Santen Pharmaceutical (4536 JP) is the market leader for prescription ophthalmic pharmaceuticals in Japan, with 52% market share. 68% of total revenue comes from domestic market.
Santen’s key partnered drug, Eylea, which contributes 29% of total revenue, is set to lose patent protection in Japan this year.
Eylea is expected to face competition from biosimilars as well as new biologic drugs launched. This will limit Santen’s near-term growth potential.
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