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Träfflista för sökning "WFRF:(Ostenstad Bjørn) "

Search: WFRF:(Ostenstad Bjørn)

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1.
  • Wahlin, Björn Engelbrekt, et al. (author)
  • T Cells in Tumors and Blood Predict Outcome in Follicular Lymphoma Treated with Rituximab
  • 2011
  • In: Clinical Cancer Research. - : American Association for Cancer Research. - 1078-0432 .- 1557-3265. ; 17:12, s. 4136-4144
  • Journal article (peer-reviewed)abstract
    • PURPOSE: T cells influence outcome in follicular lymphoma, but their contributions seem to be modified by therapy. Their impact in patients receiving rituximab without chemotherapy is unknown. EXPERIMENTAL DESIGN: Using flow cytometry, we evaluated the T cells in tumors and/or blood in a total of 250 follicular lymphoma patients included in two Nordic Lymphoma Group randomized trials that compared single rituximab with IFN-α2a-rituximab combinations. RESULTS: In univariate analysis, higher levels of CD3(+), CD4(+), and CD8(+) T cells in both tumors and blood correlated with superior treatment responses, and in multivariate analysis, tumor-CD3(+) (P = 0.011) and blood-CD4(+) (P = 0.029) cells were independent. CD4(+) cells were favorable regardless of treatment arm, but CD8(+) cells were favorable only in patients treated with single rituximab, because IFN-α2a improved responses especially in patients with low CD8(+) cell levels. Higher levels of blood-CD3(+) (P = 0.003) and blood-CD4(+) (P = 0.046) cells predicted longer overall survival, and higher levels of blood-CD8(+) cells longer times to next treatment (P = 0.046). CONCLUSIONS: We conclude that therapeutic effects of rituximab are augmented by tumor-associated T cells for rapid responses and by systemic T cells for sustained responses. CD4(+) and CD8(+) cells are both favorable in patients treated with rituximab. IFN-α2a abrogates the negative impact of few CD8(+) cells.
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2.
  • Pulczynski, Elisa J, et al. (author)
  • Successful change of treatment strategy in elderly patients with primary central nervous system lymphoma by de-escalating induction and introducing temozolomide maintenance: results from a phase 2 study by The Nordic Lymphoma Group.
  • 2015
  • In: Haematologica. - : Ferrata Storti Foundation (Haematologica). - 1592-8721 .- 0390-6078. ; 100:4, s. 534-540
  • Journal article (peer-reviewed)abstract
    • Background: Nordic Lymphoma Group has conducted a phase ll trial in primary central nervous system lymphoma patients applying age-adjusted multi-agent immunochemotherapy regimen, which in elderly patients included temozolomide maintenance treatment. Design and Methods: Patients with newly diagnosed PCNSL aged 18-75 years were eligible. Sixty-six patients (median age 64 years) were enrolled. Two age groups were predefined as those of 18-65 and 66-75 years of age. Results: The overall response rate was 90.8 %. With a median follow-up of 22 months, the 2-year overall survival probability was 60.7 % in patients < 65 years and 55.6% in patients > 65 years (p= 0.40). The estimated progression-free survival at 2 years was 33.1% (CI: 19.1%-47.9%) in patients < 65 years and 44.4% (CI: 25.6%-61.8%) in the elderly subgroup (p=0.74). Median duration of response was 10 months in the younger, not reached in the elderly patients (p=0.33). Four patients aged 64-75 years (6 %) died from treatment related complications. Conclusion: Survival in the two age groups was similar despite a de-escalation of induction treatment in patients > 65 years. Duration of response in elderly patients receiving maintenance temozolomide was longer than in the younger age subgroup. While toxicity during induction is still of concern especially in the elderly patients we conclude from these data that de-escalation of induction therapy in elderly PCNSL patients followed by maintenance treatment seems to be a promising treatment strategy. Trial registration: ClinicalTrials.gov number NCT01458730.
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