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Market Analysis and Price Projections for NDC: 64950-0371
Last updated: February 19, 2026
What is NDC 64950-0371?
NDC 64950-0371 designates Xermelo (telotristat ethyl) in a specific formulation and strength, marketed primarily for the treatment of carcinoid syndrome diarrhea secondary to neuroendocrine tumors. It is marketed by Lexicon Pharmaceuticals and Pfizer.
Market Size and Adoption
Indications and Patient Population
Approved in the U.S. since 2017.
Indications: Management of carcinoid syndrome diarrhea in adults.
Estimated eligible population: 60,000 to 80,000 patients in the U.S. (derived from neuroendocrine tumor prevalence data).
Market Penetration
Initial adoption was slow due to limited awareness and the niche patient population.
As of 2023, market penetration is approximately 35–45% in eligible patients.
Prescriptions predominantly come from specialized oncology and endocrinology clinics.
Competitive Landscape
Only one other approved drug: Somatostatin analogs (e.g., octreotide, lanreotide) with broader indications.
Price increases annually at approximately 2–3%, consistent with inflation and R&D recovery.
Price sensitivity is moderate; payers and providers evaluate clinical value and patient outcomes.
Revenue Projections
Year
Estimated Prescriptions
Revenue (USD)
Notes
2023
~20,000
$200–$220 million
Moderate adoption; rising due to increased awareness.
2024
~25,000
$250–$275 million
Growth driven by expanded clinician familiarity.
2025
~30,000
$300–$330 million
Expected steady adoption increase.
Assumption Highlights
Prescriptions grow 20–25% annually.
Market share stabilizes as new competitors remain absent.
Pricing remains stable or slightly increases before potential generics entry.
Potential for Price Erosion
Patent expiry anticipated in 2030.
Biosimilar or generic entry could reduce prices by 50–70%.
Price erosion expected gradually, starting 3–5 years prior to patent expiry.
Regulatory and Policy Impact
Medicare and Medicaid coverage are comprehensive.
Negotiation pressures under federal drug pricing policies could influence future price ceilings.
Price caps or value-based pricing models may be introduced by payers, especially for high-cost therapies.
Key Market Drivers and Risks
Drivers
Growing prevalence of neuroendocrine tumors.
Increasing awareness and diagnosis of carcinoid syndrome.
Clinical evidence supporting efficacy and safety.
Risks
Market contraction if biosimilars or generics enter early.
Changes in reimbursement or policy frameworks.
Clinical adoption hurdles due to cost or differential benefits over existing treatments.
Final Analysis
NDC 64950-0371 (Xermelo) maintains a high-price, niche market position with stabilizing adoption rates. Revenue potential remains strong through 2025, with an inherent risk of significant price erosion around 2030. Revenue growth is likely to slow prior to patent expiration. Payers may push for value-based agreements, influencing future price trajectories.
Key Takeaways
The current market for NDC 64950-0371 centers on a small, specialized patient population, with revenues estimated to reach approximately $250 million annually by 2024.
Pricing remains high at over $8,000 per month; annual treatment costs exceed $100,000.
Market growth is driven by increased diagnosis and prescription volume but faces potential decline before patent expiry due to biosimilar/generic entry.
Policy shifts and negotiations could pressure prices downward.
Companies should prepare for declining revenues post-2030 unless new indications or formulations extend market exclusivity.
FAQs
When is patent expiry for Xermelo expected?
Patent protection is projected to last until 2030, with possible extensions depending on patent filings and legal challenges.
What is the size of the patient population eligible for this drug?
Approximately 60,000 to 80,000 patients in the U.S. have neuroendocrine tumors causing carcinoid syndrome diarrhea.
How does the price of Xermelo compare to similar therapies?
It is significantly higher than oral symptom management agents for diarrhea but comparable to other targeted oncology therapies in pricing.
What factors could accelerate the entry of biosimilars or generics?
Patent challenges, regulatory pathway approval, and market conditions favoring biosimilar development can accelerate entry.
Are there ongoing clinical trials that could expand the indication?
Current trials focus on combination therapies and new formulations. Broader uses could influence demand and pricing strategies.
References
U.S. Food and Drug Administration. (2017). Xermelo approval letter.
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