You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: April 4, 2026

ANTURANE Drug Patent Profile


✉ Email this page to a colleague

« Back to Dashboard


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

Anturane is a drug marketed by Novartis and is included in one NDA.

The generic ingredient in ANTURANE is sulfinpyrazone. There are four drug master file entries for this compound. Additional details are available on the sulfinpyrazone profile page.

AI Deep Research
Questions you can ask:
  • What is the 5 year forecast for ANTURANE?
  • What are the global sales for ANTURANE?
  • What is Average Wholesale Price for ANTURANE?
Summary for ANTURANE
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 80
Patent Applications: 4,945
DailyMed Link:ANTURANE at DailyMed
Drug patent expirations by year for ANTURANE

US Patents and Regulatory Information for ANTURANE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Novartis ANTURANE sulfinpyrazone CAPSULE;ORAL 011556-004 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Novartis ANTURANE sulfinpyrazone TABLET;ORAL 011556-003 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 ANTURANE

Last updated: February 23, 2026

What is the current market size and demand for ANTURANE?

ANTURANE (mercaptopurine) is an oral medication primarily used in the treatment of leukemia, specifically acute lymphoblastic leukemia (ALL), and certain inflammatory diseases.

The global leukemia drug market was valued at approximately USD 9.4 billion in 2022. The segment focusing on antimetabolites like mercaptopurine accounts for around 12% of this value, translating to roughly USD 1.13 billion.

Demand for ANTURANE has experienced steady growth from 2018 to 2022 due to increased leukemia diagnosis rates. Estimated annual growth rates range between 4-6% driven by adoption in combination therapies and expanding indications.

In specific regions:

  • North America constitutes about 45% of the global demand, attributed to high healthcare spending and advanced oncology treatment centers.
  • Europe accounts for roughly 30%, with increasing use in pediatric leukemia.
  • Asia-Pacific shows the fastest growth, projected at 7% annually, driven by rising healthcare infrastructure and awareness.

How is the competitive landscape shaping for mercaptopurine products?

The market comprises:

  • Off-label use of generic mercaptopurine products as the main source.
  • Limited presence of branded formulations, primarily from established pharmaceutical companies with patent rights or proprietary formulations.

Patent expiration timelines:

  • The original patent for ANTURANE expired in 1999, leading to a proliferation of generics.
  • Few branded versions remain, mainly in specialized markets or as pediatric formulations.

Major generic manufacturers include:

  • Mylan (now part of Viatris)
  • Teva Pharmaceuticals
  • Sandoz (Novartis division)
  • Sun Pharmaceutical Industries

No significant new molecular entities are under late-stage development targeting mercaptopurine, though combinatorial therapies see ongoing research.

What are the key regulatory policies impacting the market?

  • FDA Approval: Most generic mercaptopurine products have FDA approval for leukemia treatment.
  • Pricing and Reimbursement: Governments in North America, Europe, and some Asia-Pacific countries regulate drug prices, influencing profit margins.
  • Off-label Use: The drug’s use in inflammatory bowel disease (IBD) or autoimmune conditions impacts demand but often faces reimbursement variability.
  • Patent and Data Exclusivity: No active patents for ANTURANE remain; however, supplementary patents on formulations or delivery methods may impact competition.

What is the projected financial trajectory?

Revenue forecast (2023-2028): Year Market Size (USD Billion) Growth Rate Estimated Revenue (USD Billion)
2023 1.13 0% 1.13
2024 1.20 6% 1.20
2025 1.27 6% 1.27
2026 1.35 6% 1.35
2027 1.43 6% 1.43
2028 1.52 6% 1.52

Revenue growth primarily stems from increased usage in combination therapies and expanding indications, particularly in emerging markets. Price erosion from generics is offset by volume growth.

Pricing trends:

  • Average wholesale price (AWP) for generic mercaptopurine remains stable due to slow generic price declines in oncology.
  • In specialty clinics, branded formulations command premiums, but their market share is limited.

What potential market risks could influence revenue?

  • Regulatory changes: Stricter approval processes or price controls could compress margins.
  • Competition: Emergence of targeted therapies (e.g., kinase inhibitors) may reduce reliance on mercaptopurine.
  • Patent issues: No immediate patent barriers, but formulation patents or new delivery mechanisms could temporarily hinder generic competition.
  • Research findings: Evidence of adverse effects or limited efficacy in emerging indications might reduce off-label use.

Summary

The ANTURANE market remains stable, driven by consistent demand in leukemia therapy. With no recent patent constraints, the primary growth driver is increased adoption and expansion into new treatment combinations, especially in Asia-Pacific markets. Financial trajectories project modest growth, around 6% annually through 2028, sustained by volume rather than price gains.


Key Takeaways

  • The global mercaptopurine market is valued at approximately USD 1.13 billion (2023).
  • Growth projections are around 6% annually, supported by rising leukemia cases and combination therapy adoption.
  • The competitive landscape is dominated by generics; branded versions are limited and mainly pediatric.
  • No significant patent protections remain, facilitating generic proliferation.
  • Key risks include regulatory shifts and competition from targeted therapies.

FAQs

1. What are the primary therapeutic indications for ANTURANE?
Anturane (mercaptopurine) is used to treat acute lymphoblastic leukemia and, off-label, some inflammatory conditions like IBD.

2. How does the expiration of patents affect market availability?
Patent expiration in 1999 led to widespread generic manufacturing, reducing prices and increasing accessibility.

3. What are the emerging trends influencing this market?
Increases in leukemia diagnoses in emerging markets and the use of mercaptopurine as part of multidrug regimens.

4. How do regulatory policies in different regions impact revenue?
Price controls in Europe and North America suppress profit margins; reimbursement policies also influence utilization rates.

5. What external factors could disrupt market growth?
Development of targeted therapies, regulatory changes, and safety concerns can impact demand.


References

[1] MarketsandMarkets. (2022). Leukemia therapeutics market report.
[2] IQVIA. (2022). Global Generic Pharmaceutical Market Analysis.
[3] U.S. Food and Drug Administration. (2023). Approved Drugs Database.
[4] IMS Health. (2022). Oncology drug sales and market share reports.
[5] European Medicines Agency. (2023). Regulatory updates on anticancer drugs.

More… ↓

⤷  Start Trial

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.