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Mark Asquith

  • (503) 494-3371
    • Assistant Professor of Medicine, Division of Arthritis and Rheumatic Diseases School of Medicine

Dr. Mark Asquith is an Assistant Professor in the Division of Arthritis and Rheumatic Disease (Department of Medicine) at Oregon Health & Science University in Portland, OR. He is a recipient of grant awards from the National Institutes of Health (NIH), Collins Medical Trust, The Medical Research Foundation and the Rheumatology Research Foundation. He is also a recipient of a Jane Bruckel award from the Spondylitis Association of America. He established his laboratory at OHSU under the supervision of Prof. Jim Rosenbaum, with whom he did a postdoctoral fellowship. Profs. Asquith and Rosenbaum continue to collaborate on several clinical and basic research projects to this day.

Dr. Asquith has researched the microbiome and immune system for over a decade. His current research focus has two major aims: 1) to better understand the role of the microbiome in the development of chronic inflammatory diseases such as Ankylosing Spondylitis (an inflammatory disease of the spine), inflammatory bowel disease and uveitis (an inflammatory disease of the eye) and 2) to identify novel diagnostic and therapeutic approaches based on the microbiome for these inflammatory diseases. He has several collaborations locally, nationally and internationally to investigate these conditions as well as several other microbiome-related diseases investigated by collaborators such as psoriasis, rheumatoid arthritis (RA), multiple sclerosis (MS), chronic fatigue syndrome, age-related macular disease (AMD), autism and urinary incontinence.

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Areas of interest

  • Microbiota
  • Gastrointestinal microbiome
  • Inflammation
  • Uveitis
  • Inflammatory bowel diseases


  • B.Sc., University of Nottingham, Nottingham United Kingdom 2004
  • M.Sc., London School of Hygiene and Tropical Medicine, University of London, London United Kingdom 2005
  • Ph.D., University of Oxford, School of Pathology, Oxford United Kingdom 2010


  • Rosenbaum JT, Asquith M. The microbiome and HLA-B27-associcated acute anterior uveitis. Nat Rev Rheumatol. 2018 Oct 9. doi: 10.1038/s41584-018-0097-2. PMID: 30301938.

  • Karstens L, Asquith M, Caruso V, Rosenbaum JT, Fair DA, Braun J, Gregory WT, Nardos R, McWeeney SK. Community profiling of the urinary microbiota: considerations for low-biomass samples. Nat Rev Urol. 2018 Oct 12. doi: 10.1038/s41585-018-0104-z. PMID: 30315209.

  • Gill T, Asquith M, Brooks SR, Rosenbaum JT, Colbert RA. Effects of HLA-B27 on Gut Microbiota in Experimental Spondyloarthritis Implicate an Ecological Model of Dysbiosis. Arthritis Rheumatol. 2018 Apr;70(4):555-565. doi: 10.1002/art.40405. PMID: 29287307.

  • Asquith M, Davin S, Stauffer P, Michell C, Janowitz C, Lin P, Ensign-Lewis J, Kinchen JM, Koop DR, Rosenbaum JT. Intestinal Metabolites Are Profoundly Altered in the Context of HLA-B27 Expression and Functionally Modulate Disease in a Rat Model of Spondyloarthritis. Arthritis Rheumatol. 2017 Oct;69(10):1984-1995. doi: 10.1002/art.40183. PMID 28622455.

  • Asquith M, Rosenbaum JT. The interaction between host genetics and the microbiome in the pathogenesis of spondyloarthropathies. Curr Opin Rheumatol. 2016 Jul;28(4):405-12. doi: 10.1097/BOR.0000000000000299. PMID: 27152700.

  • Asquith MJ, Stauffer P, Davin S, Mitchell C, Lin P, Rosenbaum JT. Perturbed Mucosal Immunity and Dysbiosis Accompany Clinical Disease in a Rat Model of Spondyloarthritis. Arthritis Rheumatol. 2016 Sep;68(9):2151-62. doi: 10.1002/art.39681. PMID: 26992013.

  • Asquith M, Elewaut D, Lin P, Rosenbaum JT. The role of the gut and microbes in the pathogenesis of spondyloarthritis. Best Pract Res Clin Rheumatol. 2014 Oct;28(5):687-702. doi: 10.1016/j.berh.2014.10.018. PMID: 25488778.

  • Lin P, Bach M, Asquith M, Lee AY, Akileswaran L, Stauffer P, Davin S, Pan Y, Cambronne ED, Dorris M, Debelius JW, Lauber CL, Ackermann G, Baeza YV, Gill T, Knight R, Colbert RA, Taurog JD, Van Gelder RN, Rosenbaum JT. HLA-B27 and human β2-microglobulin affect the gut microbiota of transgenic rats. PLoS One. 2014 Aug 20;9(8):e105684. PMID: 25140823.

  • Asquith M, Haberthur K, Brown M, Engelmann F, Murphy A, Al-Mahdi Z, Messaoudi I. Age-dependent changes in innate immune phenotype and function in rhesus macaques (Macaca mulatta). Pathobiol Aging Age Relat Dis. 2012;2. doi: 10.3402/pba.v2i0.18052. PMID: 22953039.

  • Coccia M, Harrison OJ, Schiering C, Asquith MJ, Becher B, Powrie F, Maloy KJ. IL-1β mediates chronic intestinal inflammation by promoting the accumulation of IL-17A secreting innate lymphoid cells and CD4(+) Th17 cells. J Exp Med. 2012 Aug 27;209(9):1595-609. PMID: 22891275.

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