Ann O’Callaghan

ORCID: 0009-0005-7311-3764
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About
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Research Areas
  • Colorectal Cancer Treatments and Studies
  • Radiomics and Machine Learning in Medical Imaging
  • Cancer Treatment and Pharmacology
  • Medical Imaging Techniques and Applications
  • Cancer Immunotherapy and Biomarkers
  • SARS-CoV-2 and COVID-19 Research
  • Immunotherapy and Immune Responses
  • CAR-T cell therapy research
  • Lymphoma Diagnosis and Treatment
  • COVID-19 Clinical Research Studies
  • Lung Cancer Treatments and Mutations
  • Gastric Cancer Management and Outcomes
  • COVID-19 and healthcare impacts
  • Multiple and Secondary Primary Cancers
  • Radiopharmaceutical Chemistry and Applications
  • Gastrointestinal disorders and treatments
  • Myasthenia Gravis and Thymoma
  • Monoclonal and Polyclonal Antibodies Research
  • Colorectal and Anal Carcinomas
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Lymphatic Disorders and Treatments
  • Urinary and Genital Oncology Studies
  • Systemic Lupus Erythematosus Research
  • Infection Control and Ventilation
  • Chemotherapy-induced cardiotoxicity and mitigation

Portsmouth Hospitals NHS Trust
2016-2023

National Health Service
2023

Queen Alexandra Hospital
2013-2023

Wellcome Trust
2023

St James's University Hospital
2023

Sheffield Teaching Hospitals NHS Foundation Trust
2020

Birkbeck, University of London
2019

Ludwig-Maximilians-Universität München
2018

LMU Klinikum
2018

St Mary's Hospital
2003

BackgroundTherapeutic antibodies targeting EGFR have activity in advanced colorectal cancer, but results from clinical trials are inconsistent and the population which most benefit is derived uncertain. Our aim was to assess addition of panitumumab irinotecan pretreated cancer.MethodsIn this open-label, randomised trial, we enrolled patients who had cancer progressing after fluoropyrimidine treatment with or without oxaliplatin 60 centres UK. From December, 2006 until June, 2008, molecularly...

10.1016/s1470-2045(13)70163-3 article EN cc-by The Lancet Oncology 2013-05-29

BackgroundThe interim analysis of the multicentre New EPOC trial in patients with resectable colorectal liver metastasis showed a significant reduction progression-free survival allocated to cetuximab plus chemotherapy compared those given alone. The focus present was assess effect on overall survival.MethodsNew multicentre, open-label, randomised, controlled, phase 3 trial. Adult (aged ≥18 years) KRAS wild-type (codons 12, 13, and 61) or suboptimally metastases WHO performance status 0–2...

10.1016/s1470-2045(19)30798-3 article EN cc-by-nc-nd The Lancet Oncology 2020-01-31
Judith Trotman Sally F. Barrington David Belada Michel Meignan Robert MacEwan and 95 more Carolyn Owen Václav Ptáčník András Rosta Günter Fingerle‐Rowson Jiawen Zhu Tina Nielsen Deniz Şahin Wolfgang Hiddemann Robert Marcus Andrew Davies Mark Hertzberg Andrew Grigg Paul Cannell Hang Quach Stephen Opat Constantine S. Tam Paula Marlton Ann Janssens Fritz Offner Koen Van Eygen Randeep Sangha Pam McKay Jonathan Wilson Richard van der Jagt Daryl Roitman Marek Trněný Jiřı́ Mayer Katell Le Dû Philippe Solal‐Céligny Guillaume Cartron Charles Foussard Norbert Frickhofen Peter Schmidt Ullrich Graeven Tobias Gaska Rudolf Schlag Martin Sökler Gabriele Prange‐Krex Axel Florschütz Hans‐Walter Lindemann Christoph Schimmelpfennig Solveig Tonndorf Mathias Hänel Georg Heß Enrico Schalk Heiko Hütten Gottfried Doelken Michael Pfreundschuh Ulrich Keller Michael Herold Roswitha Forstpointner Ursula Vehling‐Kaiser Martin Hoffmann Zita Borbényi M. Udvardy Judit Demeter Alessandro Rambaldi Enrica Morra Federico Massimo Ignazio Majolino Monica Balzarotti Gianpietro Semenzato Miguel Canales Francisco Javier Peñalver Párraga Alfonso Soler Campos Juan‐Manuel Sancho José Antonio Márquez Navarro Carlos Grande García Herman Nilsson‐Ehle Helen O. McCarthy Chris Pocock Shalal Sadullah Ram Malladi John Radford Ed Kanfer Anton Kruger Dominic Culligan Martin J.S. Dyer Ruth Pettengell John Seymour John G. Gribben Saad Al‐Ismail F. N. Al‐Refaie Norbert Blesing Christopher Macnamara Ann O’Callaghan Andrew Haynes George Follows Roderick J. Johnson David Cunningham Kristian M. Bowles Graham P. Collins Eve Gallop‐Evans Stephen Robinson Chezhian Subash

10.1016/s1470-2045(18)30618-1 article EN The Lancet Oncology 2018-10-08

Abstract Patients with hematological malignancies are at increased risk of severe COVID-19 outcomes due to compromised immune responses, but the insights these studies have been intrinsic limitations in study design. Here we present PROSECO prospective observational ( NCT04858568 ) on 457 patients lymphoma that received two or three vaccine doses. We show undetectable humoral responses following doses 52% undergoing active anticancer treatment. Moreover, 60% anti-CD20 therapy had antibodies...

10.1038/s43018-022-00364-3 article EN cc-by Nature Cancer 2022-03-24

10.1093/oxfordjournals.annonc.a059251 article EN publisher-specific-oa Annals of Oncology 1995-07-01

3523 Background: Phase III trials show inconsistent effects when anti-EGFR drugs are added to cytotoxic therapy in aCRC. Benefits, present, confined patients (pts) determined retrospectively have KRAS wild-type (wt) tumours. PICCOLO is a multicentre randomized controlled trial, amended June 2008 include prospective testing, evaluate the addition of panitumumab (Pan) single-agent irinotecan (Ir) as second- or subsequent-line for KRAS-wt Methods: Eligible pts had: measurable aCRC progressing...

10.1200/jco.2011.29.15_suppl.3523 article EN Journal of Clinical Oncology 2011-05-20

Conference Article| June 01 1984 Possible biochemical basis for bilirubin neurotoxicity ANN O'CALLAGHAN; O'CALLAGHAN *Biochemistry Department, University College, Cork and Biochemistry Laboratory, Regional Hospital, Cork, Ireland Search other works by this author on: This Site PubMed Google Scholar P. FINBARR DUGGAN ‡ †Biochemistry ‡To whom correspondence should be addressed. Biochem Soc Trans (1984) 12 (3): 483. https://doi.org/10.1042/bst0120483 Views Icon Article contents Figures & tables...

10.1042/bst0120483 article EN Biochemical Society Transactions 1984-06-01

Advanced or metastatic disease is common in both oesophagogastric and colorectal cancers, with poor 5-year survival despite palliative chemotherapy. We have investigated the sensitivity of gastrointestinal tumours to gemcitabine combination mitomycin C (GeM), using a modified ex vivo ATP-based tumour chemosensitivity assay (ATP-TCA). Tumour material from 41 22 cancers were assessed. The GeM showed variable but definite activity most samples tested. results show that achieves >95% inhibition...

10.1038/sj.bjc.6601403 article EN cc-by-nc-sa British Journal of Cancer 2003-12-01

2579 Background: We have designed DNA fusion vaccines encoding a tumor-derived peptide, linked to tolerance-breaking domain sequence (DOM) from tetanus toxin. One peptide prostate cancer is in clinical trial with CD8+ T-cell responses detected 60% of patients. For patients CEA expressing cancers, the target an HLA-A2-binding sequence, CAP-1 (CEA605–613). Methods: undertook single dose level, two-arm phase I/II study examine safety and immunogenicity vaccine (p.DOM-CAP-1) CEA-expressing...

10.1200/jco.2010.28.15_suppl.2579 article EN Journal of Clinical Oncology 2010-05-20

Introduction: EZH2, a histone methyl transferase subunit of Polycomb repressor complex 2, is frequently mutated in DLBL. Inhibitors EZH2 have demonstrated promising responses early clinical trials. We examined the frequency mutation 2 large prospective series DLBL and correlated this to outcomes relation other biological features. Methods: Patients (pts) received standard immunochemotherapy regimens as first-line treatment for Sanger sequencing (SS) focusing on “hotspot” sites exons 16 18...

10.1002/hon.2438_13 article EN Hematological Oncology 2017-06-01

Abstract: Antisera against 2‐aminoimipramine covalently coupled to albumin have been raised in two rabbits. Both antisera bind imipramine and related tricyclic compounds as if a single class of sites with high affinity litres. Displacement/inhibition assays showed that the affinities various for good correlation these drugs antidepressant inhibitory on plasma‐membrane 5‐hydroxytryptamine carriers human platelets rat brain cortex. 5‐Hydroxytryptamine 5‐hy‐droxytryptamine‐uptake‐selective did...

10.1111/j.1471-4159.1987.tb09998.x article EN Journal of Neurochemistry 1987-10-01

Abstract Individuals with lymphoid malignancies have an increased mortality risk from COVID-19. Paradoxically, this population is least likely to be protected by SARS-CoV-2 vaccination as a result of disease- or treatment-related immunosuppression. Current data on vaccine responses in persons limited. PROSECO UK multi-centre prospective observational study evaluating COVID-19 immune individuals lymphoma. This early interim analysis details the antibody first- and second-SARS-CoV-2 either...

10.1101/2021.06.05.21258311 preprint EN medRxiv (Cold Spring Harbor Laboratory) 2021-06-12
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