Blar i forfatter "Gran, Olga Vikhammer"

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    • Association of smoking and cancer with the risk of venous thromboembolism: the Scandinavian Thrombosis and Cancer cohort 

      Paulsen, Benedikte; Gran, Olga Vikhammer; Severinsen, Marianne T.; Hammerstrøm, Jens; Kristensen, Søren Risom; Cannegieter, Suzanne C.; Skille, Hanne; Tjønneland, Anne; Rosendaal, Frits; Overvad, Kim; Næss, Inger Anne; Hansen, John-Bjarne; Brækkan, Sigrid K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-21)
      Smoking is a well-established risk factor for cancer, and cancer patients have a high risk of venous thromboembolism (VTE). Conflicting results have been reported on the association between smoking and risk of VTE, and the effect of smoking on VTE-risk in subjects with cancer is scarcely studied. We aimed to investigate the association between smoking and VTE in subjects with and without cancer in ...

    • Combined effects of five prothrombotic genotypes and cancer on the risk of a first venous thromboembolic event 

      Skille, Hanne; Paulsen, Benedikte; Hveem, Kristian; Gabrielsen, Maiken Elvestad; Brumpton, Ben Michael; Hindberg, Kristian; Gran, Olga Vikhammer; Rosendaal, Frits Richard; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-16)
      Background - The role of combined prothrombotic genotypes in cancer‐related venous thromboembolism (VTE) is scarcely studied. We aimed to investigate the impact of a 5‐single nucleotide polymorphism (SNP) score on the risk of VTE in patients with and without cancer using a population‐based case‐cohort.<p> <p>Methods - Cases with a first VTE (n = 1493) and a subcohort (n = 13 072) were derived ...

    • D-Dimer Measured At First Venous Thromboembolism Is Associated With Future Risk Of Cancer 

      Gran, Olga Vikhammer; Brækkan, Sigrid Kufaas; Paulsen, Benedikte; Skille, Hanne; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12)
      D-dimer >5000 ng/ml at incident VTE is associated with a higher risk of subsequent cancer within one and two years. High D-dimer levels are also associated with more aggressive tumor biology and poor prognosis in these patients. As D-dimer is routinely measured in the assessment of suspected VTE, it may be a useful surrogate marker for the presence of an underlying malignancy. Our findings may suggest ...

    • Fibrinogen gamma gene rs2066865 and risk of cancer-related venous thromboembolism 

      Paulsen, Benedikte; Skille, Hanne; Smith, Erin N.; Hveem, Kristian; Gabrielsen, Maiken Elvestad; Brækkan, Sigrid Kufaas; Rosendaal, Frits Richard; Frazer, Kelly A.; Gran, Olga Vikhammer; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-03)
      Venous thromboembolism is a frequent complication in patients with cancer. Homozygous carriers of the fibrinogen gamma gene (FGG) rs2066865 have a moderately increased risk of venous thromboembolism, but the effect of the FGG variant in cancer is unknown. We aimed to investigate the effect of the FGG variant and active cancer on the risk of venous thromboembolism. Cases with incident venous ...

    • Genetic Variation Of Platelet Glycoprotein VI And The Risk Of Venous Thromboembolism 

      Skille, Hanne; Paulsen, Benedikte; Hveem, Kristian; Gabrielsen, Maiken Elvestad; Brumpton, Ben Michael; Hindberg, Kristian; Gran, Olga Vikhammer; Rosendaal, Frits Richard; Brækkan, Sigrid Kufaas; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-07)
      Family studies have indicated that heritability explains 50-60% of the venous thromboembolism (VTE) events, and in recent years, several single nucleotide polymorphisms (SNPs) have been found to influence the VTE risk. Glycoprotein 6 (GP6) rs1613662, also known as T13254C, is an A/G single nucleotide variation in amino acid 219, which results in a serine to proline substitution affecting ...

    • Joint effects of cancer and variants in the factor 5 gene on the risk of venous thromboembolism 

      Gran, Olga Vikhammer; Smith, Erin N.; Brækkan, Sigrid Kufaas; Jensvoll, Hilde; Solomon, Terry; Hindberg, Kristian; Wilsgaard, Tom; Rosendaal, Frits Richard; Frazer, Kelly A.; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09)
      Venous thromboembolism occurs frequently in cancer patients. Two variants in the factor 5 gene (F5), rs6025 encoding for the factor V Leiden mutation R506Q, and rs4524 encoding K858R, have been found to be associated with venous thromboembolism. We assessed the joint effect of active cancer and these two F5 variants on venous thromboembolism risk in a case-cohort study. Cases with a first venous ...

    • Long-Term Incidence of Venous Thromboembolism in Cancer: The Scandinavian Thrombosis and Cancer Cohort 

      Gade, Inger Lise; Brækkan, Sigrid Kufaas; Næss, Inger Anne; Hansen, John-Bjarne; Cannegieter, Suzanne C.; Rosendaal, Frits Richard; Overvad, Kim; Hindberg, Kristian; Hammerstrøm, Jens; Gran, Olga Vikhammer; Tjønneland, Anne; Severinsen, Marianne T.; Kristensen, Søren R (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-06)
      The risk of venous thromboembolism (VTE) in patients who survive the first years after a cancer diagnosis after the acute effects of disease and treatment in comparison to a similar background population has been sparsely investigated. The aim of the study was to investigate if incidence rates (IRs) of VTE differed in patients who were alive at least 2 years after a cancer diagnosis without VTE ...

    • Venous thromboembolism and cancer 

      Gran, Olga Vikhammer (Doctoral thesis; Doktorgradsavhandling, 2017-06-27)
      Venous thromboembolism (VTE) is a collective term for deep vein thrombosis and pulmonary embolism. VTE is a common cause of mortality and morbidity in patients with cancer, and may also be the first sign of an underlying malignancy. The first aim of this thesis was to investigate the risk of incident and recurrent VTE in active cancer compared to a cancer-free reference population and to explore the ...