The Four-Year Itch
Not long ago, the market for severe eczema treatments was a rather predictable, stagnant affair. Then, Eli Lilly published long-term data for its biologic, EBGLYSS. The results were startling. Patients maintained clear skin for four years without needing topical steroids.
This is not just a medical relief for patients. It is a formidable commercial moat.
Chronic skin conditions do not cure themselves, and that means recurring revenue.
Eczema and psoriasis are lifelong companions. When a drug keeps working year after year, the patient stays on it. Prescriptions renew automatically. In the tech sector, investors happily pay astronomical premiums for a software subscription model. In biopharma, we simply call it a chronic disease indication. The financial mechanics are beautifully identical.