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Taxomifen, a drug commonly used to treat breast cancer, may also help reduce the risk of death from lung cancer, said a study published in the US peer-reviewed journal Cancer on Monday.
Tamoxifen works by blocking estrogen. Previous studies have shown that women undergoing hormone replacement therapy to boost estrogen during menopause showed an increased risk of dying from lung cancer.
Based on the hypothesis that blocking estrogen might also cut lung cancer death risk, researchers examined data from 6,655 women diagnosed with breast cancer between 1980 and 2003 in Switzerland's Geneva Cancer Registry.
Close to half of those women, 3,066 (46 per cent), were given anti-estrogen drugs.
The registry's Elisabetta Rapiti, lead author of the study in Cancer, followed all those subjects until December 2007 and looked at how many developed lung cancer and how many died from lung cancer.
Rapiti found that among those taking anti-estrogen drugs, there were 87 per cent fewer deaths from lung cancer when compared to the general population.
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