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Can we ensure the safe use of known human teratogens?: The iPLEDGE test case
Margaret A Honein1, Jill A Lindstrom, Sandra L Kweder
1National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
Abstract:
Minimising the public health burden of isotretinoin-induced teratogenicity has been a challenge for 24 years, the duration of availability of isotretinoin in the US for the treatment of severe, recalcitrant nodular acne. Although the teratogenicity of this drug is well known and risk-management programmes had been implemented, preventable fetal exposures continued to occur, largely as a result of the lack of sufficient controls within the programmes themselves. The manufacturers of isotretinoin implemented a new risk-management programme, iPLEDGE, in March 2006. iPLEDGE is a comprehensive distribution system that includes mandatory registration of patients, healthcare providers, pharmacies, and wholesalers. It allows real-time linkage of pregnancy-test results for verification prior to the dispensing of isotretinoin. Although the challenges of implementing a closed distribution system for a very widely used medication have been extensive, the potential public health benefits from preventing fetal exposure to isotretinoin are substantial.
Insights
Preventing birth defects from isotretinoin (Accutane) has been difficult. The iPLEDGE program, a comprehensive system, aims to reduce fetal exposure by controlling drug distribution and verifying pregnancy tests.
Area of Science:
- Dermatology
- Public Health
- Pharmacovigilance
Background:
- Isotretinoin is a crucial treatment for severe acne but poses significant teratogenic risks.
- Previous risk management programs for isotretinoin failed to adequately prevent fetal exposures.
- A 24-year history in the US highlights persistent challenges in managing isotretinoin's teratogenicity.
Purpose of the Study:
- To evaluate the implementation and potential impact of the iPLEDGE risk management program.
- To assess the effectiveness of a comprehensive distribution system in minimizing isotretinoin-induced teratogenicity.
- To understand the challenges and benefits of a closed-loop system for a widely prescribed medication.
Main Methods:
- Implementation of the iPLEDGE program, a mandatory registration and closed distribution system for isotretinoin.
- Real-time verification of pregnancy test results prior to dispensing isotretinoin.
- Mandatory registration of all stakeholders: patients, healthcare providers, pharmacies, and wholesalers.
Main Results:
- The iPLEDGE program represents a comprehensive approach to controlling isotretinoin distribution.
- Challenges in implementation were extensive due to the medication's widespread use.
- The program aims to substantially reduce fetal exposure to isotretinoin.
Conclusions:
- The iPLEDGE program is a significant advancement in managing isotretinoin's teratogenic risks.
- A closed distribution system, despite implementation hurdles, holds substantial public health benefits.
- Continued vigilance and adherence are crucial for the program's success in preventing birth defects.
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