A study published in the open access journal Breast Cancer Research shows that patients with tumours that are negative for estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth receptor-2 (HER2) or that are HER2+/ER- appear to be most at risk from developing brain metastases. Survival is also correlated to the triple receptor status.
This is the first time that researchers have documented a possible link between breast cancer subtypes and the incidence and prognosis of brain metastases, which occur in up to one third of metastatic breast cancer patients.
A team from the National Cancer Centre in the Republic of Korea analysed data from 126 patients with brain metastases from a pool of 805 patients diagnosed with metastatic breast cancer and treated at the Centre. The presence or absence of ER, PR and HER2 were tested by immunohistochemical staining and/or fluorescent in situ hybridisation.
More than half of the patients with early (non-metastatic) breast cancer were of the luminal A subtype (ER or PR+ and HER2-). The proportion of patients with HER2+/ER- or triple-negative tumours was significantly higher among patients with brain metastases compared to the early breast cancer population, suggesting that these latter two subtypes were associated with the development of brain metastases.
The analysis also showed a correlation between the survival of patients and their triple receptor subtypes following the diagnosis of brain metastases, the survival time of which is just 3 – 6 months. Patients with luminal A (4.0 months) and triple-negative tumours (3.4 months) had a similar shorter survival time compared with luminal B (ER or PR+ and HER2+; 9.2 months) and HER2+/ER- (5.0 months) tumours.
Patients with HER2-positive tumours experienced a significant survival benefit if they were treated with trastuzumab after their brain metastases were diagnosed.
“Our study suggests that the triple-negative subtype should be added to the list of risk factors for developing BM,” remarks Jungsil Ro, the study's corresponding author. “Approximately 10-15% of all breast cancer presents this phenotype; they have a poor prognosis and are more likely to develop brain metastases. Triple receptor status can also help to predict survival even after brain metastases have been diagnosed. We now need to develop ways to screen for these subtypes and find the best ways to manage patients with this more aggressive phenotype.”
Charlotte Webber | alfa
Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University
Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News