A new DNA test could help screen whether patients require the treatment or not, according to a new international trial.

A new DNA test could help screen whether patients require the treatment or not, according to a new international trial.

A new DNA test could help screen whether patients require the treatment or not, according to a new international trial.

A new DNA test could help screen whether patients require the treatment or not, according to a new international trial.

A new DNA test could help screen whether patients require the treatment or not, according to a new international trial.

Many people with breast cancer can safely avoid chemotherapy with the use of a gene test, potentially sparing them unnecessary side effects without increasing the risk of the cancer returning, a large international clinical trial led by UCL has found.