Mollie Carruthers

Clinician Investigator, MD, FRCPC


  • Clinical associate professor at the University of British Columbia, Division of Rheumatology
  • Rheumatologist at Artus Health Centre in Vancouver

Research Interests

  • IgG4-related disease, vasculitis, rheumatoid arthritis and systemic lupus erythematosus

Dr. Mollie Carruthers is an academic rheumatologist practicing at Artus Health Centre in Vancouver, BC. She completed both her internal medicine and rheumatology training at Harvard Medical School affiliated Massachusetts General Hospital and medical school at Tulane University. She is a clinical associate professor at the University of British Columbia, Division of Rheumatology.

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Dr. Carruthers is actively involved in clinical research. She has authored 20+ peer-reviewed publications including first authorship on a prospective clinical trial using Rituximab for IgG4-related disease (PMID: 25667206) as well as test characteristics of serum IgG4 (PMID: 24651618). Her clinical interests include IgG4-related disease, vasculitis, rheumatoid arthritis and systemic lupus erythematosus.


Dr. Carruthers is part of an interdisciplinary team researching IgG4-related disease at University of British Columbia. Her collaborators include Dr. Luke Chen (UBC Hematology Program Director), Dr. Andre Mattman (UBC Associate Professor of Medial Biochemistry), Dr. Michael Seidman (UBC Assistant Professor of Pathology) and Dr. Graham Slack (UBC Assistant Professor of Pathology). Our group led by Dr. Andre Mattman discovered a new way to test for serum IgG4 (PMID: 29352044) and are working on further defining the biomarker. Hematologic manifestations of IgG4-related disease are being further explored (PMID: 28005278) as well as therapeutics.




Van der Gugten G, DeMarco ML, Chen LYC, Chin A, Caruthers M, Holmes DT, Mattman A.Resolution of Spurious Immunonephelometric IgG Subclass Measurement Discrepancies by LC-MS/MS. Clin Chem. 2018 Jan 19.


Qi R, Chen LYC, Park S, Irvine R, Seidman MA, Kelsall JT, Collins D, Yin V, Slack GW, Mattman A, Lam E, Carruthers MN. Utility of serum IgG4 levels in a multiethnic population. Am J Med Sci. 2018 Jan;355(1):61-66.


Carruthers MN, Park S, Slack GW, Dalal BI, Skinnider BF, Schaeffer DF, Dutz JP, Law JK, Donnellan F, Marquez V, Seidman M, Wong PC, Mattman A, Chen LY. IgG4-related disease and lymphocyte-variant hypereosinophilic syndrome: A comparative case series. Eur J Haematol. 2017 Apr;98(4):378-387.


Mann S, Seidman MA, Barbour SJ, Levin A, Carruthers M, Chen LY. Recognizing IgG4-related tubulointerstitial nephritis. Can J Kidney Health Dis. 2016 Jul 17.


Mattoo H, Mahajan VS, Maehara T, Deshpande V, Della-Torre E, Wallace ZS, Kulikova M, Drijvers JM, Daccache J, Carruthers MN, Castellino F, Stone JR, Stone JH, Pillai S. Clonal expansion of CD4+ cytotoxic T lymphocytes in patients with IgG4-related disease. J Allergy Clin Immunol. 2016 Mar 10.


Khosroshahi A, Wallace ZS, Crowe JL, Akamizu T, Azumi A, Carruthers MN, Chari ST, Della-Torre E, Frulloni L, Goto H, Hart PA, Kamisawa T, Kawa S, Kawano M, Kim MH, Kodama Y, Kubota K, Lerch MM, Löhr M, Masaki Y, Matsui S, Mimori T, Nakamura S, Nakazawa T, Ohara H, Okazaki K, Ryu JH, Saeki T, Schleinitz N, Shimatsu A, Shimosegawa T, Takahashi H, Takahira M, Tanaka A, Topazian M, Umehara H, Webster GJ, Witzig TE, Yamamoto M, Zhang W, Chiba T, Stone JH; Second International Symposium on IgG4-Related Disease.International Consensus Guidance Statement on the Management and Treatment of IgG4-Related Disease. Arthritis Rheumatol. 2015 Jul;67(7):1688-99.


Carruthers MN, Topazian M, Khosroshahi A, Witzig TE, Wallace ZS, Hart P, Deshpande V, Smyrk TC, Chari S and Stone JH. Rituximab for IgG4-Related Disease: A Prospective, Open-Label Trial. Ann Rheum Dis. 2015 Jun;74(6):1171-7.


Carruthers MN, Khosroshahi A, Augustin T, Deshpande V, Stone JH. The diagnostic utility of serum IgG4 concentrations in IgG4-related disease. Ann Rheum Dis. 2015 Jan;74(1):14-8.


Wallace ZS, Mattoo H, Carruthers M, Mahajan VS, Della Torre E, Lee H, Kulikova M, Deshpande V, Pillai S, Stone JH. Plasmablasts as a biomarker for IgG4-related disease, independent of serum IgG4 concentrations. Ann Rheum Dis. 2015;74:190-5.


Carruthers R, Carruthers M, Della-Torre E. IgG4-related disease and other causes of inflammatory meningeal disease. Semin Neurol. 2014 Sep;34(4):395-404. doi: 10.1055/s-0034-1390388. Epub 2014 Nov 4.


Della-Torre E, Feeney E, Deshpande V, Mattoo H, Mahajan V, Kulikova M, Wallace ZS, Carruthers M, Chung RT, Pillai S, Stone JH. B-cell depletion attenuates serological biomarkers of fibrosis and myofibroblast activation in IgG4-related disease. Ann Rheum Dis. 2014 Aug 20.


Mattoo H, Mahajan VS, Della-Torre E, Sekigami Y, Carruthers M, Wallace ZS, Deshpande V, Stone JH, Pillai S. De novo oligoclonal expansions of circulating plasmablasts in active and relapsing IgG(4)-related disease. J Allergy Clin Immunol. 2014 Sep;134(3):679-87.


Della Torre E, Mattoo H, Mahajan VS, Carruthers M, Pillai S, Stone JH. Prevalence of atopy, eosinophilia, and IgE elevation in IgG4-related disease. Allergy. 2014 Feb;69(2):269-72


Khosroshahi A, Cheryk LA, Carruthers MN, Edwards JA, Bloch DB, Stone JH. Brief Report: spuriously low serum IgG4 concentrations caused by the prozone phenomenon in patients with IgG4-related disease. Arthritis Rheumatol. 2014 Jan;66(1):213-7.


Wallace ZS, Carruthers MN, Khosroshahi A, Carruthers R, Shinagare S, Stemmer-Rachamimov A, Deshpande V, Stone JH. IgG4-related disease and hypertrophic pachymeningitis. Medicine (Baltimore). 2013 Jul;92(4):206-16


Khosroshahi A*, Carruthers MN*, Stone JH, Shinagare S, Sainani N, Hasserjian RP,Deshpande V. Rethinking Ormond’s disease: “idiopathic” retroperitoneal fibrosis in the era of IgG4-related disease. Medicine (Baltimore). 2013 Mar;92(2):82-91. Co-first author


Stone JH, Khosroshahi A, Deshpande V, Chan JK, Heathcote JG, Aalberse R, Azumi A, Bloch DB, Brugge WR, Carruthers MN, Cheuk W, Cornell L, Castillo CF, Ferry JA, Forcione D, Klöppel G, Hamilos DL, Kamisawa T, Kasashima S, Kawa S, Kawano M, Masaki Y, Notohara K, Okazaki K, Ryu JK, Saeki T, Sahani D, Sato Y, Smyrk T, Stone JR, Takahira M, Umehara H, Webster G, Yamamoto M, Yi E, Yoshino T, Zamboni G, Zen Y, Chari S. Recommendations for the nomenclature of IgG4-related disease and its individual organ system manifestations. Arthritis Rheum. 2012. Oct;64(10):3061-7.


Carruthers MN, Stone JH, Deshpande V, Khosroshahi A. Development of an IgG4-RD Responder Index. Int J Rheumatol. 2012;2012:259408.


Deshpande V, Zen Y, Chan JK, Yi EE, Sato Y, Yoshino T, Klöppel G, Heathcote JG, Khosroshahi A, Ferry JA, Aalberse RC, Bloch DB, Brugge WR, Bateman AC, Carruthers MN, Chari ST, Cheuk W, Cornell LD, Fernandez-Del Castillo C, Forcione DG, Hamilos DL, Kamisawa T, Kasashima S, Kawa S, Kawano M, Lauwers GY, Masaki Y, Nakanuma Y, Notohara K, Okazaki K, Ryu JK, Saeki T, Sahani DV, Smyrk TC, Stone JR, Takahira M, Webster GJ, Yamamoto M, Zamboni G, Umehara H, Stone JH. Consensus statement on the pathology of IgG4-related disease. Mod Pathol. 2012 Sep;25(9):1181-92.


Khosroshahi A, Carruthers MN, Deshpande V, Unizony S, Bloch DB, Stone JH. Rituximab for the treatment of IgG4-related disease: lessons from 10 consecutive patients. Medicine (Baltimore). 2012 Jan;91(1):57-66.


Khosroshahi A, Carruthers MD, Deshpande V, Leb L, Reed JI, Stone JH. Cutaneous immunoglobulin G4-related systemic disease. Am J Med. 2011 Oct;124(10):e7-8.


Dahlgren M, Khosroshahi A, Nielsen GP, Deshpande V, Stone JH. Riedel’sthyroiditis and multifocal fibrosclerosis are part of the IgG4-related systemicdisease spectrum. Arthritis Care Res (Hoboken). 2010 Sep;62(9):1312-8.


Intondi AL, Dahlgren MN, Eilers MA, Taylor BK. Intrathecal neuropeptide Y reduces behavioral and molecular markers of inflammatory or neuropathic pain. Pain 2008;137(2):352-65.


ACR News Feb 2015. Editor’s choice ARD Jan 2015; NEJM watch.




Approach to Joint Pain. White Book MGH House Staff Manual 2011-2012.






Carruthers R, Carruthers M, Della-Torre E. IgG4-related disease and other causes of inflammatory meningeal disease. Semin Neurol. 2014 Sep;34(4):395-404.


Carruthers MN, Stone JH, Khosroshahi A. The latest on IgG4-RD: a rapidly emerging disease. Curr Opin Rheumatol. 2012 Jan;24(1):60-9.




Wade SD, Seidman MA, Jones EC, Radu A, Deshpande V, Stone JH, Carruthers MN. Rational and Use of Anti-Il-6 in Erdheim-Chester Disease. The Rheumatologist February 2017.


Jabara B, Dahlgren M, McGrath H Jr. Interstitial lung disease and pulmonaryhypertension responsive to low-dose ultraviolet A1 irradiation in lupus. J ClinRheumatol. 2010 Jun;16(4):188-9.


Dahlgren M, Khosroshahi A, Stone JH. A 22-year-old woman with severeheadaches, vomiting, and tonic-clonic seizures. Arthritis Care Res (Hoboken).2011 Jan;63(1):165-71.


Dahlgren M, Smetherman DH, Wang J, Corsetti RL. Rosai-Dorfman disease of thebreast and parotid gland. J La State Med Soc. 2008 Jan-Feb;160(1):35-8.




Stone JH, Carruthers MN, Topazian MD, Khosroshahi A, Witzig TE, Wallace ZS, Hart PA, Deshpande V, Smyrk TC, Chari S. Response to: ‘Is rituximab effective for IgG4-related disease in the long term? Experience of cases treated with rituximab for 4 years’ by Yamamoto et al.Ann Rheum Dis. 2015 Aug;74(8):e47


Carruthers MN, Miloslavsky EM, Stone JH. Reply: To PMID 22736240. Arthritis Rheum. 2013 Aug;65(8):2217-8.




Carruthers MN, New England Journal of Medicine (NEJM) Knowledge Plus. Authored 5 questions in Rheumatology for comprehensive lifelong learning product from NEJM Group 2014.


Dahlgren, M. Psoriasis. Partners Health Care Primary Care Office Insite entry.