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Dr. Yvonne Langan
Clinical Senior Lecturer, Clinical Medicine

Biography

Dr Langan is a Consultant in Clinical Neurophysiology in St James's Hospital. She undertook clinical training in Neurology and Neurophysiology in Dublin, London and Newcastle upon Tyne. She spent three years in the Department of Experimental Epileptology in the Institute of Neurology in Queen Square, London, undertaking research into Sudden Unexpected Death in Epilepsy (SUDEP). Dr Langan continues to be involved in research into SUDEP along with projects involving EEG and peripheral neurophysiology. She is President of the Irish Society of Clinical Neurophysiology and is active in teaching at undergraduate and postgraduate level.

Publications and Further Research Outputs

Peer-Reviewed Publications

Langan Y., Lynn E., The incidence of sudden unexpected death in epilepsy (SUDEP) in the Republic of Ireland, Seizure, 122, 2024, p34 - 38, p34-38 Journal Article, 2024 DOI

McKenna MC, O'Connor A, Lockhart A, Bogdanova-Mihaylova P, Brett F, Langan Y, Meaney J, Costigan D, Doherty CP, Bede P, Murphy SM, Hutchinson S., POLR3A-related disorders: expanding the clinical phenotype., J Neurol., 2024 Journal Article, 2024 DOI

McGonigle O., Russell C., Langan Y., Advice following a possible first seizure: what do patients attending for EEG remember?, Seizure, 113, 2023, p19 - 22, p19-22 Journal Article, 2023 DOI

Bergin P, Langan Y, Beghi E, Donner E, Cock H, D'Souza W, Thomas R, Scragg R, Invitiation to participate in a prospective case control study of sudden unexpected death in epilepsy, Epilepsia, 62, (5), 2021, p1280 - 1281 Journal Article, 2021 DOI

Togher Z, Redmond A, Troy E, Penugonda M, Crumlish N, Langan Y, Hutchinson S., A case of Urbach Wiethe disease asssociated with ictal fear, Neurology, American Academy of Neurology, Toronto, 2020, 2021 Poster, 2021 URL

Al Bayati F, McGrane C, Sweeney A, Langan Y., The role of ambulatory EEG in the investigation of paroxysmal events, Irish Medical Journal, 114, (3), 2021, p304 - 304 Journal Article, 2021

McKenna MC, Al-Hinai M, Bradley D, Doran E, Hunt I, Hutchinson S, Langan Y, O'Rourke D, Qasem R, Redmond J, Troy E, Doherty CP., Patients' Experiences of Remote Neurology Consultations during the COVID-19 Pandemic, European Neurology, 83, (6), 2021, p622 - 625 Journal Article, 2021 DOI

O Donnell M, Hunt I, McKenna MC, Armstrong C, Flynn C, Leonard N, Cryan J, Langan Y Redmond J., When you cannot 'keep your chin up'. An unusual case of head drop., Irish Neurological Association, virtual, October 2020, 2020 Poster, 2020

Moloney PB, Hutchinson S, Heskin J, Mulcahy F, Langan Y, Conlon NP, Linas BP, Takashi C, Cervantes-Arslanian AM., Possible N methyl D asparatate receptor antibody mediated encephalitis in the setting of HIV cerebrospinal escape., Journal of Neurology, 267, (5), 2020, p1348 - 1352 Journal Article, 2020 DOI

Fearon C, Lonergan R, Ferguson D, Byrne S, Bradley D, Langan Y, Redmond J., Very-late-onset Friedreich's ataxia: Diagnosis in a kindred with late-onset cerebellar ataxia, Practical Neurology, 1, (20), 2020, p55 - 58 Journal Article, 2020 DOI

Moloney P, Heskin J, Langan Y, Conlon NP, Mulcahy F, Hutchinson S, NMDAR encepalitis associated with HIV CNS escape., American Academy of Neurology, Philadelphia, April 2019, 2019 Poster, 2019 URL

Chalissery AJ, Munteanu T, Langan Y, Brett F, Redmond J., Diverse phenotype of hypokalaemic periodic paralysis within a family, Practical Neurology, 18, (1), 2018, p60 - 65 Journal Article, 2018 DOI

Brett F, Chen D, Loftus T, Langan Y, Looby S, Hutchinson S, Intravascular large B cell lymphoma presenting clinically as rapidly progressive dementia., Irish Journal of Medical Science, 187, (2), 2018, p319 - 322 Journal Article, 2018 DOI

Lynn E, Lyons S, Langan Y, Craig S, Doherty C, The role of alcohol dependency in deaths among people with epilepsy recorded by the National Drug-Related Deaths Index (NDRDI) in Ireland, 2004-2013, Seizure, 45, 2017, p52 - 55 Journal Article, 2017 DOI URL

Monaghan B, Chalissery A, Brett F, Langan Y, Redmond J., Congenital myasthenic syndrome presenting in the sixth decade, American Academy of Neurology, Boston, 2017, 2017 Poster, 2017 URL

Canavan J, Langan Y, Epilepsy mortality in Ireland, Irish Neurological Association , Limerick, May 2016, 2016 Poster, 2016

Lonergan R, Ferguson D, Byrne S, Bradley D, Langan Y, Redmond J., Diagnosis of Friedrich's Ataxia in late onset progressive cerebellar ataxia, Neurology, American Academy of Neurology, Washington DC, April 2015, 84, (14), 2015 Poster, 2015 URL

E.Kelleher, P.McNamara, B. Fitzmaurice, R.Walsh, Y.Langan, P.Whitty, M.Gill, A.Vincent, C.Doherty, A.Corvin, Prevalence Rate of N-methyl-d-aspartate (NMDA) Receptor Antibodies in First Episode Psychosis, European Psychiatry, 23rd European Congress of Psychiatry, Vienna, 28-31 March 2015, 30, (Supp 1), Science Direct, 2015, pp1568- Conference Paper, 2015 URL DOI

O Dowd S, Munteau T, Hardiman D, Langan Y, Brett F, Redmond J., Ockham's razor of Hickham's dictum? The diagnostic journey of a patient with proximal myopathy, Association of British Neurologists, 2015 Poster, 2015 URL

Munteau T, Redmond J, Langan Y, Brett F, Periodic muscle paralysis- a different perspective, American Academy of Neurology, Washington DC, April 2015, 2015 Poster, 2015 URL

Donohue F, Doherty C, Langan Y, White M, Morrow S, White M, Hayes CB , Mortality from SUDEP and Status Epilepticus in Ireland, Irish Medical Journal, 106, (3), 2013, p91 - 92 Journal Article, 2013 Other TARA - Full Text URL

Donohue, F., Doherty, C., Langan, Y., White, M., White, M., Morrow, S., Hayes, C., Mortality due to sudep and status epilepticus, Irish Medical Journal, 106, (3), 2013, p1-2 Journal Article, 2013

Laffan A, Langan Y, Understanding EEG indications and reports: a survey of NCHDs, Irish Medical Journal, 106, (2), 2013, p59 - 60 Journal Article, 2013 URL

Iqbal M, Connolly S, Langan Y, Redmond J., A case of Lambert-Eaton myasthenic syndrome with possible myasthenia gravis, Irish Medical Journal, 105, 2012, p183 - 184 Journal Article, 2012 URL

Lamberts RJ, Thjis Rd, Laffan A., Langan Y, Sander JW, Sudden unexpected death in epilepsy:people with nocturnal seizures may be at highest risk, Epilepsia, 53, (2), 2012, p253 - 257 Journal Article, 2012 DOI

O'Connor G, Bradley D, McNamara P, Connolly S, Langan Y, Redmond J., Late-onset CMT phenotype caused by a novel mutation in the MPZ gene, European Journal of Neurology, 19, 2012, p65 - 66 Journal Article, 2012 DOI

Hersdorffer DC, Tomson T, Benn E, Sander JW, Nilsson L, Langan Y, Walczak TS, Beghi E, Brodie MJ, Hauser A., ILAE Commission on Epidemiology; subcommission on mortality. Do antiepileptic drugs or tonic clonic seizure frequency increase SUDEP risk?, Epilepsia, 53, (2), 2012, p249 - 252 Journal Article, 2012 DOI

Hersdorffer DC, Tomson T, Benn E, Sander JW, Nilsson L, Langan Y, Walczak TS, Beghi E, Brodie MJ, Hauser A., ILAE Commission on Epidemiology; subcommission on mortality. Combined analysis of risk factors for SUDEP., Epilepsia, 52, (6), 2011, p1150 - 1159 Journal Article, 2011 DOI

O Dwyer C, Bennett K, Langan Y, Fan CW, Kenny RA, EEG findings in vasovagal syncope, Irish Gerontological Society, 2011 Poster, 2011 URL

McNamara PH, Costelloe L, Langan Y, Redmond J., Aquaporin-4 seropositivity in a patient with coeliac disease but normal neurological examination and imaging, Journal of Neurology, 258, 2011, p702 - 703 Journal Article, 2011 DOI

O Dwyer C, Bennett K, Langan Y, Fan CW, Kenny RA, Electroencephalographic findings in different age groups with vasovagal syncope, Journal of Cardiovascular Electrophysiology, Venice Arrhythmias 2011, Venice, 2011, 2011 Poster, 2011 URL

C O'Dwyer, K Bennett, Y Langan, CW Fan, RA Kenny., Amnesia for loss of consciousness is common in vasovagal syncope., Europace, 13, (7), 2011, p1040 - 1045 Journal Article, 2011 TARA - Full Text DOI

O Dwyer C, Bennett K, Langan Y, Fan CW, Kenny RA, Does amnesia for loss of consciousness occur with vasovagal syncope?, Journal of Cardiovascular Electrophysiology, Venice Arrhythmias 2011, Venice, 2011 Poster, 2011 URL

Lambert RJ, Laffan A, Thijs RD, Sander JW, Langan Y, Circadian seizure patterns in SUDEP: Patients with nocturnal seizures are at highest risk., Epilepsia, 29th International Epilepsy Congress, Rome, 52, (6), 2011, pp4 - 22 Oral Presentation, 2011 URL

McNamara PH, Costelloe L, Langan Y, Redmond J., Anti-Yo positive dorsal root ganglionopathy, Journal of Neurology, 258, 2010, p1400 - 1401 Journal Article, 2010 DOI

Langan Y, Nashef L, Sander JWAS, Case control study of SUDEP, Neurology, 64, (7), 2005, p1131 - 1133 Journal Article, 2005 DOI

Sudden unexpected death in epilepsy in, editor(s)S Shorvon, D Fish, E Dodson, E Perucca , Epilepsy Treatment 2nd Edition, UK, Oxford: Blackwell, 2004, pp43 - 49, [Langan Y, Nashef L.] Book Chapter, 2004

Langan Y, Gholkar A, Ellison D, Jenkins A, Schofield I, Lai M., New onset non-epileptic attacks after successful epilepsy surgery., Association of British Neurologists, London, March 2004, 2004 Poster, 2004

Langan Y, Nashef L., Sudden unexpected death in epilepsy, Advances in Clinical Neuroscience and Rehabilitation, 2, 2003, p6 - 8 Journal Article, 2003

Langan Y, Lucas R, Jewell H, Toublanc N, Schaefer H, Sander JW, Patsalos P., Talamapanel, a new antiepileptic drug: single and multiple does pharmacokinetics and initial one week experience in patients with chronic intractable epilepsy, Epilepsia, 44, (1), 2003, p46 - 53 Journal Article, 2003 DOI

Langan Y, Nashef L, Sander JWAS, Prevention of sudden unexpected death in epilepsy, Journal of Neurology, Neurosurgery and Psychiatry, Association of British Neurologists , Cape Town, January 2003, 2003 Oral Presentation, 2003 URL

Langan Y, Nashef L, Sander JWAS, Certification of deaths attributable to epilepsy, Journal of Neurology, Neurosurgery and Psychiatry, 73, (6), 2002, p751 - 752 Journal Article, 2002 DOI

Langan Y, Sander JWAS, Sudden unexpected death in epilepsy, CNS Drugs, 13, (5), 2000, p337 - 349 Journal Article, 2000 URL

Langan Y, Nashef L, Sander JWAS, Sudden unexpected death in epilepsy: a series of witnessed deaths., Journal of Neurology, Neurosurgery and Psychiatry, 68, (2), 2000, p211 - 213 Journal Article, 2000 DOI

Langan, Y., Sander, J.W.A.S., Sudden unexpected death in patients with epilepsy: Definition, epidemiology and therapeutic implications, CNS Drugs, 13, (5), 2000, p337-349 Journal Article, 2000 DOI

Langan Y, Sudden unexpected death in epilepsy(SUDEP): risk factors and case control studies, Seizure, 9, (3), 2000, p179 - 183 Journal Article, 2000 DOI

Langan Y, Duncan JS, Sander JW., An audit of the perdeived efficacy and tolerability of gabapentin therapy in an outpatient cohort with chronic epilepsy, European Neurology, 41, (2), 1999, p111 - 113 Journal Article, 1999 DOI

Langan Y, Sander JWAS, Patients with epilepsy who die do not always have cardiac disease, Archives of Neurology, 56, (2), 1999, p249 - 249 Journal Article, 1999 DOI

Langan Y, Nashef L, Sander JWAS, The certification of deaths due to epilepsy, Association of British Neurologists, London, April 1999, 1999 Poster, 1999

Lhatoo SD, Langan Y, Sander JWAS, Sudden unexpected death in epilepsy, Postgraduate Medical Journal, 75, (890), 1999, p706 - 709 Journal Article, 1999 DOI

Hennessy MJ, Langan Y, Elwes RDC, Binnie CD, Polkey CE, Nashef L., A study of mortality after temporal lobe epilepsy surgery, Neurology, 53, (6), 1999, p1276 - 1283 Journal Article, 1999 DOI

Langan Y, Nashef L., Sudden unexpected death in epilepsy, Neurology Reviews International, 3, 1999, p5 - 8 Journal Article, 1999

Lhatoo SD, Langan Y, MacDonald BK, Zeidan S, Sander JW, Sudden unexpected death: a rare event in a large comminity based prospective cohort with newly diagnosed epilepsy and high remission rates., Journal of Neurology, Neurosurgery and Psychiatry, 66, (5), 1999, p692 - 693 Journal Article, 1999 DOI

Lhatoo SD, Langan Y, Sander JWAS, Sudden death in epilepsy- an overview, Brazilian Journal of Epilepsy and Clinical Neurophysiology, 4, 1998, p167 - 170 Journal Article, 1998

Langan Y, Nolan M, Hutchinson M., The incidence of sudden unexpected death in South Dublin and Wicklow, Seizure, 7, (5), 1998, p355 - 358 Journal Article, 1998 DOI

Gavin C, Langan Y, Hutchinson M., Cranial and peripheral neuropathy after EBV infection., Postgraduate Medical Journal, 73, (861), 1997, p419 - 420 Journal Article, 1997 DOI

, Cranial and peripheral neuropathy due to Epstein-Barr virus infection., Postgraduate medical journal, 1997 Journal Article, 1997 DOI

Non-Peer-Reviewed Publications

Langan Y, SUDEP and Alcohol, Royal Society of Medicine Epilepsy session, RSM, London, 26/01/21, 2021, B McDonald Invited Talk, 2021

Research Expertise

Description

I have a particular interest in epilepsy mortality and sudden unexpected death in epilepsy (SUDEP) has been a major focus of my research. I was responsible for the design, conduct and analysis of a case control study examining risk factors for SUDEP, the largest such study to date which has established me as an expert in the field. I was awarded the Hastings Fellowship in support of this work which was also supported by the UK charity Epilepsy Bereaved. This work made a significant contribution to the body of knowledge on the subject and has informed guidelines such as those produced by NICE. This work led to international collaboration with with other experts as part of the work of the International League against Epilepsy(ILAE) commission on epidemiology. I have supported and supervised a Research Fellow in the Department of Clinical Neurophysiology to investigate the role of baroreceptor sensitivity in the genesis of SUDEP, work which was successfully awarded MD and which was supporting by funding from Epilepsy Ireland. This work was awarded the Kirker prize in epilepsy at the Irish Neurological Association meeting in 2013. I have undertaken a study on epilepsy mortality in Ireland in collaboration with the Health Research Board(HRB)and the Irish coroners. We have examined coronial records from 2019 in order to identify and categorise deaths in those with epilepsy with a particular focus on epilepsy related deaths. This work is supported by a grant from the Irish Institute of Clinical Neuroscience and Epilepsy Ireland. This work has resulted in a publication of the incidence of SUDEP in Ireland with work ongoing on other epilepsy related deaths. Presently I am on the steering committee of an International multicentre case control study in SUDEP coordinated by Prof. Peter Bergin in New Zealand and am awaiting ethics approval to identify Irish cases. I am examining EEG changes in those undergoing CAR-T therapy. Further work on this topic will be undertaken with Dr Roisin McMackin of the McMackin Institute. I am one of a number of principal investigators from a number of schools who have been awarded a TRDA undertaking research into disorders of brain development across the lifespan.

Projects

  • Title
    • Disorders of brain development across the slifespan: insights from rare genetic conditions
  • Funding Agency
    • TRDA
  • Date From
    • 01/09/2025
  • Date To
    • 01/09/2030
  • Title
    • The incidence of sudden unexpected death in epilepsy (SUDEP) in Ireland
  • Summary
    • This work was undertaken in collaboration with the Health Research Board and coronial records form 2019 were examined to allow the identification of SUDEP cases and the subsequent calculation of an incidence rate for Ireland.
  • Funding Agency
    • Epilepsy Ireland, Irish Institute of Clinical Neuroscience
  • Date From
    • 2019
  • Date To
    • 2025
  • Title
    • Epilepsy related deaths in Ireland
  • Summary
    • In collaboration with the HRB coronial records for 2019 have been examined in an effort to identify non SUDEP epilepsy related deaths.
  • Funding Agency
    • Epilepsy Ireland, Irish Institute of Clinical Neuroscience
  • Date From
    • 2020
  • Title
    • EEG in CAR-T patients
  • Summary
    • To examine whether EEG changes in patients being treated with CAR-T are predictive of ICANS
  • Funding Agency
    • Consultant Innovation fund
  • Title
    • Case control study of SUDEP
  • Summary
    • International SUDEP case control study
  • Title
    • Baroreceptor sensitivity in epilepsy
  • Summary
    • examine whether baroreceptor sensitivity is altered on those with epilepsy and whether this is important in SUDEP
  • Funding Agency
    • Epilepsy Ireland
  • Title
    • Case control study of SUDEP
  • Summary
    • UK wide case control study of SUDEP to identify risk factors
  • Funding Agency
    • Hastings fellowhip
  • Title
    • ultra long EEG
  • Funding Agency
    • Innovation funding

Keywords

Clinical neurology; EEG; ELECTROMYOGRAPHY (EMG); EPILEPSY; MEDICAL EDUCATION; NEUROPHYSIOLOGY

Recognition

Memberships

Fellowhip Royal College of Physicians of Ireland 15/10/2025

Royal College of Physicians of Ireland 1993 – present

The Irish Institute of Clinical Neuroscience 2009 – present

International League against Epilepsy 2015 – present

Irish Society of Clinical Neurophysiology 2009 – present