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BackgroundWhile population mammographic screening identifies early-stage breast cancers (ESBCs; ductal carcinoma in situ [DCIS] and invasive disease stages 1–3A), commentaries suggest that harms from overdiagnosis and overtreatment may outweigh the benefits. Apparent benefits to patients with screen-detected cancers may be due to selection bias from exclusion of interval cancers (ICs). Treatment intensity is rarely discussed, with an assumption that all ESBCs are treated similarly. We hypothesized that women diagnosed while in a screening program would receive less-intense treatment than those never or not recently screened (NRS).MethodsThis was a retrospective analysis of all women aged 50–69 years managed for ESBC (invasive or DCIS) during the period 2007–2013 within a single service, comparing treatment according to screening status. Data on demographics, detection, pathology, and treatment were derived from hospital, cancer registry, and screening service records.ResultsOverall, 622 patients were active screeners (AS) at diagnosis (569 screen-detected and 53 ICs) and 169 patients were NRS. AS cancers were smaller (17 mm vs. 26 mm, p < 0.0001), less likely to involve nodes (26% vs. 48%, p < 0.0001), and lower grade. For invasive cancer, NRS patients were more likely to be recommended for mastectomies [35% vs. 16%; risk ratio(RR) 2.2, p < 0.0001], axillary dissection (43% vs. 19%; RR 2.3, p < 0.0001), adjuvant chemotherapy (65% vs. 37%; RR 1.7, p < 0.0001), and postmastectomy radiotherapy (58% vs. 39%; RR 1.5, p = 0.04).ConclusionParticipants in population screening diagnosed with ESBC receive substantially less-intense treatment than non-participants. Differences persist when potential overdiagnosis is taken into account; these differences should be factored into debates around mammographic screening.

The spectrum of genomic alterations in ductal carcinoma in situ (DCIS) is relatively unexplored, but is likely to provide useful insights into its biology, its progression to invasive carcinoma and the risk of recurrence. DCIS (n=20) with a range of phenotypes was assessed by massively parallel sequencing for mutations and copy number alterations and variants validated by Sanger sequencing. PIK3CA mutations were identified in 11/20 (55%), TP53 mutations in 6/20 (30%), and GATA3 mutations in 9/20 (45%). Screening an additional 91 cases for GATA3 mutations identified a final frequency of 27% (30/111), with a high proportion of missense variants (8/30). TP53 mutations were exclusive to high grade DCIS and more frequent in PR-negative tumors compared with PR-positive tumors (P=0.037). TP53 mutant tumors also had a significantly higher fraction of the genome altered by copy number than wild-type tumors (P=0.005), including a significant positive association with amplification or gain of ERBB2 (P<0.05). The association between TP53 mutation and ERBB2 amplification was confirmed in a wider DCIS cohort using p53 immunohistochemistry as a surrogate marker for TP53 mutations (P=0.03). RUNX1 mutations and MAP2K4 copy number loss were novel findings in DCIS. Frequent copy number alterations included gains on 1q, 8q, 17q, and 20q and losses on 8p, 11q, 16q, and 17p. Patterns of genomic alterations observed in DCIS were similar to those previously reported for invasive breast cancers, with all DCIS having at least one bona fide breast cancer driver event. However, an increase in GATA3 mutations and fewer copy number changes were noted in DCIS compared with invasive carcinomas. The role of such alterations as prognostic and predictive biomarkers in DCIS is an avenue for further investigation.

Background Current understanding of the lymphatic system of the breast is derived mainly from the work of the anatomist Sappey in the 1850s, with many observations made during the development and introduction of breast lymphatic mapping and sentinel node biopsy contributing to our knowledge. Methods Twenty four breasts in 14 fresh human cadavers (5 male, 9 female) were studied. Lymph vessels were identified with hydrogen peroxide and injected with a lead oxide mixture and radiographed. The specimens were cross sectioned and radiographed to provide three dimensional images. Lymph (collecting) vessels were traced from the periphery to the first-tier lymph node. Results Lymph collecting vessels were found evenly spaced at the periphery of the anterior upper torso draining radially into the axillary lymph nodes. As they reached the breast some passed over and some through the breast parenchyma, as revealed in the cross-section studies. The pathways showed no significant difference between male and female specimens. We found also perforating lymph vessels that coursed beside the branches of the internal mammary vessels, draining into the ipsilateral internal mammary lymphatics. In some studies one sentinel node in the axilla drained almost the entire breast. In most more than one sentinel node was represented. Conclusion These anatomical findings are discordant with our current knowledge based on previous studies and demand closer examination by clinicians. These anatomical studies may help explain the percentage of false-negative sentinel node biopsy studies and suggest the peritumoral injection site for accurate sentinel lymph node detection.

IntroductionBreast cancer is the most commonly diagnosed cancer among women worldwide. Survivors often experience physical and psychological effects arising from breast cancer and its treatment, which can last months and years, adversely impacting quality of life. As the number of early breast cancer survivors increases, models of specialist-led follow-up care in hospital settings are not sustainable and evidence suggests that they may not meet survivors’ needs. Nurse-enabled, shared-care, follow-up models between cancer specialist and primary care teams have potential to address this need.Methods and analysisThe proposed research is a multicentre, prospective, pragmatic, stepped-wedge cluster-randomised trial designed to test the effectiveness and implementation of IBIS-Survivorship, a follow-up care model for patients with early breast cancer who have completed primary treatment. The IBIS-Survivorship intervention involves a nurse-led consultation, development of a Survivorship Care Plan and case-conferencing between a breast care nurse and the patient’s primary care provider. This study seeks to recruit 1079 breast cancer survivors across six cancer centres (clusters) in Australia. Health-related quality of life at 12 months assessed by the Functional Assessment of Cancer Therapy - Breast Cancer questionnaire will be the primary endpoint, along with a range of patient-reported outcomes, safety indicators and cost-effectiveness measures as secondary endpoints. General and generalised linear mixed models will be used to assess the effectiveness of the intervention versus usual care. Implementation and process outcomes will be assessed using the Reach Effectiveness Adoption Implementation Maintenance framework.Ethics and disseminationEthical approval was provided by the Metro South Hospital and Health Service Human Research Ethics Committee (HREC/2020/QMS/59892) and reciprocally across the other five trial sites under National Mutual Acceptance arrangements. Results will be disseminated through peer-reviewed academic journal publications and presentations at national and international conferences.Trial registrationAustralia and New Zealand Clinical Trials Registry (ANZCTR) Trial ID: ACTRN12621000188831.

Purpose The purposes of this study are to examine the course and prevalence of anxiety and depression over 24 months in women with newly diagnosed breast and gynaecologic cancer and, controlling for demographic and clinical confounders, to test the role of neuroticism and psychiatric history in determining outcome 6, 12, 18 and 24 months post-diagnosis. Methods Participants completed the Hospital Anxiety and Depression Scale—anxiety subscale and Centre for Epidemiological Studies Depression Scale on an 8-weekly basis from diagnosis until 96 weeks. Changes over time were analyzed with repeated measures ANOVA. Hierarchical linear regression, adjusted a priori for age, chemotherapy and radiation treatment, living alone, education and tumour stream were used to predict anxiety and depression. Results Participants were 105 women (66 breast, 39 gynaecologic). Rates of anxiety (18.1 %) and depression (33.3 %) were highest at diagnosis. Average rates of anxiety and depression were 5.9 and 22.4 %, respectively. Average scores of anxiety and depression were highest at diagnosis, with improvement at 8 and 40 weeks, respectively, subsequently maintained. Morbidity at diagnosis was particularly acute among women with a treatment history of anxiety/depression or with high neuroticism. These three variables were the best and only predictors over 24 months. Conclusions Women are most vulnerable to anxiety and depression at diagnosis, with improvement over time. Morbidity rates are lower than reported elsewhere. Women with high neuroticism and a psychiatric history are at greatest risk for future morbidity after adjusting for confounders. Early identification of these women plus heightened surveillance or early referral to psychosocial services may protect against longer-term morbidity.

IntroductionPatients with node-positive breast cancer having primary surgery currently undergo axillary node clearance (ANC) to reduce the risk of breast cancer recurrence. Evidence that this highly morbid procedure improves survival is lacking, but approximately 30% of patients will develop lifelong complications which significantly impact their quality of life.Targeted axillary dissection (TAD) may be a safe, less morbid alternative to ANC and will be evaluated in the upcoming Targeted Axillary Dissection versus axillary node clearance in patients with POsitive axillary Lymph nodes in Early breast cancer (TADPOLE) randomised controlled trial.TAD is not currently routine practice in patients having primary surgery, so it is vital that the procedure is performed in an agreed upon, standardised way within the trial and procedure fidelity monitored to ensure the results are generalisable and will be accepted by the surgical community. Robust surgical quality assurance (SQA) is essential. Here we describe the first phase of the TADPOLE SQA, a consensus process with the breast surgical community to agree upon how (1) surgery should be performed and standardised; (2) procedure fidelity will be monitored and (3) requirements for surgeon credentialling within the trial.Methods and analysisThe consensus process will have three phases:Generation of a long list of possible components of TAD from a scoping review and expert opinion. Identified items will be categorised and formatted into Delphi consensus questionnaire items.At least two rounds of an online Delphi survey in which at least 100 breast cancer surgeons will rate the importance of mandating/prohibiting, standardising and/or monitoring each component.A consensus meeting with surgeons to discuss, agree upon and ratify the approach to SQA within TADPOLE.Ethics and disseminationEthical approval has been obtained from the University of Bristol Faculty of Health Sciences Ethics Committee. Educational materials including videos and webinars will be developed and shared with surgeons participating in TADPOLE. Results will be presented at national/international meetings and published in peer-reviewed journals.

Various histopathological, clinical and imaging parameters have been evaluated to identify a subset of women diagnosed with lesions with uncertain malignant potential (B3 or BIRADS 3/4A lesions) who could safely be observed rather than being treated with surgical excision, with little impact on clinical practice. The primary reason for surgery is to rule out an upgrade to either ductal carcinoma in situ or invasive breast cancer, which occurs in up to 30% of patients. We hypothesised that the stromal immune microenvironment could indicate the presence of carcinoma associated with a ductal B3 lesion and that this could be detected in biopsies by counting lymphocytes as a predictive biomarker for upgrade. A higher number of lymphocytes in the surrounding specialised stroma was observed in upgraded ductal and papillary B3 lesions than non-upgraded ( p  < 0.01, negative binomial model, n  = 307). We developed a model using lymphocytes combined with age and the type of lesion, which was predictive of upgrade with an area under the curve of 0.82 [95% confidence interval 0.77–0.87]. The model can identify some patients at risk of upgrade with high sensitivity, but with limited specificity. Assessing the tumour microenvironment including stromal lymphocytes may contribute to reducing unnecessary surgeries in the clinic, but additional predictive features are needed.

Australia introduced COVID-19 infection prevention and control measures in early 2020. To help prepare health services, the Australian Government Department of Health commissioned a modelled evaluation of the impact of disruptions to population breast, bowel, and cervical cancer screening programmes on cancer outcomes and cancer services. We used the Policy1 modelling platforms to predict outcomes for potential disruptions to cancer screening participation, covering periods of 3, 6, 9, and 12 mo. We estimated missed screens, clinical outcomes (cancer incidence, tumour staging), and various diagnostic service impacts. We found that a 12-mo screening disruption would reduce breast cancer diagnoses (9.3% population-level reduction over 2020–2021) and colorectal cancer (up to 12.1% reduction over 2020–21), and increase cervical cancer diagnoses (up to 3.6% over 2020–2022), with upstaging expected for these cancer types (2, 1.4, and 6.8% for breast, cervical, and colorectal cancers, respectively). Findings for 6–12-mo disruption scenarios illustrate that maintaining screening participation is critical to preventing an increase in the burden of cancer at a population level. We provide programme-specific insights into which outcomes are expected to change, when changes are likely to become apparent, and likely downstream impacts. This evaluation provided evidence to guide decision-making for screening programmes and emphasises the ongoing benefits of maintaining screening in the face of potential future disruptions.

Purpose Genomic tests improve accuracy of risk prediction for early breast cancers but these are expensive. This study evaluated the clinical utility of EndoPredict®, in terms of impact on adjuvant therapy recommendations and identification of parameters to guide selective application. Methods Patients with ER-positive, HER2-negative, and early-stage invasive breast cancer were tested with EndoPredict®. Two cohorts were recruited: one consecutively and another at clinical team discretion. Systemic treatment recommendations were recorded before and after EndoPredict® results were revealed to the multidisciplinary team. Results 233 patients were recruited across five sites: 123 consecutive and 110 at clinical team discretion. In the consecutive cohort 50.6% (62/123) cases were classified high risk of recurrence by EndoPredict®, compared with 62.7% (69/110) in the selective cohort. A change in treatment recommendation was significantly more likely ( p  < 0.0001) in the selective cohort (43/110, 39.1%) compared to the consecutive group (11/123, 8.9%). The strongest driver of selective recruitment was intermediate grade histology, whilst logistic regression modelling demonstrated that nodal status ( p  < 0.001), proliferative rate ( p  = 0.001), and progesterone receptor positivity ( p  < 0.001) were the strongest discriminators of risk. Conclusion Whilst molecular risk can be predicted by traditional variables in a high proportion of cases, EndoPredict® had a greater impact on treatment decisions in those cases selected for testing at team discretion. This is indicative of the robust ability of the clinical team to identify cases most likely to benefit from testing, underscoring the value of genomic tests in the oncologists’ tool kit.

Imaging of biological matter by using fluorescent nanoparticles (NPs) is becoming a widespread method for in vitro imaging. However, currently there is no fluorescent NP that satisfies all necessary criteria for short-term in vivo imaging: biocompatibility, biodegradability, photostability, suitable wavelengths of absorbance and fluorescence that differ from tissue auto-fluorescence, and near infrared (NIR) emission. In this paper, we report on the photoluminescent properties of magnesium oxide (MgO) NPs that meet all these criteria. The optical defects, attributed to vanadium and chromium ion substitutional defects, emitting in the NIR, are observed at room temperature in NPs of commercial and in-house ball-milled MgO nanoparticles, respectively. As such, the NPs have been successfully integrated into cultured cells and photostable bright in vitro emission from NPs was recorded and analyzed. We expect that numerous biotechnological and medical applications will emerge as this nanomaterial satisfies all criteria for short-term in vivo imaging.