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I am a full time consultant Gastroenterologist at the Lister and New QEII Hospitals and am the lead for Upper GI Cancer at East & North Herts Trust. My specialist interests include reflux and heartburn, Barrett’s oesophagus, IBS, constipation, inflammatory bowel disease, diagnostic and therapeutic endoscopy, upper GI physiology testing, investigation of abnormal liver function tests and anaemia. I perform diagnostic and therapeutic endoscopy, and run the Upper GI physiology testing service for reflux and swallowing problems.
In addition to my clinic interests I am the Trust Lead for investigating Cancer of Unknown Primary source (CUP) at East & Norther Herts and have an active role as a member of the Regional Upper GI Cancer Alliance. I am also the lead for the Regional Laser service for oesophageal cancer
I obtained my BSc in Neurosciences at Sussex University in 1998 and qualified from Leicester/Warwick Medical School in 2006 with a prize for Clinical medicine. I undertook my speciality training in North West London between 2012 and 2018 working at centres of excellence including St Marks, St Mary’s and Royal London Hospitals. In 2015 I received the Derek Butler Award and subsequently gained my PhD in 2018 from Queen Mary University of London for research into the biology of Barrett’s oesophagus and its role in cancer development. I have produced a number of publications in peer-reviewed scientific journals and presented presented this work at international meetings: BSG, DDW and UEGW.
I am closely involved in medical education and training, having been the Endoscopy training lead for East & North Herts NHS Trust. I regularly teach on regional JAG accredited endoscopy training courses.
U Kamran, D King, M Banks, D Nylander, J Evans et. al. Assessment of the role of the Edinburgh dysphagia score in referral triage in a national service evaluation of the urgent suspected upper gastrointestinal cancer pathway Alimentary Pharmacology and Therapeutics. Mar 2022; https://doi.org/10.1111/apt.16811
JA Evans, E Carlotti, SAC McDonald et. al. Clonal transitions and phenotypic evolution in Barrett’s Esophagus, Gastroenterology, 2021 Apr; doi: https://doi.org/10.1101/2021.03.31.21252894
JA Evans, S A McDonald The complex, clonal and controversial nature of Barretts oesophagus . Adv Exp Med Biol. 2016 :908:27-20.
Woodland P, Ooi JL, Grassi F, Nikaki K, Lee C, Evans JA, Koukias N, Triantos C, McDonald SA,Peiris M, Aktar R, Blackshaw LA, Sifrim D. Superficial oesophageal mucosal afferent nerves may contribute to reflux hypersensitivity in non-erosive reflux disease. Gastroenterology. 2017 Nov;153(5):1230-1239. doi: 10.1053/j.gastro.2017.07.017. Epub 2017 Jul 20.
JA Evans, VS Menon, Correspondence : Randomised clinical trial comparing feeding jejunostomy with nasoduodenal placement in patient undergoing oesophagectomy, Br J Surgery Jan 2007 Vol 94 Issue 1
Recent Abstract Publications:
BSG 2022: Mohandas D, Martini I, Shaw K, J Evans, D Morris. Avoiding unnecessary gastroscopy:- using Cytosponge in routine clinical practice can aid appropriate Barrett’s surveillance . Gut 2022;71:A164.
BSG 2022: Morris D, Mohandas D, Martini I, Shaw K, J Evans. Large single-site evaluation of Cytosponge in a secondary care reflux service over 14 months. Gut 2022; 71: A164-A165.
BSG 2022 : Martini I, Mohandas D, Shaw K, J Evans, D Morris. Changing strategy for Barrett’s surveillance using Cytosponge and gastroscopy over 14 months during COVID19. Gut 2022; 71: A163-A164.
BSG 2022 : D Morris D, K Shaw K, F Cole F, J Evans. Cytosponge in the real-world: triage of Barrett’s surveillance and reflux in a single non-specialist hospital. Gut 2022; 71: A94
BSG 2021 : Kamran U, King D, Banks M, J Evans Et. al Validation of Edinburgh dysphagia score in a national evaluation of upper GI cancer 2ww pathway Gut 2021; 70 :A1-A2 (Oral)
DDW 2021: L Gambetta, M Elsegary, K Shaw, M Villas, J Evans, D Morris, Clinical use of Cytosponge as a tool to stratify low risk patients for Gastroscopy: A large UK single centre study.
UEGW 2017: J Evans, E Carlotti, M Jansen & SA McDonald, Different gland phenotypes are clonally related in Barrett’s eosophagus and gland phenotypic diversity is increased in patients who have progressed to dysplasia.
UEGW 2017: Woodland P, Ooi JL, Grassi F, Nikaki K, Lee C, Evans JA, Koukias N, Triantos C, McDonald SA,Peiris M, Aktar R, Blackshaw LA, Sifrim D. The Location Of Oesophageal Mucosal Afferent Nerves Are More Superficial In Patients With NERD Than In Healthy Volunteers And Patients With Barrett’s Oesophagus
I pride myself on giving unhurried, patient centred consultations and providing high quality, evidence based care with appropriate investigations, treatments and advice that are tailored to each individual. I enjoy playing golf, cycling, cooking and spending time with my two children.
