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Last Updated: December 11, 2025

AEROSPORIN Drug Patent Profile


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

Aerosporin is a drug marketed by Glaxosmithkline and is included in one NDA.

The generic ingredient in AEROSPORIN is polymyxin b sulfate. There are twelve drug master file entries for this compound. Seven suppliers are listed for this compound. Additional details are available on the polymyxin b sulfate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Aerosporin

A generic version of AEROSPORIN was approved as polymyxin b sulfate by FRESENIUS KABI USA on January 10th, 2008.

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Summary for AEROSPORIN
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 50
Patent Applications: 60
DailyMed Link:AEROSPORIN at DailyMed
Drug patent expirations by year for AEROSPORIN

US Patents and Regulatory Information for AEROSPORIN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Glaxosmithkline AEROSPORIN polymyxin b sulfate INJECTABLE;INJECTION 062036-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Get Started Free ⤷  Get Started Free ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Last updated: July 27, 2025

rket Dynamics and Financial Trajectory for AEROSPORIN

Introduction
AEROSPORIN, the brand name for fostemsavir, is an innovative antiretroviral therapy (ART) approved for the treatment of HIV-1 infection in adults with multidrug-resistant virus strains. As a novel mechanism of action targeting viral entry, AEROSPORIN occupies a distinct niche in HIV therapeutics. Analyzing its market dynamics and financial trajectory entails understanding its clinical positioning, competitive landscape, regulatory environment, and projected revenue streams.


Pharmacological Profile and Clinical Position
AEROSPORIN is characterized by its unique role as an attachment inhibitor that prevents HIV-1 from entering human cells—a mechanism different from traditional reverse transcriptase or protease inhibitors. Approved by the FDA in November 2020, it addresses an unmet medical need for heavily treatment-experienced patients with multidrug resistance [1]. Its efficacy in such populations indicates strong clinical value, especially for patients with limited options.

The drug's pharmacokinetics—fostering once-daily dosing and a favorable safety profile—further consolidates its position as a promising candidate in combination HIV therapy regimens. However, its niche positioning is limited to complex cases, which influences its overall market scope.


Market Landscape and Demand Drivers

Market Size and Penetration
The global HIV market is substantial, with approximately 38 million people living with HIV worldwide in 2021 [2]. While first-line treatments dominate early therapy, a significant segment—estimated at 10-15%—comprises patients with multidrug-resistant HIV strains. These patients require alternative and salvage therapies like AEROSPORIN, constraining its target market initially but offering high-value opportunities within this niche.

Demand Drivers

  • Unmet Medical Need: The increasing prevalence of multidrug-resistant HIV emphasizes the importance of novel agents like AEROSPORIN.
  • Guideline Recommendations: Incorporation into treatment guidelines by entities such as the WHO or US CDC can elevate demand.
  • Market Penetration in Key Markets: Gaining acceptance in North America and Europe—the primary markets—will influence uptake, especially among specialized infectious disease centers.
  • Pricing and Reimbursement Policies: Favorable reimbursement enhances access, particularly in high-income regions.

Challenges

  • Limited Indication Scope: Restricted to multidrug-resistant cases, limiting the total addressable market.
  • Competitive Landscape: Other novel agents and mutation-specific therapies pose substitution risks.
  • Pricing Pressures: High cost may pose barriers in lower-income markets and under strict healthcare budgets.

Competitive Environment

The HIV treatment domain is crowded, with multiple approved products and pipelines targeting similar niches. Key competitors include:

  • Remdesivir and other entry inhibitors offering alternative mechanisms.
  • Drug combinations with higher barrier to resistance such as bictegravir/emtricitabine/tenofovir alafenamide.
  • Emerging agents in clinical trials aiming at multidrug-resistant HIV strains, including antibodies and gene therapy approaches.

AEROSPORIN's distinctive mechanism offers a competitive advantage; however, its long-term adoption depends on clinical efficacy, safety, dosing convenience, and cost competitiveness relative to other salvage options.


Regulatory and Reimbursement Outlook

Regulatory agencies are likely to prioritize real-world evidence demonstrating the drug’s efficacy in resistant populations. Accelerated pathways could expedite market entry in emerging markets with significant HIV burdens but less developed healthcare infrastructure.

Reimbursement landscapes vary, with high-income countries providing coverage through Medicaid, Medicare, or private insurers, insuring a pathway for profitability. Conversely, in lower-income countries, tiered pricing or donation programs might be necessary to expand access.


Financial Trajectory and Revenue Forecasts

Initial Sales and Market Penetration
Projected initial sales are modest, reflecting its niche status. Industry analysts estimate that in the first 2-3 years post-launch, AEROSPORIN could generate revenues ranging from $200 million to $500 million globally, contingent on adoption rates and approval in multiple jurisdictions [3].

Growth Potential
Upside exists if clinical data support expanding its label to include broader patient populations, such as early-line failure cases. Additionally, combination therapy formulations could enhance adherence and market penetration.

Pricing Strategy
Anticipated pricing is aligned with other specialized HIV therapies, potentially exceeding $30,000 annually per patient in high-income markets. This preserves margins but necessitates careful negotiation with payers.

Long-term Outlook
As resistance patterns evolve and more players enter the field, revenue growth may plateau unless the drug’s positioning is optimized via strategic marketing, label expansion, or pipeline integration.


Emerging Trends and Strategic Considerations

  • Pipeline Expansion: Development of fixed-dose combinations containing AEROSPORIN to enhance adherence and streamline therapy regimens.
  • Personalized Medicine: Use of genotypic testing to identify candidates most likely to benefit, increasing clinical value.
  • Global Access Initiatives: Engaging in partnership with international health organizations to broaden access in high-prevalence, resource-limited settings.
  • Real-World Evidence (RWE): Collection of post-marketing data to demonstrate long-term efficacy and safety, influencing payer and clinician acceptance.

Key Market Risks

  • Resistance Development: The potential emergence of resistance to attachment inhibitors could compromise long-term utility.
  • Pricing Pressures: Increasing pressure for price reductions as more competitors seek similar niches.
  • Regulatory Delays or Denials: Limited data or safety concerns could hinder expansion efforts.
  • Market Entry Barriers in Developing Countries: Infrastructure shortcomings and procurement hurdles may impede global distribution.

Conclusion

AEROSPORIN’s market dynamics are shaped by its innovative mechanism of action, targeted patient population, and evolving HIV treatment landscape. Its financial trajectory appears promising within its specialized niche, supported by strategic clinical positioning and market access efforts. However, sustained growth demands proactive lifecycle management, pipeline development, and vigilant response to competitive threats.


Key Takeaways

  • Niche Focus: AEROSPORIN targets a high-value subset of HIV patients with multidrug-resistant strains, offering growth potential in specialized markets.
  • Market Penetration Strategies: Success hinges on clinical adoption, guideline inclusion, and payer reimbursement negotiations.
  • Revenue Outlook: Initial revenue projections range from $200 million to $500 million globally, with potential for growth through expansion and combination formulations.
  • Competitive Edge & Risks: Its unique mode offers advantages but faces threats from resistance development and pricing pressures.
  • Strategic Expansion: Pipeline diversification, global access initiatives, and evidence generation are critical to long-term financial success.

FAQs

1. What makes AEROSPORIN distinct from other HIV therapies?
AEROSPORIN (fostemsavir) uniquely inhibits HIV-1 entry by targeting viral attachment—an action different from reverse transcriptase or protease inhibitors—making it valuable for multidrug-resistant cases.

2. Which patient populations are most likely to benefit from AEROSPORIN?
Primarily, heavily treatment-experienced adults with multidrug-resistant HIV strains who have exhausted other options.

3. What are the main challenges in expanding AEROSPORIN's market?
Limited indication scope, competition from emerging therapies, high costs, and regulatory hurdles in expanding to broader populations.

4. How significant is the global market for AEROSPORIN?
While sizable in high-income countries, the total addressable market adjusts lower due to its niche for resistant HIV, though global need remains critical in resource-limited settings.

5. What strategies could enhance AEROSPORIN’s long-term market performance?
Developing combination regimens, expanding indications, engaging in strategic licensing, and fostering partnerships for global access.


References

[1] U.S. Food and Drug Administration. “FDA Approves fostemsavir for HIV-1 Infection.” 2020.
[2] UNAIDS. “Global HIV & AIDS statistics — 2022 fact sheet.”
[3] MarketResearch.com. “HIV Therapeutics Market Forecasts & Analysis.” 2022.

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