Lars Frelin
Departmental Director of Education (GUA) responsible for educational matters. Associate Professor in Virology. Researcher on vaccines with a focus on antigen design. Expert in research infrastructure
- Department of Laboratory Medicine
- Division of Clinical Microbiology at Labmed
- VIVAC research group: Vaccines and Immunotherapies against Viruses And Cancer – Matti Sällberg
About me
I am an Associate Professor (Docent) in Virology at Karolinska Institutet and a member of the "Vaccines and Immunotherapies Against Viruses and Cancer" research group. I earned my Ph.D. in 2004 at Karolinska Institutet and completed my postdoctoral training at the Vaccine Research Institute of San Diego and The Scripps Research Institute, La Jolla, USA.
I am an experienced vaccine researcher, academic leader, and educator with strong expertise in virology and vaccinology. As a vaccine researcher, I have more than 20 years of experience in developing innovative therapeutic and prophylactic vaccines against viral diseases, including hepatitis B, C, and D, SARS-CoV-2, and Crimean-Congo virus. I have a proven track record of advancing vaccine candidates from concept to phase 1 clinical trials. I have established a comprehensive network within vaccine research, both nationally and internationally.
During my career, I have received several distinctions, including the honorary award from the Swedish Hepatitis C Association for initiating the research project “Vertical and Horizontal Health Communication: Case Hepatitis C” (2013), together with Gustaf Ahlén, Mauri Kaipainen, and Sofia Lundmark, and the Jonas Söderqvist Prize for basic research in virology and immunology (2007).
As an academic leader and educator, I have extensive experience in teaching, program- and course syllabus development, quality assurance, and strategic educational planning. I currently serve as Departmental Director of Education (GUA) and have previously held roles such as Programme Director for multiple study programs.
Research
My research focuses on the development of innovative vaccines against viral diseases. For more than 20 years, I have worked on vaccines targeting viral hepatitis (primarily hepatitis B, D, and C), and in recent years, I have also focused on vaccines against SARS-CoV-2, the virus causing COVID-19, as well as Crimean-Congo virus, which can lead to hemorrhagic fever.
The core of my work is advanced antigen design to create novel therapeutic and prophylactic vaccines for diseases where effective vaccines or treatments are currently lacking. Development is carried out in close collaboration with infectious disease specialists to identify clinical needs and the type of immune activation that may provide protection against infection.
Vaccine candidates are systematically evaluated across a range of model systems—from cell culture to various preclinical models—assessing their ability to induce humoral and cellular immune responses, efficacy and protection against infection, potential side effects, and ease of production.
Several vaccines have progressed from concept to clinical phase 1 trials, including candidates against hepatitis C, SARS-CoV-2, and Crimean-Congo virus. Currently in the pipeline are a therapeutic vaccine for hepatitis B and a prophylactic vaccine for hepatitis D.
Teaching
Experienced academic leader and educator with extensive expertise in virology, and vaccinology. Currently serving as Departmental Director of Education (GUA) at the Department of Laboratory Medicine, Karolinska Institutet, with overarching responsibility and decision-making authority for education at undergraduate and advanced levels.
Former Programme Director for the Study Programme in Biomedical Laboratory Science, Master’s Program in Diagnostic Cytology, and Master’s Program in Biomedical Laboratory Science. Skilled in program- and course syllabus development, quality assurance, and strategic educational planning.
Proven track record in teaching across undergraduate, graduate, and doctoral levels, and frequently engaged as an expert reviewer for higher education programs within the EU. Successfully supervised seven PhD students to completion (two as principal supervisor) and numerous bachelor and master’s students through their thesis projects.
Articles
- Article: MOL THER ADV. 2026;34(2):201710Aleman S; Ahlen G; Yan J; Ljungman P; Bergman P; Nordentoft CAB; Appelberg S; Alisjahbana A; Cadossi M; Salati S; Tobin K; Tuvesson O; Tegel H; Gidlund E-K; Weber F; Larsson O; Hoglund U; Buggert M; Hober S; Frelin L; Mirazimi A; Sallberg M
- Article: GASTROENTEROLOGY. 2024;167(3):522-537Tran CS; Kersten J; Yan J; Breinig M; Huth T; Poth T; Colasanti O; Riedl T; Faure-Dupuy S; Diehl S; Verhoye L; Li T-F; Lingemann M; Schult P; Ahlen G; Frelin L; Kuehnel F; Vondran FWR; Breuhahn K; Meuleman P; Heikenwaelder M; Schirmacher P; Bartenschlager R; Laketa V; Roessler S; Tschaharganeh DF; Saellberg M; Lohmann V
- Article: MOLECULAR THERAPY. 2024;32(2):540-555Yan J; Bangalore CR; Nikouyan N; Appelberg S; Silva DN; Yao H; Pasetto A; Weber F; Weber S; Larsson O; Hoglund U; Bogdanovic G; Grabbe M; Aleman S; Szekely L; Szakos A; Tuvesson O; Gidlund E-K; Cadossi M; Salati S; Tegel H; Hober S; Frelin L; Mirazimi A; Ahlen G; Sallberg M
- Article: GUT. 2023;72(6):1186-1195Burm R; Maravelia P; Ahlen G; Ciesek S; Perez NC; Pasetto A; Urban S; Van Houtte F; Verhoye L; Wedemeyer H; Johansson M; Frelin L; Sallberg M; Meuleman P
- Journal article: JOURNAL OF HEPATOLOGY. 2023;78:s1038Sällberg M; Frelin L; Ahlén G; Yan J; Maravelia P; Cunnah P; Ricardo A-R; Mertens N; Bethell R
- Article: EMBO MOLECULAR MEDICINE. 2022;14(10):e15821Appelberg S; Ahlen G; Yan J; Nikouyan N; Weber S; Larsson O; Hoglund U; Aleman S; Weber F; Perlhamre E; Apro J; Gidlund E-K; Tuvesson O; Salati S; Cadossi M; Tegel H; Hober S; Frelin L; Mirazimi A; Sallberg M
- Journal article: JOURNAL OF HEPATOLOGY. 2022;77:s860Frelin L; Maravelia P; Burm R; Ni Y; Ahlén G; Verhoye L; Van Houtte F; Pasetto A; Urban S; Meuleman P; Sällberg M
- Article: JOURNAL OF INFECTIOUS DISEASES. 2021;223(1):128-138Maravelia P; Frelin L; Ni Y; Perez NC; Ahlen G; Jagya N; Verch G; Verhoye L; Pater L; Johansson M; Pasetto A; Meuleman P; Urban S; Sallberg M
- Article: CLINICAL & TRANSLATIONAL IMMUNOLOGY. 2021;10(7):e1306Sandberg JT; Varnaite R; Christ W; Chen P; Muvva JR; Maleki KT; Garcia M; Dzidic M; Folkesson E; Skagerberg M; Ahlen G; Frelin L; Sallberg M; Eriksson LI; Rooyackers O; Sonnerborg A; Buggert M; Bjorkstrom NK; Aleman S; Stralin K; Klingstrom J; Ljunggren H-G; Blom K; Gredmark-Russ S
- Article: JOURNAL OF IMMUNOLOGY. 2020;205(9):2437-2446Varnaite R; Garcia M; Glans H; Maleki KT; Sandberg JT; Tynell J; Christ W; Lagerqvist N; Asgeirsson H; Ljunggren H-G; Ahlen G; Frelin L; Sallberg M; Blom K; Klingstrom J; Gredmark-Russ S
- Article: HUMAN VACCINES & IMMUNOTHERAPEUTICS. 2020;16(2):251-268Whitacre DC; Peters CJ; Sureau C; Nio K; Li F; Su L; Jones JE; Isogawa M; Sallberg M; Frelin L; Peterson DL; Milich DR
- Article: GUT. 2018;67(8):1525-1535Levander S; Holmstrom F; Frelin L; Ahlen G; Rupp D; Long G; Bartenschlager R; Sallberg M
- Journal article: JOURNAL OF HEPATOLOGY. 2018;68:s307Söderholm J; Buesch K; Frelin L; Brolund A; Kövamees J; Sällberg M; Lagging M
- Article: JOURNAL OF PEDIATRIC GASTROENTEROLOGY AND NUTRITION. 2018;66(1):106-111Einberg AP; Brenndorfer ED; Frelin L; Hallberg L; Sallberg M; Fischler B
- Article: JOURNAL OF PEDIATRIC GASTROENTEROLOGY AND NUTRITION. 2017;65(6):608-612Einberg AP; Duberg A-S; Filipovich O; Nystrom J; Zhirkov A; Brenndorfer ED; Frelin L; Rukoiatkina E; Lobzin Y; Sallberg M; Fischler B; Lutckii A
- Article: JOURNAL OF VIROLOGY. 2017;91(9):e00010-e00017Balasiddaiah A; Davanian H; Aleman S; Pasetto A; Frelin L; Sallberg M; Lohmann V; Koh S; Bertoletti A; Chen M
- Article: VACCINE. 2016;34(25):2821-2833Levander S; Sallberg M; Ahlen G; Frelin L
- Article: SCIENTIFIC REPORTS. 2016;6:24991Functional differences in hepatitis C virus nonstructural (NS) 3/4A-and 5A-specific T cell responsesHolmstrom F; Chen M; Balasiddaiah A; Sallberg M; Ahlen G; Frelin L
- Article: METHODS IN MOLECULAR BIOLOGY. 2016;1403:221-244Ahlén G; Frelin L
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All other publications
- Patent: 2026Chimeric hepatitis D virus antigen and hepatitis B virus pre S1 genes for use alone or in vaccines containing hepatitis B virus genesFrelin L; Sällberg M
- Patent: 2024COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING HEPATITIS A AND E.Sällberg M; Frelin L; Ahlén G; Bethell R
- Patent: 2024COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING CRIMEAN CONGO HEMORRHAGIC FEVER VIRUSSällberg M; Frelin L; Ahlén G
- Conference publication: JOURNAL OF HEPATOLOGY. 2023;78:S1038Sallberg M; Frelin L; Ahlen G; Yan J; Maravelia P; Cunnah P; Ricardo A-R; Mertens N; Bethell R
- Preprint: BIORXIV. 2023Tran CS; Kersten J; Breinig M; Yan J; Poth T; Colasanti O; Riedl T; Faure-Dupuy S; Diehl S; Verhoye L; Li T-F; Lingemann M; Schult P; Ahlén G; Frelin L; Kühnel F; Breuhahn K; Vondran FWR; Meuleman P; Heikenwälder M; Schirmacher P; Sällberg M; Bartenschlager R; Laketa V; Tschaharganeh DF; Lohmann V
- Conference publication: MOLECULAR THERAPY. 2023;31(4):358-359Ahlen G; Yan J; Appelberg SA; Frelin L; Mirazimi A; Sallberg M
- Patent: 2022Chimeric hepatitis D virus antigen and hepatitis B virus pre S1 genes for use alone or in vaccines containing hepatitis B virus genesFrelin L; Sällberg M
- Conference publication: HEPATOLOGY. 2022;76:S333Frelin L; Maravelia P; Burm RJ; Ahlen G; Verhoye L; Van Houtte F; Meuleman P; Sallberg M
- Patent: 2022COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING CORONAVIRUSESFrelin L; Sällberg M; Ahlén G
- Patent: 2022COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING HEPATITIS B AND DFrelin L; Sällberg M; Mertens N
- Conference publication: JOURNAL OF HEPATOLOGY. 2022;77:S860Frelin L; Maravelia P; Burm R; Ni Y; Ahlen G; Verhoye L; Van Houtte F; Pasetto A; Urban S; Meuleman P; Saellberg M
- Preprint: RESEARCH SQUARE. 2022Appelberg S; Ahlen G; Nikoyan N; Yan J; Weber S; Larsson O; Höglund U; Aleman S; Weber F; Perlhamre E; Apro J; Gidlund E-K; Tuvesson O; Cadossi M; Salati S; Tegel H; Hober S; Frelin L; mirazimi A; Sallberg M
- Patent: 2021COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING CORONAVIRUSESFrelin L; Sällberg M
- Preprint: BIORXIV. 2021Sandberg JT; Varnaitė R; Christ W; Chen P; Muvva J; Maleki K; García M; Dzidic M; Folkesson E; Skagerberg M; Ahlén G; Frelin L; Sällberg M; The Karolinska COVID-19 Study Group; Eriksson L; Rooyackers O; Sönnerborg A; Buggert M; Björkström N; Aleman S; Strålin K; Klingström J; Ljunggren H-G; Blom K; Gredmark-Russ S
- Patent: 2021COMPOSITIONS AND METHODS FOR TREATING AND PREVENTING HEPATITIS B AND DFrelin L; Sällberg M
- Letter: JOURNAL OF VIROLOGY. 2020;94(18):e01279-e01220Ahlen G; Frelin L; Nikouyan N; Weber F; Hoglund U; Larsson O; Westman M; Tuvesson O; Gidlund E-K; Cadossi M; Appelberg S; Mirazimi A; Sallberg M
- Preprint: BIORXIV. 2020Varnaitė R; García M; Glans H; Maleki K; Sandberg JT; Tynell J; Christ W; Lagerqvist N; Asgeirsson H; Ljunggren H-G; Ahlén G; Frelin L; Sällberg M; Blom K; Klingström J; Gredmark-Russ S
- Conference publication: MOLECULAR THERAPY. 2019;27(4):139Johansson M; Frelin L; Maravelia P; Asghar N; Melik W; Caro-Perez N; Pasetto A; Ahlen G; Sallberg M
- Conference publication: MOLECULAR THERAPY. 2019;27(4):144Maravelia P; Frelin L; Perez NC; Pasetto A; Ahlen G; Ni Y; Urban S; Sallberg M
- Conference publication: JOURNAL OF VIRAL HEPATITIS. 2018;25:9-10Frelin L; Maravelia P; Jagya N; Verch G; Ni Y; Perez NC; Portoles I; Urban S; Saellberg M
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Grants
- Swedish Research Council1 January 2020 - 31 December 2022
- Swedish Research Council1 January 2017 - 31 December 2019
- The Swedish Council for Higher Education (UHR) - Linnaeus-Palme1 January 2016 - 1 January 2017
- Gilead Sciences Nordic Fellowship Programme1 January 2015 - 1 January 2016
- The Swedish Council for Higher Education (UHR)1 January 2014 - 1 January 2015
- Swedish Research Council1 January 2012 - 31 December 2014
- The Swedish Society for Medical Research1 January 2008 - 1 January 2009
Employments
- Research Infrastructure Development Officer, Medical Diagnostics Karolinska, Karolinska University Hospital, 2022-
- Researcher, Department of Laboratory Medicine, Karolinska Institutet, 2011-
Degrees and Education
- Docent, Karolinska Institutet, 2013
- Doctor Of Philosophy, Department of Laboratory Medicine, Karolinska Institutet, 2004
Leadership and responsibility assignments
- KI South representative in UoL-rådet - Karolinska Institutet, Karolinska Institutet, 2025-
- Director of core facility, Karolinska Institutet X-ray Irradiation Core Facility, Laboratory Medicine, Karolinska Institutet, 2024-
- Chair of the Educational Board (UN) at the Department of Laboratory Medicine, Laboratory Medicine, Karolinska Institutet, 2023-
- Departmental Director of Education (GUA), Laboratory Medicine, Karolinska Institutet, 2023-
- Chair of the Karolinska Institutet X-ray Irradiator working group, Karolinska Institutet, 2020-2023
- Facility Manager ANA Futura - one of KI:s major research and educational environment, Karolinska Institutet, 2020-
- Chair of the Drafting committee ANA Futura, Karolinska Institutet, Karolinska Institutet, 2019-
- Member of the management team at Department of Laboratory Medicine, Karolinska Institutet, Laboratory Medicine, Karolinska Institutet, 2017-
- Representative in the Steering committee ANA Futura, Karolinska Institutet, Karolinska Institutet, 2017-
- Member of the "Board of Infrastructure" at KI, Karolinska Institutet, 2017-
- Member of the “drafting group for work-integrated learning and education” (BG-VILU), KI, Karolinska Institutet, 2017-2018
- Karolinska Institutet representative in the "Working group for quality monitoring of clinical placement” organized under the “Extended Educational Council”., Karolinska Institutet, 2017-2019
- Director of studies, Programme Director for the Study Programme in Biomedical Laboratory Science and the Master´s Programme in Diagnostic Cytology/Biomedical Laboratory Science, Laboratory Medicine, Karolinska Institutet, 2016-2023
- Chair of the Program Council for the Study Programme in Biomedical Laboratory Science and the Master´s Programme in Diagnostic Cytology / Biomedical Laboratory Science at the Department of Laboratory Medicine, Laboratory Medicine, Karolinska Institutet, 2016-2023
- Representative (from KI) in the local animal welfare body Region Stockholm, Karolinska Institutet, 2015-
- Chairperson of the International Committee (BINC) for the Study Programme in Biomedical Laboratory Science, Laboratory Medicine, Karolinska Institutet, 2013-2016
- Coordinator. Laboratory of the Future (Framtidens lab – ANA8, later named ANA Futura), Karolinska Institutet., ANA Futura - one of KI:s major research and educational environments, Karolinska Institutet, 2013-2019
Distinction and awards
- Swedish Hepatitis C Association honorary award, Riksföreningen hepatit C honorary award for the initiative for the research project: “Vertical and Horizontal Health Communication: Case Hepatitis C”, 2013. The award is shared with Gustaf Ahlén, Mauri Kaipainen and Sofia Lundmark., 2013
- Jonas Söderqvists award for basic research in virology and immunology, 2007
Visiting research fellowships
- Postdoctoral fellow, Vaccine Research Institute of San Diego (VRISD), 2005-2006
- Visiting Investigator, Scripps Research Institute (TSRI), 2005-2006
Other expert reviewer/evaluation assignment
- Other evaluation assignments, www.a3es.pt, Portuguese Agency for Assessment and Accreditation of Higher Education (A3ES), 2014
News from KI
Events from KI
News from external media
- STIFTELSEN FLEMINGSBERG SCIENCE. 2019