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Sökning: WFRF:(Burtness B)

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  • Zakeri, Kaveh, et al. (författare)
  • Predictive classifier for intensive treatment of head and neck cancer
  • 2020
  • Ingår i: Cancer. - : Wiley-Blackwell. - 0008-543X .- 1097-0142. ; 126:24, s. 5263-5273
  • Tidskriftsartikel (refereegranskat)abstract
    • Background This study was designed to test the hypothesis that the effectiveness of intensive treatment for locoregionally advanced head and neck cancer (LAHNC) depends on the proportion of patients' overall event risk attributable to cancer. Methods This study analyzed 22,339 patients with LAHNC treated in 81 randomized trials testing altered fractionation (AFX; Meta-Analysis of Radiotherapy in Squamous Cell Carcinomas of Head and Neck [MARCH] data set) or chemotherapy (Meta-Analysis of Chemotherapy in Head and Neck Cancer [MACH-NC] data set). Generalized competing event regression was applied to the control arms in MARCH, and patients were stratified by tertile according to the omega score, which quantified the relative hazard for cancer versus competing events. The classifier was externally validated on the MACH-NC data set. The study tested for interactions between the omega score and treatment effects on overall survival (OS). Results Factors associated with a higher omega score were a younger age, a better performance status, an oral cavity site, higher T and N categories, and a p16-negative/unknown status. The effect of AFX on OS was greater in patients with high omega scores (hazard ratio [HR], 0.92; 95% confidence interval [CI], 0.85-0.99) and medium omega scores (HR, 0.91; 95% CI, 0.84-0.98) versus low omega scores (HR, 0.97; 95% CI, 0.90-1.05;Pfor interaction = .086). The effect of chemotherapy on OS was significantly greater in patients with high omega scores (HR, 0.81; 95% CI, 0.75-0.88) and medium omega scores (HR, 0.86; 95% CI, 0.78-0.93) versus low omega scores (HR, 0.96; 95% CI, 0.86-1.08;Pfor interaction = .011). Conclusions LAHNC patients with a higher risk of cancer progression relative to competing mortality, as reflected by a higher omega score, selectively benefit from more intensive treatment.
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