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Glossary Androgen Receptor Signaling

hormones like testosterone bind to receptors, influencing gene expression

Androgen Receptor Signaling, also known as AR signaling, is a biological pathway where androgens (male hormones like testosterone) bind to androgen receptors in cells. This binding activates the receptors, which then influence the expression of specific genes, affecting various bodily functions such as hair growth, muscle development, and reproductive processes. In the context of hair, AR signaling can play a role in conditions like androgenetic alopecia (pattern hair loss).

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Research

5 / 1000+ results

research Androgen Receptor–Mediated Paracrine Signaling Induces Regression of Blood Vessels in the Dermal Papilla in Androgenetic Alopecia

6 citations , January 2022 in “Journal of Investigative Dermatology”

This study found that androgen receptor signaling is linked to blood vessel regression in the dermal papilla of balding scalp, contributing to hair follicle miniaturization in androgenetic alopecia.

research Hair Thickness Growth Effect of Adenosine Complex in Male-/Female-Patterned Hair Loss via Inhibition of Androgen Receptor Signaling

June 2024 in “International journal of molecular sciences”

In this study, researchers found that topical treatment with adenosine improved hair growth and thickness by significantly increasing hair density and thickness after four months in vivo, with results comparable to minoxidil, potentially due to adenosine's anti-androgenic effects.

research Androgen receptor signaling as a new target for intervention in acute myeloid leukemia

September 2025 in “Blood Advances”

This study found that targeting androgen receptors with prostate cancer drugs ARN509 and finasteride induced remission and increased survival in a leukemia mouse model, suggesting a potential new treatment approach for acute myeloid leukemia.

research The Androgen Receptor Antagonizes Wnt/β-Catenin Signaling in Epidermal Stem Cells

46 citations , June 2015 in “Journal of Investigative Dermatology”

This study found that androgen receptor activation in adult mouse skin reduces β-catenin-induced hair follicle growth and sebaceous gland conversion, highlighting its role in stem cell fate decisions.

research Androgen Signaling Regulates SARS-CoV-2 Receptor Levels and Is Associated with Severe COVID-19 Symptoms in Men

139 citations , December 2020 in “Cell Stem Cell”

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

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Community Join

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community A new study by Deng and colleagues set out to explore differences between balding and non balding scalps...

39 upvotes 4 years ago

Balding scalps have more androgen receptors, leading to increased TGF-beta, which causes blood vessel loss and hair follicle miniaturization. Blocking androgen signaling and TGF-beta may help prevent hair loss.

community Is there a topical androgen receptor blocker so we don't have to fuck with the enzyme and destroy our allopregnanolone, but go and hit the end target straight?

in Treatment 44 upvotes 2 years ago

The conversation discusses topical androgen receptor blockers for hair loss, mentioning Clascoterone, Pyrilutamide, GT20029, and RU58841. Ketoconazole's effectiveness and application methods are also debated.

community New angles to attack beyond DHT

4 upvotes 2 years ago

Exploring hair loss treatments beyond DHT, including Minoxidil, pyruvate, Gt20029 targeting androgen receptors, and vasodilators. Other options like Kx826, adenosine signaling, growth factor topicals, and microneedling are also discussed.

community Why Fin/Dut Isn't Working for You GPR133: a new hairloss mechanism + Steroid Hair Loss Deep Dive

6 upvotes 2 months ago

Hair loss may be linked to the GPR133 receptor, independent of the androgen receptor pathway. Treatments like finasteride, dutasteride, minoxidil, RU58841, and KX-826 show varying results, with hair loss persisting due to high testosterone and GPR133's role.

community Most Promising Future Hair Loss Treatments In 2026

83 upvotes 2 weeks ago

Promising hair loss treatments in 2026 include GT20029, a topical androgen receptor degrader, and VDPHL01, an extended-release oral minoxidil, both offering safer alternatives with fewer side effects. Other treatments like sublingual minoxidil, OND-1, JW0061, TDM-105795, and AMP-303 are also being explored.

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Learn

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learn Clascoterone

Topical androgen-receptor blocker, approved as an acne cream

What is clascoterone and how does it work against hair loss? Clascoterone blocks androgen receptors in the skin. It is approved only for acne; a scalp solution is still investigational for hair loss.

learn Neem Oil

Oil from the neem tree, used in traditional remedies

learn GT20029

Experimental topical drug designed to break down androgen receptors

What is GT20029 and how does it work as a topical anti-androgen for hair loss? GT20029 is an investigational topical androgen-receptor degrader. One 12-week Phase II trial in 180 Chinese men found two of four regimens beat placebo on hair count; it is not approved or available.

learn Cyproterone

a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor

learn Fluridil

How is Fluridil different from other DHT blockers like finasteride? Fluridil is a topical androgen-receptor blocker applied to the scalp, while finasteride is an oral 5-alpha-reductase inhibitor that lowers DHT throughout the body. Finasteride is FDA-approved and far better studied; Fluridil rests on one 43-man trial and is not licensed as a hair-loss medicine, so its long-term safety and effect size are unknown.

learn Bicalutamide

Can bicalutamide stop DHT from shrinking your hair follicles? Bicalutamide blocks androgens at the receptor rather than lowering DHT, and some dermatologists prescribe it off-label for women with pattern hair loss, although its US label says it should not be used in women. The one randomised trial (74 women, 2025) found it added no benefit to oral minoxidil, and the drug needs liver monitoring because its label warns of severe and fatal liver injury; it is contraindicated in pregnancy.

learn KX-826

Kintor Pharmaceutical: KX-826, a New Name in Hair Loss Research KX-826 (pyrilutamide) is an experimental topical androgen receptor blocker from Kintor Pharmaceutical and is not approved as a medicine anywhere. Its first China Phase III trial did not beat placebo; the company reported in March 2026 that a later Phase III of a 1.0% formulation met its primary endpoint, but these results are company announcements, not peer-reviewed, and long-term safety is unknown.

learn Pyrilutamide

Experimental topical anti-androgen, also known as KX-826

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