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Ataxia-telangiectasia mutated (ATM) kinase is a one of the main guardian of genome stability and plays a central role in the DNA damage response (DDR). The deregulation of these pathways is strongly linked to cancer initiation and progression as well as to the development of therapeutic approaches. These observations, along with reports that identify ATM… (More)
ATM kinase preserves genomic stability by acting as a tumour suppressor. However, its identification as a component of several signalling networks suggests a dualism for ATM in cancer. Here we report that ATM expression and activity promotes HER2-dependent tumorigenicity in vitro and in vivo. We reveal a correlation between ATM activation and the reduced… (More)
ATM kinase is a gatekeeper of genome stability. However, its role in several other signaling pathways suggests that it might not always act as a tumor suppressor. Here, we discuss recent data that unveil a function of ATM as a tumor promoter in HER2-positive breast cancer.