Mangesh Thorat

Mangesh Thorat
Queen Mary, University of London | QMUL · Barts and The London School of Medicine and Dentistry

​MBBS, MS(Surgery), DNB(Surgery), MNAMS, FEBS, PhD

About

138
Publications
14,854
Reads
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16,291
Citations
Introduction
I am involved in 3 main aspects cancer prevention research that allow me to broadly cover the entire research pipeline. These are 1. cancer epidemiology with a focus on drug repurposing, 2. biomarkers and 3. cancer prevention / early detection clinical trials.
Additional affiliations
January 2019 - present
King's College London
Position
  • Visiting Senior Lecturer
June 2018 - present
Guy's and St Thomas' NHS Foundation Trust
Position
  • Consultant Oncoplastic Breast Surgeon (Locum)

Publications

Publications (138)
Article
Background Among women with breast cancer who undergo breast-conserving surgery (BCS), 20-25% require further surgery due to close or involved margins. Improved techniques are needed to assess resection margins. Purpose The study aims were to assess the feasibility of the combined techniques of Cerenkov Luminescence Imaging—Flexible AutoRadiograph...
Article
Background: Axillary surgery is now routinely de-escalated in clinically node negative breast cancer patients with limited axillary nodal burden (up to 2 involved sentinel nodes) based on the results of ACOSOG-Z0011 and AMAROS trials. However, patients with proven axillary metastasis following on ultrasound (AUS) guided core needle biopsy (CNB), un...
Article
Background: Two-week-wait Breast clinic appointments are known to generate anxiety in patients. One stop clinics that offer same day reporting of diagnostic investigations reduce the number of out-patient visits. It further reduces the stress and anxiety associated with benign disease as well as allows the patient sufficient time to come to terms w...
Article
Full-text available
Introduction The PROCESS guidelines were developed in 2016 in order to improve the reporting quality of surgical case series. Since its inception, it has been updated twice, in 2018 and 2020, and has been cited over 1000 times. PROCESS guidelines have enjoyed great acceptance within the surgical research community. Our aim is to update the PROCESS...
Article
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Background Strategies to increase physical activity (PA) and improve nutrition would contribute to substantial health benefits in the population, including reducing the risk of several types of cancers. The increasing accessibility of digital technologies mean that these tools could potentially facilitate the improvement of health behaviours among...
Article
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Background Strategies to reduce alcohol consumption would contribute to substantial health benefits in the population, including reducing cancer risk. The increasing accessibility and applicability of digital technologies make these powerful tools suitable to facilitate changes in behaviour in young people which could then translate into both immed...
Article
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Background: The Surgical CAse REport (SCARE) guidelines were first published in 2016 as a tool for surgeons to document and report their surgical cases in a standardised and comprehensive manner. However, with advances in technology and changes in the healthcare landscape, it is important to revise and update these guidelines to ensure they remain...
Article
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Introduction Strengthening The Reporting Of Cohort Studies in Surgery (STROCSS) guidelines were developed in 2017 in order to improve the reporting quality of observational studies in surgery and updated in 2019. In order to maintain relevance and continue upholding good reporting quality among observational studies in surgery, we aimed to update S...
Article
Introduction Strengthening The Reporting Of Cohort Studies in Surgery (STROCSS) guidelines were developed in 2017 in order to improve the reporting quality of observational studies in surgery and updated in 2019. In order to maintain relevance and continue upholding good reporting quality among observational studies in surgery, we aimed to update S...
Article
Full-text available
Introduction Strengthening The Reporting Of Cohort Studies in Surgery (STROCSS) guidelines were developed in 2017 in order to improve the reporting quality of observational studies in surgery and updated in 2019. In order to maintain relevance and continue upholding good reporting quality among observational studies in surgery, we aimed to update S...
Article
Background: Endocrine therapy is effective at preventing or treating breast cancer. Some forms of endocrine therapy have been shown to reduce mammographic density. Reduced mammographic density for women receiving endocrine therapy could be used to estimate the chance of breast cancer returning or developing breast cancer in the first instance (a p...
Article
Background: Brief interventions (BI) involving physical activity (PA) screening and/or advice are recommended in primary care. However, the frequency of delivery is unknown. Aim: To examine the extent to which PA BI are delivered in primary care and explore factors associated with delivery, receipt, and patient receptivity. Design: A mixed methods...
Article
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Background Physical activity (PA) brief interventions (BIs) involving screening and/or advice are recommended in primary care but frequency of delivery is unknown. Aim To examine the extent to which PA BIs are delivered in primary care, and explore factors associated with delivery, receipt, and patient receptivity. Design and setting A mixed-meth...
Article
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Purpose: HER2 is overexpressed more frequently in ductal carcinoma in situ (DCIS) than in invasive breast cancer but its prognostic significance and predictive role for radiotherapy has not been clearly established. We investigated the prognostic and predictive value of HER2 overexpression in DCIS. Experimental design: HER2 expression was evalua...
Article
Purpose: The prognostic value of ER/PgR expression in ductal carcinoma in situ (DCIS) is unclear. We observed multi-clonality when evaluating ER/PgR expression in the UK/ANZ DCIS trial, therefore, we investigated the prognostic role of both uni-clonal and multi-clonal ER/PgR expression in DCIS. Experimental design: Formalin-fixed paraffin embedd...
Article
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Introduction: The SCARE Guidelines were first published in 2016 and were last updated in 2018. They provide a structure for reporting surgical case reports and are used and endorsed by authors, journal editors and reviewers, in order to increase robustness and transparency in reporting surgical cases. They must be kept up to date in order to drive...
Article
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Introduction: The PROCESS Guidelines were first published in 2016 and were last updated in 2018. They provide a structure for reporting surgical case series in order to increase reporting robustness and transparency, and are used and endorsed by authors, journal editors and reviewers alike. In order to drive forwards reporting quality, they must be...
Conference Paper
Full-text available
Background: Ductal Carcinoma in Situ (DCIS) of the breast comprises a diverse group of cancerous lesions confined to the breast ducts. About 25% of all breast cancers in the US are DCIS and women with DCIS have a 10 times higher lifetime risk of progressing to invasive breast cancer (IBC). While DCIS is treated routinely with breast conserving ther...
Article
Women at high risk of developing breast cancer are a heterogeneous group of women including those with and without high-risk germline mutation/s. Prevention in these women requires a personalised and multidisciplinary approach. Preventive therapy with selective oestrogen receptor modulators (SERMs) like tamoxifen and aromatase inhibitors (AIs) subs...
Article
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Background: Oncotype DX (ODx) is a 12-gene assay assessing the recurrence risk (high, intermediate, and low) of ductal carcinoma in situ (pre-invasive breast cancer), which guides clinicians regarding prescription of radiotherapy. However, ODx is expensive, time-consuming, and tissue-destructive. In addition, the actual prognostic meaning for the...
Article
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Late disease recurrence (more than 5 years after initial diagnosis) represents a significant challenge in the treatment and management of estrogen receptor positive breast cancer. An International Workshop was convened in Toronto, Canada, in February, 2018 to review the current understanding of late recurrence and to identify critical issues that r...
Article
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Disease recurrence (locoregional, distant) exerts a significant impact on the survival of estrogen receptor positive breast cancer patients. Many of these recurrences occur late, more than 5 years after original diagnosis, and represent a major obstacle to the effective treatment of this disease. Indeed, methods to identify patients at risk of late...
Article
p> Background A review of breast screening highlighted the need to reduce overdiagnosis. Ductal Carcinoma In-Situ (DCIS) contributes significantly to this overdiagnosis. Epithelial cells in DCIS are as genetically advanced as those in invasive disease, focusing attention on the tumour microenvironment (ME). A key components of the ME in DCIS is t...
Article
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Introduction Uptake of preventive therapies for breast cancer is low. We examined whether women at increased risk of breast cancer can be categorized into groups with similar medication beliefs, and whether belief group membership was prospectively associated with uptake of preventive therapy. Patients and Methods Women (n = 732) attending an appo...
Article
Introduction: The SCARE Guidelines were published in 2016 to provide a structure for reporting surgical case reports. Since their publication, SCARE guidelines have been widely endorsed by authors, journal editors, and reviewers, and have helped to improve reporting transparency of case reports across a range of surgical specialties. In order to e...
Article
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This is a protocol for a Cochrane Review (Prognosis). The objectives are as follows: Endocrine therapy for breast cancer prevention has been shown to reduce risk, and for treatment of early stage oestrogen receptor-positive (ER-positive) breast cancer to reduce breast cancer mortality. The objective of the review is to synthesise available evidence...
Article
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Introduction: The development of reporting guidelines over the past 20 years represents a major advance in scholarly publishing with recent evidence showing positive impacts. Whilst over 350 reporting guidelines exist there are few that are specific to surgery. Here we describe the development of the STROCSS guideline (Strengthening the Reporting...
Article
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Developments in breast cancer treatment have resulted in reduction in breast cancer mortality in the developed world. However incidence continues to rise and greater use of preventive interventions including the use of therapeutic agents is needed to control this burden. High quality evidence from 9 major trials involving more than 83000 participan...
Article
Background: The prognostic abilities of most gene expression signatures in breast cancer are often due to detection of proliferative activity measured from expression of genes regulated as a function of cell cycle progression. Cell Cycle Progression (CCP) score is an important prognostic factor in prostate cancer, and has shown promising results fo...
Article
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Introduction: Case reports have been a long held tradition within the surgical literature. Reporting guidelines can improve transparency and reporting quality. However, recent consensus-based guidelines for case reports (CARE) are not surgically focused. Our objective was to develop surgical case report guidelines. Methods: The CARE statement was u...
Article
Background: Low dose tamoxifen has shown comparable antiproliferative activity to 20 mg/day in biomarker trials, but its clinical efficacy is unclear. We assessed the effect of low dose tamoxifen, 10 mg on alternate day in most, on ipsilateral recurrence in high risk DCIS patients treated in a single institution. Methods: Following breast conservin...
Article
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Guidelines from different organisations regarding the use of aspirin for primary prevention vary despite being based on similar evidence. Translating these in practice presents a further major challenge. The benefit–harm balance tool developed by Puhan et al. (BMC Med 13:250, 2015) for aspirin can overcome some of these difficulties and is therefor...
Article
Background: Majority of studies investigating prognostic role of ER and PgR expression in ductal carcinoma in situ (DCIS) have failed to show a significant relationship with recurrence. Branched evolutionary tumour growth and resulting intratumour heterogeneity is now increasingly acknowledged in a variety of cancers. DCIS offers the opportunity to...
Article
Background: As compared to invasive breast cancer (IBC), HER2 is much more frequently overexpressed in ductal carcinoma (DCIS). Unlike IBC, the prognostic significance of HER2 overexpression remains to be established in DCIS and large studies to investigate its predictive role are lacking. We investigated the prognostic and predictive relevance of...
Article
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The global cancer burden continues to rise and the war on cancer can only be won if improvements in treatment go hand in hand with therapeutic cancer prevention. Despite the availability of several efficacious agents, utilisation of preventive therapy has been poor due to various barriers, such as the lack of physician and patient awareness, fear o...
Article
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Letrozole, an aromatase inhibitor, is a commonly used neo-adjuvant drug to treat hormone-sensitive breast cancer. There have been a few cases of aromatase inhibitor induced vasculitis but the first case of letrozole-induced vasculitis was reported from Switzerland in 2014 (Digklia et al.) [1] Presentation of case We report the case of a 72-year-old...
Article
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There are three main ways in which women can be identified as being at high risk of breast cancer i) family history of breast and/or ovarian cancer, which includes genetic factors ii) mammographically identified high breast density, and iii) certain types of benign breast disease. The last category is the least common, but in some ways the easiest...
Article
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Objectives This study evaluated the Xpert HPV Assay in women attending screening in general practice by comparing Xpert with two established HPV tests, cytology and histology. Methods A prospective study in women aged 20–60 years attending screening in Bristol, Edinburgh and London using residual Preservcyt cytology samples. Sample order was rando...
Article
JC reports grants from Cancer Research UK, Prostate Cancer UK, and the Association for International Cancer Research, during this study; grants and personal fees from Myriad Genetics; personal fees and non-financial support from Bayer; and membership of the advisory board of Myriad Genetics and Bayer, outside the submitted work. MAT reports grants...
Article
A careful assessment of benefits and harms is required to assess suitability of aspirin as a prophylactic public health measure. However, comprehensive population-level data on harms are lacking. We collected and synthesized age and sex-specific data on harms relevant to aspirin use in average-risk individuals aged 50 years or older. We conducted s...
Article
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Prostate cancer is a common malignancy in men and the worldwide burden of this disease is rising. Lifestyle modifications such as smoking cessation, exercise, and weight control offer opportunities to reduce the risk of developing prostate cancer. Early detection of prostate cancer by prostate-specific antigen (PSA) screening is controversial, but...
Article
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Prostate cancer has a variable clinical behaviour with frequently unpredictable outcome. DNA methylation plays an important role in determining the biology of cancer but prognostic information is scanty. We assessed the potential of gene-specific DNA methylation changes to predict death from prostate cancer in a cohort of untreated men in the UK. T...
Article
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Background: Accumulating evidence supports an effect of aspirin in reducing overall cancer incidence and mortality in the general population. We reviewed current data and assessed the benefits and harms of prophylactic use of aspirin in the general population. Methods: The effect of aspirin for site-specific cancer incidence and mortality, cardi...
Book
Prostate cancer is by far the most common cancer in men and the second leading cause of death due to cancer. It comprises a mixed group of tumours displaying varying clinical behaviour: while some have a very aggressive course, others are rather indolent. Prevention of prostate cancer and discrimination between aggressive and indolent forms are imp...
Article
Since its first synthesis in 1897, several medicinal roles and mechanisms of action of aspirin have become apparent; the latest among these being its role in cancer prevention and treatment. A large body of evidence supports aspirin’s effect in reducing cancer incidence and cancer mortality, but duration of use needs to be at least 5 years. The ben...
Article
T regulatory cells, a subset of T lymphocytes, function to suppress immune responses. FOXP3, a member of the forkhead family of transcription factors, is a good marker for T regulatory cells. Since sentinel nodes are important sites of immunomodulation in breast cancer, we studied the association between T regulatory cells and nodal metastasis usin...
Article
We have previously shown that multi-parameter analysis of the DNA replication initiation machinery (Mcm2-7, geminin) and mitotic proteins (Plk1, Aurora A, H3S10ph), expressed during various phases of the cell division cycle, provides a method to accurately assess the proliferative state of dynamic tumour cell populations. We have shown that this no...
Article
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Background: Heat shock protein 27 (Hsp-27) encoded by gene HSPB1 is a critical regulator of the behavioral phenotype of human prostate cancer (PCa) cells, enhanced expression being associated with highly aggressive disease and poor clinical outcome. In contrast, the protein is not expressed in PCas of low malignant potential. To gain insight into t...
Article
505 Background: Brain metastases (BM) of breast cancer constitute an important part of therapeutic failures and are associated with severe morbidity and mortality. The risk of BM is particularly high in HER2+ advanced breast cancer pts. We earlier developed in this group a 13-gene signature strongly predicting for rapid development of BM (J Clin On...
Article
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Aberrant DNA methylation plays a pivotal role in carcinogenesis and its mapping is likely to provide biomarkers for improved diagnostic and risk assessment in prostate cancer (PCa). We quantified and compared absolute methylation levels among 28 candidate genes in 48 PCa and 29 benign prostate hyperplasia (BPH) samples using the pyrosequencing (PSQ...
Article
The use of clinicopathologic features in decision-making in early stage estrogen receptor (ER)-positive breast cancer (BC) may lead to over or under treatment. We investigated the effect of the Oncotype Dx (ODX) on chemotherapy (CTX) utilization in two cancer centers. 276 cases of node-negative ER-positive BC had ODX between 2005 and 2009. Age at d...
Article
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Background: The need for new prognostic factors in breast cancer is ever increasing as breast cancer management evolves. Aberrant DNA methylation plays a pivotal role in cancer development and progression; DNA methylation-based biomarkers may provide independent prognostic information. We used pyrosequencing to investigate the prognostic potential...
Article
Protein kinase C betaII (PKCβII) represents a novel potential target for anticancer therapies in breast cancer. In order to identify patient subgroups which might benefit from PKC-targeting therapies, we investigated the expression of PKCβII in human breast cancer cell lines and in a tissue microarray (TMA). We first screened breast cancer cell lin...
Article
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The classification of breast cancer into multiple molecular subtypes has necessitated the need for biomarkers that can assess tumor progression and the effects of chemopreventive agents on specific breast cancer subtypes. The goal of this study was to identify biomarkers whose expression are altered along with estrogen receptor α (ERα) in the polyo...
Article
We searched the 170 year electronic archive of the BMJ for mentions of four communicable diseases (malaria, cholera, influenza, and tuberculosis) and four non-communicable diseases (ischaemic heart disease, hypertension, obesity, and lung …
Article
Glucocorticoids play an essential role in embryonic development and tissue homeostasis and possess important anti-inflammatory and immunosuppressive properties. Due to their very wide spectrum of activity, Glucocorticoids are one of the most commonly used drugs-used in the treatment of asthma, arthritis, autoimmune diseases and shock/SIRS. glucocor...