The present invention relates to the treatment of breast cancer, more particularly triple negative breast cancer (TNBC), with the use of an inhibitor of Interleukin 1 Receptor Associated Kinase 1 (IRAK1) such as ginsenosides. It also relates to a method for aiding in categorising or determining prognosis in a breast cancer patient or in selecting a therapeutic strategy comprising assessing the level of IRAK1 nucleic acid, protein or activity in a sample and, in some aspects, further assessing the paclitaxel resistance status of the patient and if the patient is resistant to paclitaxel therapy, treating the patient with an inhibitor of IRAK1 activity. In addition, a screening method for identifying a compound useful for treating breast cancer comprises determining the effect of a test compound on IRAK1 nucleic acid, protein or activity level and selecting a compound that reduces said level.
