• Multimodal classification of molecular subtypes in pediatric acute lymphoblastic leukemia 

      Krali, Olga; Marincevic-Zuniga, Yanara; Arvidsson, Gustav; Enblad, Anna Pia; Lundmark, Anders; Sayyab, Shumaila; Zachariadis, Vasilios; Heinäniemi, Merja; Suhonen, Janne; Oksa, Laura; Vepsäläinen, Kaisa; Öfverholm, Ingegerd; Barbany, Gisela; Nordgren, Ann; Lilljebjörn, Henrik; Fioretos, Thoas; Madsen, Hans O.; Marquart, Hanne Vibeke; Flægstad, Trond; Forestier, Erik; Jónsson, Ólafur G.; Kanerva, Jukka; Lohi, Olli; Norén-Nyström, Ulrika; Schmiegelow, Kjeld; Harila, Arja; Heyman, Mats; Lönnerholm, Gudmar; Syvänen, Ann-Christine; Nordlund, Jessica (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-08)
      Genomic analyses have redefined the molecular subgrouping of pediatric acute lymphoblastic leukemia (ALL). Molecular subgroups guide risk-stratification and targeted therapies, but outcomes of recently identified subtypes are often unclear, owing to limited cases with comprehensive profiling and cross-protocol studies. We developed a machine learning tool (ALLIUM) for the molecular subclassification ...
    • MYCN-regulated miRNAs Inhibit Secretion of the Tumor Suppressor DICKKOPF-3 (DKK3) in Neuroblastoma 

      Haug, Bjørn Helge; Henriksen, Jørn Remi; Buechner, Jochen; Kogner, Per; Martinsson, Tommy; Flægstad, Trond; Sveinbjørnsson, Baldur; Einvik, Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      The MYCN oncogene is frequently amplified in neuroblastoma. It is one of the most consistent markers of a bad prognosis for this disease. Dickkopf-3 (DKK3) is a secreted protein of the Dickkopf family of Wnt regulators. It functions as a tumor suppressor in a range of cancers, including neuroblastoma. MYCN was recently found to downregulate DKK3 mRNA. In this study, we show that MYCN knockdown in ...
    • A Nationwide Study of GATA2 Deficiency in Norway-the Majority of Patients Have Undergone Allo-HSCT 

      Jørgensen, Silje Fjellgård; Buechner, Jochen; Myhre, Anders E.; Galteland, Eivind; Spetalen, Signe; Kulseth, Mari Ann; Sorte, Hanne Sørmo; Holla, Øystein Lunde; Lundman, Emma; Alme, Charlotte; Heier, Ingvild; Flægstad, Trond; Fløisand, Yngvar; Benneche, Andreas; Fevang, Børre; Aukrust, Pål; Stray-Pedersen, Asbjørn; Gedde-Dahl, Tobias; Nordøy, Ingvild (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-10)
      Purpose: GATA2 deficiency is a rare primary immunodeficiency that has become increasingly recognized due to improved molecular diagnostics and clinical awareness. The only cure for GATA2 deficiency is allogeneic hematopoietic stem cell transplantation (allo-HSCT). The inconsistency of genotype-phenotype correlations makes the decision regarding "who and when" to transplant challenging. Despite ...
    • No additional long-term effect of group vs individual family intervention in the treatment of childhood obesity - A randomised trial 

      Kokkvoll, Ane Sofie; Grimsgaard, Sameline; Flægstad, Trond; Andersen, Lars Bo; Ball, Geoff; Wilsgaard, Tom; Njølstad, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-25)
      <i>Aim</i> - Long‐term evaluations of childhood obesity treatments are needed. We examined changes in weight and cardiometabolic risk 1 year after children completed individual family or group‐based weight management interventions.<p><p> <i>Methods</i> - In 2009‐2010, 6‐ to 12‐year‐old children with overweight or obesity from Finnmark and Troms (Norway) were recruited after media coverage and ...
    • The Norwegian childhood cancer biobank 

      Hermansen, Johanne Uthus; Wojcik, Dorota; Robinson, Nina; Pahnke, Jens; Haugland, Hans Kristian; Jamtøy, Ann-Helen; Flægstad, Trond; Halvorsen, Hanne; Lund, Bendik; Baumbusch, Lars Oliver; Munthe-Kaas, Monica Cheng (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-20)
      Background - The rapidly expanding era of “omics” research is highly dependent on the availability of quality-proven biological material, especially for rare conditions such as pediatric malignancies. Professional biobanks provide such material, focusing on standardized collection and handling procedures, distinctive quality measurements, traceability of storage conditions, and accessibility. For ...
    • Novel GTF2I-PDGFRB and IKZF1-TYW1 fusions in pediatric leukemia with normal karyotype 

      Panagopoulos, Ioannis; Brunetti, Marta; Stoltenberg, Margrethe; Strandabø, Rønnaug; Staurseth, Julie; Andersen, Kristin; Kostolomov, Ilya; Hveem, Tarjei Sveinsgjerd; Lorenz, Susanne; Nystad, Tove Anita; Flægstad, Trond; Micci, Francesca; Heim, Sverre (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-29)
      <i>Background</i> - Many cases of acute lymphoblastic leukemia (ALL) carry visible acquired chromosomal changes of pathogenetic, diagnostic, and prognostic importance. Nevertheless, from one-fourth to half of newly diagnosed ALL patients have no visible chromosomal changes detectable by G-banding analysis at diagnosis. The introduction of powerful molecular methodologies has shown that many ...
    • Patterns of detectable viraemia among children and adults with HIV infection taking antiretroviral therapy in Zimbabwe 

      Sovershaeva, Evgeniya; Shamu, Tinei; Wilsgaard, Tom; Bandason, Tsitsi; Flægstad, Trond; Katzenstein, David; Ferrand, Rashida A.; Odland, Jon Øyvind (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-31)
      <i>Objective</i>: To investigate the incidence and predictors of viraemia among individuals on antiretroviral therapy (ART) in Harare, Zimbabwe.<p> <p><i>Methods</i>: Children (0–19 years) and adults (>19 years) starting ART between 2013 and 2015 were followed for a median of 2.8 and 2.7 years, respectively. The incidence rates of virological failure (VF), low-level viraemia (LLV), and viral ...
    • Single versus multiple-family intervention in childhood overweight - Finnmark Activity School: A randomised trial 

      Kokkvoll, Ane Sofie; Grimsgaard, Sameline; Ødegård, Rønnaug; Flægstad, Trond; Njølstad, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • The synthetic antimicrobial peptide LTX21 induces inflammatory responses in a human whole blood model and a murine peritoneum model 

      Granslo, Hildegunn Norbakken; Aarag, Elizabeth; Esaiassen, Eirin; Christophersen, Lars; Jensen, Peter Østrup; Mollnes, Tom Eirik; Moser, Claus; Flægstad, Trond; Klingenberg, Claus; Cavanagh, Jorunn Pauline (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-27)
      The global spread of antimicrobial resistance and the increasing number of immune‐compromised patients are major challenges in modern medicine. Targeting bacterial virulence or the human host immune system to increase host defence are important strategies in the search for novel antimicrobial drugs. We investigated the inflammatory response of the synthetic short antimicrobial peptide LTX21 in two ...
    • Tumour-suppressor microRNAs let-7 and mir-101 target the proto-oncogene MYCN and inhibit cell proliferation in MYCN-amplified neuroblastoma 

      Buechner, Jochen; Tømte, Ellen; Haug, Bjørn Helge; Henriksen, Jørn Remi; Løkke, Cecilie; Flægstad, Trond; Einvik, Christer (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-06-07)
      BACKGROUND: MicroRNAs (miRNAs) regulate expression of many cancer-related genes through posttranscriptional repression of their mRNAs. In this study we investigate the proto-oncogene MYCN as a target for miRNA regulation.<p> <p>METHODS: A luciferase reporter assay was used to investigate software-predicted miRNA target sites in the 30 -untranslated region (30 UTR) of MYCN. The miRNAs were ...
    • Whole-genome sequencing reveals clonal expansion of multiresistant Staphylococcus heamolyticus in European hopsitals 

      Cavanagh, Jorunn Pauline; Hjerde, Erik; Holden, Matthew T.G.; Kahlke, Tim; Klingenberg, Claus; Flægstad, Trond; Parkhill, J; Bentley, Stephen D; Sollid, Johanna U Ericson (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Widespread hyperalgesia in adolescents with symptoms of irritable bowel syndrome: results from a large population-based study 

      Stabell, Niklas; Stubhaug, Audun; Flægstad, Trond; Mayer, Emeran; Naliboff, Bruce D; Nielsen, Christopher Sivert (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-06-03)
      Widespread hyperalgesia is well documented among adult patients with Irritable Bowel Syndrome (IBS), but little is known about pain sensitivity among adolescents with IBS. We examined pain sensitivity in 961 adolescents from the general population (mean age 16.1 years), including pain threshold and tolerance measurements of heat (forearm) and pressure pain (fingernail and shoulder), and ...