Target intelligence / Profile preview

Sex Hormone-Binding Globulin (SHBG)

Target
SHBG
Molecular classification
Glycoprotein, Transport protein
01

Overview

Sex hormone-binding globulin (SHBG) is a glycoprotein primarily produced in the liver that binds to sex hormones, such as testosterone and estradiol, and regulates their bioavailability in the bloodstream. SHBG modulates the distribution of these hormones between free and bound states, influencing their access to target tissues. Its levels are affected by hormonal and metabolic factors, and its measurement is clinically relevant for evaluating disorders related to androgen and estrogen activity.

Other names
Sex steroid-binding proteinTestosterone-binding beta-globulinTestosterone-estrogen-binding globulinTestosterone-estradiol binding globulinTestis-specific androgen-binding proteinABPSBPTEBG
02

Mechanism of action

SHBG binds to sex hormones, modulating their bioavailability and access to target tissues.

03

Biological functions

Steroid hormone transportRegulation of sex hormone bioavailability
04

Disease associations

Polycystic ovary syndrome (PCOS)Type 2 diabetes mellitusEndometrial cancerHyperthyroidismHypogonadismHepatic cirrhosisHypothyroidism/myxedemaHyperprolactinemiaExcessive androgen activity syndromes
05

Safety considerations

Altered SHBG levels can indicate underlying endocrine or metabolic disorders.Drug interactions affecting SHBG levels.
06

Interacting drugs

Exogenous steroids

1 more in the full profile.

07

Biomarkers

SHBG serum levelsTestosterone/SHBG ratio

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