Heikki Relas

Research output

Research output per year 2017 2022 2024 2025

• 30 Article
• 1 Meeting Abstract
• 1 Review Article

Research output per year

Research output per year

Search results

• 2025

  Disparities in the organisation of national healthcare systems for treatment of patients with psoriatic arthritis and axial spondyloarthritis across Europe

  Michelsen, B., Østergaard, M., Nissen, M. J., Ciurea, A., Möller, B., Midtbøll Ørnbjerg, L., Horák, P., Glintborg, B., MacDonald, A., Laas, K., Sokka-Isler, T., Gudbjornsson, B., Iannone, F., Hellamand, P., Kvien, T. K., Rodrigues, A. M., Codreanu, C., Rotar, Z., Castrejón, I. & Wallman, J. K. & 16 others, Pavelka, K., Loft, A. G., Heddle, M., Vorobjov, S., Relas, H., Gröndal, G., Gremese, E., van der Horst-Bruinsma, I., Kristianslund, E. K., Santos, M. J., Mogosan, C., Tomsic, M., Diaz-Gonzalez, F., Giuseppe, D. D., Nielsen, S. W. & Lund Hetland, M., Jun 2025, In: Health Policy. 156, 17 p., 105311.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Handling of missing component information for common composite score outcomes used in axial spondyloarthritis research when complete-case analysis is unbiased

  Polysopoulos, C., Georgiadis, S., Ornbjerg, L. M., Scherer, A., Di Giuseppe, D., Hetland, M. L., Nissen, M. J., Jones, G. T., Glintborg, B., Loft, A. G., Wallman, J. K., Pavelka, K., Zavada, J., Yazici, A., Santos, M. J., Ciurea, A., Moller, B., Michelsen, B., Mielnik, P. & Huhtakangas, J. & 8 others, Relas, H., Pirkmajer, K. P., Rotar, Z., Macdonald, R., Gudbjornsson, B., van der Horst-bruinsma, I., van de Sande, M. & Riek, M., 28 Feb 2025, In: BMC Medical Research Methodology. 25, 1, 16 p., 55.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access
• 2024

  Effectiveness of secukinumab in radiographic and non-radiographic axial spondyloarthritis: a European routine-care observational study

  Christiansen, S. N., Rasmussen, S. H., Ostergaard, M., Pons, M., Michelsen, B., Pavelka, K., Codreanu, C., Ciurea, A., Glintborg, B., Santos, M. J., Sari, I., Rotar, Z., Gudbjornsson, B., Macfarlane, G. J., Relas, H., Iannone, F., Laas, K., Wallman, J. K., van de Sande, M. & Provan, S. A. & 19 others, Castrejon, I., Zavada, J., Mogosan, C., Nissen, M. J., Loft, A. G., Barcelos, A., Erez, Y., Pirkmajer, K. P., Grondal, G., Jones, G. T., Hokkanen, A.-M., Chimenti, M. S., Vorobjov, S., Giuseppe, D. D., Kvien, T. K., Otero-Varela, L., van der Horst-Bruinsma, I., Hetland, M. L. & Ørnbjerg, L. M., 24 Jul 2024, In: RMD open. 10, 3, 13 p., e004166.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Enthesitis in a European registry-based cohort of patients with psoriatic arthritis treated with tumour necrosis factor inhibitors: clinical burden, patient-reported outcomes, and treatment response

  Mathew, A. J., Lund, M. L., Pedersen, M. P., Rasmussen, S. H., Glintborg, B., Loft, A. G., Nissen, M. J., Möller, B., Rodrigues, A. M., Santos, F. P., Rotar, Z., Tomšič, M., Relas, H., Peltomaa, R., Gudbjornsson, B., Löve, T. J., Kocaer, S. B., Koken Avsar, A., Midtbøll Ørnbjerg, L. & Østergaard, M., 2024, In: Scandinavian Journal of Rheumatology. 53, 4, p. 237-247 11 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Health-related quality of life and self-reported health status in adolescents with chronic health conditions before transfer of care to adult health care: an international cohort study

  Kallio, M., Tornivuori, A., Miettinen, P. J., Kolho, K.-L., Relas, H., Culnane, E., Loftus, H., Sawyer, S. M. & Kosola, S., 2024, In: BMC Pediatrics. 24, 1, 13 p., 163.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Interstitial Lung Disease in Patients With Rheumatoid Arthritis or Psoriatic Arthritis Initiating Biologics and Controls: Data From 5 Nordic Registries

  Provan, S. A., Ljung, L., Kristianslund, E. K., Michelsen, B., Uhlig, T., Jonmundsson, T., Sexton, J., Gudbjornsson, B., Di Giuseppe, D., Hetland, M. L., Reynisdottir, G. B., Glintborg, B., Relas, H., Aaltonen, K., Kvien, T. K. & Askling, J., 1 Nov 2024, In: The Journal of rheumatology. 51, 11, p. 1111-1118 8 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Patient-Reported Outcomes (PROs) and PRO Remission Rates in 12,262 Biologic-Naïve Patients With Psoriatic Arthritis Treated With Tumor Necrosis Factor Inhibitors in Routine Care

  Ørnbjerg, L. M., Rugbjerg, K., Georgiadis, S., Rasmussen, S. H., Jacobsson, L., Loft, A. G., Iannone, F., Fagerli, K. M., Vencovsky, J., Santos, M. J., Möller, B., Pombo-Suarez, M., Rotar, Z., Gudbjornsson, B., Cefle, A., Eklund, K., Codreanu, C., Jones, G., van der Sande, M. & Wallman, J. K. & 11 others, Sebastiani, M., Michelsen, B., Závada, J., Nissen, M. J., Sanchez-Piedra, C., Tomšič, M., Love, T. J., Relas, H., Mogosan, C., Hetland, M. L. & Østergaard, M., 1 Apr 2024, In: Journal of Rheumatology. 51, 4, p. 378-389 12 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• POS0022 MORTALITY FROM INTERSTITIAL LUNG DISEASE IN RHEUMATOID ARTHRITIS – A COLLABORATIVE STUDY FROM THE NORDIC COUNTRIES

  Provan, S. A., Ikdahl, E., Ljung, L., Michelsen, B., Uhlig, T., Jónmundsson, Þ., Sexton, J., Gudbjornsson, B., Di Giuseppe, D., Lund Hetland, M., Dreyer, L. L., Reynisdottir, G. B., Relas, H., Kvien, T. K. & Askling, J., 2024, In: Annals of the Rheumatic Diseases. p. 450-451 2 p.

  Research output: Contribution to journal › Meeting Abstract › peer-review

• Sex Differences in the Effectiveness of First-Line Tumor Necrosis Factor Inhibitors in Psoriatic Arthritis: Results From the European Spondyloarthritis Research Collaboration Network

  Hellamand, P., van de Sande, M. G. H., Ørnbjerg, L. M., Klausch, T., Eklund, K. K., Relas, H., Santos, M. J., Vieira-Sousa, E., Loft, A. G., Glintborg, B., Østergaard, M., Lindström, U., Wallman, J. K., Michelsen, B., Fagerli, K. M., Castrejón, I., Gudbjornsson, B., Love, T. J., Vencovský, J. & Nekvindová, L. & 13 others, Rotar, Ž., Tomšič, M., Díaz-González, F., Kenar, G., Tuğsal, H. Y., Iannone, F., Ramonda, R., Codreanu, C., Mogosan, C., Nissen, M. J., Möller, B., Hetland, M. L. & van der Horst-Bruinsma, I. E., 2024, In: Arthritis and Rheumatology. 76, 4, p. 587-598 12 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2023

  Exposure to specific tumour necrosis factor inhibitors and risk of demyelinating and inflammatory neuropathy in cohorts of patients with inflammatory arthritis: a collaborative observational study across five Nordic rheumatology registers

  Delcoigne, B., Kopp, T. I., Arkema, E., Hellgren, K., Provan, S. A., Relas, H., Aaltonen, K., Trokovic, N., Gudbjornsson, B., Grondal, G., Klami Kristianslund, E., Lindhardsen, J., Dreyer, L. & Askling, J., Feb 2023, In: RMD open. 9, 1, 12 p., e002924.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Impact of TNF inhibitor medication on working ability in axial spondyloarthritis: an observational national registry-based cohort study

  Hokkanen, A.-M., Aaltonen, K., Relas, H., Rutanen, J., Kononoff, A., Taimen, K., Kauppi, M., Puolakka, K., Trokovic, N. & Nordström, D., 12 Apr 2023, In: Rheumatology Advances in Practice. 7, 2, 8 p., rkad050.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• One-Third of European Patients With Axial Spondyloarthritis Reach Pain Remission With Routine Care Tumor Necrosis Factor Inhibitor Treatment

  Ornbjerg, L. M., Rugbjerg, K., Georgiadis, S., Rasmussen, S. H., Lindstrom, U., Pavelka, K., Yilmaz, N., Favalli, E. G., Nissen, M. J., Michelsen, B., Vieira-Sousa, E., Jones, G. T., Ionescu, R., Relas, H., Sanchez-Piedra, C., Tomsic, M., Geirsson, A. J., van der Horst-Bruinsma, I., Askling, J. & Loft, A. G. & 15 others, Nekvindova, L., Direskeneli, H., Iannone, F., Ciurea, A., Fagerli, K. M., Santos, M. J., Macfarlane, G. J., Codreanu, C., Eklund, K., Pombo-Suarez, M., Rotar, Z., Gudbjornsson, B., Rusman, T., Ostergaard, M. & Hetland, M. L., 1 Aug 2023, In: Journal of Rheumatology. 50, 8, p. 1009-1019 11 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• The feasibility of existing JADAS10 cut-off values in clinical practice: a study of data from The Finnish Rheumatology Quality Register

  Backström, M., Salo, H., Kärki, J., Aalto, K., Rebane, K., Levälampi, T., Gronlund, M.-M., Kroger, L., Pohjankoski, H., Hietanen, M., Korkatti, K., Kuusalo, L., Rantalaiho, V., Huhtakangas, J., Relas, H., Paakko, T., Loyttyniemi, E., Sokka-Isler, T. & Vähäsalo, P., 14 Apr 2023, In: Pediatric Rheumatology Online Journal. 21, 1, 9 p., 35.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• 2022

  Adalimumab and sulfasalazine in alleviating sacroiliac and aortic inflammation detected in PET/CT in patients with axial spondyloarthritis: PETSPA

  Kaijasilta, J.-P., Kerola, A. M., Tuompo, R., Relas, H., Loimaala, A., Koivu, H., Schildt, J., Kerola, T., Eklund, K., Kauppi, M. J. & Nieminen, T. V. M., Feb 2022, In: Immunity, Inflammation and Disease. 10, 2, p. 155-162 8 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Do patient-reported measures of disease activity in rheumatoid arthritis vary between countries? Results from a Nordic collaboration

  Delcoigne, B., Provan, S. A., Hammer, H. B., Di Giuseppe, D., Frisell, T., Glintborg, B., Grondal, G., Gudbjornson, B., Hetland, M. L., Michelsen, B., Nordström, D., Relas, H. & Askling, J., 2 Nov 2022, In: Rheumatology. 61, 11, p. 4286-4296 11 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• European bio-naive spondyloarthritis patients initiating TNF inhibitor: time trends in baseline characteristics, treatment retention and response

  Christiansen, S. N., Ornbjerg, L. M., Rasmussen, S. H., Loft, A. G., Askling, J., Iannone, F., Zavada, J., Michelsen, B., Nissen, M., Onen, F., Santos, M. J., Pombo-Suarez, M., Relas, H., Macfarlane, G. J., Tomsic, M., Codreanu, C., Gudbjornsson, B., Van der Horst-Bruinsma, I., Di Giuseppe, D. & Glintborg, B. & 16 others, Gremese, E., Pavelka, K., Kristianslund, E. K., Ciurea, A., Akkoc, N., Barcelos, A., Sanchez-Piedra, C., Peltomaa, R., Jones, G. T., Rotar, Z., Ionescu, R., Grondal, G., Van de Sande, M. G. H., Laas, K., Ostergaard, M. & Hetland, M. L., 30 Aug 2022, In: Rheumatology. 61, 9, p. 3799-3807 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Immunogenicity of subcutaneous TNF inhibitors and its clinical significance in real-life setting in patients with spondyloarthritis

  FinADASpA Study Grp, Hiltunen, J., Parmanne, P., Sokka, T., Lamberg, T., Isomäki, P., Kaipiainen-Seppänen, O., Peltomaa, R., Uutela, T., Pirila, L., Taimen, K., Kauppi, M. J., Yli-Kerttula, T., Tuompo, R., Relas, H., Kortelainen, S., Paalanen, K., Asikainen, J., Ekman, P. & Santisteban, A. & 11 others, Vidqvist, K.-L., Tadesse, K., Romu, M., Borodina, J., Elfving, P., Valleala, H., Leirisalo-Repo, M., Rantalaiho, M., Kautiainen, H., Jokiranta, T. S. & Eklund, K. K., 2022, In: Rheumatology International. 42, p. 1015–1025 11 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Predictors of ASDAS-CRP inactive disease in axial spondyloarthritis during treatment with TNF-inhibitors: Data from the EuroSpA collaboration

  Ornbjerg, L. M., Linde, L., Georgiadis, S., Rasmussen, S. H., Lindström, U., Askling, J., Michelsen, B., Di Giuseppe, D., Wallman, J. K., Pavelka, K., Zavada, J., Nissen, M. J., Jones, G. T., Relas, H., Pirila, L., Rotar, Z., Geirsson, A. J., Gudbjornsson, B., Kristianslund, E. K. & Horst-Bruinsma, I. V. S. & 13 others, Loft, A. G., Laas, K., Iannone, F., Corrado, A., Ciurea, A., Santos, M. J., Santos, H., Codreanu, C., Akkoc, N., Gunduz, O. S., Glintborg, B., Ostergaard, M. & Hetland, M. L., Oct 2022, In: Seminars in Arthritis and Rheumatism. 56, 11 p., 152081.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Short-term, intermediate-term and long-term risks of acute coronary syndrome in cohorts of patients with RA starting biologic DMARDs: results from four Nordic countries

  Delcoigne, B., Ljung, L., Provan, S. A., Glintborg, B., Hetland, M. L., Gron, K. L., Peltomaa, R., Relas, H., Turesson, C., Gudbjornsson, B., Michelsen, B. & Askling, J., Jun 2022, In: Annals of the Rheumatic Diseases. 81, 6, p. 789-797 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• The impact of a csDMARD in combination with a TNF inhibitor on drug retention and clinical remission in axial spondylarthritis

  Nissen, M., Delcoigne, B., Di Giuseppe, D., Jacobsson, L., Hetland, M. L., Ciurea, A., Nekvindova, L., Iannone, F., Akkoc, N., Sokka-Isler, T., Fagerli, K. M., Santos, M. J., Codreanu, C., Pombo-Suarez, M., Rotar, Z., Gudbjornsson, B., Van der Horst-Bruinsma, I., Loft, A. G., Moeller, B. & Mann, H. & 12 others, Conti, F., Cetin, G. Y., Relas, H., Michelsen, B., Ribeiro, P. A., Ionescu, R., Sanchez-Piedra, C., Tomsic, M., Geirsson, A. J., Askling, J., Glintborg, B. & Lindström, U., Dec 2022, In: Rheumatology. 61, 12, p. 4741-4751 11 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• The occurrence of multiple treatment switches in axial spondyloarthritis. Results from five Nordic rheumatology registries

  Di Giuseppe, D., Lindström, U., Aaltonen, K., Relas, H., Provan, S., Gudbjornsson, B., Hetland, M. L., Askling, J., Kauppi, M., Geirsson, A. J., Chatzidionysiou, K., Jørgensen, T. S., Dreyer, L., Michelsen, B., Jacobsson, L. T. H. & Glintborg, B., Aug 2022, In: Rheumatology. 61, 9, p. 3647-3656 keab946.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File

• Transition to adult care in Finnish adolescents with juvenile idiopathic arthritis

  Mikola, K., Rebane, K., Glerup, M., Kautiainen, H., Relas, H., Peltoniemi, S. & Aalto, K., 2 Nov 2022, In: Scandinavian Journal of Rheumatology. 51, 6, p. 490-494 5 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2021

  Effectiveness and treatment retention of TNF inhibitors when used as monotherapy versus comedication with csDMARDs in 15 332 patients with psoriatic arthritis. Data from the EuroSpA collaboration

  Lindström, U., Di Giuseppe, D., Delcoigne, B., Glintborg, B., Moller, B., Ciurea, A., Pombo-Suarez, M., Sanchez-Piedra, C., Eklund, K., Relas, H., Gudbjornsson, B., Love, T. J., Jones, G. T., Codreanu, C., Ionescu, R., Nekvindova, L., Zavada, J., Atas, N., Yolbas, S. & Fagerli, K. M. & 11 others, Michelsen, B., Rotar, Z., Tomsic, M., Iannone, F., Santos, M. J., Avila-Ribeiro, P., Ornbjerg, L. M., Ostergaard, M., Jacobsson, L. T. H., Askling, J. & Nissen, M. J., Nov 2021, In: Annals of the Rheumatic Diseases. 80, 11, p. 1410-1418 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Patients with psychiatric diagnoses have lower quality of life than other patients with juvenile rheumatic disease: a prospective study

  Kosola, S. & Relas, H., Dec 2021, In: Rheumatology. 60, 12, p. 5560-5566 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

  File
• 2020

  Granulocyte colony-stimulating factor- and chemotherapy-induced large-vessel vasculitis: six patient cases and a systematic literature review

  Taimen, K., Heino, S., Kohonen, I., Relas, H., Huovinen, R., Hänninen, A. & Pirilä, L., 2020, In: Rheumatology Advances in Practice. 4, 1, 10 p., 004.

  Research output: Contribution to journal › Review Article › peer-review

  Open Access

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• Terveydenhuollon kansalliset laaturekisteripilotit loppusuoralla

  Keinänen, M., Brummer-Korvenkontio, H., Eskola, M., Ettala, O., Hartikainen, J., Hovi, P., Isosomppi, S., Kivelä, P., Kärki, J., Kärkkäinen, J., Laatikainen, T., Liukko, E., Niemi, A., Mattila, E., Meriläinen, M., Mustonen, P., Pekkanen, L., Puolakka, K., Relas, H. & Sainio, S. & 6 others, Salo, H., Salonen, J., Sokka-Isler, T., Suvisaari, J., Tahkola, A. & Tiirinki, H., 2020, In: Suomen lääkärilehti. 75, 50, p. 2788-2791 4 p.

  Research output: Contribution to journal › Article › Professional

  Open Access

  File
• 2019

  Acceptable quality of life and low disease activity achievable among transition phase patients with rheumatic disease

  Relas, H. & Kosola, S., Mar 2019, In: Clinical Rheumatology. 38, 3, p. 785-791 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Cost-effectiveness of abatacept, tocilizumab and TNF-inhibitors compared with rituximab as second-line biologic drug in rheumatoid arthritis

  Huoponen, S., Aaltonen, K. J., Viikinkoski, J., Rutanen, J., Relas, H., Taimen, K., Puolakka, K., Nordström, D. & Blom, M., 24 Jul 2019, In: PLoS One. 14, 7, 14 p., 0220142.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• Disability and health-related quality of life are associated with restricted social participation in young adults with juvenile idiopathic arthritis

  Rebane, K., Ristolainen, L., Relas, H., Orenius, T., Kautiainen, H., Luosujärvi, R., Aalto, K. & Säilä, H., 4 Mar 2019, In: Scandinavian Journal of Rheumatology. 48, 2, p. 105-113 9 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

• Pain interference and associated factors in young adults with juvenile idiopathic arthritis

  Rebane, K., Orenius, T., Ristolainen, L., Relas, H., Kautiainen, H., Luosujärvi, R., Säilä, H. & Aalto, K., 3 Sept 2019, In: Scandinavian Journal of Rheumatology. 48, 5, p. 408-414 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review
• 2018

  Outcome of transition phase patients with juvenile idiopathic arthritis

  Relas, H., Luosujarvi, R. & Kosola, S., 2018, In: Modern Rheumatology. 28, 5, p. 832-837 6 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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• 2017

  Synovial fluid detection in intra-articular injections using a bioimpedance probe (BIP) needle-a clinical study

  Halonen, S., Kankaanpää, E., Kari, J., Parmanne, P., Relas, H., Kronstrom, K., Luosujärvi, R. & Peltomaa, R., Jun 2017, In: Clinical Rheumatology. 36, 6, p. 1349-1355 7 p.

  Research output: Contribution to journal › Article › Scientific › peer-review

  Open Access

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