Bayer seeks Japenese nod for Aflibercept to treat macular edema following retinal vein occlusion

The submission to the MHLW is supported by favorable outcomes from the global randomized, double-masked, active-controlled phase III QUASAR study. The study was conducted in RVO patients from 27 countries, including Japan. This study achieved its primary endpoint at week 36, showing that patients treated with aflibercept 8 mg every 8 weeks (following 3 or 5 initial monthly doses) achieved visual acuity improvements that were non-inferior to patients receiving the current standard treatment, Eylea 2 mg (aflibercept 2 mg) every 4 weeks.

“Japan is an important market for Bayer in ophthalmology and today's submission marks a significant step towards enhancing patient care in retinal vein occlusion,” said Christine Roth, Executive Vice President, Global Product Strategy and Commercialization, and Member of the Pharmaceuticals Leadership Team at Bayer. “Following approval in Japan, aflibercept 8 mg may offer extended treatment intervals for patients affected by macular edema due to retinal vein occlusion, thereby reducing the burden of frequent injections and clinic visits.”

The QUASAR clinical study demonstrated that approximately 90% of patients on aflibercept 8 mg maintained their extended 8-week dosing intervals through 36 weeks, and almost 70% of patients (in the group with 3 initial monthly dosing) had a last assigned dosing interval of 12 weeks. Importantly, fluid reduction – an indicator of disease control – was similar with extended dosing intervals of aflibercept 8 mg compared with monthly doses of Eylea 2 mg. Additionally, aflibercept 8 mg was well tolerated, and its safety profile was consistent with previous clinical trials.

Eylea 8 mg has been approved to date in more than 50 markets for the treatment of neovascular (wet) age-related macular degeneration (nAMD) and diabetic macular edema (DME). Further regulatory applications for Eylea 8 mg in additional markets are ongoing.

Eylea 8 mg is an anti-vascular endothelial growth factor-treatment (anti-VEGF) that is approved for extended treatment intervals of up to 5 months for both, nAMD and DME, in the EU and UK. In February 2025, Bayer submitted an application to EMA to expand treatment intervals to up to 6 months with Eylea 8 mg for the treatment of nAMD and DME based on clinical evidence from the PULSAR and PHOTON studies.

Eylea 8 mg (aflibercept 8 mg; in the United States: Eylea HD) is being jointly developed by Bayer and Regeneron. Regeneron maintains exclusive rights to Eylea 2 mg (aflibercept 2 mg) and Eylea HD in the United States. Bayer has licensed the exclusive marketing rights outside the United States, where the companies share equally the profits from sales of Eylea 2 mg and Eylea 8 mg.