ER(+)/HER2(+) and ER −/HER2(+) breast cancers might have different intracranial recurrence patterns after brain-directed radiation for brain metastases

Source: Breast Cancer Research and Treatment - Category: Cancer & Oncology Source Type: research

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Conclusions: These analyses show a trend that asymptomatic patients have less severe metastatic brain disease and despite less intensive local BM therapy still have a better outcome (statistically significant for a cohort of HER2-positive patients) than patients who present with symptomatic BM, although a lead time bias of the earlier diagnosis cannot be ruled out. Our analysis is of clinical relevance in the context of potential trials examining the benefit of early detection and treatment of BM.
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
In conclusion, it remains unclear if brain-specific regional and temporal changes occur in the expression of the different APP variants during AD progression. Since APP is also found in blood cells, assessing the changes in APP mRNA expression in peripheral blood cells from AD patients has been considering an alternative. However, again the quantification of APP mRNA in peripheral blood cells has generated controversial results. Brain APP protein has been analyzed in only a few studies, probably as it is difficult to interpret the complex pattern of APP variants and fragments. We previously characterized the soluabl...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Abstract The failure to treat and control the growth of metastases is the main cause of death in breast cancer (BC) patients. Compared to the traditional method of analyzing circulating tumor DNA (ctDNA), capturing intact circulating tumor cells (CTCs) allows us to more accurately characterize mutations and identify suitable targeted therapies. We used CellCollector to collect peripheral CTCs. Thirty metastatic breast cancer (MBC) patients were enrolled, and 17 were analyzed with next-generation sequencing (NGS) methods. Clinical characteristics were analyzed along with the CTCs enumeration and detection rates. Wh...
Source: Neoplasma - Category: Cancer & Oncology Authors: Tags: Neoplasma Source Type: research
(Northwestern University) When breast cancer spreads to the brain, the prognosis is grim. Patients only have about six months to live. Women with HER2-positive breast cancer tend to develop brain metastases in up to 55% of cases. Chemotherapy drugs targeting breast cancer cells in the brain aren't effective, because they can't cross the blood-brain-barrier. But a new combination therapy targeting breast cancer tumors in the brain dramatically decreased tumor size and increased survival in a preclinical study.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news
In this study, we conducted a systematic analysis to determine the regulation of TUBB3 expression in breast cancer metastases to the brain and strategically target these metastases using vinorelbine (VRB), a drug approved by the U.S. Food and Drug Administration (FDA). We found that human epidermal growth factor receptor 2 (HER2) signaling regulates TUBB3 expression in both trastuzumab-sensitive and trastuzumab-resistant neoplastic cells. We further discovered that bromodomain and extra-terminal domain (BET) inhibition increases TUBB3 expression, rendering neoplastic cells more susceptible to apoptosis by VRB. Orthotopic x...
Source: Science Translational Medicine - Category: Biomedical Science Authors: Tags: Research Articles Source Type: research
Mechanisms driving tumor progression from less aggressive subtypes to more aggressive states represent key targets for therapy. We identified a subset of luminal A primary breast tumors that give rise to HER2-enriched (HER2E) subtype metastases, but remain clinically HER2 negative (cHER2–). By testing the unique genetic and transcriptomic features of these cases, we developed the hypothesis that FGFR4 likely participates in this subtype switching. To evaluate this, we developed 2 FGFR4 genomic signatures using a patient-derived xenograft (PDX) model treated with an FGFR4 inhibitor, which inhibited PDX growth in vivo....
Source: Journal of Clinical Investigation - Category: Biomedical Science Authors: Source Type: research
Conditions:   Breast Cancer;   Brain Metastases;   HER2-positive Breast Cancer;   CNS Disease Interventions:   Drug: Tucatinib;   Drug: Pembrolizumab;   Drug: Trastuzumab Sponsors:   Reva Basho;   Merck Sharp & Dohme Corp.;   Seattle Genetics, Inc. Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials
Abstract Prior to the introduction of trastuzumab, the first targeted anti-HER2 agent, in 1998, patients diagnosed with HER2-positive breast cancer felt like they were being handed a death sentence. Despite treatment with aggressive chemotherapy, their tumors recurred faster, more often spread to brain and liver, and were associated with higher rates of death than HER2-negative tumors. HER2-positive breast cancer was also more prevalent in younger patients, making the diagnosis even more devastating. However, in the 1980s, cancer researcher Axel Ullrich, PhD, and oncologist Dennis Slamon, MD, PhD, recognized that ...
Source: Oncology (Williston Park, N.Y.) - Category: Cancer & Oncology Authors: Tags: Oncology (Williston Park) Source Type: research
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