Cancers, Vol. 12, Pages 722: Integrative Analyses of Multilevel Omics Reveal Preneoplastic Breast to Possess a Molecular Landscape That is Globally Shared with Invasive Basal-Like Breast Cancer (Running Title: Molecular Landscape of Basal-Like Breast Cancer Progression)

Cancers, Vol. 12, Pages 722: Integrative Analyses of Multilevel Omics Reveal Preneoplastic Breast to Possess a Molecular Landscape That is Globally Shared with Invasive Basal-Like Breast Cancer (Running Title: Molecular Landscape of Basal-Like Breast Cancer Progression) Cancers doi: 10.3390/cancers12030722 Authors: Zhenlin Ju Anjana Bhardwaj Matthew D. Embury Harpreet Singh Preethi H. Gunaratne Isabelle Bedrosian Jing Wang To characterize molecular changes accompanying the stepwise progression to breast cancer and to identify functional target pathways, we performed miRNA and RNA sequencing using MCF10A cell lines based model system that replicates the multi-step progression involving normal, preneoplastic, ductal carcinoma in situ, and invasive carcinoma cells, where the carcinoma most resemble the basal-like subgroup of human breast cancers. These analyses suggest that 70% of miRNA alterations occurred during the initial progression from normal to a preneoplastic stage. Most of these early changes reflected a global upregulation of miRNAs. This was consistent with a global increase in the miRNA-processing enzyme DICER, which was upregulated as a direct result of loss of miRNA let-7b-5p. Several oncogenic and tumor suppressor pathways were also found to change early, prior to histologic stigmata of cancer. Our finding that most genomic changes in the progression to basal-like breast cancer occurred in the earliest stages of histologic progression has impl...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research

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A new analysis shows that any diagnosis of ductal carcinoma in situ is associated with a long-term risk of invasive breast cancer and that treatment lowers this risk.Medscape Medical News
Source: Medscape Hematology-Oncology Headlines - Category: Cancer & Oncology Tags: Hematology-Oncology News Source Type: news
ah Hosseini The majority of cancer evolution studies involve individual-based approaches that neglect the population dynamics necessary to build a global picture of cancer evolution for each cancer type. Here, we conducted a population-based study in breast cancer to understand the timing of malignancy evolution and its correlation to the genetic evolution of pathological stages. In an omics integrative approach, we integrated gene expression and genomic aberration data for pre-invasive (ductal carcinoma in situ; DCIS, early-stage) and post-invasive (invasive ductal carcinoma; IDC, late-stage) samples and investigated ...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Source: BMJ Comments - Category: General Medicine Source Type: forums
FRIDAY, May 29, 2020 -- Women with cancerous cells in their milk ducts -- also known as DCIS -- are at a high risk for developing fatal breast cancer, British researchers report. DCIS is short for ductal carcinoma in situ, an early form of breast...
Source: Drugs.com - Daily MedNews - Category: General Medicine Source Type: news
In conclusion, preoperatively diagnosed non-mass-type DCIS represented an underestimation in approximately 27% of cases. In particular, the presence of a clinically abnormal palpation increases the chance of upstaging to invasive cancer. PMID: 32454975 [PubMed]
Source: Clinical Breast Cancer - Category: Cancer & Oncology Authors: Tags: Mol Clin Oncol Source Type: research
THURSDAY, May 28, 2020 -- Women with screening-detected ductal carcinoma in situ (DCIS) have increased long-term risks for invasive breast cancer and breast cancer death, according to a study published online May 27 in The BMJ. Gurdeep S. Mannu,...
Source: Drugs.com - Pharma News - Category: Pharmaceuticals Source Type: news
Source: BMJ - Category: General Medicine Source Type: research
Conclusion: We improved the prediction performance of DCIS upstaging by embedding two related pathology classes in different training phases. Significance: The three new strategies of embedding related class data all outperformed the baseline model, thus demonstrating not only feature similarities among these different classes, but also the potential for improving classification by using other related classes.
Source: IEEE Transactions on Biomedical Engineering - Category: Biomedical Engineering Source Type: research
CONCLUSION: These findings support the use of prophylactic NSM in high-risk patients. The nipples could be preserved in the majority of patients, postoperative complication rates were low, and, with limited follow-up, there were no new breast cancers. PMID: 32432359 [PubMed - as supplied by publisher]
Source: The British Journal of Surgery - Category: Surgery Authors: Tags: Br J Surg Source Type: research
Conclusions: Majority of noises were not reproducible. To add evaluation of reproducibility to conventional reading could be helpful to reduce false-positives without decreasing sensitivity, and can improve diagnostic performance of dbPET.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Breast Cancer I Source Type: research
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