Contact information
Research groups
Websites
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https://www.rdm.ox.ac.uk/about/our-clinical-facilities-and-mrc-units/DTU/current-trials/legend-d
LEGEND-D clinical trial
Ioannis Spiliotis
BSc (Hons), MBBS, MRCP, DPhil
Clinical Researcher
- Clinical Researcher, Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford
- Clinical Research Fellow, Oxford University Hospitals NHS Foundation Trust
- Consultant in Diabetes, Endocrinology and General Medicine, Milton Keynes University Hospital NHS Foundation Trust
Background
I am a consultant physician in diabetes, endocrinology and general medicine, as well as a clinical researcher. My aim is to better understand the effect aberrant glucagon secretion has on the pathophysiology of diabetes, and the impact various pharmacological interventions have on this system.
I have a background in Molecular Biology, and have been working in the field of islet physiology since 2010 alongside my clinical training. I completed my PhD at the University of Oxford in 2018, and I have also worked as part of the clinical islet transplantation team at the Churchill Hospital.
My research work focuses on investigating the hormone secretion profiles of islets in various forms of diabetes, with an emphasis on translating in vitro work into pilot clinical trials. I have completed a CT-IMP (clinical trial of investigational medicinal product) of low-dose sulfonylureas in patients with type 2 diabetes, which demonstrated improvement in fasting hyperglucagonemia. I am now extending this work to clinical studies in patients with MODY (maturity onset diabetes of the young) and type 1 diabetes.
Clinical trials
2023 (setting-up) Chief Investigator: Low-doseE GlibENclamdie and Dapagliflozin in Type 1 Diabetes (LEGEND-D) clinical trial
2017 – 2021: Chief Investigator: Dapagliflozin during Exercise for the PrevenTion of Hypos (DEPTH) (stopped due to COVID) (NCT03537131)
2017 – 2022 (completed) Chief Investigator: Glucagon in MODY (NCT03246828)
2016 – 2017 (completed) Chief Investigator: Low-doseE GlibENclamdie in Diabetes – part A (LEGEND-A) (NCT02830048)
Recent publications
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Reducing hyperglucagonaemia in type 2 diabetes using low-dose glibenclamide: Results of the LEGEND-A pilot study.
Journal article
Spiliotis II. et al, (2022), Diabetes Obes Metab, 24, 1671 - 1675
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Risk of second brain tumour after radiotherapy for pituitary adenoma or craniopharyngioma: a retrospective, multicentre, cohort study of 3679 patients with long-term imaging surveillance.
Journal article
Hamblin R. et al, (2022), Lancet Diabetes Endocrinol, 10, 581 - 588
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Low-dose treatment with sulfonylureas improves hyperglucagonemia after a glucose challenge in HNF1A-MODY individuals and Hnf1a(-/-) mice
Conference paper
Saponaro C. et al, (2022), DIABETOLOGIA, 65, S162 - S162
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HNF1A Deficiency Leads to Perturbed Glucagon Secretion in Humans
Conference paper
Saponaro C. et al, (2020), DIABETES, 69
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Somatostatin secretion by Na+-dependent Ca2+-induced Ca2+ release in pancreatic delta-cells.
Journal article
Vergari E. et al, (2020), Nat Metab, 2, 32 - 40
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The Use of Empagliflozin and Dulaglutide Improves Metabolic and Glycemia Outcomes in a Real-World Primary Care Setting
Conference paper
Spiliotis I. and Gallen IW., (2020), DIABETES, 69
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Loss of ZnT8 function protects against diabetes by enhanced insulin secretion.
Journal article
Dwivedi OP. et al, (2019), Nat Genet, 51, 1596 - 1606
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Insulin inhibits glucagon release by SGLT2-induced stimulation of somatostatin secretion.
Journal article
Vergari E. et al, (2019), Nat Commun, 10
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Electrophysiological properties of human beta-cell lines EndoC-βH1 and -βH2 conform with human beta-cells.
Journal article
Hastoy B. et al, (2018), Sci Rep, 8
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Does Islet Size Really Influence Graft Function After Clinical Islet Transplantation?
Journal article
Hughes SJ. et al, (2018), Transplantation, 102, 1857 - 1863
Websites
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Diabetes, Fat and Sugar - Behind the Headlines
Oxford BRC public lecture