Publications by authors named "Lisa E M Hopcroft"

Background: Some studies have shown that the incidence of type 2 diabetes increases after a diagnosis of COVID-19, although the evidence is not conclusive. However, the effects of the COVID-19 vaccine on this association, or the effect on other diabetes subtypes, are not clear. We aimed to investigate the association between COVID-19 and incidence of type 2, type 1, gestational and non-specific diabetes, and the effect of COVID- 19 vaccination, up to 52 weeks after diagnosis.

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Aims: The COVID-19 pandemic created unprecedented pressure on healthcare services. This study investigates whether disease-modifying antirheumatic drug (DMARD) safety monitoring was affected during the COVID-19 pandemic.

Methods: A population-based cohort study was conducted using the OpenSAFELY platform to access electronic health record data from 24.

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Infection with SARS-CoV-2 is associated with an increased risk of arterial and venous thrombotic events, but the implications of vaccination for this increased risk are uncertain. With the approval of NHS England, we quantified associations between COVID-19 diagnosis and cardiovascular diseases in different vaccination and variant eras using linked electronic health records for ~40% of the English population. We defined a 'pre-vaccination' cohort (18,210,937 people) in the wild-type/Alpha variant eras (January 2020-June 2021), and 'vaccinated' and 'unvaccinated' cohorts (13,572,399 and 3,161,485 people respectively) in the Delta variant era (June-December 2021).

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Macrophages are fundamental cells of the innate immune system that support normal haematopoiesis and play roles in both anti-cancer immunity and tumour progression. Here we use a chimeric mouse model of chronic myeloid leukaemia (CML) and human bone marrow (BM) derived macrophages to study the impact of the dysregulated BM microenvironment on bystander macrophages. Utilising single-cell RNA sequencing (scRNA-seq) of Philadelphia chromosome (Ph) negative macrophages we reveal unique subpopulations of immature macrophages residing in the CML BM microenvironment.

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  • A national study in Scotland examined how SARS-CoV-2 infection and COVID-19 vaccination during pregnancy affect maternal and neonatal health outcomes in women with singleton pregnancies lasting 20 weeks or longer.
  • Results showed that SARS-CoV-2 infection is linked to higher risks of preterm births, severe maternal complications, and venous thromboembolism.
  • Conversely, the study found no increased risks associated with COVID-19 vaccination, indicating it is a safe choice for pregnant women to help protect themselves and their babies.
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  • - The COVID-19 pandemic significantly disrupted NHS primary care services, leading to the creation of the OpenSAFELY Service Restoration Observatory (SRO) to track clinical activity trends throughout this period.
  • - An open-source data management framework was developed to analyze electronic health records from 48 million adults, focusing on key measures like blood pressure monitoring and asthma reviews from January 2019 to December 2021.
  • - While most clinical activities showed signs of recovery by April 2021, some measures like medication and blood pressure reviews continued to experience notable reductions, indicating lasting impacts from the pandemic.
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Background: There are no effective treatments for brain tumor-related fatigue. We studied the feasibility of two novel lifestyle coaching interventions in fatigued brain tumor patients.

Methods: This phase I/feasibility multi-center RCT recruited patients with a clinically stable primary brain tumor and significant fatigue (mean Brief Fatigue Inventory [BFI] score ≥ 4/10).

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  • The study aimed to determine patient eligibility and describe the coverage of antiviral drugs and neutralising monoclonal antibodies (nMAB) as treatments for COVID-19 in community settings in England.
  • A retrospective analysis was conducted on data from 23.4 million people, focusing on outpatients with COVID-19 who were at high risk for severe outcomes between December 2021 and April 2022.
  • Out of 93,870 high-risk patients identified, only 19,040 (20%) received treatment, with variations in treatment rates based on factors like age, ethnic background, risk group, and NHS region.
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Purpose: The development of oestrogen resistance is a major challenge in managing hormone-sensitive metastatic breast cancer. Saracatinib (AZD0530), an oral Src kinase inhibitor, prevents oestrogen resistance in animal models and reduces osteoclast activity. We aimed to evaluate the efficacy of saracatinib addition to aromatase inhibitors (AI) in patients with hormone receptor-positive metastatic breast cancer.

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Evidence on associations between COVID-19 vaccination or SARS-CoV-2 infection and the risk of congenital anomalies is limited. Here we report a national, population-based, matched cohort study using linked electronic health records from Scotland (May 2020-April 2022) to estimate the association between COVID-19 vaccination and, separately, SARS-CoV-2 infection between six weeks pre-conception and 19 weeks and six days gestation and the risk of [1] any major congenital anomaly and [2] any non-genetic major congenital anomaly. Mothers vaccinated in this pregnancy exposure period mostly received an mRNA vaccine (73.

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Background: Data analysis is used to identify signals suggestive of variation in treatment choice or clinical outcome. Analyses to date have generally focused on a hypothesis-driven approach.

Objective: This study aimed to develop a hypothesis-free approach to identify unusual prescribing behavior in primary care data.

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Tyrosine kinase inhibitors (TKI) have revolutionised the treatment of CML. However, TKI do not eliminate the leukaemia stem cells (LSC), which can re-initiate the disease. Thus, finding new therapeutic targets in CML LSC is key to finding a curative treatment.

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  • A national study in Scotland investigated the safety of COVID-19 vaccines in early pregnancy by comparing vaccinated women to unvaccinated controls for their risk of miscarriage and ectopic pregnancy.
  • The study included 18,780 women for miscarriage analysis and 10,570 for ectopic pregnancy, finding no significant association between vaccination and either of these outcomes.
  • The results support ongoing public health recommendations that COVID-19 vaccination is safe for pregnant women and is the best way to protect themselves and their babies from the virus.
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Background: Evidence suggests that the SARS-CoV-2 omicron (B.1·1.529) is associated with lower risks of adverse outcomes than the delta (B.

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Background: Surgery for renal cell carcinoma (RCC) with venous tumour thrombus (VTT) extension into the renal vein (RV) and/or inferior vena cava (IVC) has high peri-surgical morbidity/mortality. NAXIVA assessed the response of VTT to axitinib, a potent tyrosine kinase inhibitor.

Methods: NAXIVA was a single-arm, multi-centre, Phase 2 study.

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  • There is a lack of comprehensive data on COVID-19 vaccine uptake and infection outcomes specifically in pregnant women.
  • In Scotland, 25,917 COVID-19 vaccinations were administered to 18,457 pregnant women from December 2020 to October 2021, with only 32.3% of those giving birth in October 2021 being fully vaccinated compared to 77.4% in the general female population aged 18-44.
  • Unvaccinated pregnant women showed significantly higher risks of severe outcomes: 77.4% of SARS-CoV-2 infections, 90.9% of hospital admissions, and 98% of critical care admissions occurred in this group, highlighting the urgent need to improve vaccination
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Chronic myeloid leukemia (CML) stem/progenitor cells (SPCs) express a transcriptional program characteristic of proliferation, yet can achieve and maintain quiescence. Understanding the mechanisms by which leukemic SPCs maintain quiescence will help to clarify how they persist during long-term targeted treatment. We have identified a novel BCR-ABL1 protein kinase-dependent pathway mediated by the upregulation of , the downregulation of its direct target early growth response 1 (EGR1), and, as a consequence, upregulation of E2F1.

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Background: Imatinib and second-generation tyrosine kinase inhibitors (TKIs) nilotinib and dasatinib have statistically significantly improved the life expectancy of chronic myeloid leukemia (CML) patients; however, resistance to TKIs remains a major clinical challenge. Although ponatinib, a third-generation TKI, improves outcomes for patients with BCR-ABL-dependent mechanisms of resistance, including the T315I mutation, a proportion of patients may have or develop BCR-ABL-independent resistance and fail ponatinib treatment. By modeling ponatinib resistance and testing samples from these CML patients, it is hoped that an alternative drug target can be identified and inhibited with a novel compound.

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Unlabelled: A major obstacle to curing chronic myeloid leukemia (CML) is residual disease maintained by tyrosine kinase inhibitor (TKI)-persistent leukemic stem cells (LSC). These are BCR-ABL1 kinase independent, refractory to apoptosis, and serve as a reservoir to drive relapse or TKI resistance. We demonstrate that Polycomb Repressive Complex 2 is misregulated in chronic phase CML LSCs.

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Targeting the fusion oncoprotein BCR-ABL with tyrosine kinase inhibitors has significantly affected chronic myeloid leukemia (CML) treatment, transforming the life expectancy of patients; however the risk for relapse remains, due to persistence of leukemic stem cells (LSCs). Therefore it is imperative to explore the mechanisms that result in LSC survival and develop new therapeutic approaches. We now show that major histocompatibility complex (MHC)-II and its master regulator class II transactivator (CIITA) are downregulated in CML compared with non-CML stem/progenitor cells in a BCR-ABL kinase-independent manner.

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Chronic myeloid leukaemia (CML) arises after transformation of a haemopoietic stem cell (HSC) by the protein-tyrosine kinase BCR-ABL. Direct inhibition of BCR-ABL kinase has revolutionized disease management, but fails to eradicate leukaemic stem cells (LSCs), which maintain CML. LSCs are independent of BCR-ABL for survival, providing a rationale for identifying and targeting kinase-independent pathways.

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The regulation of hematopoietic stem cell (HSC) survival and self-renewal within the bone marrow (BM) niche is not well understood. We therefore investigated global transcriptomic profiling of normal human HSC/hematopoietic progenitor cells [HPCs], revealing that several chemokine ligands (CXCL1-4, CXCL6, CXCL10, CXCL11, and CXCL13) were upregulated in human quiescent CD34(+)Hoescht(-)Pyronin Y(-) and primitive CD34(+)38(-), as compared with proliferating CD34(+)Hoechst(+)Pyronin Y(+) and CD34(+)38(+) stem/progenitor cells. This suggested that chemokines might play an important role in the homeostasis of HSCs.

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Chronic myeloid leukemia (CML) is initiated and maintained by the tyrosine kinase BCR-ABL which activates a number of signal transduction pathways, including PI3K/AKT signaling and consequently inactivates FOXO transcription factors. ABL-specific tyrosine kinase inhibitors (TKIs) induce minimal apoptosis in CML progenitor cells, yet exert potent antiproliferative effects, through as yet poorly understood mechanisms. Here, we demonstrate that in CD34+ CML cells, FOXO1 and 3a are inactivated and relocalized to the cytoplasm by BCR-ABL activity.

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