2023
Dretzke, Janine; Lorenc, Ava; Adriano, Ada; Herd, Clare; Mehanna, Hisham; Nankivell, Paul; Moore, David J.; Karwath, Andreas; Main, Barry; Firth, Charlotte; Gaunt, Claire; Greaves, Colin; Watson, Eila; Gkoutos, Georgios; Ozakinci, Gozde; Wolstenholme, Jane; Brett, Jo; Duda, Joan; Matheson, Lauren; Cherrill, Louise‐Rae; Calvert, Melanie; Kiely, Philip; Gaunt, Piers; Chernbumroong, Saisakul; Mittal, Saloni; Thomas, Steve; Winter, Stuart; Wong, Wai Lup; Team, PETNECK2 Research
Systematic review of patients’ and healthcare professionals’ views on patient‐initiated follow‐up in treated cancer patients Journal Article
In: Cancer Medicine, 2023, ISSN: 2045-7634.
Abstract | Links | BibTeX | Tags: cancer, health data science, medicine, systematic review
@article{9b13f3c6d25842a9bd3efe7343c24a41,
title = {Systematic review of patients’ and healthcare professionals’ views on patient‐initiated follow‐up in treated cancer patients},
author = {Janine Dretzke and Ava Lorenc and Ada Adriano and Clare Herd and Hisham Mehanna and Paul Nankivell and David J. Moore and Andreas Karwath and Barry Main and Charlotte Firth and Claire Gaunt and Colin Greaves and Eila Watson and Georgios Gkoutos and Gozde Ozakinci and Jane Wolstenholme and Jo Brett and Joan Duda and Lauren Matheson and Louise‐Rae Cherrill and Melanie Calvert and Philip Kiely and Piers Gaunt and Saisakul Chernbumroong and Saloni Mittal and Steve Thomas and Stuart Winter and Wai Lup Wong and PETNECK2 Research Team },
doi = {10.1002/cam4.6243},
issn = {2045-7634},
year = {2023},
date = {2023-06-16},
urldate = {2023-06-16},
journal = {Cancer Medicine},
publisher = {John Wiley & Sons},
abstract = {Background: Current follow‐up models in cancer are seen to be unsustainable and inflexible, and there is growing interest in alternative models, such as patient‐initiated follow‐up (PIFU). It is therefore important to understand whether PIFU is acceptable to patients and healthcare professionals (HCPs). Methods: Standard systematic review methodology aimed at limiting bias was used for study identification (to January 2022), selection and data extraction. Thematic synthesis was undertaken for qualitative data, and survey findings were tabulated and described. Results: Nine qualitative studies and 22 surveys were included, mainly in breast and endometrial cancer. Women treated for breast or endometrial cancer and HCPs were mostly supportive of PIFU. Facilitators for PIFU included convenience, control over own health and avoidance of anxiety‐inducing clinic appointments. Barriers included loss of reassurance from scheduled visits and lack of confidence in self‐management. HCPs were supportive of PIFU but concerned about resistance to change, unsuitability of PIFU for some patients and costs. Conclusion: PIFU is viewed mostly positively by women treated for breast or endometrial cancer, and by HCPs, but further evidence is needed from a wider range of cancers, men, and more representative samples. A protocol was registered with PROSPERO (CRD42020181412).},
keywords = {cancer, health data science, medicine, systematic review},
pubstate = {published},
tppubtype = {article}
}
Taib, Bilal Gani; Karwath, Andreas; Wensley, K.; Minku, L.; Gkoutos, G. V.; Moiemen, N.
Artificial intelligence in the management and treatment of burns: A systematic review and meta-analyses Journal Article
In: Journal of Plastic, Reconstructive & Aesthetic Surgery, vol. 77, pp. 133–161, 2023.
Links | BibTeX | Tags: burns, health data science, medicine, systematic review
@article{Taib_2023,
title = {Artificial intelligence in the management and treatment of burns: A systematic review and meta-analyses},
author = {Bilal Gani Taib and Andreas Karwath and K. Wensley and L. Minku and G. V. Gkoutos and N. Moiemen},
url = {https://doi.org/10.1016%2Fj.bjps.2022.11.049},
doi = {10.1016/j.bjps.2022.11.049},
year = {2023},
date = {2023-02-01},
urldate = {2023-02-01},
journal = {Journal of Plastic, Reconstructive & Aesthetic Surgery},
volume = {77},
pages = {133--161},
publisher = {Elsevier BV},
keywords = {burns, health data science, medicine, systematic review},
pubstate = {published},
tppubtype = {article}
}
Slater, Luke T.; Williams, John A.; Schofield, Paul N.; Russell, Sophie; Pendleton, Samantha C.; Karwath, Andreas; Fanning, Hilary; Ball, Simon; Hoehndorf, Robert; Gkoutos, Georgios V.
Klarigi: Characteristic explanations for semantic biomedical data Journal Article
In: Computers in Biology and Medicine, vol. 153, pp. 106425, 2023.
Links | BibTeX | Tags: artificial intelligence, health data science, NLP
@article{Slater_2023,
title = {Klarigi: Characteristic explanations for semantic biomedical data},
author = {Luke T. Slater and John A. Williams and Paul N. Schofield and Sophie Russell and Samantha C. Pendleton and Andreas Karwath and Hilary Fanning and Simon Ball and Robert Hoehndorf and Georgios V. Gkoutos},
url = {https://doi.org/10.1016%2Fj.compbiomed.2022.106425},
doi = {10.1016/j.compbiomed.2022.106425},
year = {2023},
date = {2023-02-01},
urldate = {2023-02-01},
journal = {Computers in Biology and Medicine},
volume = {153},
pages = {106425},
publisher = {Elsevier BV},
keywords = {artificial intelligence, health data science, NLP},
pubstate = {published},
tppubtype = {article}
}
Gill, Simrat; Karwath, Andreas; Uh, Hae-Won; Cardoso, Victor Roth; Gu, Zhujie; Barsky, Andrey; Slater, Luke; Acharjee, Animesh; Duan, Jinming; DallÓlio, Lorenzo; el Bouhaddani, Said; Chernbumroong, Saisakul; Stanbury, Mary; Haynes, Sandra; Asselbergs, Folkert W; Grobbee, Diederick; Eijkemans, Marinus; Gkoutos, Georgios; Kotecha, Dipak; group BigData@Heart Consortium,
Artificial intelligence to enhance clinical value across the spectrum of cardiovascular healthcare: artificial intelligence framework Journal Article
In: European Heart Journal, 2023, ISSN: 0195-668X, (textcopyright The Author(s) 2023. Published by Oxford University Press on behalf of the European Society of Cardiology.).
Abstract | Links | BibTeX | Tags: artificial intelligence, cardiology, EHR, health data science
@article{9b9767f517a040f4822591145f8c61a8,
title = {Artificial intelligence to enhance clinical value across the spectrum of cardiovascular healthcare: artificial intelligence framework},
author = {Simrat Gill and Andreas Karwath and Hae-Won Uh and Victor Roth Cardoso and Zhujie Gu and Andrey Barsky and Luke Slater and Animesh Acharjee and Jinming Duan and Lorenzo DallÓlio and Said el Bouhaddani and Saisakul Chernbumroong and Mary Stanbury and Sandra Haynes and Folkert W Asselbergs and Diederick Grobbee and Marinus Eijkemans and Georgios Gkoutos and Dipak Kotecha and group BigData@Heart Consortium },
doi = {10.1093/eurheartj/ehac758},
issn = {0195-668X},
year = {2023},
date = {2023-01-11},
urldate = {2023-01-11},
journal = {European Heart Journal},
publisher = {Öxford University Press},
abstract = {Artificial intelligence (AI) is increasingly being utilized in healthcare. This article provides clinicians and researchers with a step-wise foundation for high-value AI that can be applied to a variety of different data modalities. The aim is to improve the transparency and application of AI methods, with the potential to benefit patients in routine cardiovascular care. Following a clear research hypothesis, an AI-based workflow begins with data selection and pre-processing prior to analysis, with the type of data (structured, semi-structured, or unstructured) determining what type of pre-processing steps and machine-learning algorithms are required. Algorithmic and data validation should be performed to ensure the robustness of the chosen methodology, followed by an objective evaluation of performance. Seven case studies are provided to highlight the wide variety of data modalities and clinical questions that can benefit from modern AI techniques, with a focus on applying them to cardiovascular disease management.Despite the growing use of AI, further education for healthcare workers, researchers, and the public are needed to aid understanding of how AI works and to close the existing gap in knowledge. In addition, issues regarding data access, sharing, and security must be addressed to ensure full engagement by patients and the public. The application of AI within healthcare provides an opportunity for clinicians to deliver a more personalized approach to medical care by accounting for confounders, interactions, and the rising prevalence of multi-morbidity."},
note = {textcopyright The Author(s) 2023. Published by Oxford University Press on behalf of the European Society of Cardiology.},
keywords = {artificial intelligence, cardiology, EHR, health data science},
pubstate = {published},
tppubtype = {article}
}
2022
Wu, Honghan; Wang, Minhong; Wu, Jinge; Francis, Farah; Chang, Yun-Hsuan; Shavick, Alex; Dong, Hang; Poon, Michael T. C.; Fitzpatrick, Natalie; Levine, Adam P.; Slater, Luke T.; Handy, Alex; Karwath, Andreas; Gkoutos, Georgios V.; Chelala, Claude; Shah, Anoop Dinesh; Stewart, Robert; Collier, Nigel; Alex, Beatrice; Whiteley, William; Sudlow, Cathie; Roberts, Angus; Dobson, Richard J. B.
A survey on clinical natural language processing in the United Kingdom from 2007 to 2022 Journal Article
In: npj Digital Medicine, vol. 5, no. 1, 2022.
Links | BibTeX | Tags: artificial intelligence, health data science, NLP
@article{Wu_2022,
title = {A survey on clinical natural language processing in the United Kingdom from 2007 to 2022},
author = {Honghan Wu and Minhong Wang and Jinge Wu and Farah Francis and Yun-Hsuan Chang and Alex Shavick and Hang Dong and Michael T. C. Poon and Natalie Fitzpatrick and Adam P. Levine and Luke T. Slater and Alex Handy and Andreas Karwath and Georgios V. Gkoutos and Claude Chelala and Anoop Dinesh Shah and Robert Stewart and Nigel Collier and Beatrice Alex and William Whiteley and Cathie Sudlow and Angus Roberts and Richard J. B. Dobson},
url = {https://doi.org/10.1038%2Fs41746-022-00730-6},
doi = {10.1038/s41746-022-00730-6},
year = {2022},
date = {2022-12-01},
urldate = {2022-12-01},
journal = {npj Digital Medicine},
volume = {5},
number = {1},
publisher = {Springer Science and Business Media LLC},
keywords = {artificial intelligence, health data science, NLP},
pubstate = {published},
tppubtype = {article}
}
Manley, Susan Elisabeth; Karwath, Andreas; Williams, John; Nightingale, Peter; Webber, Jonathan; Raghavan, Rajeev; Barratt, Alison; Webster, Craig; Round, Rachel; Stratton, Irene; Gkoutos, Georgios; Roberts, Graham; Mostafa, Samiul; Ghosh, Sandip
Use of HbA1c for new diagnosis of diabetes in those with hyperglycaemia on admission to or attendance at hospital urgently requires research Journal Article
In: British Journal of Diabetes, vol. 22, no. 2, pp. 95–104, 2022.
Links | BibTeX | Tags: diabetes, EHR, health data science, medicine
@article{Manley_2022,
title = {Use of HbA1c for new diagnosis of diabetes in those with hyperglycaemia on admission to or attendance at hospital urgently requires research},
author = {Susan Elisabeth Manley and Andreas Karwath and John Williams and Peter Nightingale and Jonathan Webber and Rajeev Raghavan and Alison Barratt and Craig Webster and Rachel Round and Irene Stratton and Georgios Gkoutos and Graham Roberts and Samiul Mostafa and Sandip Ghosh},
url = {https://doi.org/10.15277%2Fbjd.2022.386},
doi = {10.15277/bjd.2022.386},
year = {2022},
date = {2022-12-01},
urldate = {2022-12-01},
journal = {British Journal of Diabetes},
volume = {22},
number = {2},
pages = {95--104},
publisher = {ABCD Diabetes Care, Ltd.},
keywords = {diabetes, EHR, health data science, medicine},
pubstate = {published},
tppubtype = {article}
}
Williams, John A.; Karwath, Andreas; Round, Rachel A.; Stratton, Irene M.; Ghosh, Sandip; Mostafa, Samiul; Roberts, Graham; Webber, Jonathan; Gkoutos, Georgios; Manley, Susan E.
133-LB: Relationship of HbA1c and Glucose by Ethnicity in UK Biobank Journal Article
In: Diabetes, vol. 71, no. Supplement_1, 2022.
Links | BibTeX | Tags: diabetes, EHR, health data science, medicine, UKBiobank
@article{WILLIAMS_2022,
title = {133-LB: Relationship of HbA1c and Glucose by Ethnicity in UK Biobank},
author = {John A. Williams and Andreas Karwath and Rachel A. Round and Irene M. Stratton and Sandip Ghosh and Samiul Mostafa and Graham Roberts and Jonathan Webber and Georgios Gkoutos and Susan E. Manley},
url = {https://doi.org/10.2337%2Fdb22-133-lb},
doi = {10.2337/db22-133-lb},
year = {2022},
date = {2022-06-01},
urldate = {2022-06-01},
journal = {Diabetes},
volume = {71},
number = {Supplement_1},
publisher = {American Diabetes Association},
keywords = {diabetes, EHR, health data science, medicine, UKBiobank},
pubstate = {published},
tppubtype = {article}
}
Karwath, Andreas; Williams, John A.; Round, Rachel A.; Stratton, Irene M.; Gkoutos, Georgios; Mostafa, Samiul; Roberts, Graham; Webber, Jonathan; Manley, Susan E.
973-P: By How Much Does Red Blood Cell Status Affect the Accuracy of HbA1c? Journal Article
In: Diabetes, vol. 71, no. Supplement_1, 2022.
Links | BibTeX | Tags: diabetes, EHR, health data science, medicine
@article{KARWATH_2022,
title = {973-P: By How Much Does Red Blood Cell Status Affect the Accuracy of HbA1c?},
author = {Andreas Karwath and John A. Williams and Rachel A. Round and Irene M. Stratton and Georgios Gkoutos and Samiul Mostafa and Graham Roberts and Jonathan Webber and Susan E. Manley},
url = {https://doi.org/10.2337%2Fdb22-973-p},
doi = {10.2337/db22-973-p},
year = {2022},
date = {2022-06-01},
urldate = {2022-06-01},
journal = {Diabetes},
volume = {71},
number = {Supplement_1},
publisher = {American Diabetes Association},
keywords = {diabetes, EHR, health data science, medicine},
pubstate = {published},
tppubtype = {article}
}
Williams, John; Burgess, Stephen; Suckling, John; Lalousis, Paris Alexandros; Batool, Fatima; Griffiths, Lowri; Palmer, Edward; Karwath, Andreas; Barsky, Andrey; Gkoutos, Georgios; Wood, Stephen; Barnes, Nicholas; David, Anthony S; Donohoe, Gary; Neill, Joanna; Deakin, Bill; Khandaker, Golam; Upthegrove, Rachel; collaboration, PIMS
Inflammation and brain structure in schizophrenia and other neuropsychiatric disorders: A Mendelian randomization study Journal Article
In: JAMA psychiatry, vol. 2022, pp. 1–11, 2022, ISSN: 2168-622X.
Abstract | Links | BibTeX | Tags: artificial intelligence, health data science, medicine
@article{44ac2137c0fa4666839a213d0fc6175c,
title = {Inflammation and brain structure in schizophrenia and other neuropsychiatric disorders: A Mendelian randomization study},
author = {John Williams and Stephen Burgess and John Suckling and Paris Alexandros Lalousis and Fatima Batool and Lowri Griffiths and Edward Palmer and Andreas Karwath and Andrey Barsky and Georgios Gkoutos and Stephen Wood and Nicholas Barnes and Anthony S David and Gary Donohoe and Joanna Neill and Bill Deakin and Golam Khandaker and Rachel Upthegrove and PIMS collaboration},
doi = {10.1001/jamapsychiatry.2022.0407},
issn = {2168-622X},
year = {2022},
date = {2022-03-30},
urldate = {2022-03-30},
journal = {JAMA psychiatry},
volume = {2022},
pages = {1--11},
publisher = {Ämerican Medical Association},
abstract = {Importance: Previous in vitro and postmortem research suggests that inflammation may lead to structural brain changes via activation of microglia and/or astrocytic dysfunction in a range of neuropsychiatric disorders. Objective: To investigate the relationship between inflammation and changes in brain structures in vivo and to explore a transcriptome-driven functional basis with relevance to mental illness. Design, Setting, and Participants: This study used multistage linked analyses, including mendelian randomization (MR), gene expression correlation, and connectivity analyses. A total of 20688 participants in the UK Biobank, which includes clinical, genomic, and neuroimaging data, and 6 postmortem brains from neurotypical individuals in the Allen Human Brain Atlas (AHBA), including RNA microarray data. Data were extracted in February 2021 and analyzed between March and October 2021. Exposures: Genetic variants regulating levels and activity of circulating interleukin 1 (IL-1), IL-2, IL-6, C-reactive protein (CRP), and brain-derived neurotrophic factor (BDNF) were used as exposures in MR analyses. Main Outcomes and Measures: Brain imaging measures, including gray matter volume (GMV) and cortical thickness (CT), were used as outcomes. Associations were considered significant at a multiple testing-corrected threshold of P < 1.1 × 10-4. Differential gene expression in AHBA data was modeled in brain regions mapped to areas significant in MR analyses; genes were tested for biological and disease overrepresentation in annotation databases and for connectivity in protein-protein interaction networks. Results: Of 20688 participants in the UK Biobank sample, 10828 (52.3%) were female, and the mean (SD) age was 55.5 (7.5) years. In the UK Biobank sample, genetically predicted levels of IL-6 were associated with GMV in the middle temporal cortex (z score, 5.76; P = 8.39 × 10-9), inferior temporal (z score, 3.38; P = 7.20 × 10-5), fusiform (z score, 4.70; P = 2.60 × 10-7), and frontal (z score, -3.59; P = 3.30 × 10-5) cortex together with CT in the superior frontal region (z score, -5.11; P = 3.22 × 10-7). No significant associations were found for IL-1, IL-2, CRP, or BDNF after correction for multiple comparison. In the AHBA sample, 5 of 6 participants (83%) were male, and the mean (SD) age was 42.5 (13.4) years. Brain-wide coexpression analysis showed a highly interconnected network of genes preferentially expressed in the middle temporal gyrus (MTG), which further formed a highly connected protein-protein interaction network with IL-6 (enrichment test of expected vs observed network given the prevalence and degree of interactions in the STRING database: 43 nodes/30 edges observed vs 8 edges expected; mean node degree, 1.4; genome-wide significanc},
keywords = {artificial intelligence, health data science, medicine},
pubstate = {published},
tppubtype = {article}
}
Slater, Luke T; Russell, Sophie; Makepeace, Silver; Carberry, Alexander; Karwath, Andreas; Williams, John A; Fanning, Hilary; Ball, Simon; Hoehndorf, Robert; Gkoutos, Georgios V
Evaluating semantic similarity methods for comparison of text-derived phenotype profiles Journal Article
In: BMC Medical Informatics and Decision Making, vol. 22, no. 1, 2022, ISSN: 1472-6947.
Abstract | Links | BibTeX | Tags: differential diagnosis, health data science, MIMIC-III, ontology, semantic similarity, semantic web
@article{6b64a2f714094b7abb9373ccb6d527e0,
title = {Evaluating semantic similarity methods for comparison of text-derived phenotype profiles},
author = {Luke T Slater and Sophie Russell and Silver Makepeace and Alexander Carberry and Andreas Karwath and John A Williams and Hilary Fanning and Simon Ball and Robert Hoehndorf and Georgios V Gkoutos},
doi = {10.1186/s12911-022-01770-4},
issn = {1472-6947},
year = {2022},
date = {2022-02-05},
urldate = {2022-02-05},
journal = {BMC Medical Informatics and Decision Making},
volume = {22},
number = {1},
publisher = {Springer},
abstract = {BACKGROUND: Semantic similarity is a valuable tool for analysis in biomedicine. When applied to phenotype profiles derived from clinical text, they have the capacity to enable and enhance 'patient-like me' analyses, automated coding, differential diagnosis, and outcome prediction. While a large body of work exists exploring the use of semantic similarity for multiple tasks, including protein interaction prediction, and rare disease differential diagnosis, there is less work exploring comparison of patient phenotype profiles for clinical tasks. Moreover, there are no experimental explorations of optimal parameters or better methods in the area.METHODS: We develop a platform for reproducible benchmarking and comparison of experimental conditions for patient phentoype similarity. Using the platform, we evaluate the task of ranking shared primary diagnosis from uncurated phenotype profiles derived from all text narrative associated with admissions in the medical information mart for intensive care (MIMIC-III).RESULTS: 300 semantic similarity configurations were evaluated, as well as one embedding-based approach. On average, measures that did not make use of an external information content measure performed slightly better, however the best-performing configurations when measured by area under receiver operating characteristic curve and Top Ten Accuracy used term-specificity and annotation-frequency measures.CONCLUSION: We identified and interpreted the performance of a large number of semantic similarity configurations for the task of classifying diagnosis from text-derived phenotype profiles in one setting. We also provided a basis for further research on other settings and related tasks in the area.},
keywords = {differential diagnosis, health data science, MIMIC-III, ontology, semantic similarity, semantic web},
pubstate = {published},
tppubtype = {article}
}
2021
Slater, Luke T.; Williams, John A.; Karwath, Andreas; Fanning, Hilary; Ball, Simon; Schofield, Paul N.; Hoehndorf, Robert; Gkoutos, Georgios V.
Multi-faceted semantic clustering with text-derived phenotypes Journal Article
In: Computers in biology and medicine, 2021, ISSN: 0010-4825.
Abstract | Links | BibTeX | Tags: cluster explanation, clustering, health data science, MIMIC-III, ontology, semantic similarity
@article{14598610a01b4af99802a4b22e67a119,
title = {Multi-faceted semantic clustering with text-derived phenotypes},
author = {Luke T. Slater and John A. Williams and Andreas Karwath and Hilary Fanning and Simon Ball and Paul N. Schofield and Robert Hoehndorf and Georgios V. Gkoutos},
doi = {10.1016/j.compbiomed.2021.104904},
issn = {0010-4825},
year = {2021},
date = {2021-11-01},
urldate = {2021-11-01},
journal = {Computers in biology and medicine},
publisher = {Elsevier},
abstract = {Identification of ontology concepts in clinical narrative text enables the creation of phenotype profiles that can be associated with clinical entities, such as patients or drugs. Constructing patient phenotype profiles using formal ontologies enables their analysis via semantic similarity, in turn enabling the use of background knowledge in clustering or classification analyses. However, traditional semantic similarity approaches collapse complex relationships between patient phenotypes into a unitary similarity scores for each pair of patients. Moreover, single scores may be based only on matching terms with the greatest information content (IC), ignoring other dimensions of patient similarity. This process necessarily leads to a loss of information in the resulting representation of patient similarity, and is especially apparent when using very large text-derived and highly multi-morbid phenotype profiles. Moreover, it renders finding a biological explanation for similarity very difficult; the black box problem. In this article, we explore the generation of multiple semantic similarity scores for patients based on different facets of their phenotypic manifestation, which we define through different sub-graphs in the Human Phenotype Ontology. We further present a new methodology for deriving sets of qualitative class descriptions for groups of entities described by ontology terms. Leveraging this strategy to obtain meaningful explanations for our semantic clusters alongside other evaluation techniques, we show that semantic clustering with ontology-derived facets enables the representation, and thus identification of, clinically relevant phenotype relationships not easily recoverable using overall clustering alone. In this way, we demonstrate the potential of faceted semantic clustering for gaining a deeper and more nuanced understanding of text-derived patient phenotypes.},
keywords = {cluster explanation, clustering, health data science, MIMIC-III, ontology, semantic similarity},
pubstate = {published},
tppubtype = {article}
}
Chapman, Martin; Mumtaz, Shahzad; Rasmussen, Luke V; Karwath, Andreas; Gkoutos, Georgios V; Gao, Chuang; Thayer, Dan; Pacheco, Jennifer A; Parkinson, Helen; Richesson, Rachel L; Jefferson, Emily; Denaxas, Spiros; Curcin, Vasa
Desiderata for the development of next-generation electronic health record phenotype libraries Journal Article
In: GigaScience, vol. 10, no. 9, 2021.
Links | BibTeX | Tags: EHR, health data science, phenotypes, validation
@article{Chapman_2021,
title = {Desiderata for the development of next-generation electronic health record phenotype libraries},
author = {Martin Chapman and Shahzad Mumtaz and Luke V Rasmussen and Andreas Karwath and Georgios V Gkoutos and Chuang Gao and Dan Thayer and Jennifer A Pacheco and Helen Parkinson and Rachel L Richesson and Emily Jefferson and Spiros Denaxas and Vasa Curcin},
url = {https://doi.org/10.1093%2Fgigascience%2Fgiab059},
doi = {10.1093/gigascience/giab059},
year = {2021},
date = {2021-09-01},
urldate = {2021-09-01},
journal = {GigaScience},
volume = {10},
number = {9},
publisher = {Oxford University Press (OUP)},
keywords = {EHR, health data science, phenotypes, validation},
pubstate = {published},
tppubtype = {article}
}
Pendleton, Samantha C.; Slater, Luke T.; Karwath, Andreas; Gilbert, Rose M.; Davis, Nicola; Pesudovs, Konrad; Liu, Xiaoxuan; Denniston, Alastair K.; Gkoutos, Georgios V.; Braithwaite, Tasanee
In: Computers in Biology and Medicine, vol. 135, pp. 104542, 2021.
Links | BibTeX | Tags: health data science, NLP, semantic similarity
@article{Pendleton_2021,
title = {Development and application of the ocular immune-mediated inflammatory diseases ontology enhanced with synonyms from online patient support forum conversation},
author = {Samantha C. Pendleton and Luke T. Slater and Andreas Karwath and Rose M. Gilbert and Nicola Davis and Konrad Pesudovs and Xiaoxuan Liu and Alastair K. Denniston and Georgios V. Gkoutos and Tasanee Braithwaite},
url = {https://doi.org/10.1016%2Fj.compbiomed.2021.104542},
doi = {10.1016/j.compbiomed.2021.104542},
year = {2021},
date = {2021-08-01},
urldate = {2021-08-01},
journal = {Computers in Biology and Medicine},
volume = {135},
pages = {104542},
publisher = {Elsevier BV},
keywords = {health data science, NLP, semantic similarity},
pubstate = {published},
tppubtype = {article}
}
Karwath, Andreas; Bunting, Karina V; Gill, Simrat K; Tica, Otilia; Pendleton, Samantha; Aziz, Furqan; Barsky, Andrey D; Chernbumroong, Saisakul; Duan, Jinming; Mobley, Alastair R; Cardoso, Victor Roth; Slater, Luke; Williams, John A; Bruce, Emma-Jane; Wang, Xiaoxia; Flather, Marcus D; Coats, Andrew J S; Gkoutos, Georgios V; Kotecha, Dipak
Redefining beta-blocker response in heart failure patients with sinus rhythm and atrial fibrillation: a machine learning cluster analysis Journal Article
In: The Lancet, 2021.
Abstract | Links | BibTeX | Tags: artificial intelligence, clustering, crossvalidation, deep learning, EHR, health data science, phenotypes, validation
@article{Karwath_2021,
title = {Redefining beta-blocker response in heart failure patients with sinus rhythm and atrial fibrillation: a machine learning cluster analysis},
author = {Andreas Karwath and Karina V Bunting and Simrat K Gill and Otilia Tica and Samantha Pendleton and Furqan Aziz and Andrey D Barsky and Saisakul Chernbumroong and Jinming Duan and Alastair R Mobley and Victor Roth Cardoso and Luke Slater and John A Williams and Emma-Jane Bruce and Xiaoxia Wang and Marcus D Flather and Andrew J S Coats and Georgios V Gkoutos and Dipak Kotecha},
url = {https://doi.org/10.1016%2Fs0140-6736%2821%2901638-x},
doi = {10.1016/s0140-6736(21)01638-x},
year = {2021},
date = {2021-08-01},
urldate = {2021-08-01},
journal = {The Lancet},
publisher = {Elsevier BV},
abstract = {Background
Mortality remains unacceptably high in patients with heart failure and reduced left ventricular ejection fraction (LVEF) despite advances in therapeutics. We hypothesised that a novel artificial intelligence approach could better assess multiple and higher-dimension interactions of comorbidities, and define clusters of β-blocker efficacy in patients with sinus rhythm and atrial fibrillation.
Methods
Neural network-based variational autoencoders and hierarchical clustering were applied to pooled individual patient data from nine double-blind, randomised, placebo-controlled trials of β blockers. All-cause mortality during median 1·3 years of follow-up was assessed by intention to treat, stratified by electrocardiographic heart rhythm. The number of clusters and dimensions was determined objectively, with results validated using a leave-one-trial-out approach. This study was prospectively registered with ClinicalTrials.gov (NCT00832442) and the PROSPERO database of systematic reviews (CRD42014010012).
Findings
15 659 patients with heart failure and LVEF of less than 50% were included, with median age 65 years (IQR 56–72) and LVEF 27% (IQR 21–33). 3708 (24%) patients were women. In sinus rhythm (n=12 822), most clusters demonstrated a consistent overall mortality benefit from β blockers, with odds ratios (ORs) ranging from 0·54 to 0·74. One cluster in sinus rhythm of older patients with less severe symptoms showed no significant efficacy (OR 0·86, 95% CI 0·67–1·10; p=0·22). In atrial fibrillation (n=2837), four of five clusters were consistent with the overall neutral effect of β blockers versus placebo (OR 0·92, 0·77–1·10; p=0·37). One cluster of younger atrial fibrillation patients at lower mortality risk but similar LVEF to average had a statistically significant reduction in mortality with β blockers (OR 0·57, 0·35–0·93; p=0·023). The robustness and consistency of clustering was confirmed for all models (p<0·0001 vs random), and cluster membership was externally validated across the nine independent trials.
Interpretation
An artificial intelligence-based clustering approach was able to distinguish prognostic response from β blockers in patients with heart failure and reduced LVEF. This included patients in sinus rhythm with suboptimal efficacy, as well as a cluster of patients with atrial fibrillation where β blockers did reduce mortality.
Funding
Medical Research Council, UK, and EU/EFPIA Innovative Medicines Initiative BigData@Heart.},
keywords = {artificial intelligence, clustering, crossvalidation, deep learning, EHR, health data science, phenotypes, validation},
pubstate = {published},
tppubtype = {article}
}
Mortality remains unacceptably high in patients with heart failure and reduced left ventricular ejection fraction (LVEF) despite advances in therapeutics. We hypothesised that a novel artificial intelligence approach could better assess multiple and higher-dimension interactions of comorbidities, and define clusters of β-blocker efficacy in patients with sinus rhythm and atrial fibrillation.
Methods
Neural network-based variational autoencoders and hierarchical clustering were applied to pooled individual patient data from nine double-blind, randomised, placebo-controlled trials of β blockers. All-cause mortality during median 1·3 years of follow-up was assessed by intention to treat, stratified by electrocardiographic heart rhythm. The number of clusters and dimensions was determined objectively, with results validated using a leave-one-trial-out approach. This study was prospectively registered with ClinicalTrials.gov (NCT00832442) and the PROSPERO database of systematic reviews (CRD42014010012).
Findings
15 659 patients with heart failure and LVEF of less than 50% were included, with median age 65 years (IQR 56–72) and LVEF 27% (IQR 21–33). 3708 (24%) patients were women. In sinus rhythm (n=12 822), most clusters demonstrated a consistent overall mortality benefit from β blockers, with odds ratios (ORs) ranging from 0·54 to 0·74. One cluster in sinus rhythm of older patients with less severe symptoms showed no significant efficacy (OR 0·86, 95% CI 0·67–1·10; p=0·22). In atrial fibrillation (n=2837), four of five clusters were consistent with the overall neutral effect of β blockers versus placebo (OR 0·92, 0·77–1·10; p=0·37). One cluster of younger atrial fibrillation patients at lower mortality risk but similar LVEF to average had a statistically significant reduction in mortality with β blockers (OR 0·57, 0·35–0·93; p=0·023). The robustness and consistency of clustering was confirmed for all models (p<0·0001 vs random), and cluster membership was externally validated across the nine independent trials.
Interpretation
An artificial intelligence-based clustering approach was able to distinguish prognostic response from β blockers in patients with heart failure and reduced LVEF. This included patients in sinus rhythm with suboptimal efficacy, as well as a cluster of patients with atrial fibrillation where β blockers did reduce mortality.
Funding
Medical Research Council, UK, and EU/EFPIA Innovative Medicines Initiative BigData@Heart.
Slater, Luke T; Karwath, Andreas; Williams, John A; Russell, Sophie; Makepeace, Silver; Carberry, Alexander; Hoehndorf, Robert; Gkoutos, Georgios V
Towards similarity-based differential diagnostics for common diseases Journal Article
In: Computers in Biology and Medicine, vol. 133, pp. 104360, 2021.
Links | BibTeX | Tags: artificial intelligence, health data science, NLP, semantic similarity
@article{Slater_2021,
title = {Towards similarity-based differential diagnostics for common diseases},
author = {Luke T Slater and Andreas Karwath and John A Williams and Sophie Russell and Silver Makepeace and Alexander Carberry and Robert Hoehndorf and Georgios V Gkoutos},
url = {https://doi.org/10.1016%2Fj.compbiomed.2021.104360},
doi = {10.1016/j.compbiomed.2021.104360},
year = {2021},
date = {2021-06-01},
urldate = {2021-06-01},
journal = {Computers in Biology and Medicine},
volume = {133},
pages = {104360},
publisher = {Elsevier BV},
keywords = {artificial intelligence, health data science, NLP, semantic similarity},
pubstate = {published},
tppubtype = {article}
}
Carr, E; Bendayan, R; Bean, D; Stammers, M; Wang, W; Zhang, H; Searle, T; Kraljevic, Z; Shek, A; Phan, H T T; Muruet, W; Gupta, R K; Shinton, A J; Wyatt, M; Shi, T; Zhang, X; Pickles, A; Stahl, D; Zakeri, R; Noursadeghi, M; O'Gallagher, K; Rogers, M; Folarin, A; Karwath, Andreas; Wickstrøm, K E; Köhn-Luque, A; Slater, L; Cardoso, V R; Bourdeaux, C; Holten, A R; Ball, S; McWilliams, C; Roguski, L; Borca, F; Batchelor, J; Amundsen, E K; Wu, X; Gkoutos, G V; Sun, J; Pinto, A; Guthrie, B; Breen, C; Douiri, A; Wu, H; Curcin, V; Teo, J T; Shah, A M; Dobson, R J B
Evaluation and improvement of the National Early Warning Score (NEWS2) for COVID-19: a multi-hospital study Journal Article
In: BMC Med, vol. 19, no. 1, pp. 23, 2021, ISSN: 1741-7015.
Links | BibTeX | Tags: artificial intelligence, COVID-19, early warning score, health data science, machine learning
@article{RN19,
title = {Evaluation and improvement of the National Early Warning Score (NEWS2) for COVID-19: a multi-hospital study},
author = {E Carr and R Bendayan and D Bean and M Stammers and W Wang and H Zhang and T Searle and Z Kraljevic and A Shek and H T T Phan and W Muruet and R K Gupta and A J Shinton and M Wyatt and T Shi and X Zhang and A Pickles and D Stahl and R Zakeri and M Noursadeghi and K O'Gallagher and M Rogers and A Folarin and Andreas Karwath and K E Wickstrøm and A Köhn-Luque and L Slater and V R Cardoso and C Bourdeaux and A R Holten and S Ball and C McWilliams and L Roguski and F Borca and J Batchelor and E K Amundsen and X Wu and G V Gkoutos and J Sun and A Pinto and B Guthrie and C Breen and A Douiri and H Wu and V Curcin and J T Teo and A M Shah and R J B Dobson},
doi = {10.1186/s12916-020-01893-3},
issn = {1741-7015},
year = {2021},
date = {2021-01-01},
urldate = {2021-01-01},
journal = {BMC Med},
volume = {19},
number = {1},
pages = {23},
keywords = {artificial intelligence, COVID-19, early warning score, health data science, machine learning},
pubstate = {published},
tppubtype = {article}
}
KV, Bunting; SK, Gill; A, Sitch; S, Mehta; K, O'Connor; GY, Lip; P, Kirchhof; VY, Strauss; K, Rahimi; AJ, Camm; M, Stanbury; M, Griffith; JN, Townend; GV, Gkoutos; control in permanent trial group, RAte Therapy Evaluation Atrial Fibrillation (RATE-AF)
Improving the diagnosis of heart failure in patients with atrial fibrillation. Journal Article
In: Heart (British Cardiac Society), 2021.
Links | BibTeX | Tags: artificial intelligence, cardiology, health data science
@article{PMID:33692093,
title = {Improving the diagnosis of heart failure in patients with atrial fibrillation.},
author = {Bunting KV and Gill SK and Sitch A and Mehta S and O'Connor K and Lip GY and Kirchhof P and Strauss VY and Rahimi K and Camm AJ and Stanbury M and Griffith M and Townend JN and Gkoutos GV and RAte Therapy Evaluation Atrial Fibrillation (RATE-AF) control in permanent trial group},
doi = {10.1136/heartjnl-2020-318557},
year = {2021},
date = {2021-01-01},
urldate = {2021-01-01},
journal = {Heart (British Cardiac Society)},
keywords = {artificial intelligence, cardiology, health data science},
pubstate = {published},
tppubtype = {article}
}
2020
Wu, H; Zhang, H; Karwath, Andreas; Ibrahim, Z; Shi, T; Zhang, X; Wang, K; Sun, J; Dhaliwal, K; Bean, D; Cardoso, V R; Li, K; Teo, J T; Banerjee, A; Gao-Smith, F; Whitehouse, T; Veenith, T; Gkoutos, G V; Wu, X; Dobson, R; Guthrie, B
Ensemble learning for poor prognosis predictions: a case study on SARS-CoV2 Journal Article
In: J Am Med Inform Assoc, 2020, ISSN: 1067-5027 (Print) 1067-5027.
Links | BibTeX | Tags: artificial intelligence, COVID-19, health data science, machine learning
@article{RN18,
title = {Ensemble learning for poor prognosis predictions: a case study on SARS-CoV2},
author = {H Wu and H Zhang and Andreas Karwath and Z Ibrahim and T Shi and X Zhang and K Wang and J Sun and K Dhaliwal and D Bean and V R Cardoso and K Li and J T Teo and A Banerjee and F Gao-Smith and T Whitehouse and T Veenith and G V Gkoutos and X Wu and R Dobson and B Guthrie},
doi = {10.1093/jamia/ocaa295},
issn = {1067-5027 (Print) 1067-5027},
year = {2020},
date = {2020-01-01},
urldate = {2020-01-01},
journal = {J Am Med Inform Assoc},
keywords = {artificial intelligence, COVID-19, health data science, machine learning},
pubstate = {published},
tppubtype = {article}
}
2019
Althubaiti, Sara; Karwath, Andreas; Dallol, Ashraf; Noor, Adeeb; Alkhayyat, Shadi Salem; Alwassia, Rolina; Mineta, Katsuhiko; Gojobori, Takashi; Beggs, Andrew D; Schofield, Paul N; Gkoutos, Georgios V; Hoehndorf, Robert
Ontology-based prediction of cancer driver genes Journal Article
In: Scientific Reports, vol. 9, no. 1, pp. 17405, 2019, ISSN: 2045-2322.
Links | BibTeX | Tags: bioinformatics, cancer, health data science
@article{RN16,
title = {Ontology-based prediction of cancer driver genes},
author = {Sara Althubaiti and Andreas Karwath and Ashraf Dallol and Adeeb Noor and Shadi Salem Alkhayyat and Rolina Alwassia and Katsuhiko Mineta and Takashi Gojobori and Andrew D Beggs and Paul N Schofield and Georgios V Gkoutos and Robert Hoehndorf},
url = {https://doi.org/10.1038/s41598-019-53454-1},
doi = {10.1038/s41598-019-53454-1},
issn = {2045-2322},
year = {2019},
date = {2019-01-01},
urldate = {2019-01-01},
journal = {Scientific Reports},
volume = {9},
number = {1},
pages = {17405},
keywords = {bioinformatics, cancer, health data science},
pubstate = {published},
tppubtype = {article}
}
2017
Karwath, Andreas; Hubrich, Markus; Kramer, Stefan
Artificial Intelligence in Medicine: 16th Conference on Artificial Intelligence in Medicine, AIME 2017, Vienna, Austria, June 21-24, 2017, Proceedings, Springer Springer International Publishing, Cham, 2017, ISBN: 978-3-319-59758-4.
Abstract | Links | BibTeX | Tags: alzheimer, artificial intelligence, deep learning, health data science, machine learning, medicine, visualization
@conference{karwath2017a,
title = {Convolutional Neural Networks for the Identification of Regions of Interests in PET Scans: A Study of Representation Learning for Diagnosing Alzheimer's Disease},
author = {Andreas Karwath and Markus Hubrich and Stefan Kramer},
editor = {en Teije, Annette and Popow, Christian and Holmes, John H. and Sacchi, Lucia},
url = {http://dx.doi.org/10.1007/978-3-319-59758-4_36},
doi = {10.1007/978-3-319-59758-4_36},
isbn = {978-3-319-59758-4},
year = {2017},
date = {2017-06-21},
urldate = {2017-06-21},
booktitle = {Artificial Intelligence in Medicine: 16th Conference on Artificial Intelligence in Medicine, AIME 2017, Vienna, Austria, June 21-24, 2017, Proceedings},
pages = {316-321},
publisher = {Springer International Publishing},
address = {Cham},
organization = {Springer},
abstract = {When diagnosing patients suffering from dementia based on imaging data like PET scans, the identification of suitable predictive regions of interest (ROIs) is of great importance. We present a case study of 3-D Convolutional Neural Networks (CNNs) for the detection of ROIs in this context, just using voxel data, without any knowledge given a priori. Our results on data from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) suggest that the predictive performance of the method is on par with that of state-of-the-art methods, with the additional benefit of potential insights into affected brain regions.},
keywords = {alzheimer, artificial intelligence, deep learning, health data science, machine learning, medicine, visualization},
pubstate = {published},
tppubtype = {conference}
}