Male hormones ‘drive breast cancer’

April 10, 2013
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anti-androgen compoundScientists have designed drugs that block the action of male hormones

US scientists say they have found a new target to beat breast cancer – male sex hormones, or androgens.

The University of Colorado team discovered that many breast cancers possess androgen receptors on their surface, and that male hormones like testosterone fuel the tumour’s growth.

Drugs to block these receptors could offer another way to fight the disease, a meeting of the American Association for Cancer Research heard.

They plan clinical trials to test this.

Dr Jennifer Richer and colleagues say more than three-quarters of all breast cancers possess androgen receptors and therefore might benefit from anti-androgen therapy.

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It’s still early days for this research but there’s growing interest in the androgen receptor’s role in breast cancer as a potential new route to tackle the disease”

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Dr Emma Smith of Cancer Research UK

This type of treatment is already used for prostate cancer.

Hormones

Experts already know that some breast cancers grow under the influence of female hormones, like oestrogen and progesterone.

The widely-used breast cancer drug Tamoxifen works by blocking oestrogen receptors to halt these cancers.

Dr Richer’s research suggests male hormones are also important drivers.

And adding anti-androgen drugs to our armoury against breast cancer could improve treatment success.

They found many breast tumours possessed both oestrogen and androgen receptors.

These responded to anti-androgen therapy in the laboratory.

Patients who who relapse while on Tamoxifen but who also have androgen receptors might have the most to gain from this new type of treatment, according to Dr Richer.

She said: “We are excited to move towards clinical trials of anti-androgen therapies in breast cancer.”

Dr Emma Smith of Cancer Research UK said: “It’s still early days for this research but there’s growing interest in the androgen receptor’s role in breast cancer as a potential new route to tackle the disease.

“Cancer Research UK scientists are among those working on whether targeting this receptor could help treat both those women who develop resistance to other treatments and those who have fewer treatment options.”

Article source: http://www.bbc.co.uk/news/health-22076692#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa The feed :

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