Title: For Breast Cancer Care, Radiation of Whole Breast May Be Best
Category: Health News
Created: 5/1/2012 6:05:00 PM
Last Editorial Review: 5/2/2012 12:00:00 AM

Title: Can Blood Test Predict Breast Cancer Risk?
Category: Health News
Created: 5/1/2012 4:05:00 PM
Last Editorial Review: 5/2/2012 12:00:00 AM

Title: Implants May Delay Breast Cancer Detection, Raise Death Risk
Category: Health News
Created: 4/30/2013 8:35:00 PM
Last Editorial Review: 5/1/2013 12:00:00 AM

Title: Joblessness an Unwanted Side Effect of Chemo for Breast Cancer
Category: Health News
Created: 4/28/2014 9:35:00 AM
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Title: 'Freezing' Technique May Work for Some Women With Early Breast Cancer
Category: Health News
Created: 4/30/2014 2:36:00 PM
Last Editorial Review: 5/1/2014 12:00:00 AM

Title: Breast-Feeding May Lower Breast Cancer Recurrence, Death: Study
Category: Health News
Created: 4/28/2015 12:00:00 AM
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Title: Low-Dose Aspirin May Lower Risk for Common Breast Cancer by 20 Percent
Category: Health News
Created: 5/1/2017 12:00:00 AM
Last Editorial Review: 5/2/2017 12:00:00 AM

Title: Drinking Boosts Breast Cancer Risk for Black Women, Too
Category: Health News
Created: 5/1/2017 12:00:00 AM
Last Editorial Review: 5/2/2017 12:00:00 AM

Title: Device Might Detect Breast Cancer-Linked Swelling Sooner
Category: Health News
Created: 5/3/2018 12:00:00 AM
Last Editorial Review: 5/4/2018 12:00:00 AM

Title: Breast Cancer Prognosis May Be Worse If Diagnosis Follows 'Negative' Mammogram
Category: Health News
Created: 5/3/2018 12:00:00 AM
Last Editorial Review: 5/4/2018 12:00:00 AM

Title: Study Supports Radiation for Early, Hormone-Driven Breast Cancer
Category: Health News
Created: 4/26/2019 12:00:00 AM
Last Editorial Review: 4/29/2019 12:00:00 AM

Title: Device Spots Lymphedema Early in Breast Cancer Patients, to Help Stop It
Category: Health News
Created: 5/2/2019 12:00:00 AM
Last Editorial Review: 5/3/2019 12:00:00 AM

Title: Tukysa Approved for Unresectable, Metastatic HER2-Positive Breast Cancer
Category: Health News
Created: 4/20/2020 12:00:00 AM
Last Editorial Review: 4/21/2020 12:00:00 AM

Title: FDA Approves Trodelvy for Metastatic Triple-Negative Breast Cancer
Category: Health News
Created: 4/24/2020 12:00:00 AM
Last Editorial Review: 4/24/2020 12:00:00 AM

The development of efficacious therapies targeting metastatic spread of breast cancer to the brain represents an unmet clinical need. Accordingly, an improved understanding of the molecular underpinnings of central nervous system spread and progression of breast cancer brain metastases (BCBM) is required. In this study, the clinical burden of disease in BCBM was investigated, as well as the role of aldehyde dehydrogenase 1A3 (ALDH1A3) in the metastatic cascade leading to BCBM development. Initial analysis of clinical survival trends for breast cancer and BCBM determined improvement of breast cancer survival rates; however, this has failed to positively affect the prognostic milestones of triple-negative breast cancer (TNBC) brain metastases (BM). ALDH1A3 and a representative epithelial–mesenchymal transition (EMT) gene signature (mesenchymal markers, CD44 or Vimentin) were compared in tumors derived from BM, lung metastases (LM), or bone metastases (BoM) of patients as well as mice after injection of TNBC cells. Selective elevation of the EMT signature and ALDH1A3 were observed in BM, unlike LM and BoM, especially in the tumor edge. Furthermore, ALDH1A3 was determined to play a role in BCBM establishment via regulation of circulating tumor cell adhesion and migration phases in the BCBM cascade. Validation through genetic and pharmacologic inhibition of ALDH1A3 via lentiviral shRNA knockdown and a novel small-molecule inhibitor demonstrated selective inhibition of BCBM formation with prolonged survival of tumor-bearing mice. Given the survival benefits via targeting ALDH1A3, it may prove an effective therapeutic strategy for BCBM prevention and/or treatment.

Dysregulation of DNA methylation is an established feature of breast cancers. DNA demethylating therapies like decitabine are proposed for the treatment of triple-negative breast cancers (TNBC) and indicators of response need to be identified. For this purpose, we characterized the effects of decitabine in a panel of 10 breast cancer cell lines and observed a range of sensitivity to decitabine that was not subtype specific. Knockdown of potential key effectors demonstrated the requirement of deoxycytidine kinase (DCK) for decitabine response in breast cancer cells. In treatment-naïve breast tumors, DCK was higher in TNBCs, and DCK levels were sustained or increased post chemotherapy treatment. This suggests that limited DCK levels will not be a barrier to response in patients with TNBC treated with decitabine as a second-line treatment or in a clinical trial. Methylome analysis revealed that genome-wide, region-specific, tumor suppressor gene–specific methylation, and decitabine-induced demethylation did not predict response to decitabine. Gene set enrichment analysis of transcriptome data demonstrated that decitabine induced genes within apoptosis, cell cycle, stress, and immune pathways. Induced genes included those characterized by the viral mimicry response; however, knockdown of key effectors of the pathway did not affect decitabine sensitivity suggesting that breast cancer growth suppression by decitabine is independent of viral mimicry. Finally, taxol-resistant breast cancer cells expressing high levels of multidrug resistance transporter ABCB1 remained sensitive to decitabine, suggesting that the drug could be used as second-line treatment for chemoresistant patients.

Triple-negative breast cancer (TNBC) accounts for 10 to 20% of breast cancer, with chemotherapy as its mainstay of treatment due to lack of well-defined targets, and recent genomic sequencing studies have revealed a paucity of TNBC-specific mutations. Recurrent gene fusions comprise a class of viable genetic targets in solid tumors;...

BACKGROUND:Radiotherapy for breast cancer has been implicated in the development of bronchiolitis obliterans organizing pneumonia (BOOP). Patients may be asymptomatic or may have pulmonary and constitutional symptoms that are moderate or severe. Postradiotherapy BOOP usually develops during the 12 months after completion of radiotherapy and is characterized by ground-glass opacities in the radiation-exposed lung and frequently in the non-irradiated lung.METHODS:An updated literature search and review was performed to update the systematic review we conducted in 2014. Ten new publications were identified: 2 Japanese epidemiological studies, 1 Japanese case series study, 6 case reports, and 1 review article.RESULTS:The incidence of postradiotherapy BOOP was 1.4% in both Japanese epidemiological studies. Risk factors included increasing age, cigarette smoking, and increasing central lung distance. The case reports included 7 women who had breast cancer postradiation BOOP and 1 woman who had an ataxia telangiectasia mutated (ATM) gene mutation, which may increase radiation sensitivity.CONCLUSION:Postradiotherapy BOOP in women with breast cancer occurs at a rate of 1.0–3.0% and may occur in women with immune system dysfunction and genetic mutations.

Triple-negative breast cancer (TNBC) is characterized by its aggressive biology, early metastatic spread, and poor survival outcomes. TNBC lacks expression of the targetable receptors found in other breast cancer subtypes, mandating use of cytotoxic chemotherapy. However, resistance to chemotherapy is a significant problem, encountered in about two-thirds of TNBC patients, and new strategies are needed to mitigate resistance. In this issue of the Journal of Biological Chemistry, Geck et al. report that TNBC cells are highly sensitive to inhibition of the de novo polyamine synthesis pathway and that inhibition of this pathway sensitizes cells to TNBC-relevant chemotherapy, uncovering new opportunities for addressing chemoresistance.

Treatment of patients with triple-negative breast cancer (TNBC) is limited by a lack of effective molecular therapies targeting this disease. Recent studies have identified metabolic alterations in cancer cells that can be targeted to improve responses to standard-of-care chemotherapy regimens. Using MDA-MB-468 and SUM-159PT TNBC cells, along with LC-MS/MS and HPLC metabolomics profiling, we found here that exposure of TNBC cells to the cytotoxic chemotherapy drugs cisplatin and doxorubicin alter arginine and polyamine metabolites. This alteration was because of a reduction in the levels and activity of a rate-limiting polyamine biosynthetic enzyme, ornithine decarboxylase (ODC). Using gene silencing and inhibitor treatments, we determined that the reduction in ODC was mediated by its negative regulator antizyme, targeting ODC to the proteasome for degradation. Treatment with the ODC inhibitor difluoromethylornithine (DFMO) sensitized TNBC cells to chemotherapy, but this was not observed in receptor-positive breast cancer cells. Moreover, TNBC cell lines had greater sensitivity to single-agent DFMO, and ODC levels were elevated in TNBC patient samples. The alterations in polyamine metabolism in response to chemotherapy, as well as DFMO-induced preferential sensitization of TNBC cells to chemotherapy, reported here suggest that ODC may be a targetable metabolic vulnerability in TNBC.

Breast cancer is a leading cause of death in women worldwide, but the underlying mechanisms of breast tumorigenesis remain unclear. Fructose-1, 6-bisphosphatase 1 (FBP1), a rate-limiting enzyme in gluconeogenesis, was recently shown to be a tumor suppressor in breast cancer. However, the mechanisms of FBP1 as a tumor suppressor in breast cancer remain to be explored. Here we showed that FBP1 bound to Notch1 in breast cancer cells. Moreover, FBP1 enhanced ubiquitination of Notch1, further leading to proteasomal degradation via FBXW7 pathway. In addition, we found that FBP1 significantly repressed the transactivation of Notch1 in breast cancer cells. Functionally, Notch1 was involved in FBP1-mediated tumorigenesis of breast cancer cells in vivo and in vitro. Totally, these findings indicate that FBP1 inhibits breast tumorigenesis by regulating Notch1 pathway, highlighting FBP1 as a potential therapeutic target for breast cancer.

Peptidyl arginine deiminase 4 (PAD4/PADI4) is a posttranslational modification enzyme that converts protein arginine or mono-methylarginine to citrulline. The PAD4-mediated hypercitrullination reaction in neutrophils causes the release of nuclear chromatin to form a chromatin network termed neutrophil extracellular traps (NET). NETs were first described as antimicrobial fibers that bind and kill bacteria. However, it is not known whether PAD4 can mediate the release of chromatin DNA into the extracellular space of cancer cells. Here, we report that murine breast cancer 4T1 cells expressing high levels of PADI4 can release cancer extracellular chromatin networks (CECN) in vitro and in vivo. Deletion of Padi4 using CRISPR/Cas9 abolished CECN formation in 4T1 cells. Padi4 deletion from 4T1 cells also reduced the rate of tumor growth in an allograft model, and decreased lung metastasis by 4T1 breast cancers. DNase I treatment, which degrades extracellular DNA including CECNs, also reduced breast to lung metastasis of Padi4 wild-type 4T1 cells in allograft experiments in the Padi4-knockout mice. We further demonstrated that DNase I treatment in this mouse model did not alter circulating tumor cells but decreased metastasis through steps after intravasation. Taken together, our genetic studies show that PAD4 plays a cell autonomous role in cancer metastasis, thus revealing a novel strategy for preventing cancer metastasis by inhibiting cancer cell endogenous PAD4.

The ₂ receptor is a potential in vivo target for measuring proliferative status in cancer. The feasibility of using N-(4-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)butyl)-2-(2-¹⁸F-fluoroethoxy)-5-methylbenzamide (¹⁸F-ISO-1) to image solid tumors in lymphoma, breast cancer, and head and neck cancer has been previously established. Here, we report the results of the first dedicated clinical trial of ¹⁸F-ISO-1 in women with primary breast cancer. Our study objective was to determine whether ¹⁸F-ISO-1 PET could provide an in vivo measure of tumor proliferative status, and we hypothesized that uptake would correlate with a tissue-based assay of proliferation, namely Ki-67 expression. Methods: Twenty-eight women with 29 primary invasive breast cancers were prospectively enrolled in a clinical trial (NCT 02284919) between March 2015 and January 2017. Each received an injection of 278–527 MBq of ¹⁸F-ISO-1 and then underwent PET/CT imaging of the breasts 50–55 min later. In vivo uptake of ¹⁸F-ISO-1 was quantitated by SUV_max and distribution volume ratios and was compared with ex vivo immunohistochemistry for Ki-67. Wilcoxon rank-sum tests assessed uptake differences across Ki-67 thresholds, and Spearman correlation tested associations between uptake and Ki-67. Results: Tumor SUV_max (median, 2.0 g/mL; range, 1.3–3.3 g/mL), partial-volume–corrected SUV_max, and SUV ratios were tested against Ki-67. Tumors stratified into the high–Ki-67 (≥20%) group had SUV_max greater than the low–Ki-67 (<20%) group (P = 0.02). SUV_max exhibited a positive correlation with Ki-67 across all breast cancer subtypes ( = 0.46, P = 0.01, n = 29). Partial-volume–corrected SUV_max was positively correlated with Ki-67 for invasive ductal carcinoma ( = 0.51, P = 0.02, n = 21). Tumor–to–normal-tissue ratios and tumor distribution volume ratio did not correlate with Ki-67 (P > 0.05). Conclusion: ¹⁸F-ISO-1 uptake in breast cancer modestly correlates with an in vitro assay of proliferation.

Vaccinia virus (VACV) is a double-stranded DNA virus that devotes a large portion of its 200 kbp genome to suppressing and manipulating the immune response of its host. Here, we investigated how targeted removal of immunomodulatory genes from the VACV genome impacted immune cells in the tumor microenvironment with the intention of improving the therapeutic efficacy of VACV in breast cancer. We performed a head-to-head comparison of six mutant oncolytic VACVs, each harboring deletions in genes that modulate different cellular pathways, such as nucleotide metabolism, apoptosis, inflammation, and chemokine and interferon signaling. We found that even minor changes to the VACV genome can impact the immune cell compartment in the tumor microenvironment. Viral genome modifications had the capacity to alter lymphocytic and myeloid cell compositions in tumors and spleens, PD-1 expression, and the percentages of virus-targeted and tumor-targeted CD8⁺ T cells. We observed that while some gene deletions improved responses in the nonimmunogenic 4T1 tumor model, very little therapeutic improvement was seen in the immunogenic HER2/neu TuBo model with the various genome modifications. We observed that the most promising candidate genes for deletion were those that interfere with interferon signaling. Collectively, this research helped focus attention on the pathways that modulate the immune response in the context of VACV oncolytic virotherapy. They also suggest that the greatest benefits to be obtained with these treatments may not always be seen in "hot tumors."

Purpose:

Human B7-H3 (hB7-H3) is a promising molecular imaging target differentially expressed on the neovasculature of breast cancer and has been validated for preclinical ultrasound (US) imaging with anti–B7-H3-antibody-functionalized microbubbles (MB). However, smaller ligands such as affibodies (ABY) are more suitable for the design of clinical-grade targeted MB.

Purpose:

Thymidine kinase 1 (TK1) is downstream to the CDK4/6 pathway, and TK activity (TKa) measured in blood is a dynamic marker of outcome in patients with advanced breast cancer (ABC). This study explores TK1 as a biomarker of palbociclib response, both in vitro and in patients with ABC.

Purpose:

Preclinical data demonstrating androgen receptor (AR)–positive (AR⁺) triple-negative breast cancer (TNBC) cells are sensitive to AR antagonists, and PI3K inhibition catalyzed an investigator-initiated, multi-institutional phase Ib/II study TBCRC032. The trial investigated the safety and efficacy of the AR-antagonist enzalutamide alone or in combination with the PI3K inhibitor taselisib in patients with metastatic AR⁺ (≥10%) breast cancer.

Background:

Visceral adipose tissue (VAT) may play a greater role than subcutaneous fat in increasing cancer risk but is poorly estimated in epidemiologic studies.

Women of Latin American origin in the United States are more likely to be diagnosed with advanced breast cancer and have a higher risk of mortality than non-Hispanic White women. Studies in U.S. Latinas and Latin American women have reported a high incidence of HER2 positive (+) tumors; however, the factors contributing to this observation are unknown. Genome-wide genotype data for 1,312 patients from the Peruvian Genetics and Genomics of Breast Cancer Study (PEGEN-BC) were used to estimate genetic ancestry. We tested the association between HER2 status and genetic ancestry using logistic and multinomial logistic regression models. Findings were replicated in 616 samples from Mexico and Colombia. Average Indigenous American (IA) ancestry differed by subtype. In multivariate models, the odds of having an HER2+ tumor increased by a factor of 1.20 with every 10% increase in IA ancestry proportion (95% CI, 1.07–1.35; P = 0.001). The association between HER2 status and IA ancestry was independently replicated in samples from Mexico and Colombia. Results suggest that the high prevalence of HER2+ tumors in Latinas could be due in part to the presence of population-specific genetic variant(s) affecting HER2 expression in breast cancer.Significance:The positive association between Indigenous American genetic ancestry and HER2+ breast cancer suggests that the high incidence of HER2+ subtypes in Latinas might be due to population and subtype-specific genetic risk variants.

Childbirth at any age confers a transient increased risk for breast cancer in the first decade postpartum and this window of adverse effect extends over two decades in women with late-age first childbirth (>35 years of age). Crossover to the protective effect of pregnancy is dependent on age at first pregnancy, with young mothers receiving the most benefit. Furthermore, breast cancer diagnosis during the 5- to 10-year postpartum window associates with high risk for subsequent metastatic disease. Notably, lactation has been shown to be protective against breast cancer incidence overall, with varying degrees of protection by race, multiparity, and lifetime duration of lactation. An effect for lactation on breast cancer outcome after diagnosis has not been described. We discuss the most recent data and mechanistic insights underlying these epidemiologic findings. Postpartum involution of the breast has been identified as a key mediator of the increased risk for metastasis in women diagnosed within 5–10 years of a completed pregnancy. During breast involution, immune avoidance, increased lymphatic network, extracellular matrix remodeling, and increased seeding to the liver and lymph node work as interconnected pathways, leading to the adverse effect of a postpartum diagnosis. We al discuss a novel mechanism underlying the protective effect of breastfeeding. Collectively, these mechanistic insights offer potential therapeutic avenues for the prevention and/or improved treatment of postpartum breast cancer.

The anti-cancer medicine venetoclax could improve the current therapy for estrogen receptor-positive (ER+) breast cancer, according to preclinical studies. The promising preclinical results for this 'triple therapy' have underpinned a phase 1 clinical trial in Melbourne, Australia, that is combining venetoclax with hormone therapy and CDK4/6 inhibitors in patients with ER+ breast cancer.

(MedPage Today) -- Five days of prophylactic granulocyte colony-stimulating factor (G-CSF) proved as effective as 7 to 10 days for preventing chemotherapy-induced febrile neutropenia in patients with early breast cancer, a randomized trial showed...

NICE has revealed that it has recommended the NHS use of Roche’s Kadcyla (trastuzumab emtansine) for HER2+ breast cancer in patients who have residual invasive disease in the breast or lymph nodes after receiving neoadjuvant treatment including a HER2-targeted agent.

Unlike its first U.K. reimbursement negotiations, Roche’s HER2 antibody-drug conjugate has won quick National Institute for Health and Care Excellence backing for routine NHS coverage to prevent HER2-positive breast cancer from returning after surgery in the so-called adjuvant setting.

Studies in patient samples and cell culture suggest let-7c, miR-99a and miR-125b could serve as prognostic markers in patients with estrogen receptor–positive luminal breast cancers.

A new study shows it's even higher for black women and frequent hair-dyers.

Top Breast Cancer Surgeons Discuss Advanced Surgical Options

The Wheels Up Pink Plane is the first-ever pink Beechcraft King Air 350i. Proceeds benefit the Dubin Breast Center at Mount Sinai in New York City. Westchester County Airport, White Plains, NY

Representational Image

Researchers have developed a remedy to thwart the metastatic spread of breast cancer, a leading cause of death among women. The findings, published in the journal Nature Communications, showed that by inhibiting a protein called TAK1, the researchers were able to reduce lung metastasis in mice with triple-negative breast cancer (TNBC).

TNBC is a deadliest type of breast cancer that comprises 20 per cent of breast cancer cases and is particularly difficult to treat.

"For this subtype of breast cancer, few treatment options are available to target metastasis, and typically, these treatments are associated with high toxicity," said co-author Min Yu, Assistant Professor from the University of Southern California.

"A better understanding of tumour cells and their interactions with organs and tissues could help us design targeted therapies specific for metastasis," Yu added.

According to the study, TAK1 enables malignant cells from the breast to survive in the lungs and form new metastatic tumours.

Metastasis are the most common cause of cancer-related death.

There is already a potential drug, called OXO -- that can inhibit TAK1 -- and presumably make it much more difficult for breast cancer cells to form lung metastases. However, OXO is not stable in the blood, and therefore would not work in patients, the researcher said.

The researchers developed a nanoparticle -- consisting of a tiny fatty sac -- that works like a smart bomb to carry drugs through the bloodstream and deliver them directly to tumours.

The scientists loaded this nanoparticle with OXO, and used it to treat mice that had been injected with human breast cancer cells. While OXO did not shrink primary tumours in the breast, it greatly reduced metastatic tumours in the lungs with minimal toxic side effects.

"For patients with triple-negative breast cancer, systemic chemotherapies are largely ineffective and highly toxic. So nanoparticles are a promising approach for delivering more targeted treatments, such as OXO, to stop the deadly process of metastasis," Yu noted.

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Changing lifestyle habits, increasing work pressure and stress levels have left modern-day individuals with no time to pay heed to their health and one disease that seems to be emerging because of irregular lifestyle is breast cancer. So make sure you are keeping a check on habits that can lead to this disease. Meher Patel, Director at DIVA, Centre for Breast Care (partner with cosmetic brand AVON's #PayAttention campaign that raises awareness on breast cancer), says:

1. Lack of physical activity: Don't be proud of being laid back. One of the main reasons is that excess weight causes the body to produce and circulate more estrogen and insulin, hormones that can stimulate cancer growth. It is crucial to keep your body fit at every stage of life continuously using all body parts to sweat out intoxicants that one consumes in this polluted, fast-paced world.

2. Alcohol and smoking: The downside of relaxing in this modern world. The more glasses of drinks you down on the weekend, or packets of cigarettes you puff up, the more you are at risk of breast cancer. Also, for the night owls, it is advisable to find the right balance since irregular patterns of work, long hours and late nights are more likely found to be struck by cancer in the later years of life.

3. Long night-shifts at work: After conducting a survey with 300 women-some of whom worked at night, some of whom didn't the survey found that those who had worked nights for 30 or more years were twice as likely to have developed the disease.

Renuka Prasad- Joint Secy (Hon.) at Indian Cancer Society too has problems to share that can lead to this disease.

4. Hormone replacement therapy (HRT) and contraceptive pills: Medical improvisations you don't need! Avoid using the viral popular HRT or contraception tablets to abnormally treat menopausal symptoms and unwanted pregnancy.

5. Overweight: Start eating healthy and avoid eating out. Putting on weight in adulthood (after the age of 18) with those extra munchies and burgers, or being overweight after menopause can also lead to breast cancer.

6. Other causes: A few other causes that women tend to overlook is the excess use of deodorants and perfumes, underwired bras, bumping or bruising of breasts, breast implants and abortions that can also be potential threats to breast cancer.

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According to a recent study, each year as many as 40,500 critically ill U.S. hospital patients die with an unknown medical condition that may have caused or contributed to their death.

High total fiber consumption was associated with a decreased risk of breast cancer, reports a new study. The findings of the study are published in the journal iCANCER/i.

It is widely accepted that higher levels of body fat increases the risk of developing breast cancer, as well as other cancers.Based on his ongoing research, Bing Li, Ph.