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J Clin Endocrinol Metab. 2017 Nov 1;102(11):3914-3923. doi: 10.1210/jc.2017-01643.

Sex Steroids and Cardiovascular Outcomes in Transgender Individuals: A Systematic Review and Meta-Analysis.

Author information

1
Evidence-Based Practice Research Program, Mayo Clinic, Rochester, Minnesota 55905.
2
Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205.
3
Central Arkansas Veterans Health Care System, Little Rock, Arkansas 72205.
4
Division of Endocrinology, Diabetes and Metabolism, University of Florida, Gainesville, Florida 32610.
5
Division of Endocrinology, Department of Internal Medicine, University Hospital "Dr. Jose E. Gonzalez," Autonomous University of Nuevo León, Monterrey, Mexico 64460.
6
Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota 55905.
7
Mayo Clinic Libraries, Mayo Clinic, Rochester, Minnesota 55905.

Abstract

Background:

Transgender individuals receive cross-sex hormonal therapy to induce desired secondary sexual characteristics despite limited data regarding its effects on cardiovascular health.

Methods:

A comprehensive search of several databases up to 7 April 2015 was conducted for studies evaluating the effect of sex steroid use on lipids, myocardial infarction, stroke, venous thromboembolism (VTE), and mortality in transgender individuals. Pairs of reviewers selected and appraised the studies. A random-effects model was used to pool weighted mean differences and 95% confidence intervals (CIs).

Results:

We found 29 eligible studies with moderate risk of bias. In female-to-male (FTM) individuals, sex steroid therapy was associated with statistically significant increases in serum triglyceride (TG) levels at 3 to 6 months and at ≥24 months (21.4 mg/dL; 95% CI: 0.14 to 42.6) and in low-density lipoprotein cholesterol (LDL-C) levels at 12 months and ≥24 months (17.8 mg/dL; 95% CI: 3.5 to 32.1). High-density lipoprotein cholesterol (HDL-C) levels decreased significantly across all follow-up periods (highest at ≥24 months, -8.5 mg/dL; 95% CI: -13.0 to -3.9). In male-to-female (MTF) individuals, serum TG levels were significantly higher at ≥24 months (31.9 mg/dL; 95% CI: 3.9 to 59.9) without any changes in other parameters. Few myocardial infarction, stroke, VTE, and death events were reported (more frequently in MTF individuals).

Conclusions:

Low-quality evidence suggests that sex steroid therapy may increase LDL-C and TG levels and decrease HDL-C level in FTM individuals, whereas oral estrogens may increase TG levels in MTF individuals. Data about important patient outcomes remain sparse.

PMID:
28945852
DOI:
10.1210/jc.2017-01643
[Indexed for MEDLINE]

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