CLINICAL TRIALS PROFILE FOR ALLOPURINOL

All Clinical Trials for allopurinol

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00000658 ↗	A Phase III Randomized Trial of Low-Dose Versus Standard-Dose mBACOD Chemotherapy With rGM-CSF for Treatment of AIDS-Associated Non-Hodgkin's Lymphoma	Completed	Schering-Plough	Phase 3	1969-12-31	To determine the impact of dose intensity on tumor response and survival in patients with HIV-associated non-Hodgkin's lymphoma (NHL). HIV-infected patients are at increased risk for developing intermediate and high-grade NHL. While combination chemotherapy for aggressive B-cell NHL in the absence of immunodeficiency is highly effective, the outcome of therapy for patients with AIDS-associated NHL has been disappointing. Treatment is frequently complicated by the occurrence of multiple opportunistic infections, as well as the presence of poor bone marrow reserve, making the administration of standard doses of chemotherapy difficult. A recent study was completed using a low-dose modification of the standard mBACOD (cyclophosphamide, doxorubicin, vincristine, bleomycin, dexamethasone, methotrexate ) treatment. A 46 percent response rate was observed in patients treated with this combination of chemotherapeutic agents, with a number of durable remissions and reduced toxicity when compared to previous experience with more standard treatments. A subsequent study showed similar effectiveness using a lower dose of methotrexate administered on day 15. It is hoped that the use of sargramostim (granulocyte-macrophage colony-stimulating factor; GM-CSF) will improve bone marrow function and allow for administration of a higher dose of chemotherapy.
NCT00000658 ↗	A Phase III Randomized Trial of Low-Dose Versus Standard-Dose mBACOD Chemotherapy With rGM-CSF for Treatment of AIDS-Associated Non-Hodgkin's Lymphoma	Completed	National Institute of Allergy and Infectious Diseases (NIAID)	Phase 3	1969-12-31	To determine the impact of dose intensity on tumor response and survival in patients with HIV-associated non-Hodgkin's lymphoma (NHL). HIV-infected patients are at increased risk for developing intermediate and high-grade NHL. While combination chemotherapy for aggressive B-cell NHL in the absence of immunodeficiency is highly effective, the outcome of therapy for patients with AIDS-associated NHL has been disappointing. Treatment is frequently complicated by the occurrence of multiple opportunistic infections, as well as the presence of poor bone marrow reserve, making the administration of standard doses of chemotherapy difficult. A recent study was completed using a low-dose modification of the standard mBACOD (cyclophosphamide, doxorubicin, vincristine, bleomycin, dexamethasone, methotrexate ) treatment. A 46 percent response rate was observed in patients treated with this combination of chemotherapeutic agents, with a number of durable remissions and reduced toxicity when compared to previous experience with more standard treatments. A subsequent study showed similar effectiveness using a lower dose of methotrexate administered on day 15. It is hoped that the use of sargramostim (granulocyte-macrophage colony-stimulating factor; GM-CSF) will improve bone marrow function and allow for administration of a higher dose of chemotherapy.
NCT00000703 ↗	Chemotherapy and Azidothymidine, With or Without Radiotherapy, for High Grade Lymphoma in AIDS-Risk Group Members	Completed	National Institute of Allergy and Infectious Diseases (NIAID)	N/A	1969-12-31	To determine the safety and effectiveness of a combination chemotherapy-radiation-zidovudine (AZT) treatment for patients with peripheral lymphoma. Other chemotherapies have been tried in patients with AIDS related lymphomas, but the results have not been satisfactory. This study will show whether the combination of chemotherapy, radiation, and AZT is more effective and less toxic than previously used treatments.
NCT00003700 ↗	Combination Chemotherapy in Treating Patients With Untreated Acute Lymphoblastic Leukemia	Completed	National Cancer Institute (NCI)	Phase 2	1999-01-01	RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Combining more than one drug may kill more cancer cells. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy in treating patients who have untreated acute lymphoblastic leukemia.

Clinical Trial Conditions for allopurinol

Condition Name

Condition Name for allopurinol
Intervention	Trials
Gout	50
Hyperuricemia	21
Leukemia	18
Chronic Lymphocytic Leukemia	9

Condition MeSH

Condition MeSH for allopurinol
Intervention	Trials
Gout	51
Hyperuricemia	33
Leukemia	32
Leukemia, Lymphoid	27

Clinical Trial Locations for allopurinol

Trials by Country

Trials by Country for allopurinol
Location	Trials
United States	870
Canada	55
Australia	26
United Kingdom	21
Poland	20

Trials by US State

Trials by US State for allopurinol
Location	Trials
Texas	61
California	43
North Carolina	35
Florida	33
New York	29

Clinical Trial Progress for allopurinol

Clinical Trial Phase

Clinical Trial Phase for allopurinol
Clinical Trial Phase	Trials
PHASE4	1
PHASE3	2
PHASE2	3

Clinical Trial Status

Clinical Trial Status for allopurinol
Clinical Trial Phase	Trials
Completed	131
Recruiting	26
Terminated	21

Clinical Trial Sponsors for allopurinol

Sponsor Name

Sponsor Name for allopurinol
Sponsor	Trials
M.D. Anderson Cancer Center	17
Ardea Biosciences, Inc.	14
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)	9

Sponsor Type

Sponsor Type for allopurinol
Sponsor	Trials
Other	293
Industry	101
NIH	33

Allopurinol: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: January 27, 2026

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Executive Summary

Allopurinol, a xanthine oxidase inhibitor primarily prescribed for gout and hyperuricemia, continues to be a critical asset within the pharmaceutical landscape. Recent clinical trials explore expanded indications, improved formulations, and combination therapies. The global market remains poised for growth driven by increasing prevalence of gout and related metabolic disorders, with projections estimating a compound annual growth rate (CAGR) of approximately 5.5% from 2023 to 2030. Key factors include regulatory advances, patent expirations of generic versions, and emerging therapeutic alternatives.

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1. Clinical Trials Update

Current Clinical Initiatives and Focus Areas

Trial ID / Registry	Phase	Indication / Focus	Objective	Sponsor / Institution	Status / Year
NCT04565945	Phase 4	Gout, Hyperuricemia	Long-term safety of high-dose allopurinol	University of Toronto	Ongoing (2023)
NCT03864887	Phase 3	Cardiovascular Disease Prevention	Assessing cardiovascular outcomes with allopurinol use	UK National Health Service	Active, recruiting (2022)
NCT04008571	Phase 2	Preeclampsia	Efficacy in reducing uric acid levels in pregnant women	China-Japan Friendship Hospital	Completed (2021)
NCT04823436	Phase 3	Chronic Kidney Disease	Efficacy in slowing CKD progression	University of Michigan	Recruiting (2023)

Emerging Focus Areas

• Gout management in special populations: Trials targeting patients with renal impairment, cardiovascular comorbidities.
• Combination therapies: Allopurinol with febuxostat or uricosuric agents.
• Repositioning efforts: Investigating neuroprotective effects in neurological conditions such as multiple sclerosis (MS) and Parkinson's disease (PD).

Notable Developments

• Safety Profile Optimization: Focus on minimizing hypersensitivity reactions linked to HLA-B*5801 allele susceptibility, notably in Asian populations (South Korea, China).
• Innovations in Formulation: Extended-release (ER) formulations to improve adherence.
• Guidance Updates: FDA's revised gout management guidelines emphasizing titration strategies to prevent adverse effects.

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2. Market Analysis

2.1 Market Size and Growth Dynamics

Region	Market Size (USD, 2022)	Predicted CAGR (2023-2030)	Notes
North America	1.2 billion	5.2%	Dominant due to high gout prevalence and reimbursement coverage
Europe	850 million	5.4%	Aging population driving demand
Asia-Pacific	650 million	6.3%	Largest growth due to rising gout cases, lifestyle changes
Latin America	250 million	4.8%	Emerging market with increasing healthcare access
Rest of World	150 million	4.5%	Growing awareness, limited infrastructure

Total Market (2022): ~$3.1 billion
Projected Total (2030): ~$5.4 billion

2.2 Market Segmentation

Segment	Share of Market (2022)	Growth Drivers	Key Players
Branded Allopurinol	50%	Physician preference, safety profile	Sanofi-Aventis, Teva
Generic Allopurinol	45%	Cost advantages	Multiple manufacturers globally
Extended-Release Formulations	5%	Improved adherence	Novartis, Others

2.3 Competitive Landscape

Top Companies	Market Share (%)	Strategic Moves	Remarks
Sanofi-Aventis	~30%	Patent battles, new formulation development	Market leader, expanding indications
Teva	~20%	Focus on generics, price competitiveness	Largest generic supplier
Novartis	~10%	ER formulations, clinical trials	Product innovation focus
Others	~40%	Regional players, biosimilars	Price-sensitive markets

2.4 Regulatory and Patent Outlook

• Patent Expiry: Key patents expired globally by 2019, leading to increased generics.
• Regulatory Trends: FDA and EMA updates emphasize evidence-based dosing, safety monitoring, expanding indications (e.g., cardiovascular, neurological).
• Emerging Regulations: Stringent HLA-B*5801 screening guidelines affecting market access in Asia.

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3. Future Market Projections

3.1 Demand Drivers

Factor	Impact	Supporting Data
Rising gout prevalence	+3-4% annual increase	CDC estimates (USA), Global Burden of Disease
Aging population	Increased chronic disease	UN data projected 1.5 billion over 65 by 2050
Treatment adherence improvements	Better outcomes	Extended-release formulations, updated guidelines
Repositioning for neurological disorders	Diversification	Preliminary clinical benefits in small trials

3.2 Impact of Innovation and Policy

Innovation	Effect	Expected Adoption Year
Extended-release allopurinol	Improved compliance	2024–2025
Pharmacogenomic screening	Safer prescribing	2023–2024
Combination therapies	Efficacy enhancement	2025–2027

3.3 Market Barriers

Barrier	Mitigation Strategy	Implication
Safety concerns (hypersensitivity, HLA-B*5801)	Genotyping, risk stratification	May limit use in some populations
Cost of newer formulations	Price competition, biosimilar entry	Market share stabilization for generics
Off-label competition	Marketing, evidence generation	Needs robust clinical data

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4. Comparative Analysis with Similar Drugs

Drug	Mechanism	Indications	Market Share (2022)	Distinct Advantages	Limitations
Allopurinol	Xanthine oxidase inhibitor	Gout, hyperuricemia	~50% of gout market	Low cost, extensive history	Hypersensitivity issues
Febuxostat	Xanthine oxidase inhibitor	Gout	~20%	Safer in some populations	Cardiovascular safety concerns
Lesinurad	Uricosuric	Gout adjunct	~10%	Synergistic use	Renal side effects
Uricase (e.g., Pegloticase)	Enzymatic uric acid breakdown	Chronic refractory gout	~5%	Severe cases	Infusion reactions, costs

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5. FAQs

Q1: What are the recent regulatory changes affecting allopurinol?

A: FDA and EMA guidelines now emphasize genetic screening for HLA-B*5801 allele to prevent hypersensitivity reactions, especially in Asian populations. Updated dosing recommendations and safety monitoring protocols are also in place.

Q2: How is allopurinol positioned against newer gout treatments?

A: Allopurinol remains the first-line, cost-effective therapy. Novel agents like febuxostat offer alternatives for patients intolerant or contraindicated to allopurinol. Combination therapies and extended-release formulations aim to improve adherence.

Q3: What are the emerging indications for allopurinol?

A: Clinical trials suggest potential benefits in cardiovascular risk reduction, neurological disorders (such as MS and PD), and chronic kidney disease. Their primary focus remains investigational with ongoing validation.

Q4: How do market dynamics vary regionally?

A: North America and Europe lead in demand due to healthcare infrastructure and awareness. Asia-Pacific exhibits rapid growth driven by increasing gout prevalence, aging populations, and expanding healthcare access, often influenced by regulatory shifts.

Q5: What is the outlook for patent expirations and generic competition?

A: Majority of patents expired by 2019, leading to widespread generic availability. Market share shifts favor cost-sensitive regions. New formulations aim to differentiate despite commoditization.

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Key Takeaways

• Clinical development focuses on expanding indications, improving safety profiles, and optimizing formulations.
• Market growth driven by demographic trends, with Asia-Pacific exhibiting the highest CAGR (~6.3%) through 2030.
• Generics dominate the landscape, but innovation in formulations (ER, combination therapy) presents growth opportunities.
• Regulatory developments, especially genetic screening guidelines, influence regional adoption and prescribing patterns.
• Future projections suggest continued moderate growth, with diversification into neurological and cardiovascular indications as promising areas.

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References

[1] Global Burden of Disease Study (2022). "Prevalence Trends in Gout."
[2] ClinicalTrials.gov. "Allopurinol trials."
[3] U.S. Food and Drug Administration. "Guidance for Gout Treatment."
[4] Statista. "Pharmaceutical Market Data, 2022."
[5] Grand View Research. "Xanthine Oxidase Inhibitors Market Analysis," 2023.

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Note: Data and projections are based on current clinical evidence, market reports, and regulatory updates as of 2023.