 8 mg n=491; EYLEA n=167) were cataract (3% vs. 1%), conjunctival hemorrhage (4% vs. 4%), punctate keratitis (2% vs. <1%), retinal hemorrhage (1% vs. <1%) and vitreous floaters (4% vs. 2%). In PULSAR (aflibercept 8 mg n=673; EYLEA n=336), they were cataract (4% vs. 3%) and intraocular pressure increased (3% vs. 2%). There were no cases of retinal vasculitis, occlusive retinitis or endophthalmitis in either trial.

"These data show unprecedented durability of aflibercept 8 mg in patients living with age-related macular degeneration and diabetic macular edema, who also experienced significant anatomical improvements at week 48," said Jean-François Korobelnik, Professor of Ophthalmology and Head of the Department of Ophthalmology at University Hospital of Bordeaux in France and principal trial investigator.

Aflibercept 8 mg is being jointly developed by Regeneron and Bayer AG. In the U.S., Regeneron maintains exclusive rights to EYLEA and aflibercept 8 mg. Bayer has licensed the exclusive marketing rights outside of the U.S., where the companies share equally the profits from sales of EYLEA.

Aflibercept 8 mg is investigational, and its safety and efficacy have not been evaluated by any regulatory authority.

PHOTON in DME and PULSAR in wAMD are double-masked, active-controlled pivotal trials that are being conducted in multiple centers globally. In both trials, patients were randomized into 3 treatment groups to receive either: aflibercept 8 mg every 12 weeks, aflibercept 8 mg every 16 weeks, or EYLEA every 8 weeks.

Patients treated with aflibercept 8 mg in both trials had 3 initial monthly doses, and patients treated with EYLEA received 5 initial monthly doses in PHOTON and 3 in PULSAR. In the first year, patients in the aflibercept 8 mg groups could have their dosing intervals shortened down to an every 8-week interval if protocol-defined criteria for disease progression were observed. Intervals could not be extended until the second year of the study, with those results still to be assessed. Patients in all EYLEA groups maintained a fixed 8-week dosing regimen throughout their participation in the trials.

The lead sponsors of the trials were Regeneron for PHOTON and Bayer for PULSAR.

DME is a common complication in eyes of people living with diabetes. DME occurs when high levels of blood sugar lead to damaged blood vessels in the eye that leak fluid into the macula. This can lead to vision loss and, in some cases, blindness. Of the nearly 28 million American adults living with diabetes, an estimated 1.2 million have DME.

wAMD is a retinal disease that may affect people as they age. It occurs when abnormal blood vessels grow and leak fluid under the macula, the part of the eye responsible for sharp central vision and seeing fine detail. This fluid can damage and scar the macula, which can cause vision loss. An estimated 1.1 million Americans have wAMD, and this number is expected to double by 2050.

EYLEA^® (aflibercept) Injection 2 mg (0.05 mL) is indicated for the treatment of patients with Neovascular (Wet) Age-related Macular Degeneration (AMD), Macular Edema following Retinal Vein Occlusion (RVO), Diabetic Macular Edema (DME), and Diabetic Retinopathy (DR).

• EYLEA is contraindicated in patients with ocular or periocular infections, active intraocular inflammation, or known hypersensitivity to aflibercept or to any of the excipients in EYLEA.

• Intravitreal injections, including those with EYLEA, have been associated with endophthalmitis and retinal detachments. Proper aseptic injection technique must always be used when administering EYLEA. Patients should be instructed to report any symptoms suggestive of endophthalmitis or retinal detachment without delay and should be managed appropriately. Intraocular inflammation has been reported with the use of EYLEA.
• Acute increases in intraocular pressure have been seen within 60 minutes of intravitreal injection, including with EYLEA. Sustained increases in intraocular pressure have also been reported after repeated intravitreal dosing with VEGF inhibitors. Intraocular pressure and the perfusion of the optic nerve head should be monitored and managed appropriately.
• There is a potential risk of arterial thromboembolic events (ATEs) following intravitreal use of VEGF inhibitors, including EYLEA. ATEs are defined as nonfatal stroke, nonfatal myocardial infarction, or vascular death (including deaths of unknown cause). The incidence of reported thromboembolic events in wet AMD studies during the first year was 1.8% (32 out of 1824) in the combined group of patients treated with EYLEA compared with 1.5% (9 out of 595) in patients treated with ranibizumab; through 96 weeks, the incidence was 3.3% (60 out of 1824) in the EYLEA group compared with 3.2% (19 out of 595) in the ranibizumab group. The incidence in the DME studies from baseline to week 52 was 3.3% (19 out of 578) in the combined group of patients treated with EYLEA compared with 2.8% (8 out of 287) in the control group; from baseline to week 100, the incidence was 6.4% (37 out of 578) in the combined group of patients treated with EYLEA compared with 4.2% (12 out of 287) in the control group. There were no reported thromboembolic events in the patients treated with EYLEA in the first six months of the RVO studies.

• Serious adverse reactions related to the injection procedure have occurred in <0.1% of intravitreal injections with EYLEA including endophthalmitis and retinal detachment.
• The most common adverse reactions (≥5%) reported in patients receiving EYLEA were conjunctival hemorrhage, eye pain, cataract, vitreous detachment, vitreous floaters, and intraocular pressure increased.
• Patients may experience temporary visual disturbances after an intravitreal injection with EYLEA and the associated eye examinations. Advise patients not to drive or use machinery until visual function has recovered sufficiently.

For more information, please see full Prescribing Information.

Regeneron (NASDAQ: REGN) is a leading biotechnology company that invents, develops and commercializes life-transforming medicines for people with serious diseases. Founded and led for nearly 35 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to nine FDA-approved treatments and numerous product candidates in development, almost all of which were homegrown in our laboratories. Our medicines and pipeline are designed to help patients with eye diseases, allergic and inflammatory diseases, cancer, cardiovascular and metabolic diseases, pain, hematologic conditions, infectious diseases and rare diseases.

Regeneron is accelerating and improving the traditional drug development process through our proprietary VelociSuite^® technologies, such as VelocImmune^®, which uses unique genetically humanized mice to produce optimized fully human antibodies and bispecific antibodies, and through ambitious research initiatives such as the Regeneron Genetics Center^®, which is conducting one of the largest genetics sequencing efforts in the world.

For more information, please visit www.Regeneron.com or follow @Regeneron on Twitter.

This press release includes forward-looking statements that involve risks and uncertainties relating to future events and the future performance of Regeneron Pharmaceuticals, Inc. ("Regeneron" or the "Company"), and actual events or results may differ materially from these forward-looking statements. Words such as "anticipate," "expect," "intend," "plan," "believe," "seek," "estimate," variations of such words, and similar expressions are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. These statements concern, and these risks and uncertainties include, among others, the impact of SARS-CoV-2 (the virus that has caused the COVID-19 pandemic) on Regeneron's business and its employees, collaborators, and suppliers and other third parties on which Regeneron relies, Regeneron's and its collaborators' ability to continue to conduct research and clinical programs, Regeneron's ability to manage its supply chain, net product sales of products marketed or otherwise commercialized by Regeneron and/or its collaborators or licensees (collectively, "Regeneron's Products"), and the global economy; the nature, timing, and possible success and therapeutic applications of Regeneron's Products and product candidates being developed by Regeneron and/or its collaborators or licensees (collectively, "Regeneron's Product Candidates") and research and clinical programs now underway or planned, including without limitation EYLEA^® (aflibercept) Injection and novel aflibercept 8 mg; the likelihood, timing, and scope of possible regulatory approval and commercial launch of Regeneron's Product Candidates (such as aflibercept 8 mg) and new indications for Regeneron's Products; the extent to which the results from the research and development programs conducted by Regeneron and/or its collaborators or licensees (including the aflibercept 8 mg development program and the pivotal studies evaluating aflibercept 8 mg discussed in this press release) may be replicated in other studies and/or lead to advancement of product candidates to clinical trials, therapeutic applications, or regulatory approval; uncertainty of the utilization, market acceptance, and commercial success of Regeneron's Products and Regeneron's Product Candidates and the impact of studies (whether conducted by Regeneron or others and whether mandated or voluntary), including the studies discussed or referenced in this press release, on any of the foregoing or any potential regulatory approval of Regeneron's Products and Regeneron's Product Candidates (such as aflibercept 8 mg); the ability of Regeneron's collaborators, licensees, suppliers, or other third parties (as applicable) to perform manufacturing, filling, finishing, packaging, labeling, distribution, and other steps related to Regeneron's Products and Regeneron's Product Candidates; the ability of Regeneron to manage supply chains for multiple products and product candidates; safety issues resulting from the administration of Regeneron's Products and Regeneron's Product Candidates (such as aflibercept 8 mg) in patients, including serious complications or side effects in connection with the use of Regeneron's Products and Regeneron's Product Candidates in clinical trials; determinations by regulatory and administrative governmental authorities which may delay or restrict Regeneron's ability to continue to develop or commercialize Regeneron's Products and Regeneron's Product Candidates, including without limitation aflibercept 8 mg; ongoing regulatory obligations and oversight impacting Regeneron's Products, research and clinical programs, and business, including those relating to patient privacy; the availability and extent of reimbursement of Regeneron's Products from third-party payers, including private payer healthcare and insurance programs, health maintenance organizations, pharmacy benefit management companies, and government programs such as Medicare and Medicaid; coverage and reimbursement determinations by such payers and new policies and procedures adopted by such payers; competing drugs and product candidates that may be superior to, or more cost effective than, Regeneron's Products and Regeneron's Product Candidates; unanticipated expenses; the costs of developing, producing, and selling products; the ability of Regeneron to meet any of its financial projections or guidance and changes to the assumptions underlying those projections or guidance; the potential for any license or collaboration agreement, including Regeneron's agreements with Sanofi and Bayer (or their respective affiliated companies, as applicable), to be cancelled or terminated; and risks associated with intellectual property of other parties and pending or future litigation relating thereto (including without limitation the patent litigation and other related proceedings relating to EYLEA, Praluent^® (alirocumab), and REGEN-COV^® (casirivimab and imdevimab)), other litigation and other proceedings and government investigations relating to the Company and/or its operations, the ultimate outcome of any such proceedings and investigations, and the impact any of the foregoing may have on Regeneron's business, prospects, operating results, and financial condition. 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