A survey of pregnant women using isotretinoin

Contraceptive counseling for iPLEDGE and its burden on dermatologists

Since 2006, iPLEDGE, a risk evaluation and mitigation strategy (REMS), has attempted to prevent fetal exposures in people taking isotretinoin through contraceptive requirements and regular pregnancy testing. There has been criticism of iPLEDGE's requirements, results, and accessibility. iPLEDGE has placed significant burdens on physicians, patients, and administrative staff. Some level of burden is acceptable to prevent fetal exposures, but iPLEDGE burdens are so strenuous that physicians may choose not to prescribe isotretinoin because of them. There are several evidence-based adaptations that iPLEDGE and physicians can enact to improve the isotretinoin experience. First, physicians can practice shared-decision making in contraceptive counseling and educate patients on long-acting reversible contraceptives (LARCs) to improve the counseling process and outcomes. Second, physicians can take advantage of the reimbursed iPLEDGE contraceptive counseling sessions and refer patients accordingly. Finally, iPLEDGE should recognize the variation in efficacy among contraceptives. Specifically, LARCs and permanent surgical sterilization should be exempt from certain iPLEDGE requirements such as monthly pregnancy testing and attestations. iPLEDGE should work with dermatologists for the continual improvement of iPLEDGE. Communication, repetitive reassessment, and subsequent adaptations will result in better care for patients requiring isotretinoin.

Prescription retinoid and contraception use in women in Australia: A population-based study

BACKGROUND/OBECTIVES

Oral retinoids are teratogenic, and pregnancy avoidance is an important part of retinoid prescribing. Australia does not have a standardised pregnancy prevention programme for women using oral retinoids, and the contraception strategies for women who use oral retinoids are not well understood. The objectives were to determine trends in the use of prescription retinoids among Australian reproductive-aged women and whether women dispensed oral retinoids used contraception concomitantly.

METHODS

This was a population-based study using Australian Pharmaceutical Benefits (PBS) dispensing claims for a random 10% sample of 15-44-year-old Australian women, 2013 - 2021. We described rates and annual trends in dispensing claims for PBS-listed retinoids and contraceptives. We also estimated concomitant oral retinoid and contraceptive use on the day of each retinoid dispensing and determined if there was a period of contraceptive treatment that overlapped. Estimates were then extrapolated to the national level.

RESULTS

There were 1,545,800 retinoid dispensings to reproductive-aged women; 57.1% were oral retinoids. The rate of retinoid dispensing to reproductive-aged women increased annually, from 28 dispensings per 1000 population in 2013 to 41 per 1000 in 2021. The rate of oral retinoid dispensing doubled over the study period, from 14 dispensings per 1000 population in 2013 to 28 per 1000 in 2021, while topical retinoid dispensing did not change. Only 25% of oral retinoid dispensings had evidence of concomitant contraceptive use in 2021.

CONCLUSIONS

Rates of oral retinoid dispensing have doubled among reproductive-aged women over the past decade. A large percentage of oral retinoid use does not appear to have concomitant contraception use, posing a risk of teratogenic effects in pregnancies.

Community pharmacists' knowledge and awareness about isotretinoin therapy and its dispensing practice in Jordan

A validated self-reported questionnaire was used to evaluate pharmacists' knowledge about isotretinoin and their awareness of isotretinoin dispensing practice. The majority were not able to recognize the initial dose of isotretinoin, the potential side effects such as dyslipidemia and liver toxicity, the potential interaction with tetracycline and Vitamin A and the contraindications of isotretinoin. Around 41.3 % of the pharmacists dispensed isotretinoin without a prescription, and the majority did not recognize that isotretinoin should be dispensed for only 30 days, should not be dispensed without an emphasis on the appropriate indication, and did not know the appropriate duration of isotretinoin therapy. Male gender and postgraduate degree were associated with better awareness, while increased work experience and postgraduate degree were associated with better knowledge about isotretinoin therapy. Nevertheless, both male and female pharmacists demonstrated equivalent knowledge levels. The current study demonstrates the need to implement educational programs to improve pharmacists' knowledge and awareness about isotretinoin and its dispensing practice.

Identifying pregnancies in insurance claims data: Methods and application to retinoid teratogenic surveillance

PURPOSE

The purpose of the study is to develop an algorithm to identify pregnancies in administrative databases and apply it to assess pregnancy rates and outcomes in women prescribed isotretinoin or tretinoin.

METHODS

Using the 2011 to 2015 Truven Health MarketScan Database, we identified pregnancies, including losses and terminations. In a cohort design, nonpregnant women filling a prescription for isotretinoin or tretinoin were matched to five women without either prescription. Women were followed for 365 days or until conception, medication discontinuation, or enrollment discontinuation ("prescription episode"). Rates of pregnancy, risks of pregnancy losses, and prevalence of infant malformations at birth were assessed by exposure.

RESULTS

We identified 2 179 192 livebirths, 8434 stillbirths, 2521 mixed births, 415 110 spontaneous abortions, 124 556 elective terminations, and 8974 unspecified abortions. There were 86 834 isotretinoin and 973 587 tretinoin episodes, matched to 5 302 105 unexposed women. Pregnancy rates were 3 (isotretinoin), 19 (tretinoin), and 34 (unexposed) per 1000 person-years. Risk of spontaneous pregnancy losses were similar; however, terminations were more common in the isotretinoin-exposed (28% [95% CI: 21%-36%]) than the tretinoin-exposed (10% [95% CI: 9%-11%]) or unexposed pregnancies (6%). Malformations occurred in 4.5% (95% CI: 3.5%-5.6%) of the tretinoin-exposed pregnancies and 4.2% of the unexposed pregnancies (adjusted odds ratio: 1.16 [95% CI: 0.85-1.58]); isotretinoin-exposed births were too few to assess malformations.

CONCLUSIONS

Administrative databases can complement risk evaluation and mitigation strategies (REMS) for known teratogens and contribute to safety surveillance for other medications. Here, isotretinoin-exposed pregnancy rates were low, but existent, and many pregnancies were terminated. Tretinoin exposure was not associated with a meaningfully elevated risk of losses or malformations as compared with unexposed pregnancies.

Evaluation of compliance with isotretinoin PPP recommendations and exploration of reasons for non-compliance: Survey among French-speaking health care professionals and patients in Belgium

PURPOSE

To evaluate awareness of and compliance in Belgium by French-speaking health care professionals and patients with the isotretinoin safety recommendations regarding its teratogenic risk.

METHOD

Survey using online questionnaires, delivered from December 2014 to March 2015 for patients, pharmacists, dermatologists, and GPs and delivered again from September 2015 to October 2015 for GPs.

RESULTS

Questionnaires were completed by 24 dermatologists, 24 GPs, 58 pharmacists, and 33 female patients. The pregnancy prevention programme was poorly known by health care professionals (23.6%) and patients (15.2%). Health care professionals informed women of childbearing age in depth about the teratogenic risk (98.3% of pharmacists and 100.0% of GPs and dermatologists) and the importance of an effective contraceptive method (87.9% and 100.0%, respectively). Patients were less informed about the pregnancy test (25.9% and 14.6%) and the need to use a second contraceptive method (29.3% and 27.1%). The low compliance with the last 2 recommendations was due to a lack of adoption by health care professionals regarding the need for these recommendations if female patients have an effective contraceptive method and the pregnancy risk is discussed in detail with them.

CONCLUSION

The effectiveness of the pregnancy prevention programme recommendations should be reconsidered by an expert committee. Justifications should be added to effective recommendations to increase their adoption by health care professionals and patients.

Measuring the impact of medicines regulatory interventions - Systematic review and methodological considerations

AIMS

Evaluating the public health impact of regulatory interventions is important but there is currently no common methodological approach to guide this evaluation. This systematic review provides a descriptive overview of the analytical methods for impact research.

METHODS

We searched MEDLINE and EMBASE for articles with an empirical analysis evaluating the impact of European Union or non-European Union regulatory actions to safeguard public health published until March 2017. References from systematic reviews and articles from other known sources were added. Regulatory interventions, data sources, outcomes of interest, methodology and key findings were extracted.

RESULTS

From 1246 screened articles, 229 were eligible for full-text review and 153 articles in English language were included in the descriptive analysis. Over a third of articles studied analgesics and antidepressants. Interventions most frequently evaluated are regulatory safety communications (28.8%), black box warnings (23.5%) and direct healthcare professional communications (10.5%); 55% of studies measured changes in drug utilization patterns, 27% evaluated health outcomes, and 18% targeted knowledge, behaviour or changes in clinical practice. Unintended consequences like switching therapies or spill-over effects were rarely evaluated. Two-thirds used before-after time series and 15.7% before-after cross-sectional study designs. Various analytical approaches were applied including interrupted time series regression (31.4%), simple descriptive analysis (28.8%) and descriptive analysis with significance tests (23.5%).

CONCLUSION

Whilst impact evaluation of pharmacovigilance and product-specific regulatory interventions is increasing, the marked heterogeneity in study conduct and reporting highlights the need for scientific guidance to ensure robust methodologies are applied and systematic dissemination of results occurs.

Trends in pregnancy labeling and data quality for US-approved pharmaceuticals

OBJECTIVE

Over the past decades, there have been significant efforts in the United States to improve pharmaceutical labeling pertaining to pregnancy. The goal of this study was to describe trends in pregnancy labeling at the time of drug approval and over time.

STUDY DESIGN

The labeling data of 213 new pharmaceutical approvals between January 2003 and December 2012 were systematically reviewed. Initial approval data and subsequent labeling revisions were evaluated for pregnancy category, source of pregnancy and breast-feeding data, data in labor and delivery, presence of a registry, black-box warnings, and utilization of the new labeling format.

RESULTS

The most commonly approved pregnancy category was C (51.6%). Most pharmaceuticals (92.9%) had pregnancy data based on animal studies and 5.2% had human pregnancy data. For breast-feeding, there were no data in 47.9% of labels, animal data in 42.7%, and human data in 4.7%. There were no labor and delivery data in 85.9% of labels. Only 2.8% of medications had human data, with the remainder having animal data. The majority of medications (85%) did not have a pregnancy registry. Of those that had a registry, 68.7% were by therapeutic category, not agent specific. Seven medications had black-box warnings related to teratogenicity. Since the new labeling recommendations, 4.7% of medications incorporated the new format into the labeling, primarily approvals that occurred in 2012.

CONCLUSION

Despite significant efforts to improve drug labeling for pregnancy and lactation, there remains a paucity of human data in this understudied population.

Funding for teratology information services: up, down, and all around

Funding for Teratology Information Services has been an ongoing struggle over the 25 years of its existence. Traditional and novel funding mechanisms have been explored with varying success. The importance of providing teratology risk assessment and counseling to all women of reproductive age is now an established health care objective. Sufficient and stable funding for these services is essential.

Implementation of the harmonized EU isotretinoin Pregnancy Prevention Programme: a questionnaire survey among European regulatory agencies

BACKGROUND

There is little information on the status of the implementation of the isotretinoin Pregnancy Prevention Programme (PPP) in the EU, and on compliance with this programme by the regulatory agencies.

OBJECTIVE

The aim of the study was to obtain information on implementation of the harmonized PPP of isotretinoin in the EU member states plus Norway and Iceland.

MATERIALS AND METHODS

In January 2009, a questionnaire (request for non-urgent information [NUI]) was sent to all 25 EU member states, plus Norway and Iceland, to collect information on the implementation status of the PPP and its effectiveness.

RESULTS

The response rate was 82% (22 of the 27 countries). In 21 of the 27 member states, isotretinoin is marketed and the PPP is in force, and in 18 of the 22 responding countries, the total required elements (seven) following a formal EU review are incorporated in the PPP. Seven member states had additional measures in place. In spite of implementation of the PPP and additional measures, a total of 143 isotretinoin-exposed pregnancies have been reported in 16 of the 22 responding member states since implementation of the harmonized PPP.

CONCLUSIONS

Despite implementation of the isotretinoin PPP in most member states, isotretinoin-exposed pregnancies were reported. This has led some member states to implement additional measures to the PPP, resulting in inconsistency with the approach agreed in 2003 following the European-wide review. It has been further suggested that common elements should be developed for PPPs for all medicines that are known to carry a high teratogenic risk.

The neurobehavioral teratology of retinoids: a 50-year history

This review of the central nervous system (CNS) and behavioral teratology of the retinoids over the last 50 years is a commemorative retrospective organized by decade to show the prominent research focus within each period and the most salient findings. In the 1960s, research focused on the gross CNS malformations associated with exposure and the delineation of dose-response and stage-specific responses in rodent models. Relevant scientific events before and during the 1960s are also discussed to provide the zeitgeist in which the field of neurobehavioral teratology emerged in the 1970s. During this period, studies demonstrated that adverse effects on postnatal behavior could be produced in animals exposed to doses of vitamin A lower than those that were teratogenic or impacted growth. Work during the 1980s showed an overrepresentation of behavioral studies focused on the reliability of screening methods, while the marked effects of human exposure were illustrated in children born to women treated with isotretinoin during pregnancy. The human catastrophe invigorated research during the 1990s, a period when technological advances allowed more elegant examinations of the developing CNS, of biochemical, cellular, and molecular developmental events and regulatory actions, and of the effects of direct genetic manipulations. Likewise, research in the 1990s reflected a reinvigoration of research in neurobehavioral teratology evinced in studies that used animal models to try to better understand human vulnerability. These foci continued in the 2000-2010 period while examinations of the role of retinoids in brain development and lifelong functioning became increasingly sophisticated and broader in scope. This review of the work on retinoids also provides a lens on the more general ontogeny of the field of neurobehavioral teratology. Birth Defects Research (Part A), 2010. © 2010 Wiley-Liss, Inc.

Isotretinoin use and compliance with the Dutch Pregnancy Prevention Programme: a retrospective cohort study in females of reproductive age using pharmacy dispensing data

BACKGROUND

Isotretinoin is very effective in the treatment of severe acne. However, because of the teratogenic properties of this agent an isotretinoin Pregnancy Prevention Programme (PPP) was implemented in the Netherlands to guarantee that treatment is contraindicated in women of reproductive age unless at least one effective method of contraception is used. Furthermore, the PPP stipulates that isotretinoin treatment should be managed by physicians or specialists experienced in treatment with this drug and that only monthly prescriptions are issued.

OBJECTIVE

To assess compliance with the Dutch isotretinoin PPP in women of reproductive age during the study period of 1 January 2005 to 31 December 2008.

METHODS

Detailed information on dispensed medication and co-medication was available from the Dutch Foundation of Pharmaceutical Statistics. Four types of outcome were studied: concomitant dispensing of hormonal contraceptive with isotretinoin; the proportion of specialist prescribing of isotretinoin; prescribing of conventional acne therapy prior to isotretinoin initiation; and isotretinoin dispensing exceeding the maximum amount. The use of contraceptives in women aged between 15 and 45 years was defined as concomitant if the period of systemic contraceptive use overlapped the period of isotretinoin dispensing for at least 10 days, or if any dispensing of an intrauterine or intravaginal contraceptive was recorded since the year 2000. Dispensings were separated into those prescribed by either specialists or general practitioners (GPs). The use of antibacterials, antiandrogens or topical agents against acne was checked 4 months prior to an isotretinoin dispensing, and a possible excess of the maximum amount of isotretinoin was defined as prescriptions of more than 100 defined daily doses.

RESULTS

During the study period, data were available for 442 Dutch pharmacies encompassing 4881 women of reproductive age using isotretinoin at least once during study period. Among women of reproductive age, the use of isotretinoin increased during the study period. The proportion of isotretinoin initiation with concomitant oral hormonal or intrauterine contraceptives was low (59.3% [95% CI 57.6, 61.0]). Initiation of isotretinoin by a specialist increased the chance for concomitant contraception by 26% (95% CI 6.0, 49.0); in 78.2% (95% CI 76.8, 79.6) of women, isotretinoin was initiated by a specialist. Conventional acne therapy up to 16 months prior to isotretinoin initiation was found in 70% of the women (70.3% [95% CI 66.0, 74.6]). In 1.4% (95% CI 1.0, 1.8) of cases of treatment initiation, the amount of isotretinoin dispensed on one prescription seemed too high.

CONCLUSION

Attention should be paid to improving the implementation of the isotretinoin PPP. Despite clear guidelines and warnings in the product information, our study strongly suggests that concomitant use of isotretinoin and contraceptives is too low. Even though we will have missed non-pharmacological forms of contraception, these results raise doubts about the safe use of isotretinoin in women of reproductive age in the Netherlands. Furthermore, isotretinoin does not seem to be used in cases of severe acne only. Reserving isotretinoin prescribing to specialists may improve adherence to the PPP.

iPLEDGE allegiance to the pill: evaluation of year 1 of a birth defect prevention and monitoring system

The United States Food and Drug Administration (FDA), in collaboration with pharmaceutical manufacturers, have recently implemented a heavily revised risk-management program for patients on isotretinoin (Accutane), a drug with known and pronounced teratogenic effects. This revised risk management plan places significant burdens on both providers and patients in the hopes of achieving its goal of reducing fetal exposure to isotretinoin. The main focus of this paper is to discuss the burdens of various aspects of the program in relationship to potential corresponding benefits. In particular, we evaluate the pregnancy rates of women on isotretinoin therapy compared with that of the general population and the rate changes based on the risk management programs. Additionally, we investigate whether the benefits of the program for women have increased as the benefits have risen. We devote special attention to the ethical implications of the intent of the program and to an analysis of the ethical justification of the restrictions placed on women of childbearing potential (WCP) as it compares to the risk-benefit relationship of using isotretinoin.

The effect of drug consultation center guidance on contraceptive use among women using isotretinoin: a randomized, controlled study

BACKGROUND

Women of reproductive age treated with isotretinoin are required to use two forms of contraceptives, yet adherence to the recommendations is limited. Our objective was to determine if an active intervention by a drug consultation center (DCC) will increase contraceptive use among women taking isotretinoin.

METHODS

In a randomized, controlled study, women of reproductive age who called the DCC seeking advice regarding isotretinoin were randomly assigned to an intervention group (information by phone during initial interview, by mailed written form, and by text messages sent to their cellular phones) and a control group (information given once). A follow-up call was made to all women 3 months after the first interview.

RESULTS

One hundred eight women (50 in the intervention group and 58 control) were enrolled. Most women do not adhere to the recommended contraceptive use. After 3 months, 50% of the study group and 40% of the control group were using a contraceptive (p = 0.41), and only 2 women in each group used two methods of contraception.

CONCLUSIONS

Strategies to increase adherence to contraceptive use among women treated with isotretinoin are needed.

Principles and practice of teratology for the obstetrician

Common clinical problems of counseling patients about potential teratogenic risks in pregnancy are presented and principles of teratogenicity assessment.

Can we ensure the safe use of known human teratogens?: The iPLEDGE test case

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.

The effectiveness of Teratology Information Services (TIS)

BACKGROUND

Women and their health care providers have few reliable sources of information regarding the safety of exposures in pregnancy and lactation. Evidence-based information on these topics is provided by Teratology Information Services (TIS). Access to TIS, however, is limited in many regions, and many services have difficulty maintaining ongoing funding. The objective of this review is to highlight published reports of the effectiveness of TIS in improving maternal and neonatal health.

METHODS

A search of the Pub Med and Econ Lit databases was performed with no date restriction, using the search terms teratology, information, counseling, pregnancy, effectiveness, birth defects.

RESULTS

Information disseminated from TIS has been shown to prevent congenital malformations, unnecessary pregnancy terminations, and occupational risks. TIS support optimal nutritional supplementation in pregnancy and optimal drug therapy in pregnancy and breast-feeding. In addition, they correct misperceptions of risk and facilitate knowledge transfer and translation. TIS have the potential to provide health care cost savings.

CONCLUSIONS

TIS are vital services in supporting optimal maternal and neonatal health. A formal economic evaluation of TIS is required in order to inform resource allocation decision-making and continued funding of these services.

A risk management program aimed at preventing fetal exposure to isotretinoin: retrospective cohort study

BACKGROUND

Preventing fetal exposure to isotretinoin is an important public health goal. Since approval of isotretinoin (1982), the Food and Drug Administration has implemented several unsuccessful risk management programs aimed at preventing fetal exposure. The Kaiser Permanente isotretinoin risk management program included electronic capture of all isotretinoin prescriptions and the documentation of pregnancy testing with each dispense.

OBJECTIVE

Our aim was to analyze the success of Kaiser Permanente's program at improving pregnancy testing rates and reducing fetal exposure.

METHODS

This was a retrospective cohort study.

RESULTS

Pregnancy testing rates improved after implementation of the Kaiser Permanente program. However, the rate of fetal exposure to isotretinoin did not change (0.21% before vs 0.23% after, P = .85). LIMITATIONS/CONCLUSION: In this study, linking a negative pregnancy test to isotretinoin dispensing did not reduce fetal exposures. Patient failure to use two contraceptive methods was the most common reason for fetal exposure. These results have important implications for iPLEDGE, the new isotretinoin risk management program mandated by the Food and Drug Administration.