Detailed Narrative
Incretin Market Leadership and Supply Expansion
Lilly's incretin medicines, Mounjaro and Zepbound, drove significant Q4 revenue growth, with Zepbound becoming the market leader in new anti-obesity prescriptions. The company is aggressively expanding manufacturing capacity, aiming to produce 1.6x more salable incretin doses in H1 2025 compared to H1 2024, with a new facility in Concord expected to ship medicines this year. This expansion addresses high demand and supports global launches.
Pipeline Advancements and Strategic Investments
Lilly initiated 8 new Phase III programs in 2024 and plans to start two more in 2025, including olomorasib for adjuvant non-small cell lung cancer and Orforglipron for hypertension. The company is also scaling R&D investment and exploring new applications for incretin biology in neuroscience and immunology, with several clinical trials planned for brain health, substance use disorder, pain, neuropsychiatry, and inflammation.
Orforglipron Development Strategy
Orforglipron, an oral GLP-1, is a key focus, with multiple Phase III readouts expected in 2025 for type 2 diabetes (Q2 and H2) and obesity (Q3). The goal is to achieve efficacy and tolerability similar to injectable single-acting GLP-1s, with initial regulatory submissions for obesity expected late 2025, followed by type 2 diabetes in 2026. The company is building manufacturing capacity for a full-scale launch, not gated by supply.
Zepbound Access and Compounding Litigation
Zepbound maintains strong commercial access (87% coverage) with over 50% employer opt-in. The recent OSA label is expected to improve Medicare and Medicaid coverage in H2 2025. Lilly continues to oppose compounding, citing full supply and safety concerns, with a court date on February 18 regarding a specific compounding form. The company believes compounding is an unsafe practice that should not exist.
Kisunla and Ebglyss Launch Momentum
Kisunla's launch is progressing well, with over 80% P&T approvals in key accounts and increasing diagnostic orders. Ebglyss shows early positive receptivity, with commercial access from two major PBMs expected in March, prompting accelerated investment in commercial activities. The company is leveraging lessons from prior Alzheimer's drug launches to improve system readiness for Kisunla, focusing on capacity to detect and diagnose patients.
VOLENRELAXIN Program Discontinuation
Lilly discontinued the VOLENRELAXIN program in heart failure and CKD following disappointing Phase II trial results. While the relaxin mechanism is considered interesting and validated by human physiology, the specific molecule did not support further development. Other companies are pursuing this mechanism.