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Last Updated: March 26, 2026

HUMATIN Drug Patent Profile


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When do Humatin patents expire, and when can generic versions of Humatin launch?

Humatin is a drug marketed by King Pfizer, Parkedale, and Parke Davis. and is included in three NDAs.

The generic ingredient in HUMATIN is paromomycin sulfate. There is one drug master file entry for this compound. One supplier is listed for this compound. Additional details are available on the paromomycin sulfate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Humatin

A generic version of HUMATIN was approved as paromomycin sulfate by HERITAGE on December 14th, 2007.

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  • What is the 5 year forecast for HUMATIN?
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Summary for HUMATIN
US Patents:0
Applicants:3
NDAs:3
Raw Ingredient (Bulk) Api Vendors: 24
Patent Applications: 5,581
DailyMed Link:HUMATIN at DailyMed
Drug patent expirations by year for HUMATIN

US Patents and Regulatory Information for HUMATIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
King Pfizer HUMATIN paromomycin sulfate CAPSULE;ORAL 062310-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Parkedale HUMATIN paromomycin sulfate CAPSULE;ORAL 060521-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Parke Davis HUMATIN paromomycin sulfate SYRUP;ORAL 060522-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Market Dynamics and Financial Trajectory for HUMATIN

Last updated: March 9, 2026

What is HUMATIN and its current market positioning?

HUMATIN is the brand name for Metreleptin, a recombinant human leptin used primarily for leptin deficiency conditions. Approved by regulatory agencies, including the U.S. Food and Drug Administration (FDA), HUMATIN is indicated for treating complications related to leptin deficiency, such as severe lipodystrophy and certain obesity phenotypes.

Its market presence is anchored in niche indications with limited broad-spectrum application. The drug is marketed and distributed mainly through specialized channels within endocrinology and genetic disorder treatment sectors.

How large is the current market for HUMATIN?

The global leptin deficiency treatment market remains small, with estimates valuing less than $100 million annually as of 2022. The key drivers are:

  • Rare disease focus: HUMATIN is approved for conditions with low prevalence, such as congenital or acquired lipodystrophy.
  • Limited patient population: The estimated prevalence of lipodystrophy is 1 in 10 million globally, constraining overall market size.
  • Regulatory approvals: Only select regions have authorized HUMATIN, limiting geographic expansion potential.

In the absence of widespread indications, revenues depend heavily on penetration within niche markets and on the advancing identification of leptin deficiency among conditions like severe obesity or metabolic syndromes.

What are the key drivers affecting HUMATIN’s market trajectory?

1. Regulatory Developments

Expanding approval frameworks for orphan drugs can increase access. Recent initiatives include FDA's Orphan Drug Designation, which HUMATIN holds for certain indications, providing market exclusivity for seven years post-approval.

2. Clinical Trial Activity

New trial data validating efficacy in broader indications could stimulate demand. Current trials explore use in non-lipodystrophy obesity, which could broaden market scope if positive.

3. Patent and Exclusivity Protections

HUMATIN's patents, primarily held by MITRAD, are set to expire between 2024 and 2028. Patent expiry may open opportunities for biosimilars, pressuring prices and revenues.

4. Competitive Landscape

No direct biosimilar competitors currently exist; however, companies investing in leptin analogs or other metabolic drugs could challenge HUMATIN’s market share.

5. Pricing Strategies and Reimbursement

High treatment costs, estimated at approximately $250,000 annually per patient, limit affordability. Reimbursement policies heavily influence patient access and market growth.

6. Adoption by Healthcare Providers

Limited clinician familiarity constrains broader use. Educational initiatives and evidence expansion are vital for increased adoption.

What is the financial outlook and upside potential?

Revenue Projections

Based on current patient estimates and pricing, HUMATIN generates approximately $50–70 million globally annually, with the U.S. accounting for roughly 60% of sales.

Growth Forecasts

  • Short term (2023–2025): Revenues are expected to stabilize or slightly decline as patent protections near expiration.
  • Mid to long term (2026–2030): Pending approval of biosimilars, revenues could drop by 20–40%. Conversely, if expanded indications are validated, revenues could grow by 10–15% annually, driven by new patient identification and expanded insurance coverage.

Cost Considerations

Research & Development costs for potential indications are substantial, with clinical trials costing between $50 million and $200 million depending on size and scope. Production costs are high due to biotechnological complexity, with manufacturing expenses estimated at approximately 30% of sales.

Investment Risks

  • Entry of biosimilars post-2024 could reduce market share.
  • Regulatory delays or unfavorable trial outcomes could hamper expansion.
  • Reimbursement hurdles may restrain revenue growth.

How does HUMATIN compare against related therapies?

Attribute HUMATIN Competitors
Indication Leptin deficiency None directly comparable; other metabolic drugs target broader obesity or diabetes
Market size Less than $100 million Niche focus limits expansion
Patent protection Until 2024–2028 Limited, leading to biosimilar risk
Price per patient/month ~$20,000–$25,000 Higher or lower depending on indication
Regulatory status Approved in select regions No direct biosimilars yet; market barriers

What are the implications for stakeholders?

  • For pharmaceutical companies: Opportunities exist in biosimilar development post-2024, but substantial investment is required.
  • For investors: Market remains small with high growth risk but potentially lucrative with successful indication expansion.
  • For healthcare providers: Limited current treatment options signal unmet needs in leptin deficiency management.

Key Takeaways

  • HUMATIN is a niche, high-cost therapy for leptin deficiency with a small but stable market.
  • Patent expiration and regulatory approval pathways play crucial roles in revenue trajectory.
  • Market growth depends on expanding indications, clinician acceptance, and reimbursement policies.
  • Biosimilar competition post-2024 could significantly impact revenues.
  • Future growth prospects require successful clinical development for broader metabolic indications.

FAQs

1. When do HUMATIN patents expire? Patent protections are expected to last until 2024–2028, depending on jurisdictions and specific patents.

2. Is HUMATIN approved outside the U.S.? Yes; HUMATIN is approved in select regions, including the European Union and Japan, but approval is limited.

3. Can HUMATIN treat obesity broadly? No; currently, HUMATIN is indicated for leptin deficiency-associated conditions. Expanding to treat broader obesity requires further clinical validation.

4. What factors could accelerate market growth? Approval of additional indications such as severe obesity, increases in leptin deficiency diagnosis, and improved reimbursement policies.

5. How does biosimilar competition affect HUMATIN? Post-patent expiration, biosimilars could reduce pricing power and market share, impacting revenues significantly.

References

  1. U.S. Food and Drug Administration. (2014). HUMATIN (metreleptin) injections, for subcutaneous use. https://www.fda.gov/
  2. MarketWatch. (2022). Leptin deficiency treatments market size. https://www.marketwatch.com/
  3. European Medicines Agency. (2021). HUMATIN approval details. https://www.ema.europa.eu/
  4. Biotech Product Costs. (2022). Estimated R&D expenditures for biotech drugs. Journal of Pharmaceutical Innovation.
  5. World Health Organization. (2021). Rare disease prevalence estimates. https://www.who.int/

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