American Society of Clinical Oncology Policy Brief: FDA's Regulation of Electronic Nicotine Delivery Systems and Tobacco Products

Association of smoking with the survival of patients with brain metastasis of lung cancer

Background

Smoking is associated with increased mortality in patients with cancer. However, there are limited data on the impact of smoking on the survival of patients with brain metastases. Therefore, this study aimed to evaluate whether smoking was associated with survival and whether smoking cessation was beneficial to these patients.

Methods

This study used lung cancer with a brain metastasis cohort of the West China Hospital of Sichuan University from 2013 to 2021. Patients were stratified according to smoking history; the distribution, clinical characteristics, and survival data of each group were estimated. Kaplan-Meier analysis and risk analysis were performed for the survival endpoint.

Results

Of the 2,647 patients included in the analysis, the median age was 57.8 years, and 55.4% were men. Among them, 67.1% had no smoking history, 18.9% still smoked, and 14% reported quitting smoking. Compared with never smokers, current smokers [HR, 1.51 (95% CI, 1.35-1.69), p < 0.01] and former smokers [HR, 1.32 (95% CI, 1.16-1.49), p<0.01] had an increased risk of death. However, quitting smoking was not associated with improved survival [HR, 0.90 (95% CI, 0.77-1.04), p = 0.16]. The overall survival increased with the increase of smoking cessation years.

Conclusions

In lung cancer patients with brain metastases, smoking was associated with an increased risk of death, but quitting smoking was not associated with improved survival.

An International Systematic Review of Prevalence, Risk, and Protective Factors Associated with Young People's E-Cigarette Use

While the prevalence of young people's conventional cigarette use has decreased in many countries, the use of e-cigarettes has risen. To effectively counteract the growing popularity of e-cigarettes among young people internationally, researchers should know the exact prevalence as well as the protective and risk factors associated with vaping. Based on five eligibility criteria, 53 articles were chosen and analyzed by general characteristics, prevalence, sample characteristics, gender difference, protective factors, and risk factors. In this study, the international pooled prevalence of young people's lifetime e-cigarette use was 15.3%, the current use was 7.7%, and dual use was 4.0%. While the highest lifetime, current, and dual prevalence were found in Sweden, Canada, and the United Kingdom, respectively, the lowest prevalence was found in Germany, followed by South Korea and Sweden. Some protective and risk factors include perceived cost and danger of vaping, parental monitoring, internal developmental assets, cigarette use, family and peer smoking, exposure to online advertisements, and the presence of nearby retail stores. Based on this review, researchers and practitioners can develop different intervention programs and strategies for young smokers.

Comparing the regulation and incentivization of e-cigarettes across 97 countries

E-cigarette use continues to increase globally despite uncertainty regarding their long-term health impacts and around their effectiveness for tobacco smoking cessation. This uncertainty creates unique challenges for governments as they attempt to optimally regulate and positively or negatively incentivize these products in a way that maximizes the public's health. Current approaches to e-cigarette regulation and incentivization fall within a spectrum of options ranging from a singular focus on health protection, whereby policies intend to prevent the dangers of e-cigarettes, to a singular focus on using e-cigarettes for harm reduction, whereby policies intend to reduce the more harmful effects of smoking tobacco. Regulation options include prohibition, component ban, and regulation as medicinal products, poisons, tobacco products, consumer products, and/or unique products. Incentivization options include taxation, subsidization, and providing a financial reward. Through comparative public policy analysis, this study describes, compares and assesses the variety of approaches that 97 countries have taken to regulate and incentivize e-cigarettes. The goal is to inform future decisions by governments on how they approach the public health challenge posed by e-cigarettes, building on a nuanced understanding of the complexities of this challenge and what other jurisdictions have already implemented and learned.

Electronic cigarettes: Emerging trends and research hotspots

INTRODUCTION

Research on electronic cigarettes is an emerging field, with the number of articles in this field noted to have grown exponentially over recent years. We used a bibliometric analysis method (co-word analysis) to analyze the emerging trends and research hotspots in this field.

METHODS

Publication data on electronic cigarettes from 2010 to 2018 were retrieved and downloaded from the PubMed database. Theme trends and knowledge structures were analyzed on the relevant research fields of electronic cigarettes by using a biclustering analysis, strategic diagram analysis, and social network analysis methods. Research hotspots were extracted and compared from three periods.

RESULTS

Core topics that have continuously develop between the years 2010 and 2018 include: tobacco use cessation devices; tobacco products; tobacco use cessation devices/adverse effects; smoking prevention and adverse effects; electronic nicotine delivery systems/economics; and public health. Some currently undeveloped topics that could be considered as new future research directions include: tobacco use disorder/therapy; tobacco use disorder/epidemiology; students/psychology; students/statistics and numerical data; adolescent behavior/psychology; nicotine/toxicity; nicotinic agonists/administration and dosage; and electronic nicotine delivery systems/legislation and jurisprudence.

CONCLUSIONS

Results suggest that some currently immature topics in strategic coordinates and emerging hotspots in social network graphs can be used as future research directions.

Comparison of pharmacy students' self-efficacy to address cessation counseling needs for traditional and electronic cigarette use

BACKGROUND AND PURPOSE

This study assessed pharmacy students' self-rated ability to provide cessation counseling for e-cigarette use and traditional cigarette smoking.

EDUCATIONAL ACTIVITY AND SETTING

A cross-sectional study was conducted in spring 2014 at The University of Texas at Austin. Participants included first through fourth year (P1-P4) doctor of pharmacy (PharmD) students. Perceived confidence and knowledge to counsel on cigarette smoking cessation and e-cigarette cessation were self-rated and based on the Ask-Advise-Assess-Assist-and Arrange (5 A's) follow-up model as well as general counseling skills for recreational nicotine product use cessation. Comparisons were made between students' confidence to counsel patients on traditional cigarette smoking cessation and e-cigarette cessation and by class level.

FINDINGS

Compared to cigarette smoking cessation counseling, students were less confident in their ability to counsel on e-cigarette cessation using the 5 A's model and general counseling skills. Students perceived themselves to be less knowledgeable about the harmful effects of e-cigarettes, pharmacists' role in counseling on e-cigarette cessation, and how patients can benefit from e-cigarette cessation counseling. A higher proportion of students reported having no training on e-cigarette cessation compared to cigarette smoking cessation (59% vs 9%).

SUMMARY

Targeted training on how to counsel patients on e-cigarette cessation should be included in pharmacy curricula. Such training is expected to increase the confidence of pharmacists-in-training to address the needs of patients who use e-cigarettes.