Cigarettes, Genetic Background, and Menopausal Timing: the Presence of Single Nucleotide Polymorphisms in Cytochrome P450 Genes is Associated with Increased Risk of Natural Menopause in European-American Smokers
Overview
Authors
Affiliations
Objective: This study aims to evaluate associations between variations in genes involved in the metabolism of environmental chemicals and steroid hormones and risk of menopause in smokers.
Methods: Survival analysis was performed on 410 eligible participants from the Penn Ovarian Aging study (ongoing for 14 years), a cohort study of late-reproductive-age women. Single nucleotide polymorphisms at the following loci were studied: COMT Val158Met, CYP1B1*4 Asn452Ser, CYP1B1*3 Leu432Val, and CYP3A4*1B.
Results: Significant interactions between smoking and single nucleotide polymorphisms were observed in European-American carriers of CYP3A4*1B and CYP1B1*3, supporting a greater risk of menopause entry compared with those not carrying these alleles. Among CYP1B1*3 carriers, smokers had a greater risk of menopause entry than nonsmokers (adjusted hazard ratio [HR], 2.26; 95% CI, 1.4-3.67; median time to menopause, 10.42 and 11.07 y, respectively). No association between smoking and menopause was identified in CYP1B1 wild types. Among CYP3A4*1B carriers, smokers were at greater risk for menopause entry than nonsmokers (adjusted HR, 15.1; 95% CI, 3.31-69.2; median time to menopause, 11.36 and 13.91 y, respectively). Risk of menopause entry in CYP3A4 wild types who smoked was far lower (adjusted HR, 1.59; 95% CI, 1.03-2.44). Heavily smoking CYP1B1*3 carriers (adjusted HR, 3.0; 95% CI, 1.54-5.84; median time to menopause, 10.41 y) and heavily smoking CYP3A4*1B carriers (adjusted HR, 17.79; 95% CI, 3.21-98.65; median time to menopause, 5.09 y) had the greatest risk of menopause entry.
Conclusions: Our finding that the risk of menopause entry in European-American smokers varies depending on genetic background represents a novel gene-environment interaction in reproductive aging.
Neff A, Laws M, Warner G, Flaws J Curr Environ Health Rep. 2022; 9(1):53-79.
PMID: 35103957 PMC: 8988816. DOI: 10.1007/s40572-022-00334-y.
Age of Natural Menopause Among Jordanian Women and Factors Related to Premature and Early Menopause.
Bustami M, Matalka K, Elyyan Y, Hussein N, Hussein N, Abu Safieh N Risk Manag Healthc Policy. 2021; 14:199-207.
PMID: 33500673 PMC: 7826161. DOI: 10.2147/RMHP.S289851.
Woods N, Mitchell E, Coslov N, Richardson M Menopause. 2021; 28(4):447-466.
PMID: 33470754 PMC: 9769087. DOI: 10.1097/GME.0000000000001707.
Genetic Variation and Hot Flashes: A Systematic Review.
Crandall C, Diamant A, Maglione M, Thurston R, Sinsheimer J J Clin Endocrinol Metab. 2020; 105(12).
PMID: 32797194 PMC: 7538102. DOI: 10.1210/clinem/dgaa536.
Freeman E, Sammel M Womens Midlife Health. 2019; 2:1.
PMID: 30766699 PMC: 6299955. DOI: 10.1186/s40695-016-0014-2.