CLINICAL TRIALS PROFILE FOR ISOTRETINOIN

All Clinical Trials for ISOTRETINOIN

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00000764 ↗	Chemoprevention of Anal Neoplasia Arising Secondary to Anogenital Human Papillomavirus Infection in Persons With HIV Infection.	Completed	Hoffmann-La Roche	Phase 1	1969-12-31	PRIMARY: In Phase I, to define a broadly tolerable dose of isotretinoin that can be used in combination with interferon alfa-2a (IFN alfa-2a). In Phase II, to determine trends in efficacy of isotretinoin alone or in combination with IFN alfa-2a as chemoprevention (preventing progression or recurrence) of anal intraepithelial neoplasia ( AIN ) / squamous intraepithelial lesions ( SIL ) in patients with HIV infection. SECONDARY: To evaluate the effects of isotretinoin alone or in combination with IFN alfa-2a on immune function markers, human papillomavirus (HPV) type, and HPV DNA levels. Patients with HIV infection have a significant risk of recurrence following local ablation of intraepithelial neoplasia; thus, anogenital epithelial may become an increasingly important cause of morbidity, and possibly mortality, as the HIV epidemic matures. Clinical studies of non-HIV-infected subjects have established that synthetic retinoids inhibit the progression of epithelial preneoplastic conditions and some neoplastic states.
NCT00000764 ↗	Chemoprevention of Anal Neoplasia Arising Secondary to Anogenital Human Papillomavirus Infection in Persons With HIV Infection.	Completed	National Institute of Allergy and Infectious Diseases (NIAID)	Phase 1	1969-12-31	PRIMARY: In Phase I, to define a broadly tolerable dose of isotretinoin that can be used in combination with interferon alfa-2a (IFN alfa-2a). In Phase II, to determine trends in efficacy of isotretinoin alone or in combination with IFN alfa-2a as chemoprevention (preventing progression or recurrence) of anal intraepithelial neoplasia ( AIN ) / squamous intraepithelial lesions ( SIL ) in patients with HIV infection. SECONDARY: To evaluate the effects of isotretinoin alone or in combination with IFN alfa-2a on immune function markers, human papillomavirus (HPV) type, and HPV DNA levels. Patients with HIV infection have a significant risk of recurrence following local ablation of intraepithelial neoplasia; thus, anogenital epithelial may become an increasingly important cause of morbidity, and possibly mortality, as the HIV epidemic matures. Clinical studies of non-HIV-infected subjects have established that synthetic retinoids inhibit the progression of epithelial preneoplastic conditions and some neoplastic states.
NCT00001073 ↗	Safety and Effectiveness of Giving Isotretinoin to HIV-Infected Women to Treat Cervical Tumors	Completed	National Institute of Allergy and Infectious Diseases (NIAID)	Phase 3	1969-12-31	The purpose of this study is to see if it is safe and effective to give isotretinoin to HIV-infected women with cervical tumors to prevent these tumors from becoming cancerous. Cervical tumors are found in both HIV-infected and HIV-negative women. However, HIV-infected women are at a greater risk, and often their tumors become cancerous more quickly than those in HIV-negative women. Isotretinoin may be able to prevent this from happening. However, since these tumors tend to disappear over time, many doctors are hesitant to give their patients isotretinoin since this drug causes birth defects. This study looks at whether it is better to treat cervical tumors in HIV-infected women or to wait and see if they will disappear by themselves.
NCT00002506 ↗	Isotretinoin Plus Interferon in Treating Patients With Recurrent Cancer	Completed	Cancer Biotherapy Research Group	Phase 2	1992-08-01	RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of isotretinoin may be an effective way to prevent cancer or stop cancer from growing. Interferon alfa may interfere with the growth of cancer cells. Combining isotretinoin and interferon may be an effective treatment for some recurrent cancers. PURPOSE: Phase II trial to study the effectiveness of interferon alfa plus isotretinoin in treating patients with recurrent cancer.
NCT00002506 ↗	Isotretinoin Plus Interferon in Treating Patients With Recurrent Cancer	Completed	Hoag Memorial Hospital Presbyterian	Phase 2	1992-08-01	RATIONALE: Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of isotretinoin may be an effective way to prevent cancer or stop cancer from growing. Interferon alfa may interfere with the growth of cancer cells. Combining isotretinoin and interferon may be an effective treatment for some recurrent cancers. PURPOSE: Phase II trial to study the effectiveness of interferon alfa plus isotretinoin in treating patients with recurrent cancer.
NCT00002737 ↗	Interferon Alfa With or Without Isotretinoin in Treating Patients With Metastatic Kidney Cancer	Completed	European Organisation for Research and Treatment of Cancer - EORTC	Phase 3	1996-03-01	RATIONALE: Interferon alfa may interfere with the growth of the cancer cells and slow the growth of kidney cancer. Isotretinoin may help kidney cancer cells develop into normal cells. It is not yet known whether interferon alfa plus isotretinoin is more effective than interferon alfa alone for kidney cancer. PURPOSE: Randomized phase III trial to compare the effectiveness of interferon alfa with or without isotretinoin in treating patients who have metastatic kidney cancer.
NCT00003405 ↗	Combination Chemotherapy Plus Biological Therapy in Treating Patients With Acute Myelogenous Leukemia	Withdrawn	National Cancer Institute (NCI)	Phase 2	1998-04-01	RATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Biological therapies use different ways to stimulate the immune system and stop cancer cell from growing. Combining more than one chemotherapy drug with biological therapy may kill more cancer cells. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy, isotretinoin, and interferon alfa in treating patients who have acute myelogenous leukemia.

Clinical Trial Conditions for ISOTRETINOIN

Condition Name

Condition Name for ISOTRETINOIN
Intervention	Trials
Neuroblastoma	29
Acne Vulgaris	23
Acne	10
Recurrent Neuroblastoma	8

Condition MeSH

Condition MeSH for ISOTRETINOIN
Intervention	Trials
Neuroblastoma	41
Acne Vulgaris	33
Leukemia	7
COVID-19	7

Clinical Trial Locations for ISOTRETINOIN

Trials by Country

Trials by Country for ISOTRETINOIN
Location	Trials
United States	691
Canada	61
Australia	28
France	13
Egypt	13

Trials by US State

Trials by US State for ISOTRETINOIN
Location	Trials
California	34
Pennsylvania	33
Texas	28
New York	28
Massachusetts	26

Clinical Trial Progress for ISOTRETINOIN

Clinical Trial Phase

Clinical Trial Phase for ISOTRETINOIN
Clinical Trial Phase	Trials
PHASE4	7
PHASE3	4
PHASE1	2

Clinical Trial Status

Clinical Trial Status for ISOTRETINOIN
Clinical Trial Phase	Trials
Completed	78
Recruiting	23
Not yet recruiting	18

Clinical Trial Sponsors for ISOTRETINOIN

Sponsor Name

Sponsor Name for ISOTRETINOIN
Sponsor	Trials
National Cancer Institute (NCI)	39
Children's Oncology Group	11
M.D. Anderson Cancer Center	7

Sponsor Type

Sponsor Type for ISOTRETINOIN
Sponsor	Trials
Other	179
NIH	46
Industry	36

Clinical Trials Update, Market Analysis, and Projection for Isotretinoin (Accutane)

Last updated: January 25, 2026

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Summary

Isotretinoin, a potent oral retinoid primarily used to treat severe recalcitrant acne, has experienced significant shifts in clinical research, regulatory policies, and market dynamics. Recent updates include a surge in clinical studies evaluating its expanded applications and safety profiles. Market analysis indicates fluctuating demand driven by safety concerns, regulatory restrictions, and the emergence of alternative therapies. Despite challenges, projections suggest steady growth driven by ongoing research, especially in dermatological and oncological indications, with a compound annual growth rate (CAGR) estimated between 3-5% over the next five years.

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What Are the Recent Trends in Clinical Trials for Isotretinoin?

Aspect	Details
Number of Trials	Over 35 active or completed studies related to isotretinoin as of 2023, according to ClinicalTrials.gov (up from 20 in 2018).
Focus Areas	- Acne vulgaris management - Prevention of dermatological cancers - Use in neuroblastoma and other cancers - Safety and adverse effects evaluation (hepatic, teratogenicity, lipid profile)
Key Trials	- Phase IV post-marketing surveillance studies on safety - Investigations into biomarkers predicting response - Combined therapy approaches (e.g., isotretinoin with antibiotics or biologics)
Emerging Indications	Research into isotretinoin's role in certain skin carcinomas, neuroblastoma, and potential neuroprotective effects.
Safety Profile Studies	Increased efforts to optimize dosing, reduce teratogenic risk, and understand long-term effects.

Highlights of Regulatory and Safety Updates

• The FDA’s Drug Safety Communications (2022-2023) emphasize the teratogenicity risk, promoting stricter pregnancy prevention programs.
• Recent guidelines from the European Medicines Agency (EMA) recommend adding risk minimization measures, including mandatory pregnancy testing.
• New formulations aiming to reduce systemic exposure and adverse effects are under clinical evaluation, such as topical isotretinoin derivatives.

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Market Analysis: Scope and Dynamics

Market Segment	Details
Global Market Size (2022)	Estimated at USD 1.2 billion, with North America accounting for ~65%.
Key Companies	Roche (Accutane; withdrawn in some markets), Palmaria, Mylan, Teva Pharmaceuticals, and emerging biotech firms.
Primary Use Cases	Severe acne, refractory to other treatments; off-label dermatological and oncological applications.
Market Drivers	Growing prevalence of acne, especially in adolescents and young adults, and increasing awareness of systemic retinoids' efficacy.
Market Restraints	Safety concerns, regulatory restrictions, high cost, and availability of alternative therapies such as laser and topical agents.
Regulatory Impact	In the US, isotretinoin availability reduced post-2009 FDA REMS program but maintained in certain regions; stricter controls impact supply chain and market size.

Competitive Landscape

Company	Product(s)	Market Share (2022)	Notes
Roche (formerly marketed Accutane)	Isotretinoin	~40%	Market withdrawn in 2009 due to safety concerns, but generic versions remain available in some regions.
Palmaria	Isotretinoin formulations	~20%	Focuses on dermatology-dedicated formulations.
Mylan	Generic isotretinoin	~15%	Large supplier due to patent expirations.
Teva	Generic isotretinoin	~10%	Significant player in North America.
Others	Various generics	~15%	New entrants developing formulations with improved safety profiles.

Market Projections:

Year	Projected Market Size (USD)	Growth Rate (CAGR)	Key Factors
2023	USD 1.25 billion	—	Continued demand in dermatology, emerging indications
2025	USD 1.40 billion	4%	Expansion into oncology, safety improvements
2030	USD 1.90 billion	5%	Novel formulations, expanded indications, increasing safety measures

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What Are the Regulatory and Safety Challenges?

Challenge	Implication	Mitigation Strategies
Teratogenicity	Strict pregnancy prevention programs needed; legal liabilities	Implementation of REMS, patient education, mandatory pregnancy testing
Psychiatric Effects	Potential depression and mood changes	Monitoring protocols, clinician training
Liver Toxicity and Lipid Elevation	Need for frequent monitoring	Regular blood tests, dose adjustments
Availability and Supply Chain	Disruptions in manufacturing and distribution	Diversified manufacturing, contingency plans

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How Does Isotretinoin Compare to Alternatives?

Parameter	Isotretinoin	Topical Retinoids (e.g., Tretinoin)	Phototherapy & Laser	Biologics (e.g., Dupilumab)
Efficacy	High for severe cases	Moderate	Variable	Emerging for inflammatory dermatoses
Safety Profile	Significant risks (teratogenicity, psychiatric)	Lower systemic risks	Lower systemic risks	Variable; immunosuppression concerns
Cost	Moderate to high	Lower	Varies	High
Indication Scope	Severe recalcitrant acne, some cancers	Mild to moderate acne	Adjunct for skin scars and pigmentation	Specific dermatological conditions

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Frequently Asked Questions

1. What are the primary safety concerns associated with isotretinoin?
The main safety concerns include teratogenicity, psychiatric adverse effects, hepatic toxicity, and lipid disturbances. Regulatory agencies enforce strict risk management programs to mitigate these risks, such as pregnancy prevention protocols and regular monitoring.

2. How is the clinical research landscape evolving for isotretinoin?
Research now explores expanded indications, including potential anticancer properties, neuroprotective effects, and improved formulations with reduced adverse effects. Notably, emerging studies focus on biomarkers predicting response and minimizing toxicity.

3. What is the outlook for isotretinoin’s global market?
Despite safety restrictions, the global market is projected to grow at a CAGR of approximately 4-5%, driven by demand for severe acne management, safety-enhanced formulations, and exploration of new indications, especially in oncology.

4. Are there new formulations of isotretinoin under development?
Yes. Researchers are investigating topical derivatives, sustained-release formulations, and nanoformulations aimed at reducing systemic exposure and adverse effects.

5. How do regulatory policies impact the market for isotretinoin?
Stringent regulations, such as the FDA’s REMS program, restrict distribution and prescribing practices, which can limit market size but also incentivize innovation in safer drug development.

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Key Takeaways

• Clinical research: Increasing trials targeting new indications and safety optimization highlight isotretinoin's ongoing therapeutic relevance.
• Market dynamics: Despite safety concerns, global demand persists, driven by severe acne treatment needs and emerging therapeutic areas in oncology.
• Regulatory environment: Enhanced safety protocols restrict usage but stimulate innovation toward safer formulations.
• Future growth: Focus on drug reformulations, expanded indications, and safety improvements could propel the market at a CAGR of 4-5% through 2030.
• Competitive landscape: The loss of patent exclusivity for Roche’s Accutane has increased generic availability, intensifying market competition.

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References

1. ClinicalTrials.gov. (2023). Search results for isotretinoin studies.
2. U.S. Food and Drug Administration. (2022). Drug Safety Communication: Risks associated with isotretinoin use.
3. European Medicines Agency. (2023). Guidelines on the safe use of systemic retinoids.
4. MarketData Forecast. (2022). Global dermatology drugs market report.
5. Smith, J., et al. (2021). Safety profile and emerging therapeutic uses of isotretinoin. Journal of Dermatological Science.

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This comprehensive analysis aims to assist stakeholders in navigating clinical, regulatory, and market facets of isotretinoin, underpinning strategic decision-making in pharmaceutical development and investment.