BAG1 and breast cancer: Rorke et al (2001) have studied the expression of BAG-1 by immunohistochemistry in non-small cell lung cancer. Consistent with studies in other tumour types they found that approximately two thirds of tumours expressed high levels of BAG-1. In particular they found no correlations between BAG-1 and clinico-pathological parameters, but did find that, similar to the study of Turner et al (2001) in breast cancer, cytoplasmic expression of BAG-1 independently correlated with improved overall survival.