Does mainstream BRCA testing affect surgical decision-making in newly-diagnosed breast cancer patients?

Background: Germline pathogenic variants mutations) in the BRCA1 and BRCA2 genes cause an increased risk of breast cancer and ovarian cancer. Mainstream cancer genetic testing (MCG) was introduced for breast cancer patients in our unit in 2013. Non-geneticist clinicians have been trained to offer genetic testing during initial treatment planning. We assessed the impact of timely test results on surgical decision-making. Methods: Women who had undergone mainstream genetic testing for breast cancer between September 2013 and September 2018 were identified from a prospective database. Surgical data were collected retrospectively. Results: 580 eligible women had mainstream genetic testing. For 474 this was their first breast cancer diagnosis. The median age was 46 years (interquartile range (IQR) 38–57). The indications were: age ≤45 years for 233 (49%); triple negative disease for 192 women (40.5%); bilateral breast cancer age \u3c60 for 39 (8%) and other for 72 (14%) women. The median time for test initiation to result was 18 days (IQR 15-21). 302 (64% received results before surgery. 88% of those found to have a BRCA mutation before surgery opted for bilateral mastectomy (compared to 5% with BRCA wild type). An additional 106 patients had a new diagnosis on a background of previous treatment. Of these all with a pathogenic variant chose bilateral mastectomy. Conclusion: Timely BRCA gene testing influences surgeons’ and patients’ choice of surgery. It reassures women with a negative result and allows those with a positive result to take an active decision about the management of their future risk

Does mainstream BRCA testing affect surgical decision-making in newly-diagnosed breast cancer patients?

Background: Germline pathogenic variants mutations) in the BRCA1 and BRCA2 genes cause an increased risk of breast cancer and ovarian cancer. Mainstream cancer genetic testing (MCG) was introduced for breast cancer patients in our unit in 2013. Non-geneticist clinicians have been trained to offer genetic testing during initial treatment planning. We assessed the impact of timely test results on surgical decision-making. Methods: Women who had undergone mainstream genetic testing for breast cancer between September 2013 and September 2018 were identified from a prospective database. Surgical data were collected retrospectively. Results: 580 eligible women had mainstream genetic testing. For 474 this was their first breast cancer diagnosis. The median age was 46 years (interquartile range (IQR) 38–57). The indications were: age ≤45 years for 233 (49%); triple negative disease for 192 women (40.5%); bilateral breast cancer age \u3c60 for 39 (8%) and other for 72 (14%) women. The median time for test initiation to result was 18 days (IQR 15-21). 302 (64% received results before surgery. 88% of those found to have a BRCA mutation before surgery opted for bilateral mas- tectomy (compared to 5% with BRCA wild type). An additional 106 patients had a new diagnosis on a back- ground of previous treatment. Of these all with a pathogenic variant chose bilateral mastectomy. Conclusion: Timely BRCA gene testing influences surgeons’ and patients’ choice of surgery. It reassures women with a negative result and allows those with a positive result to take an active decision about the management of their future risk

The potential role of three-dimensional surface imaging as a tool to evaluate aesthetic outcome after Breast Conserving Therapy (BCT)

To establish whether objective measurements of symmetry of volume and shape using three-dimensional surface imaging (3D-SI) can be used as surrogate markers of aesthetic outcome in patients who have undergone breast conserving therapy (BCT). Women who had undergone unilateral BCT in the preceding 1-6 years were invited to participate. Participants completed a satisfaction questionnaire (BREAST-Q) and underwent 3D-SI. Volume and surface symmetry were measured on the images. Assessment of aesthetic outcome was undertaken by a panel of clinicians. The Kruskal-Wallis test was used to assess the relationship between volume and shape symmetry measurements with the panel score. Spearman's rho correlations were used to assess the relationship between the measurements and patient satisfaction. 200 women participated. Median volume symmetry was 87% (IQR 78-93) and shape symmetry was 5.9 mm (IQR 4.2-8.0). The participants were grouped according to panel assessment of aesthetic outcome (poor, fair, good, excellent) and the median volume and shape symmetry was calculated for each group. Volume symmetry significantly differed between the groups. Post hoc pairwise comparisons demonstrated that these differences existed between panel scores of fair versus good and good versus excellent. Median shape symmetry also differed according to patient panel groups with four significant pairwise comparisons between poor versus good, poor versus excellent, fair versus good and fair versus excellent. There was a significant but weak correlation of both volume symmetry and surface asymmetry with BREAST-Q scores (correlation coefficients 0.187 and -0.229, respectively). Breast volume and shape symmetry are both associated with panel assessment scores and patient satisfaction. The objective volume and shape symmetry measures were strongly associated with panel assessment scores, such that a 3D-SI tool could replace panel assessment as a faster and more objective method of evaluating aesthetic outcomes

Breast cancer management pathways during the COVID-19 pandemic: outcomes from the UK ‘Alert Level 4’ phase of the B-MaP-C study

Abstract: Background: The B-MaP-C study aimed to determine alterations to breast cancer (BC) management during the peak transmission period of the UK COVID-19 pandemic and the potential impact of these treatment decisions. Methods: This was a national cohort study of patients with early BC undergoing multidisciplinary team (MDT)-guided treatment recommendations during the pandemic, designated ‘standard’ or ‘COVID-altered’, in the preoperative, operative and post-operative setting. Findings: Of 3776 patients (from 64 UK units) in the study, 2246 (59%) had ‘COVID-altered’ management. ‘Bridging’ endocrine therapy was used (n = 951) where theatre capacity was reduced. There was increasing access to COVID-19 low-risk theatres during the study period (59%). In line with national guidance, immediate breast reconstruction was avoided (n = 299). Where adjuvant chemotherapy was omitted (n = 81), the median benefit was only 3% (IQR 2–9%) using ‘NHS Predict’. There was the rapid adoption of new evidence-based hypofractionated radiotherapy (n = 781, from 46 units). Only 14 patients (1%) tested positive for SARS-CoV-2 during their treatment journey. Conclusions: The majority of ‘COVID-altered’ management decisions were largely in line with pre-COVID evidence-based guidelines, implying that breast cancer survival outcomes are unlikely to be negatively impacted by the pandemic. However, in this study, the potential impact of delays to BC presentation or diagnosis remains unknown

A anatomical study of the skin, nipple and areola of the breast

Background: Although effective local control of breast cancer is the primary goal of surgery, the long term aesthetic outcome is also important. Nipple-sparing mastectomy aims to address this but there is no consensus on its clinical application. The aim of this thesis is to provide a scientific basis for nipple-sparing mastectomy. Methods: Data were derived from a consecutive series of patients who underwent nipple-sacrificing mastectomy. The anatomical work used histological coronal sections through nipple specimens and three-dimensional reconstructions produced from serial sections. Ductal, vascular and smooth muscle anatomy of the nipple and features of the anatomy of the skin were investigated. Anatomical findings were applied to evaluate surgical and pathological approaches. Results: The incidence of occult nipple involvement in a series of women undergoing therapeutic skin-sparing mastectomy (and therefore potentially eligible for nipplesparing) was 21 %. Nipple involvement was associated with larger tumour diameter and smaller distance from the nipple on multivariate analysis. A predictive model was developed. The median number of ducts in a cross section through the nipple papilla was 23. Three dimensional reconstruction of duct anatomy shows a regular pattern of ducts, several of which may originate from common orifice on the nipple surface. Some ducts do originate on the areola rather than the nipple tip. The central duct bundle narrows to fonn a waist. The average duct diameter at the tip was O.06mm. In a three-dimensional reconstruction of the nipple, blood supply appears to arrive both via deep vessels and a more superficial supply. Small vessels are distributed throughout the nipple cross section. Ex vivo experiments demonstrated opportunities for modification of surgical and pathological technique. Conclusions: This work adds to current knowledge about nipple-sparing mastectomy_ In the therapeutic setting, the risk of occult involvement of the nipple can be predicted. Anatomical findings delineating duct - vascular inter-relationships help inform decisions about surgical technique.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Does mainstream BRCA testing affect surgical decision-making in newly-diagnosed breast cancer patients?

Background: Germline pathogenic variants mutations) in the BRCA1 and BRCA2 genes cause an increased risk of breast cancer and ovarian cancer. Mainstream cancer genetic testing (MCG) was introduced for breast cancer patients in our unit in 2013. Non-geneticist clinicians have been trained to offer genetic testing during initial treatment planning. We assessed the impact of timely test results on surgical decision-making. Methods: Women who had undergone mainstream genetic testing for breast cancer between September 2013 and September 2018 were identified from a prospective database. Surgical data were collected retrospectively. Results: 580 eligible women had mainstream genetic testing. For 474 this was their first breast cancer diagnosis. The median age was 46 years (interquartile range (IQR) 38–57). The indications were: age ≤45 years for 233 (49%); triple negative disease for 192 women (40.5%); bilateral breast cancer age <60 for 39 (8%) and other for 72 (14%) women. The median time for test initiation to result was 18 days (IQR 15-21). 302 (64% received results before surgery. 88% of those found to have a BRCA mutation before surgery opted for bilateral mastectomy (compared to 5% with BRCA wild type). An additional 106 patients had a new diagnosis on a background of previous treatment. Of these all with a pathogenic variant chose bilateral mastectomy. Conclusion: Timely BRCA gene testing influences surgeons’ and patients’ choice of surgery. It reassures women with a negative result and allows those with a positive result to take an active decision about the management of their future risk