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ONCOLOGY Vol 25 No 11

In this review, we describe the evidence linking obesity to breast cancer recurrence, discuss the potential biological mechanisms through which weight could impact breast cancer prognosis, and review the weight-loss intervention studies that have been performed in breast cancer populations to date.

The opening chapters in the investigation of poly(adenosine diphosphate [ADP]–ribose) polymerase (PARP) inhibitors as cancer therapeutics have been interpreted by some as a quantum leap forward in targeted and personalized medicine and by others as another example of disappointment following a flurry of promising preclinical and early clinical trials based on elegant biology.

Obesity rates in the United States have increased twofold in adults and threefold in children during the past 30 years.[1] Beyond its detrimental effects on cardiovascular health, obesity increases the risk of several cancers, including postmenopausal breast cancer,[2] and it is also associated with a higher risk of recurrence and death in those who develop breast cancer.[3]

During the 1970s and 80s, several researchers in Canada and in the United States, including those at the National Cancer Institute, studied Essiac. All failed to find any evidence of effectiveness.

In an online-first article in Nature Chemical Biology (DOI: 10.1038/nchembio.695), Sebastian Nijman of the CeMM–Research Center for Molecular Medicine of the Austrian Academy of Sciences in Vienna and his colleagues describe the development of a chemical genetic approach that has identified mechanisms that can lead to resistance to PI3K inhibitors used as cancer treatments.

A recent case report in the New England Journal of Medicine highlights the promising potentials of adoptive T-cell immunotherapy by redirecting them, through chimeric antigen receptors, as a novel and effective therapeutic modality for cancer.

Researchers have identified that “maintenance of global heterochromatin integrity” is a novel function of BRCA1 gene, and propose that this DNA-silencing function is linked to the role of BRCA1 as a tumor suppressor, in an article published in Nature.

As a medical oncologist who entered the field when there were perhaps 50 or so active drugs, I have become increasingly disturbed by the rising costs of cancer care. Of course, I am not alone in worrying about this.