The ADRB3 rs4994 polymorphism increases risk of childhood and adolescent overweight/obesity for East Asia’s population: an evidence-based meta-analysis

ABSTRACT

Whether the Adrenoceptor Beta 3 (ADRB3) gene rs4994 polymorphism could affect the individual risk of childhood and adolescent overweight/obesity remains controversial. This meta-analysis was performed to estimate the prevalence of this polymorphism in overweight/obesity, and test the potential association by summarizing existing evidence. Comprehensive literature search in PubMed, Web of Science, Cochrane Library, Wanfang, and CNKI databases was performed to identify eligible data sets. Finally, 16 studies involving 5,147 overweight/obese cases and 7,350 non-obese controls were included for further synthetic analyses. Odds ratio (OR) and its corresponding 95% confidence intervals (CIs) were statistically calculated. Totally, 69.9% of the included subjects came from East Asia. In the meta-analysis for overall population, statistically significant associations with increased risk of childhood and adolescent overweight/obesity were identified in allele model (OR 1.23, 95% CI 1.10–1.38), heterozygote model (OR 1.39, 95% CI 1.16–1.68), and dominant model (OR 1.31, 95% CI 1.12–1.54). Further stratified analysis according to geographical regions revealed that the statistical significance could only be detected in the East Asia subgroup in allele model, homozygote model, heterozygote model, and dominant model. In summary, our meta-analysis indicated that the ADRB3 rs4994 polymorphism could significantly increase the risk of childhood and adolescent overweight/obesity, especially for the East Asia’s population.

KEYWORDS:

• ADRB3
• genetic polymorphism
• obesity
• meta-analysis

Authors’ contributions

XY and XX conceived and designed this study. XY led the investigations and recruited the team. JR, YZ, WH and CX performed the systematic literature review and analyses. XY and XX drafted the manuscript. All authors read and approved the proof of the manuscript before submission.

Disclosure statement

No potential conflict of interest was reported by the authors.

Ethical statement

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

For this type of study, formal consent is not required.

Additional information

Funding

This study was funded by the research start-up fund of Soochow University [Q413400116], the natural Science Foundation of Jiangsu Province [No. BK20170334], the College Research Program of Science and Technology Commission Foundation of Jiangsu Province [17KJB310013], the National Natural Science Foundation of China [31701251], a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, the Hui-Chun Chin and Tsung-Dao Lee Chinese Undergraduate Research Endowment, the National Undergraduate Training Program for Innovation and Entrepreneurship [201910285051Z], and the special fund of Soochow University for medical college students’ extracurricular scientific research.