Pediatric Rheumatology Research Group Publications

  1. Holten K, Paulshus Sundlisæter N, Sexton J, Nordberg LB, Uhlig T, Kvien TK, Solomon DH, Haavardsholm EA, Lillegraven S, Aga AB, ARCTIC REWIND study group (2024)
    Performance of the Rheumatoid Arthritis Impact of Disease (RAID) score in relation to flares in disease activity
    RMD Open, 10 (1)
    DOI 10.1136/rmdopen-2023-003486, PubMed 38216290
  2. Melokhina V, Paulshus Sundlisæter N, Sexton J, Sundin U, Aga AB, Kjørholt KE, Nordberg LB, van der Heijde D, Haavardsholm E, Lillegraven S (2023)
    Subclinical inflammation and joint damage progression in patients with early RA fulfilling 2011 vs 2022 ACR/EULAR Boolean remission criteria: data from the ARCTIC study
    Ann Rheum Dis (in press)
    DOI 10.1136/ard-2023-224950, PubMed 38049997
  3. Moe SR, Haukeland H, Brunborg C, Botea A, Damjanic N, Wivestad GÅ, Øvreås H, Bøe T, Orre A, Garen T, Lilleby V, Provan SA, Molberg Ø, Lerang K (2023)
    Persisting mortality gap in systemic lupus erythematosus; a population-based study on juvenile- and adult-onset SLE in Norway 1999-2022
    Rheumatology (Oxford) (in press)
    DOI 10.1093/rheumatology/kead519, PubMed 37769251
  4. Lillegraven S, Paulshus Sundlisæter N, Aga AB, Sexton J, Olsen IC, Lexberg ÅS, Madland TM, Fremstad H, Høili CA, Bakland G, Spada C, Haukeland H, Hansen IM, Moholt E, Uhlig T, Solomon DH, van der Heijde D, Kvien TK, Haavardsholm EA (2023)
    Effect of tapered versus stable treatment with tumour necrosis factor inhibitors on disease flares in patients with rheumatoid arthritis in remission: a randomised, open label, non-inferiority trial
    Ann Rheum Dis, 82 (11), 1394-1403
    DOI 10.1136/ard-2023-224476, PubMed 37607809
  5. Østergaard M, van Vollenhoven RF, Rudin A, Hetland ML, Heiberg MS, Nordström DC, Nurmohamed MT, Gudbjornsson B, Ørnbjerg LM, Bøyesen P, Lend K, Hørslev-Petersen K, Uhlig T, Sokka T, Grondal G, Krabbe S, Lindqvist J, Gjertsson I, Glinatsi D, Kapetanovic MC, Aga AB, Faustini F, Parmanne P, Lorenzen T, Giovanni C et al. (2023)
    Certolizumab pegol, abatacept, tocilizumab or active conventional treatment in early rheumatoid arthritis: 48-week clinical and radiographic results of the investigator-initiated randomised controlled NORD-STAR trial
    Ann Rheum Dis, 82 (10), 1286-1295
    DOI 10.1136/ard-2023-224116, PubMed 37423647
  6. Lillegraven S, Paulshus Sundlisæter N, Aga AB, Sexton J, Solomon DH, van der Heijde D, Haavardsholm EA (2023)
    Discontinuation of Conventional Synthetic Disease-Modifying Antirheumatic Drugs in Patients With Rheumatoid Arthritis and Excellent Disease Control
    JAMA, 329 (12), 1024-1026
    DOI 10.1001/jama.2023.0492, PubMed 36976288
  7. Sande NK, Lilleby V, Aga AB, Kirkhus E, Flatø B, Bøyesen P (2023)
    Associations between power Doppler ultrasound findings and B-mode synovitis and clinical arthritis in juvenile idiopathic arthritis using a standardised scanning approach and scoring system
    RMD Open, 9 (1)
    DOI 10.1136/rmdopen-2022-002937, PubMed 36963783
  8. Berger SG, Witczak BN, Reiseter S, Schwartz T, Andersson H, Hetlevik SO, Berntsen KS, Sanner H, Lilleby V, Gunnarsson R, Molberg Ø, Sjaastad I, Stokke MK (2023)
    Cardiac dysfunction in mixed connective tissue disease: a nationwide observational study
    Rheumatol Int, 43 (6), 1055-1065
    DOI 10.1007/s00296-023-05308-3, PubMed 36933069
  9. Kim H, Saygin D, Douglas C, Wilkerson J, Erman B, Pistorio A, McGrath JA, Reed AM, Oddis CV, Bracaglia C, van Royen-Kerkhof A, Bica B, Dolezalova P, Ferriani VPL, Flato B, Bernard-Medina AG, Herlin T, Miller FW, Vencovsky J, Ruperto N, Aggarwal R, Rider LG, International Myositis Assessment and Clinical Studies Group (IMACS) and Paediatric Rheumatology INternational Trials Organization (PRINTO) (2023)
    Performance of the 2016 ACR-EULAR myositis response criteria in juvenile dermatomyositis therapeutic trials and consensus profiles
    Rheumatology (Oxford), 62 (11), 3680-3689
    DOI 10.1093/rheumatology/kead111, PubMed 36929918
  10. Marstein HS, Witczak BN, Godang K, Olarescu NC, Schwartz T, Flatø B, Molberg Ø, Bollerslev J, Sjaastad I, Sanner H (2023)
    Adipokine profile in long-term juvenile dermatomyositis, and associations with adipose tissue distribution and cardiac function: a cross-sectional study
    RMD Open, 9 (1)
    DOI 10.1136/rmdopen-2022-002815, PubMed 36828644
  11. Bardan I, Fagerli KM, Sexton J, Kvien TK, Bakland G, Mielnik P, Hu Y, Lien G, Flatø B, Molberg Ø, Kristianslund EK, Aga AB (2022)
    Treatment Response to Tumor Necrosis Factor Inhibitors and Methotrexate Monotherapy in Adults With Juvenile Idiopathic Arthritis: Data From NOR-DMARD
    J Rheumatol, 50 (4), 538-547
    DOI 10.3899/jrheum.220645, PubMed 36379571
  12. Podewski AF, Glimm AM, Fischer I, Bruyn GAW, Hanova P, Hammer HB, Aga AB, Haavardsholm EA, Ramiro S, Burmester GR, Backhaus M, Ohrndorf S (2022)
    The MCP2 and the wrist plus two extensor compartments are the most affected and responsive joints/tendons out of the US7 score in patients with rheumatoid arthritis-an observational study
    Arthritis Res Ther, 24 (1), 183
    DOI 10.1186/s13075-022-02874-y, PubMed 35932087
  13. von Brandis E, Zadig PK, Avenarius DFM, Flatø B, Kristian Knudsen P, Lilleby V, Nguyen B, Rosendahl K, Ording Müller LS (2022)
    Whole body magnetic resonance imaging in healthy children and adolescents. Bone marrow appearances of the axial skeleton
    Eur J Radiol, 154, 110425
    DOI 10.1016/j.ejrad.2022.110425, PubMed 35843014
  14. Zadig PK, von Brandis E, Flatø B, Ording Müller LS, Nordal EB, de Horatio LT, Rosendahl K, Avenarius DFM (2022)
    Whole body magnetic resonance imaging in healthy children and adolescents: Bone marrow appearances of the appendicular skeleton
    Eur J Radiol, 153, 110365
    DOI 10.1016/j.ejrad.2022.110365, PubMed 35617871
  15. Marstein HS, Witczak BN, Godang K, Schwartz T, Flatø B, Bollerslev J, Sjaastad I, Sanner H (2023)
    Adipose tissue distribution is associated with cardio-metabolic alterations in adult patients with juvenile-onset dermatomyositis
    Rheumatology (Oxford), 62 (SI2), SI196-SI204
    DOI 10.1093/rheumatology/keac293, PubMed 35575380
  16. Tollisen A, Selvaag AM, Aasland A, Ingebrigtsen T, Sagen J, Lerdal A, Flatø B (2022)
    Personally Generated Quality of Life Outcomes in Adults With Juvenile Idiopathic Arthritis
    J Rheumatol, 49 (10), 1138-1145
    DOI 10.3899/jrheum.211245, PubMed 35569834
  17. Li J, Li YR, Glessner JT, Yang J, March ME, Kao C, Vaccaro CN, Bradfield JP, Li J, Mentch FD, Qu HQ, Qi X, Chang X, Hou C, Abrams DJ, Qiu H, Wei Z, Connolly JJ, Wang F, Snyder J, Flatø B, Thompson SD, Langefeld CD, Lie BA, Munro JE et al. (2022)
    Identification of Novel Loci Shared by Juvenile Idiopathic Arthritis Subtypes Through Integrative Genetic Analysis
    Arthritis Rheumatol, 74 (8), 1420-1429
    DOI 10.1002/art.42129, PubMed 35347896
  18. von Brandis E, Jenssen HB, Avenarius DFM, Bjørnerud A, Flatø B, Tomterstad AH, Lilleby V, Rosendahl K, Sakinis T, Zadig PKK, Müller LO (2022)
    Correction to: Automated segmentation of magnetic resonance bone marrow signal: a feasibility study
    Pediatr Radiol, 52 (6), 1196
    DOI 10.1007/s00247-022-05315-9, PubMed 35192023
  19. von Brandis E, Jenssen HB, Avenarius DFM, Bjørnerud A, Flatø B, Tomterstad AH, Lilleby V, Rosendahl K, Sakinis T, Zadig PKK, Müller LO (2022)
    Automated segmentation of magnetic resonance bone marrow signal: a feasibility study
    Pediatr Radiol, 52 (6), 1104-1114
    DOI 10.1007/s00247-021-05270-x, PubMed 35107593
  20. Paulshus Sundlisæter N, Sundin U, Aga AB, Sexton J, Hammer HB, Uhlig T, Kvien TK, Haavardsholm EA, Lillegraven S (2022)
    Inflammation and biologic therapy in patients with rheumatoid arthritis achieving versus not achieving ACR/EULAR Boolean remission in a treat-to-target study
    RMD Open, 8 (1)
    DOI 10.1136/rmdopen-2021-002013, PubMed 35091463
  21. Witczak BN, Schwartz T, Barth Z, Taraldsrud E, Lund MB, Aaløkken TM, Flatø B, Sjaastad I, Sanner H (2022)
    Associations between cardiac and pulmonary involvement in patients with juvenile dermatomyositis-a cross-sectional study
    Rheumatol Int, 42 (7), 1213-1220
    DOI 10.1007/s00296-021-05071-3, PubMed 34984516
  22. Witczak BN, Bollerslev J, Godang K, Schwartz T, Flatø B, Molberg Ø, Sjaastad I, Sanner H (2022)
    Body composition in long-standing juvenile dermatomyositis: associations with disease activity, muscle strength and cardiometabolic measures
    Rheumatology (Oxford), 61 (7), 2959-2968
    DOI 10.1093/rheumatology/keab805, PubMed 34718443
  23. Hu Y, Rojahn AE, Flatø B (2021)
    [Multisystem inflammatory syndrome in children and adolescents after infection with SARS-CoV-2]
    Tidsskr Nor Laegeforen, 141 (2021-14)
    DOI 10.4045/tidsskr.20.1040, PubMed 34641663
  24. Holten K, Paulshus Sundlisater N, Lillegraven S, Sexton J, Nordberg LB, Moholt E, Hammer HB, Uhlig T, Kvien TK, Haavardsholm EA, Aga AB (2021)
    Fatigue in patients with early rheumatoid arthritis undergoing treat-to-target therapy: predictors and response to treatment
    Ann Rheum Dis, 81 (3), 344-350
    DOI 10.1136/annrheumdis-2021-220750, PubMed 34389605
  25. Paulshus Sundlisater N, Aga AB, Olsen IC, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA, Lillegraven S (2021)
    Joint tenderness and ultrasound inflammation in DMARD-naïve patients with early rheumatoid arthritis
    Ann Rheum Dis, 80 (11), 1493-1494
    DOI 10.1136/annrheumdis-2021-220265, PubMed 34083205
  26. Lillegraven S, Paulshus Sundlisæter N, Aga AB, Sexton J, Olsen IC, Fremstad H, Spada C, Madland TM, Høili CA, Bakland G, Lexberg Å, Hansen IJW, Hansen IM, Haukeland H, Ljoså MA, Moholt E, Uhlig T, Solomon DH, van der Heijde D, Kvien TK, Haavardsholm EA (2021)
    Effect of Half-Dose vs Stable-Dose Conventional Synthetic Disease-Modifying Antirheumatic Drugs on Disease Flares in Patients With Rheumatoid Arthritis in Remission: The ARCTIC REWIND Randomized Clinical Trial
    JAMA, 325 (17), 1755-1764
    DOI 10.1001/jama.2021.4542, PubMed 33944875
  27. Marstein HS, Godang K, Flatø B, Sjaastad I, Bollerslev J, Sanner H (2021)
    Bone mineral density and explanatory factors in children and adults with juvenile dermatomyositis at long term follow-up; a cross sectional study
    Pediatr Rheumatol Online J, 19 (1), 56
    DOI 10.1186/s12969-021-00543-z, PubMed 33902632
  28. Heinicke F, Zhong X, Flåm ST, Breidenbach J, Leithaug M, Mæhlen MT, Lillegraven S, Aga AB, Norli ES, Mjaavatten MD, Haavardsholm EA, Zucknick M, Rayner S, Lie BA (2021)
    MicroRNA Expression Differences in Blood-Derived CD19+ B Cells of Methotrexate Treated Rheumatoid Arthritis Patients
    Front Immunol, 12, 663736
    DOI 10.3389/fimmu.2021.663736, PubMed 33897713
  29. Felbo SK, Wiell C, Østergaard M, Poggenborg RP, Bøyesen P, Hammer HB, Boonen A, Pedersen SJ, Sørensen IJ, Madsen OR, Slot O, Møller JM, Szkudlarek M, Terslev L (2022)
    Do tender joints in active psoriatic arthritis reflect inflammation assessed by ultrasound and magnetic resonance imaging?
    Rheumatology (Oxford), 61 (2), 723-733
    DOI 10.1093/rheumatology/keab384, PubMed 33895799
  30. Sande NK, Bøyesen P, Aga AB, Hammer HB, Flatø B, Roth J, Lilleby V (2021)
    Development and reliability of a novel ultrasonographic joint-specific scoring system for synovitis with reference atlas for patients with juvenile idiopathic arthritis
    RMD Open, 7 (2)
    DOI 10.1136/rmdopen-2021-001581, PubMed 33883255
  31. Sundin U, Sundlisater NP, Aga AB, Sexton J, Nordberg LB, Hammer HB, van der Heijde D, Kvien TK, Haavardsholm EA, Lillegraven S, the ARCTIC Study Group (2021)
    Value of MRI and ultrasound for prediction of therapeutic response and erosive progression in patients with early rheumatoid arthritis managed by an aggressive treat-to-target strategy
    RMD Open, 7 (1)
    DOI 10.1136/rmdopen-2020-001525, PubMed 33547228
  32. Frid P, Baraniya D, Halbig J, Rypdal V, Songstad NT, Rosèn A, Berstad JR, Flatø B, Alakwaa F, Gil EG, Cetrelli L, Chen T, Al-Hebshi NN, Nordal E, Al-Haroni M (2020)
    Salivary Oral Microbiome of Children With Juvenile Idiopathic Arthritis: A Norwegian Cross-Sectional Study
    Front Cell Infect Microbiol, 10, 602239
    DOI 10.3389/fcimb.2020.602239, PubMed 33251163
  33. Frid P, Augdal TA, Larheim TA, Halbig J, Rypdal V, Songstad NT, Rosén A, Tylleskär KB, Berstad JR, Flatø B, Stoustrup P, Rosendahl K, Kirkhus E, Nordal E (2020)
    Efficacy and safety of intraarticular corticosteroid injections in adolescents with juvenile idiopathic arthritis in the temporomandibular joint: a Norwegian 2-year prospective multicenter pilot study
    Pediatr Rheumatol Online J, 18 (1), 75
    DOI 10.1186/s12969-020-00464-3, PubMed 32998740
  34. Malattia C, Ruperto N, Pederzoli S, Palmisani E, Pistorio A, Wouters C, Dolezalova P, Flato B, Garay S, Giancane G, Wells C, Douglass W, Brunner HI, De Benedetti F, Ravelli A, Paediatric Rheumatology International Trials Organisation (PRINTO) and the Pediatric Rheumatology Collaborative Study Group (PRCSG) (2020)
    Tocilizumab may slow radiographic progression in patients with systemic or polyarticular-course juvenile idiopathic arthritis: post hoc radiographic analysis from two randomized controlled trials
    Arthritis Res Ther, 22 (1), 211
    DOI 10.1186/s13075-020-02303-y, PubMed 32912276
  35. Guderud K, Sunde LH, Flåm ST, Mæhlen MT, Mjaavatten MD, Lillegraven S, Aga AB, Evenrød IM, Norli ES, Andreassen BK, Franzenburg S, Franke A, Haavardsholm EA, Rayner S, Gervin K, Lie BA (2020)
    Rheumatoid Arthritis Patients, Both Newly Diagnosed and Methotrexate Treated, Show More DNA Methylation Differences in CD4+ Memory Than in CD4+ Naïve T Cells
    Front Immunol, 11, 194
    DOI 10.3389/fimmu.2020.00194, PubMed 32117312
  36. Norvang V, Brinkmann GH, Yoshida K, Lillegraven S, Aga AB, Sexton J, Tedeschi SK, Lyu H, Norli ES, Uhlig T, Kvien TK, Mjaavatten MD, Solomon DH, Haavardsholm EA, ARCTIC study group, NOR-VEAC study group (2020)
    Achievement of remission in two early rheumatoid arthritis cohorts implementing different treat-to-target strategies
    Arthritis Rheumatol, 72 (7), 1072-1081
    DOI 10.1002/art.41232, PubMed 32090491
  37. Sundin U, Aga AB, Skare Ø, Nordberg LB, Uhlig T, Hammer HB, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2020)
    Conventional versus ultrasound treat to target: no difference in magnetic resonance imaging inflammation or joint damage over 2 years in early rheumatoid arthritis
    Rheumatology (Oxford), 59 (9), 2550-2555
    DOI 10.1093/rheumatology/kez674, PubMed 31999341
  38. de Jesus AA, Hou Y, Brooks S, Malle L, Biancotto A, Huang Y, Calvo KR, Marrero B, Moir S, Oler AJ, Deng Z, Montealegre Sanchez GA, Ahmed A, Allenspach E, Arabshahi B, Behrens E, Benseler S, Bezrodnik L, Bout-Tabaku S, Brescia AC, Brown D, Burnham JM, Caldirola MS, Carrasco R, Chan AY et al. (2020)
    Distinct interferon signatures and cytokine patterns define additional systemic autoinflammatory diseases
    J Clin Invest, 130 (4), 1669-1682
    DOI 10.1172/JCI129301, PubMed 31874111
  39. Skjelland M, Zamani M, Hetlevik S, Lilleby V, Halvorsen B, Skagen K (2019)
    Increased Endothelial Activation in Patients with Mixed Connective Tissue Disease
    J Stroke Cerebrovasc Dis, 29 (2), 104563
    DOI 10.1016/j.jstrokecerebrovasdis.2019.104563, PubMed 31831329
  40. Tollisen A, Flatø B, Selvaag AM, Aasland A, Ingebrigtsen T, Sagen J, Lerdal A (2021)
    Treatment Satisfaction With and Adherence to Disease-Modifying Antirheumatic Drugs in Adult Patients With Juvenile Idiopathic Arthritis
    Arthritis Care Res (Hoboken), 73 (2), 221-231
    DOI 10.1002/acr.24113, PubMed 31758669
  41. Berntsen KS, Raastad T, Marstein H, Kirkhus E, Merckoll E, Cumming KT, Flatø B, Sjaastad I, Sanner H (2020)
    Functional and Structural Adaptations of Skeletal Muscle in Long-Term Juvenile Dermatomyositis: A Controlled Cross-Sectional Study
    Arthritis Rheumatol, 72 (5), 837-848
    DOI 10.1002/art.41174, PubMed 31746550
  42. Marstein H, Schwartz T, Aaløkken TM, Lund MB, Flatø B, Sjaastad I, Sanner H (2020)
    Novel associations between cytokines and pulmonary involvement in juvenile dermatomyositis - a cross-sectional study of long-term disease
    Rheumatology (Oxford), 59 (8), 1862-1870
    DOI 10.1093/rheumatology/kez531, PubMed 31740970
  43. Jonsson MK, Kantyka T, Falkowski K, Aliko A, Aga AB, Lillegraven S, Sexton J, Fevang BT, Mydel P, Haavardsholm EA (2019)
    Peptidylarginine deiminase 4 (PAD4) activity in early rheumatoid arthritis
    Scand J Rheumatol, 49 (2), 87-95
    DOI 10.1080/03009742.2019.1641216, PubMed 31544586
  44. Terslev L, Christensen R, Aga AB, Sexton J, Haavardsholm EA, Hammer HB (2019)
    Assessing synovitis in the hands in patients with rheumatoid arthritis by ultrasound: an agreement study exploring the most inflammatory active side from two Norwegian trials
    Arthritis Res Ther, 21 (1), 166
    DOI 10.1186/s13075-019-1930-y, PubMed 31277679
  45. Witczak BN, Hetlevik SO, Sanner H, Barth Z, Schwartz T, Flatø B, Lilleby V, Sjaastad I (2019)
    Effect on Cardiac Function of Longstanding Juvenile-onset Mixed Connective Tissue Disease: A Controlled Study
    J Rheumatol, 46 (7), 739-747
    DOI 10.3899/jrheum.180526, PubMed 30877222
  46. Tollisen A, Selvaag AM, Aasland A, Lerdal A, Flatø B (2019)
    Longitudinal Health Status from Early Disease to Adulthood and Associated Prognostic Factors in Juvenile Idiopathic Arthritis
    J Rheumatol, 46 (10), 1335-1344
    DOI 10.3899/jrheum.180948, PubMed 30877211
  47. Consolaro A, Giancane G, Alongi A, van Dijkhuizen EHP, Aggarwal A, Al-Mayouf SM, Bovis F, De Inocencio J, Demirkaya E, Flato B, Foell D, Garay SM, Lazăr C, Lovell DJ, Montobbio C, Miettunen P, Mihaylova D, Nielsen S, Orban I, Rumba-Rozenfelde I, Magalhães CS, Shafaie N, Susic G, Trachana M, Wulffraat N et al. (2019)
    Phenotypic variability and disparities in treatment and outcomes of childhood arthritis throughout the world: an observational cohort study
    Lancet Child Adolesc Health, 3 (4), 255-263
    DOI 10.1016/S2352-4642(19)30027-6, PubMed 30819662
  48. Skagen K, Hetlevik SO, Zamani M, Lilleby V, Skjelland M (2019)
    Preclinical Carotid Atherosclerosis in Patients With Juvenile-Onset Mixed Connective Tissue Disease
    J Stroke Cerebrovasc Dis, 28 (5), 1295-1301
    DOI 10.1016/j.jstrokecerebrovasdis.2019.01.027, PubMed 30772156
  49. Sundin U, Østergaard M, Glinatsi D, Aga AB, Hørslev-Petersen K, Hetland ML, Stengard-Pedersen K, Junker P, Ejbjerg BJ, Bird P, Conaghan PG, Lillegraven S, Haavardsholm EA (2019)
    Validity and Responsiveness of Combined Inflammation and Combined Joint Damage Scores Based on the OMERACT Rheumatoid Arthritis MRI Scoring System (RAMRIS)
    J Rheumatol, 46 (9), 1222-1227
    DOI 10.3899/jrheum.181064, PubMed 30770509
  50. Hammenfors DS, Valim V, Bica BERG, Pasoto SG, Lilleby V, Nieto-González JC, Silva CA, Mossel E, Pereira RMR, Coelho A, Bootsma H, Thatayatikom A, Brun JG, Jonsson MV (2019)
    Juvenile Sjögren's Syndrome: Clinical Characteristics With Focus on Salivary Gland Ultrasonography
    Arthritis Care Res (Hoboken), 72 (1), 78-87
    DOI 10.1002/acr.23839, PubMed 30697959
  51. Aulie HA, Estensen ME, Selvaag AM, Lilleby V, Flatø B, Aakhus S (2018)
    Arterial properties in adults with long-lasting active juvenile idiopathic arthritis compared to healthy controls
    Pediatr Rheumatol Online J, 16 (1), 85
    DOI 10.1186/s12969-018-0302-5, PubMed 30594204
  52. Nordberg LB, Lillegraven S, Aga AB, Sexton J, Olsen IC, Lie E, Berner Hammer H, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA (2018)
    Comparing the disease course of patients with seronegative and seropositive rheumatoid arthritis fulfilling the 2010 ACR/EULAR classification criteria in a treat-to-target setting: 2-year data from the ARCTIC trial
    RMD Open, 4 (2), e000752
    DOI 10.1136/rmdopen-2018-000752, PubMed 30564452
  53. Berntsen KS, Edvardsen E, Hansen BH, Flatø B, Sjaastad I, Sanner H (2019)
    Cardiorespiratory fitness in long-term juvenile dermatomyositis: a controlled, cross-sectional study of active/inactive disease
    Rheumatology (Oxford), 58 (3), 492-501
    DOI 10.1093/rheumatology/key342, PubMed 30508195
  54. Holten K, Sexton J, Kvien TK, Aga AB, Haavardsholm EA (2018)
    Comparative analyses of responsiveness between the Rheumatoid Arthritis Impact of Disease score, other patient-reported outcomes and disease activity measures: secondary analyses from the ARCTIC study
    RMD Open, 4 (2), e000754
    DOI 10.1136/rmdopen-2018-000754, PubMed 30487996
  55. Hetlevik SO, Flatø B, Aaløkken TM, Lund MB, Reiseter S, Mynarek GK, Nordal E, Rygg M, Lilleby V (2018)
    Pulmonary Manifestations and Progression of Lung Disease in Juvenile-onset Mixed Connective Tissue Disease
    J Rheumatol, 46 (1), 93-100
    DOI 10.3899/jrheum.180019, PubMed 30068767
  56. Paulshus Sundlisæter N, Olsen IC, Aga AB, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2018)
    Predictors of sustained remission in patients with early rheumatoid arthritis treated according to an aggressive treat-to-target protocol
    Rheumatology (Oxford), 57 (11), 2022-2031
    DOI 10.1093/rheumatology/key202, PubMed 30053199
  57. Jonsson MK, Hensvold AH, Hansson M, Aga AB, Sexton J, Mathsson-Alm L, Cornillet M, Serre G, Lillegraven S, Fevang BS, Catrina AI, Haavardsholm EA (2018)
    The role of anti-citrullinated protein antibody reactivities in an inception cohort of patients with rheumatoid arthritis receiving treat-to-target therapy
    Arthritis Res Ther, 20 (1), 146
    DOI 10.1186/s13075-018-1635-7, PubMed 30001740
  58. Barth Z, Schwartz T, Flatø B, Aaløkken TM, Koller A, Lund MB, Sjaastad I, Sanner H (2019)
    Association Between Nailfold Capillary Density and Pulmonary and Cardiac Involvement in Medium to Longstanding Juvenile Dermatomyositis
    Arthritis Care Res (Hoboken), 71 (4), 492-497
    DOI 10.1002/acr.23687, PubMed 29953739
  59. Paulshus Sundlisæter N, Aga AB, Olsen IC, Hammer HB, Uhlig T, van der Heijde D, Kvien TK, Lillegraven S, Haavardsholm EA, ARCTIC study group (2018)
    Clinical and ultrasound remission after 6 months of treat-to-target therapy in early rheumatoid arthritis: associations to future good radiographic and physical outcomes
    Ann Rheum Dis, 77 (10), 1421-1425
    DOI 10.1136/annrheumdis-2017-212830, PubMed 29934373
  60. Flato B, Rygg M, Nordal EB, Røisland M, Ødegård HB, Hoftun GB, Songstad NT, Consolaro A, Bovis F, Ruperto N, Paediatric Rheumatology International Trials Organisation (PRINTO) (2018)
    The Norwegian version of the Juvenile Arthritis Multidimensional Assessment Report (JAMAR)
    Rheumatol Int, 38 (Suppl 1), 291-298
    DOI 10.1007/s00296-018-3963-y, PubMed 29637327
  61. Nordberg LB, Lillegraven S, Aga AB, Sexton J, Lie E, Hammer HB, Olsen IC, Uhlig T, van der Heijde D, Kvien TK, Haavardsholm EA (2018)
    The Impact of Ultrasound on the Use and Efficacy of Intraarticular Glucocorticoid Injections in Early Rheumatoid Arthritis: Secondary Analyses From a Randomized Trial Examining the Benefit of Ultrasound in a Clinical Tight Control Regimen
    Arthritis Rheumatol, 70 (8), 1192-1199
    DOI 10.1002/art.40494, PubMed 29575737
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