• Active conventional treatment and three different biological treatments in early rheumatoid arthritis: Phase IV investigator initiated, randomised, observer blinded clinical trial 

      Hetland, Merete Lund; Haavardsholm, Espen A.; Rudin, Anna; Nordström, Dan C.; Nurmohamed, Michael; Gudbjornsson, Bjorn; Lampa, Jon; Hørslev-Petersen, Kim; Uhlig, Till; Grondal, Gerdur; Østergaard, Mikkel; Schrumpf, Marte; Twisk, Jos; Lend, Kristina; Krabbe, Simon; Hyldstrup, Lise; Lindqvist, Joakim; Hultgård Ekwall, Anna-Karin; Grøn, Kathrine Lederballe; Kapetanovic, Meliha C.; Faustini, Francesca; Tuompo, Riitta; Lorenzen, Tove; Cagnotto, Giovanni; Baecklund, Eva; Hendricks, Oliver; Vedder, Daisy; Sokka-Isler, Tuulikki; Husmark, Tomas; Ljoså, Maud-Kristine Aga; Brodin, Eli; Ellingsen, Torkell; Söderbergh, Annika; Rizk, Milad; Olsson, Åsa Reckner; Larsson, Per; Uhrenholt, Line; Just, Søren Andreas; Stevens, David John; Laurberg, Trine Bay; Bakland, Gunnstein; Olsen, Inge Christoffer; Vollenhoven, Ronald F. (Peer reviewed; Journal article, 2020)
      Objective To evaluate and compare benefits and harms of three biological treatments with different modes of action versus active conventional treatment in patients with early rheumatoid arthritis. Design Investigator ...
    • 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 

      Østergaard, Mikkel; Van Vollenhoven, Ronald F; Rudin, Anna; Hetland, Merete Lund; Schrumpf, Marte; Nordström, Dan C; Nurmohamed, Michael T; Gudbjornsson, Bjorn; Ørnbjerg, Lykke Midtbøll; Bøyesen, Pernille; Lend, Kristina; Hørslev-Petersen, Kim; Uhlig, Till; Sokka, Tuulikki; Grondal, Gerdur; Krabbe, Simon; Lindqvist, Joakim; Gjertsson, Inger; Glinatsi, Daniel; Kapetanovic, Meliha Crnkic; Aga, Anna-Birgitte; Faustini, Francesca; Parmanne, Pinja; Lorenzen, Tove; Giovanni, Cagnotto; Back, Johan; Hendricks, Oliver; Vedder, Daisy; Rannio, Tuomas; Grenholm, Emma; Ljoså, Maud-Kristine Aga; Brodin, Eli; Lindegaard, Hanne; Söderbergh, Annika; Rizk, Milad; Kastbom, Alf; Larsson, Per; Uhrenholt, Line; Just, Søren Andreas; Stevens, David John; Bay Laurbjerg, Trine; Bakland, Gunnstein; Olsen, Inge Christoffer; Haavardsholm, Espen A.; Lampa, Jon (Peer reviewed; Journal article, 2023)
      Background - The optimal first-line treatment in early rheumatoid arthritis (RA) is debated. We compared clinical and radiographic outcomes of active conventional therapy with each of three biological treatments with ...
    • Effect of Therapeutic Drug Monitoring vs Standard Therapy During Infliximab Induction on Disease Remission in Patients With Chronic Immune-Mediated Inflammatory Diseases: A Randomized Clinical Trial 

      Syversen, Silje Watterdal; Goll, Guro Løvik; Jørgensen, Kristin Kaasen; Sandanger, Øystein; Sexton, Joseph; Olsen, Inge Christoffer; Gehin, Johanna Elin; Warren, David; Brun, Marthe Kirkesæther; Klaasen, Rolf; Karlsen, Lars Normann; Noraberg, Geir; Zettel, Camilla; Ljoså, Maud-Kristine Aga; Haugen, Anne Julsrud; Njålla, Rune Johan; Bruun, Trude J; Seeberg, Kathrine; Michelsen, Brigitte; Strand, Eldri Kveine; Skorpe, Svanaug; Blomgren, Ingrid; Bragnes, Yngvill; Dotterud, Christian; Thune, Turid Jorunn; Ystrøm, Carl Magnus; Torp, Roald; Pawel, Mielnik; Mørk, Cato; Kvien, Tore Kristian; Jahnsen, Jørgen; Bolstad, Nils; Haavardsholm, Espen A. (Peer reviewed; Journal article, 2021)
      Importance: Proactive therapeutic drug monitoring (TDM), defined as individualized drug dosing based on scheduled monitoring of serum drug levels, has been proposed as an alternative to standard therapy to maximize efficacy ...
    • Evaluation of the Effects of Remdesivir and Hydroxychloroquine on Viral Clearance in COVID-19 : A Randomized Trial 

      Barratt-Due, Andreas; Olsen, Inge Christoffer; Nezvalova-Henriksen, Katerina; Kåsine, Trine; Lund-Johansen, Fridtjof; Hoel, Hedda Benedicte; Holten, Aleksander Rygh; Tveita, Anders Aune; Mathiessen, Alexander; Haugli, Mette; Eiken, Ragnhild; Kildal, Anders Benjamin; Berg, Åse; Johannessen, Asgeir; Heggelund, Lars; Dahl, Tuva Børresdatter; Skåra, Karoline Hansen; Pawel, Mielnik; Le, Lan Ai Kieu; Thoresen, Lars; Ernst, Gernot; Hoff, Dag Arne Lihaug; Skudal, Hilde Kristin; Kittang, Bård Reiakvam; Olsen, Roy Bjørkholt; Tholin, Birgitte; Ystrøm, Carl Magnus; Skei, Nina Vibeche; Tran, Trung; Dudman, Susanne Gjeruldsen; Andersen, Jan Terje; Hannula, Raisa; Dalgard, Olav; Finbråten, Ane-Kristine; Tonby, Kristian; Blomberg, Bjørn; Aballi, Saad; Fladeby, Cathrine; Steffensen, Anne Katrine; Müller, Fredrik; Dyrhol-Riise, Anne Ma; Trøseid, Marius; Aukrust, Pål (Peer reviewed; Journal article, 2021)
      Background: New treatment modalities are urgently needed for patients with COVID-19. The World Health Organization (WHO) Solidarity trial showed no effect of remdesivir or hydroxychloroquine (HCQ) on mortality, but the ...
    • The frequency of intrapartum caesarean section use with the WHO partograph versus Zhang's guideline in the Labour Progression Study (LaPS): a multicentre, cluster-randomised controlled trial 

      Bernitz, Stine; Dalbye, Inger Sofie Rebecka; Zhang, Jun; Eggebø, Torbjørn Moe; Frøslie, Kathrine Frey; Olsen, Inge Christoffer; Blix, Ellen; Øian, Pål (Peer reviewed; Journal article, 2018)
      Background There is an ongoing debate concerning which guidelines and monitoring tools are most beneficial for assessing labour progression, to help prevent use of intrapartum caesarean section (ICS). The WHO partograph ...
    • Investigating survival, quality of life and cognition in PROton versus photon therapy for IDH- mutated diffuse grade 2 and 3 GLIOmas (PRO-GLIO): a randomised controlled trial in Norway and Sweden 

      Heggebø, Liv Cathrine; Borgen, Ida Maria Henriksen; Rylander, Hillevi; Kiserud, Cecilie E.; Nordenmark, Tonje Kristin Haug; Hellebust, Taran Annette Paulsen; Evensen, Morten Egeberg; Gustavsson, Magnus; Ramberg, Christina; Sprauten, Mette; Magelssen, Henriette; Blakstad, Hanne; Moorthy, Janani; Andersson, Karin; Raunert, Ingela; Henry, Thomas; Moe, Cecilie; Granlund, Carin; Goplen, Dorota; Brekke, Jorunn; Johannessen, Tor-Christian Aase; Solheim, Tora S; Marienhagen, Kirsten; Humberset, Øyvind; Bergström, Per; Agrup, Måns; Dahl, Ludvig; Gubanski, Michael; Gojon, Helene; Brahme, Carl-Johan; Rydén, Isabelle; Jakola, Asgeir Store; Vik-Mo, Einar O.; Lie, Hanne Cathrine; Asphaug, Lars; Hervani, Maziar; Kristensen, Ingrid; Rüegg, Corina Silvia; Olsen, Inge Christoffer; Ledal, Rolf J; Degsell, Eskil; Werlenius, Katja; Blomstrand, Malin; Brandal, Petter (Peer reviewed; Journal article, 2023)
      Abstract Introduction The use of proton therapy increases globally despite a lack of randomised controlled trials demonstrating its efficacy and safety. Proton therapy enables sparing of non-neoplastic tissue from ...
    • The Labour Progression Study (LaPS): duration of labour following Zhang's guideline and the WHO partograph - a cluster randomised trial 

      Dalbye, Inger Sofie Rebecka; Blix, Ellen; Frøslie, Kathrine Frey; Zhang, Jun; Eggebø, Torbjørn Moe; Olsen, Inge Christoffer; Rozsa, Daniella Judit; Øian, Pål; Bernitz, Stine (Peer reviewed; Journal article, 2019)
      Objective: To investigate labour duration in different phases of labour when adhering to Zhang's guideline for labour progression compared with the WHO partograph. Design: A secondary analysis of a cluster randomised ...
    • Long‐term efficacy and safety of biosimilar infliximab (CT‐P13) after switching from originator infliximab: Open‐label extension of the NOR‐SWITCH trial 

      Goll, Guro Løvik; Jørgensen, Kristin Kaasen; Sexton, Joseph; Olsen, Inge Christoffer; Bolstad, Nils; Haavardsholm, Espen A.; Lundin, Knut Erik Aslaksen; Tveit, Kåre Steinar; Lorentzen, Merete; Berset, Ingrid Prytz; Fevang, Bjørg-Tilde Svanes; Kalstad, Synnøve; Ryggen, Kristin; Warren, David; Klaasen, Rolf; Asak, Øivind Wessel; Baigh, Somyeh; Blomgren, Ingrid; Brenna, Øystein; Bruun, Trude J; Dvergsnes, Katrine; Frigstad, Svein Oskar; Myrnes, Inger; Hatten, Ingvild Helgheim; Huppertz-Hauss, Gert; Henriksen, Magne; Hoie, Sunniva S.; Krogh, Jan Reidar; Midtgard, Irina P.; Mielnik, Pawel; Moum, Bjørn; Noraberg, Geir; Poyan, Armin; Prestegård, Ulf; Rashid, Haroon Ur; Strand, Eldri Kveine; Skjetne, Kristine; Seeberg, Kathrine; Torp, Roald; Ystrøm, Carl Magnus; Vold, Cecilia; Zettel, Camilla C.; Waksvik, Kenneth; Gulbrandsen, Bjørn; Hagfors, Jon; Mørk, Cato; Jahnsen, Jørgen; Kvien, Tore Kristian (Journal article; Peer reviewed, 2019)
      Background and objectives The 52‐week, randomized, double‐blind, noninferiority, government‐funded NOR‐SWITCH trial demonstrated that switching from infliximab originator to less expensive biosimilar CT‐P13 was not ...
    • Persistent pulmonary pathology after COVID-19 is associated with high viral load, weak antibody response, and high levels of matrix metalloproteinase-9 

      Lerum, Tøri Vigeland; Maltzahn, Niklas; Aukrust, Pål; Trøseid, Marius; Nezvalova-Henriksen, Katerina; Kåsine, Trine; Dyrhol-Riise, Anne Ma; Stiksrud, Birgitte; Haugli, Mette; Blomberg, Bjørn; Kittang, Bård Reiakvam; Johannessen, Asgeir; Hannula, Raisa; Aballi, Saad; Kildal, Anders Benjamin; Eiken, Ragnhild; Dahl, Tuva Børresdatter; Lund-Johansen, Fridtjof; Müller, Fredrik; Rivero, Jezabel Rodriguez; Meltzer, Carin; Einvik, Gunnar; Ueland, Thor; Olsen, Inge Christoffer; Barratt-Due, Andreas; Aaløkken, Trond Mogens; Skjønsberg, Ole Henning (Peer reviewed; Journal article, 2021)
      The association between pulmonary sequelae and markers of disease severity, as well as pro-fibrotic mediators, were studied in 108 patients 3 months after hospital admission for COVID-19. The COPD assessment test (CAT-score), ...
    • Respiratory dysfunction three months after severe COVID-19 is associated with gut microbiota alterations 

      Vestad, Beate; Ueland, Thor; Lerum, Tøri Vigeland; Dahl, Tuva Børresdatter; Holm, Kristian; Barratt-Due, Andreas; Kåsine, Trine; Dyrhol-Riise, Anne Ma; Stiksrud, Birgitte; Tonby, Kristian; Hoel, Hedda; Olsen, Inge Christoffer; Henriksen, Katerina N.; Tveita, Anders Aune; Manotheepan, Ravinea; Haugli, Mette; Eiken, Ragnhild; Berg, Åse; Halvorsen, Bente; Lekva, Tove; Ranheim, Trine; Michelsen, Annika Elisabeth; Kildal, Anders Benjamin; Johannessen, Asgeir; Thoresen, Lars; Skudal, Hilde Kristin; Kittang, Bård Reiakvam; Olsen, Roy Bjørkholt; Ystrøm, Carl Magnus; Skei, Nina Vibeche; Hannula, Raisa; Aballi, Saad; Kvåle, Reidar; Skjønsberg, Ole Henning; Aukrust, Pål; Hov, Johannes Espolin Roksund; Trøseid, Marius (Peer reviewed; Journal article, 2022)
      Background - Although coronavirus disease 2019 (COVID-19) is primarily a respiratory infection, mounting evidence suggests that the gastrointestinal tract is involved in the disease, with gut barrier dysfunction and gut ...
    • Safety and efficacy of faecal microbiota transplantation by Anaerobic Cultivated Human Intestinal Microbiome (ACHIM) in patients with systemic sclerosis: Study protocol for the randomised controlled phase II ReSScue trial 

      Hoffmann-Vold, Anna-Maria; Fretheim, Håvard Halland; Sarna, Vikas Kumar; Barua, Imon Shoumitra; Carstens, Maylen N.; Distler, Oliver; Khanna, Dinesh; Volkmann, Elizabeth R.; Midtvedt, Øyvind; Didriksen, Henriette; Dhainaut, Alvilde; Halse, Anne Kristine Hjorteseth; Bakland, Gunnstein; Pesonen, Maiju; Olsen, Inge Christoffer; Molberg, Øyvind (Peer reviewed; Journal article, 2021)
      Introduction In the multisystem inflammatory disorder systemic sclerosis (SSc), gastrointestinal tract (GIT) affliction is highly prevalent. There are no known disease modifying therapies and the negative impact is ...
    • The Analysis of Continuous Mark-Recapture Data 

      Olsen, Inge Christoffer (Doctoral thesis, 2006)
      The purpose of this thesis is to develop a general methodology for the analysis of continuously sampled data from open populations. The thesis consists of four parts and one appendix. The four parts may be read independently ...