Scientists have found that adding the hormone progesterone to their regular treatment could slow down breast cancer in 50% of it's sufferers.
A new drug which is cheap and safe could potentially help half of women with breast cancer to live longer according to scientists. The study conducted by researchers from the UK and Australia believe the findings are extremely significant and are hoping to progress to clinical trials very soon.
Professor Carlos Caldas from the University of Cambridge said, "It appears you control the tumors better, but to prove it is better in women with breast cancer we need to do the trial. It could be very significant. In early breast cancer you could increase the number of people being cured and in advanced breast cancer, where we're not curing; we could control the disease for longer."
Nearly 1.7 million women are diagnosed with breast cancer across the world every year and if this research is successful scientists suggest that around half could benefit from this treatment.
Meanwhile in the UK it is thought 25,000 women a year with breast tumors could benefit from the new treatment.
What the scientists have found in their research is that the hormone progesterone when combined with the drug tamoxifen which is currently the regular drug used for breast cancer treatment, it slowed down the growth of breast cancers.
The drug Tamoxifen is generally given to patients suffering from breast cancer after they have had surgery removing their tumors. What the researchers believe is that should the hormone progesterone work in human trials it would help women who have tumors that have become resistant to the drugs that are used more commonly to treat breast cancer.