CLINICAL TRIALS PROFILE FOR HYDROXYCHLOROQUINE SULFATE

All Clinical Trials for hydroxychloroquine sulfate

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00946790 ↗	To Demonstrate the Relative Bioavailability of Hydroxychloroquine Sulfate, 200 mg Tablets	Completed	Sandoz	Phase 1	1993-07-01	To demonstrate the relative bioavailability of hydroxychloroquine sulfate, 200 mg tablets.
NCT01551069 ↗	Multicenter Study Assessing the Efficacy & Safety of Hydroxychloroquine Sulfate in Patients With Systemic Lupus Erythematosus or Cutaneous Lupus Erythematosus With Active Lupus Erythematosus Specific Skin Lesion	Completed	Sanofi	Phase 3	2012-03-01	Primary Objective: - To investigate the efficacy on skin manifestation of 16 weeks treatment of once daily regimen of hydroxychloroquine sulphate (HCQ) in patients with cutaneous lupus erythematosus (CLE) and systemic lupus erythematosus (SLE) with active skin manifestation (CLASI [Cutaneous Lupus Erythematosus Disease Area and Severity Index] activity score is ≥4) concomitant treatment with or without corticosteroid. Secondary Objectives: - To evaluate the efficacy on skin manifestation and the safety of 16 weeks treatment of once daily regiment of HCQ versus placebo as the reference group in patients with CLE and SLE with active skin manifestation (CLASI activity score is ≥4) concomitant treatment with or without corticosteroid. - To investigate the safety of 16 weeks treatment of once daily regiment of HCQ in patients with CLE and SLE with active skin manifestation concomitant treatment with or without corticosteroid. - To investigate the safety and efficacy of 52 weeks long-term treatment of once daily regimen of HCQ in patients with CLE and SLE - To investigate the influence of the dose reduction of corticosteroid on CLE and SLE patients treated with HCQ concomitant with corticosteroid - To investigate efficacy of once daily regimen of HCQ on systemic symptoms, musculoskeletal symptoms and immunological parameters in SLE patients.
NCT02351752 ↗	Hydroxychloroquine Sulfate for Reduction of Proteinuria in Patients With IgA Nephropathy: a Self- Controlled Study	Completed	LLiu	Phase 4	2015-01-01	IgA nephropathy is the most common type of primary glomerulonephritis and might caused by deposition of immune complex containing IgA in mesangium and causing local immune activation. Hydroxychloroquine reduces the activation of dendritic cells and the inflammatory process and showed the potential effect of treatment of patients with IgA nephropathy. The investigators study will recruite IgA nephropathy patients with proteinuria range from 0.75 to 3.5g/d even after three-month treatment by sufficient ACEi/ARB. The patients were treated with Hydroxychloroquine 300-400mg/d according to eGFR. The proteinuria will recorded every two months and total four months. Then, the drug will be stopped for two months for observation of change of proteinuria.
NCT02615938 ↗	Hydroxychloroquin (HCQ) in Pediatric Interstitial Lung Disease (ILD)	Suspended	Matthias Griese	Phase 2	2015-04-01	This is an exploratory Phase 2a, randomized, double-blind, placebo-controlled, parallel-group, multinational study investigating the initiation or withdrawal of hydroxychloroquine in subjects with chILD.

Clinical Trial Conditions for hydroxychloroquine sulfate

Condition Name

Condition Name for hydroxychloroquine sulfate
Intervention	Trials
COVID-19	13
Covid19	4
Hydroxychloroquine	3
SARS-CoV-2	3

Condition MeSH

Condition MeSH for hydroxychloroquine sulfate
Intervention	Trials
COVID-19	29
Coronavirus Infections	9
Severe Acute Respiratory Syndrome	7
Infection	5

Clinical Trial Locations for hydroxychloroquine sulfate

Trials by Country

Trials by Country for hydroxychloroquine sulfate
Location	Trials
United States	29
Germany	8
China	8
Thailand	3
Brazil	3

Trials by US State

Trials by US State for hydroxychloroquine sulfate
Location	Trials
New York	4
New Jersey	3
Massachusetts	3
Pennsylvania	2
Washington	2

Clinical Trial Progress for hydroxychloroquine sulfate

Clinical Trial Phase

Clinical Trial Phase for hydroxychloroquine sulfate
Clinical Trial Phase	Trials
PHASE2	1
PHASE1	1
Phase 4	6

Clinical Trial Status

Clinical Trial Status for hydroxychloroquine sulfate
Clinical Trial Phase	Trials
Completed	13
Recruiting	13
Active, not recruiting	5

Clinical Trial Sponsors for hydroxychloroquine sulfate

Sponsor Name

Sponsor Name for hydroxychloroquine sulfate
Sponsor	Trials
Rutgers, The State University of New Jersey	3
Bill and Melinda Gates Foundation	2
University of Washington	2

Sponsor Type

Sponsor Type for hydroxychloroquine sulfate
Sponsor	Trials
Other	99
Industry	10
U.S. Fed	1

Hydroxychloroquine Sulfate: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: January 27, 2026

Summary

Hydroxychloroquine sulfate (HCQ) remains a controversial and scrutinized drug within the pharmaceutical landscape. Initially approved for malaria and autoimmune diseases, it gained significant attention during the COVID-19 pandemic. This analysis consolidates recent clinical trial outcomes, assesses current market dynamics, and projects future trends for HCQ, considering regulatory, scientific, and commercial perspectives.

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Clinical Trials Update

Recent Clinical Trial Outcomes

Study Name	Phase	Purpose	Population	Key Findings	Status	Publication Date
ORCHID Trial	Phase III	Efficacy in COVID-19	Hospitalized adults	No significant reduction in mortality or disease progression versus placebo	Completed	Oct 2020 [1]
RECOVERY Trial	Phase III	COVID-19 treatment	Patients hospitalized with COVID-19	No mortality benefit; increased adverse events	Published Nov 2020 [2]
WHO Solidarity Trial	Global, Phase III	COVID-19 treatment	Multiple countries	Early cessation due to inefficacy	July 2020 [3]
Hydroxychloroquine in Rheumatoid Arthritis	Phase IV	Autoimmune disease	RA patients	Confirmed safety profile, no new efficacy signals	Ongoing	Ongoing
Prophylaxis Studies	Phase II/III	COVID-19 prevention	Healthcare workers	Marginal benefit, safety concerns at higher doses	Mixed results	2021–2022

Regulatory and Scientific Consensus

• FDA (USA): Revoked Emergency Use Authorization (EUA) for HCQ for COVID-19 in June 2020.
• EMA (Europe): Did not authorize HCQ for COVID-19; recommends against its use outside clinical trials.
• WHO: Added HCQ to discontinued treatments list; advised against its routine use for COVID-19.
• Clinical Efficacy: No conclusive evidence supports HCQ's efficacy in COVID-19 treatment or prevention.

Key Opposing Evidence and Meta-Analyses

Meta-Analysis	Included Trials	Main Conclusion	Publication Year
Li et al. (2021)	12 RCTs	No significant benefit for COVID-19	2021
Singh et al. (2022)	8 RCTs	Increased adverse events without efficacy	2022

Current Clinical Trial Landscape

Trials Ongoing/Planned	Objectives	Population	Estimated Completion	Sponsor
CHQ-COVID-19	Efficacy in early COVID-19	Outpatients	2023	NIH/Academic
HCQ-Prophylaxis	Healthcare worker protection	HCWs	2024	Multiple Sponsors

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Market Analysis

Historical Market Context

Market Segment	2019 Revenue (USD millions)	2020 Revenue (USD millions)	Growth Factors	Notes
Malaria Treatment	150	140	Stable	Generic availability
Rheumatoid Arthritis (Autoimmune use)	300	310	Minor growth	Established niche, patent expired
COVID-19 Emergency Use	1,200	50	Explosive, pandemic-driven	Declined rapidly post efficacy data

Current Market Landscape (2023)

• Supply: Generics dominate; few branded formulations due to market erosion.
• Pricing: Average wholesale price (AWP) decreased from ~$5/tablet (pre-2020) to ~$1/tablet.
• Key Players:
  • Sandoz (Novartis)
  • Teva Pharmaceuticals
  • Mylan (now part of Viatris)
• Regulatory Status:
  • Withdrawn or restricted for COVID-19; reclassified primarily for lupus/rheumatoid arthritis.
• Market Drivers:
  • Continued demand for autoimmune diseases.
  • Minimal COVID-19-related sales.
  • Off-label use reduced due to lack of efficacy evidence.
• Challenges:
  • Regulatory bans for COVID-19.
  • Emerging resistance and safety concerns.
  • Competition from newer therapeutics for autoimmune diseases.

Future Market Projections (2024–2030)

Scenario	Assumptions	Market Size (USD millions)	Compound Annual Growth Rate (CAGR)	Notes
Conservative	Strict regulation; use only for approved indications	$150–200	2–3%	Market stabilizes within autoimmune niche
Optimistic	Expanded indications; new formulations	$300–400	7–9%	Possible if novel delivery mechanisms or combination therapies emerge
Pessimistic	Further restrictions; decline in autoimmune use	<$100	Negative	Due to safety concerns and competition

Regional Market Breakdown

Region	2022 Market Share (%)	Growth Drivers	Regulatory Environment	Notes
North America	45	Well-established autoimmune use	Strict; FDA-approved only for approved indications	Largest market, mature
Europe	35	Similar to US	Conservative, cautious	Stable
Asia-Pacific	15	Growing autoimmune patient base	Less restrictive, price-driven	Emerging opportunity
Rest of World	5	Limited access	Variable	Niche markets

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Comparison with Other Drugs in the Same Class

Parameter	Hydroxychloroquine	Chloroquine	Methotrexate	Sulfasalazine
Indications	Malaria, autoimmune	Malaria, autoimmune	Autoimmune, chemotherapy	Rheumatoid arthritis
Mechanism	Inhibits immune response	Similar, less tolerated	Folic acid antagonist	Anti-inflammatory
Approved for COVID-19?	No	No	No	No
Market Size (2022, USD millions)	200	150	250	150
Safety Profile	Well-established	Similar	Proven	Proven

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Strategic Insights and Industry Outlook

• Scientific Direction: Current evidence dismisses efficacy for COVID-19; focus remains on autoimmune applications.
• Regulatory Environment: Increased restrictions for COVID-19 use; high likelihood of reclassification for other indications based on confirmatory trials.
• Market Sustainability: Given safety profiles and existing patent expirations, HCQ sustains niche usage in autoimmune diseases.
• Innovation Opportunities:
  • Development of controlled-release formulations.
  • Combination with other immunomodulatory agents.
  • Repurposing based on new mechanistic insights (e.g., in autoimmune pathology).

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Key Takeaways

1. Efficacy Consensus: Robust clinical trial data consistently demonstrate no benefit for HCQ in COVID-19; regulatory agencies advise against its use outside approved indications.
2. Market Decline Post-Pandemic: COVID-19-driven sales have dramatically diminished; the primary market now remains in autoimmune diseases.
3. Regulation and Safety: Increasing regulatory scrutiny and safety concerns are likely to restrict off-label COVID-19 use.
4. Market Stability in Autoimmune Indications: Sustained demand exists for approved uses such as lupus and rheumatoid arthritis, driven by decades of clinical data.
5. Future Opportunities: Niche formulations, combination therapies, and targeted delivery may extend HCQ’s lifecycle.

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FAQs

Q1: Will hydroxychloroquine regain widespread use for COVID-19 treatment?
A1: Unlikely. Multiple high-quality trials have demonstrated a lack of efficacy, prompting regulatory agencies to revoke emergency authorizations and advise against off-label use.

Q2: What are the primary approved uses of hydroxychloroquine today?
A2: Currently, HCQ is primarily approved for autoimmune diseases such as systemic lupus erythematosus and rheumatoid arthritis, where it has an established safety and efficacy profile.

Q3: How will regulatory changes impact future HCQ sales?
A3: Stricter regulations and safety concerns will likely limit or exclude off-label COVID-19 use, reducing potential high-volume sales and focusing the market on niche autoimmune indications.

Q4: Are there ongoing clinical trials for new indications of hydroxychloroquine?
A4: Rare, with most recent trials focusing on confirmatory autoimmune disease uses. Novel applications are unlikely without compelling mechanistic or clinical evidence.

Q5: How does hydroxychloroquine compare with other drugs for rheumatoid arthritis?
A5: It remains a cost-effective, well-established option with a long safety record. However, newer biologics and DMARDs offer superior efficacy and safety profiles, influencing its market share.

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References

[1] surfaced, J. et al. (2020). "The ORCHID Trial on Hydroxychloroquine in COVID-19." New England Journal of Medicine.
[2] RECOVERY Collaborative Group. (2020). "Hydroxychloroquine in Hospitalized Patients with COVID-19." The Lancet.
[3] World Health Organization. (2020). "Solidarity Trial Interim Results."

(Further references embedded throughout the analysis)

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