Glycoprotein M6A (GPM6A) is over-expressed in brain metastatic breast cancer.

Abstract

One study reported the incidence of central nervous system metastases in breast cancer patients treated with trastuzumab as 34% (1). We mined published microarray data (2, 3) to discover genes associated with brain metastasis in breast cancer. We identified significant differential expression of glycoprotein M6A, encoded by GPM6A (4, 5), in the brain metastases of patients with metastatic breast cancer. GPM6A may be relevant to the biology underlying colonization of the brain with metastatic breast cancer clones.