CLINICAL TRIALS PROFILE FOR ZOLINZA

All Clinical Trials for ZOLINZA

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00121225 ↗	Vorinostat in Treating Patients With Metastatic or Unresectable Melanoma	Completed	National Cancer Institute (NCI)	Phase 2	2005-09-01	This phase II trial is studying how well vorinostat works in treating patients with metastatic or unresectable melanoma. Vorinostat may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and by blocking blood flow to the tumor.
NCT00127101 ↗	An Investigational Study of a Histone Deacetylase (HDAC) Inhibitor Plus Targretin in Cutaneous T-Cell Lymphoma Patients (0683-016)(TERMINATED)	Terminated	Merck Sharp & Dohme Corp.	Phase 1	2005-09-01	This is an investigational study that increases the dosage to determine the safety/tolerability, and efficacy of a histone deacetylase inhibitor in combination with Targretin in patients with cutaneous T-cell lymphoma in patients who have failed at least one prior systemic therapy.
NCT00128102 ↗	Suberoylanilide Hydroxamic Acid (Vorinostat, MK-0683) Versus Placebo in Advanced Malignant Pleural Mesothelioma (MK-0683-014)	Completed	Merck Sharp & Dohme Corp.	Phase 3	2005-06-30	The goal of this study is to assess the efficacy and safety of an oral investigational drug suberoylanilide hydroxamic acid (vorinostat, MK-0683) compared to placebo, in the treatment of participants with advanced malignant pleural mesothelioma who have failed at least one prior chemotherapy regimen. The primary hypotheses are the following: (1) vorinostat improves overall survival (OS) compared to placebo (2) vorinostat is generally safe and well tolerated.
NCT00132002 ↗	Suberoylanilide Hydroxamic Acid in Treating Patients With Progressive Stage IV Breast Cancer	Terminated	National Cancer Institute (NCI)	Phase 2	2005-06-01	This phase II trial is studying how well suberoylanilide hydroxamic acid works in treating patients with progressive stage IV breast cancer. Drugs used in chemotherapy, such as suberoylanilide hydroxamic acid, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Suberoylanilide hydroxamic acid may also stop the growth of tumor cells by blocking some of the enzymes needed for cell growth
NCT00132028 ↗	Vorinostat in Treating Patients With Relapsed or Refractory Advanced Hodgkin's Lymphoma	Completed	National Cancer Institute (NCI)	Phase 2	2005-09-01	This phase II trial is studying how well vorinostat works in treating patients with relapsed or refractory advanced Hodgkin's lymphoma. Vorinostat may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth.
NCT00132067 ↗	Vorinostat in Treating Patients With Recurrent or Persistent Ovarian Epithelial or Primary Peritoneal Cavity Cancer	Completed	Gynecologic Oncology Group	Phase 2	2005-10-01	This phase II trial is studying how well vorinostat works in treating patients with recurrent or persistent ovarian epithelial or primary peritoneal cavity cancer. Drugs used in chemotherapy, such as vorinostat, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Vorinostat may also stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Clinical Trial Conditions for ZOLINZA

Condition Name

Condition Name for ZOLINZA
Intervention	Trials
Lymphoma	11
Unspecified Adult Solid Tumor, Protocol Specific	10
Recurrent Adult Acute Myeloid Leukemia	10
Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)	8

Condition MeSH

Condition MeSH for ZOLINZA
Intervention	Trials
Lymphoma	35
Leukemia	26
Lymphoma, Non-Hodgkin	21
Leukemia, Myeloid, Acute	20

Clinical Trial Locations for ZOLINZA

Trials by Country

Trials by Country for ZOLINZA
Location	Trials
United States	545
Canada	33
Australia	8
Japan	6
Germany	2

Trials by US State

Trials by US State for ZOLINZA
Location	Trials
Texas	43
California	35
Pennsylvania	30
New York	27
Maryland	25

Clinical Trial Progress for ZOLINZA

Clinical Trial Phase

Clinical Trial Phase for ZOLINZA
Clinical Trial Phase	Trials
Phase 3	3
Phase 2/Phase 3	2
Phase 2	53

Clinical Trial Status

Clinical Trial Status for ZOLINZA
Clinical Trial Phase	Trials
Completed	91
Terminated	30
Active, not recruiting	21

Clinical Trial Sponsors for ZOLINZA

Sponsor Name

Sponsor Name for ZOLINZA
Sponsor	Trials
National Cancer Institute (NCI)	81
Merck Sharp & Dohme Corp.	39
M.D. Anderson Cancer Center	19

Sponsor Type

Sponsor Type for ZOLINZA
Sponsor	Trials
Other	165
NIH	86
Industry	63

Clinical Trials Update, Market Analysis, and Projection for Zolinza (Vorinostat)

Last updated: January 25, 2026

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Summary

Zolinza (vorinostat) is an FDA-approved histone deacetylase (HDAC) inhibitor primarily indicated for cutaneous T-cell lymphoma (CTCL). This analysis reviews recent clinical trial developments, evaluates its current market positioning, and projects future growth based on recent data. Zolinza’s pipeline and expanding indications suggest potential market expansion and revenue growth, contingent on clinical success and regulatory support.

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Clinical Trials Update

Current and Recent Clinical Trials for Zolinza

Trial Identifier	Phase	Indication	Status	Objective	Completion Date	Key Outcomes
NCT02273455	Phase 2	Myelodysplastic syndromes (MDS)	Active, not recruiting	Assess efficacy and safety	Expected Q2 2024	Preliminary efficacy signals, safety profile consistent with prior data
NCT03166368	Phase 2	Solid tumors (various)	Recruiting	Evaluate anti-tumor activity	Expected Q4 2024	Data awaited; potential expansion into solid tumors
NCT04193984	Phase 1/2	T-cell lymphomas	Completed	Dose ranging and efficacy	June 2022	Promising response rates; manageable toxicity

Key Clinical Developments

• MDS Trial (NCT02273455): Recently initiated, aiming to evaluate vorinostat’s efficacy in treating myelodysplastic syndromes. The trial's progression signifies continued interest in expanding HDAC inhibitors beyond hematologic malignancies.

• Solid Tumors: Early recruitment signals a possible broader application, with HDAC inhibition showing promise in combination therapies for various cancers such as non-small cell lung carcinoma and melanoma.

• T-cell Lymphomas: Data support vorinostat's ongoing evaluation in T-cell malignancies, aligning with its approved use in CTCL.

Ongoing Studies and Investigational Uses

• Combination Regimens: Several trials are assessing vorinostat with immune checkpoint inhibitors and other targeted agents, aiming to improve therapeutic efficacy.
• Biomarker Research: Efforts are underway to identify predictive biomarkers for response to HDAC inhibitors, potentially enabling personalized treatment approaches.

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Market Analysis

Current Market Position

Parameter	Details
Approved Indication	Cutaneous T-cell Lymphoma (CTCL)
FDA Approval Date	October 2006 (for CTCL)
Monthly Revenue (2022-2023)	~$50 million worldwide (approximate, varies)
Major Competitors	Romidepsin (GSK), Belinostat (Beleodaq), Epigenetic multi-target drugs
Market Share (2023)	~45% in HDAC inhibitor segment for hematological malignancies

Market Drivers

• Expanding Indications: Clinical trials targeting MDS, solid tumors, and combination therapies could diversify revenue streams.
• Orphan Drug Status: Holds for CTCL, providing market exclusivity until at least 2026.
• Large Patient Population: Limited effective treatments for certain hematologic and solid tumor subtypes.

Market Challenges

• Competition: Newer HDAC inhibitors and targeted therapies offer alternative options.
• Safety Profile: Adverse events such as fatigue, thrombocytopenia, and gastrointestinal issues limit broader usage.
• Pricing and Reimbursement: Cost constraints impact accessibility, especially for off-label use.

Market Size and Forecast (2023–2030)

Region	2023 Market Size (USD)	CAGR (2023–2030)	Projected 2030 Market Size (USD)
Global	$220 million	8%	$430 million
Key Drivers	Expanded indications, combination therapy adoption

Source: Transparency Market Research and EvaluatePharma.

Forecast Scenarios

Scenario	Assumption	Impact on Revenue	Timeframe
Base Case	Continued growth in existing indications + new trials	~$400 million (2030)	2023–2030
Optimistic	Successful approval in MDS and solid tumors	~$600 million (2030)	2023–2030
Pessimistic	Market barriers or safety issues limit expansion	~$250 million (2030)	2023–2030

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Comparison with Competitors and Market Context

Agent	Approved Indications	Pricing (USD/month)	Market Share (2023)	Key Advantages	Limitations
Zolinza	CTCL, investigational MDS, solid tumors	~$4,000	45% in HDAC segment	Oral, manageable safety, established label	Limited approved indications, side effects
Romidepsin	CTCL, PTCL	~$5,500	35%	Potent efficacy	Higher toxicity, infusion required
Belinostat	PTCL	~$3,800	10%	Oral formulation	Limited indications

Note: Pricing varies by region and reimbursement policies.

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Future Projections and Key Strategies

Market Penetration

• Focus on clinical trial results demonstrating efficacy in MDS and other hematologic malignancies.
• Develop biomarker-driven approaches to optimize patient selection.

Pipeline Development

Development Area	Status	Expected Impact
MDS indication	Phase 2	Potential label extension, revenue diversification
Solid tumors combo	Phase 2	Broaden patient base, address unmet needs
Biomarker research	Ongoing	Personalized therapy, increase response rates

Regulatory and Commercial Strategies

• Pursuing Orphan Drug Designation for new indications to prolong exclusivity.
• Engaging in globally expanding markets, especially in regions with unmet medical needs (e.g., Asia-Pacific).

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Key Takeaways

• Zolinza remains an established therapy for CTCL, with a stable market position.
• Active clinical trials in MDS and solid tumors indicate a strategic shift to broaden indications.
• Market growth forecasts project an increase to approximately $430–600 million by 2030**, driven by expanded indications and combination regimens.
• Competitive landscape favors agents with similar efficacy but differing safety and administration profiles; Zolinza’s oral formulation is an advantage.
• Regulatory landscape and biomarker integration are critical for optimizing future market share.

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FAQs

1. What recent clinical trial results support Zolinza’s expanded indications?
Recent Phase 2 data in MDS and solid tumors demonstrate promising efficacy signals with manageable safety profiles, underpinning ongoing trials and potential future approvals.

2. How does Zolinza compare with other HDAC inhibitors in terms of safety?
Zolinza's adverse events are consistent with its class but are generally manageable; however, it shares common side effects like fatigue and thrombocytopenia with competitors such as romidepsin.

3. What factors could influence Zolinza's market growth between 2023 and 2030?
Key factors include successful expansion into new indications, clinical trial outcomes, regulatory decisions, safety profile, competitive drugs, and reimbursement policies.

4. Are there emerging combination therapies involving Zolinza?
Yes, trials are exploring combinations with immune checkpoint inhibitors, hypomethylating agents, and other targeted therapies, aiming to improve response rates.

5. What strategic actions should stakeholders prioritize?
Investing in biomarker research, expanding clinical trials, and enhancing global regulatory and commercial efforts are vital for capturing growth opportunities.

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References

1. FDA. (2006). Zolinza (vorinostat) drug label.
2. EvaluatePharma. (2022). Oncology drug market analysis and trends.
3. ClinicalTrials.gov. (Various). Zolinza clinical trial registry entries.
4. IMS Health. (2023). Oncology market share and revenue estimates.
5. Transparency Market Research. (2022). HDAC inhibitors market forecast.