“Myriad Genetics, Inc. (MYGN) today announced that a comparative analysis of commercially available prognostic breast cancer tests in patients with early-stage breast cancer has been published in JAMA Oncology. A key finding is that Myriad’s EndoPredict® (EPClin) significantly outperformed Oncotype DX® Recurrence Score at predicting the risk of disease recurrence in patients with early-stage breast cancer.
“In the article, Sestak et al. compared the prognostic value that four different commercial tests add to the Clinical Treatment Score (nodal status, tumor size, grate, age, endocrine treatment) for predicting distant recurrence (0-10 years) and late-distant recurrence (5-10 years) of breast cancer. The analysis included data from 774 postmenopausal women with ER+/HER2- breast cancer with node-negative disease or up to three positive lymph nodes, which is the most common form of breast cancer.”
“The FDA has approved a novel breast-specific stereotactic body radiotherapy (SBRT) device known as GammaPod as a treatment for patients with early breast cancer, based on findings from a 17-patient study.
“In the small clinical trial, GammaPod was effectively used to deliver a single ‘boost’ radiation dose of 8 Gy directly to the tumor, while only eliciting grade 1 adverse events (AEs). The system uses a vacuum-assisted breast cup guided by a CT simulator with 1 mm slice thickness to immobilize the breast, which ensures the accurate delivery of radiation to the tumor.”
“Undergoing acupuncture significantly reduced joint pain related to treatment with aromatase inhibitors (AIs) in postmenopausal women with early-stage breast cancer compared with both sham acupuncture and no treatment at all, according to data from the Southwest Oncology Group (SWOG) S1200 trial presented at the 2017 San Antonio Breast Cancer Symposium, held December 5–9.”
“Even small tumours can be aggressive, according to a study in patients with early stage breast cancer that will be presented at the ESMO 2017 Congress in Madrid. Researchers found that nearly one in four small tumours were aggressive and patients benefited from chemotherapy. Aggressive tumours could be identified by a 70-gene signature.
” ‘Our results challenge the assumption that all small tumours are less serious and do not need adjuvant chemotherapy,’ said lead author Dr Konstantinos Tryfonidis, a researcher at the European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium.”
“A new study finds that more than half of women with early stage breast cancer considered an aggressive type of surgery to remove both breasts. The way women generally approach big decisions, combined with their values, impacts what breast cancer treatment they consider, the study also found.
“Contralateral prophylactic mastectomy – a procedure to remove both breasts when cancer occurs in only one breast – has become increasingly popular in recent years, with more than 20 percent of patients opting for it. For most women, removing the unaffected breast does not improve survival.”
“Breast cancer patients who have radiotherapy targeted at the original tumour site experience fewer side effects five years after treatment than those who have whole breast radiotherapy, and their cancer is just as unlikely to return, according to trial results published* in The Lancet (link is external) today (Wednesday).
“The Cancer Research UK-funded IMPORT LOW trial** revealed that five years after treatment, almost all patients were disease free.***
“Moffitt Cancer Center researchers launched a first of its kind study comparing the long-term benefits of radiation therapy in women with breast cancer either before surgery (neoadjuvant) or after surgery (adjuvant). Their study, published in the June 30 issue of Breast Cancer Research, found that patients who have neoadjuvant radiation therapy have a significantly lower risk of developing a second primary tumor at any site.
“The majority of patients who have early stage breast cancer have surgery to remove their tumor or a complete mastectomy. Surgery is commonly followed by radiation therapy, which has been shown to increase relapse-free survival. However, in some cases, patients may require neoadjuvant radiation therapy to decrease the size of the tumor before surgery. Currently, there are no studies that have analyzed the long-term effects of neoadjuvant radiation therapy on breast cancer patients.”
“A duration of endocrine therapy beyond 5 years has gained traction in the treatment of endocrine receptor (ER)-positive early-stage breast cancer. Long-term use of aromatase inhibitors (AIs), however, may increase the risk of bone loss and bone fracture. Data suggest that the use of bone-targeted agents can substantially reduce the risk of osteoporotic complications associated with AI use, and even reduce the risk of bone recurrence in postmenopausal women with early-stage breast cancer.”
“Women with early-stage breast cancer and an intermediate risk recurrence score from a 21-gene expression assay may be able to avoid chemotherapy, according to a retrospective study published in Cancer.
” ‘Through years of research discoveries, it became clear that we were overtreating many women with breast cancer, especially those with early-stage breast cancer,’ Carlos H. Barcenas, MD, assistant professor of breast medical oncology at The University of Texas MD Anderson Cancer Center, said in a press release. ‘In addition to chemotherapy’s obvious side effects, there were also long-term complications for these women as survivors.’ ”