The Changing Role of Gene-Expression Profiling in the Era of De-escalating Adjuvant Chemotherapy in Early-Stage Breast Cancer

Autor: J E C van Steenhoven, K. Schreuder, P. J. Van Diest, Sjoerd G. Elias, Sabine Siesling, E. van der Wall, T. van Dalen, Anne Kuijer
Přispěvatelé: Health Technology & Services Research
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Annals of surgical oncology, 26(11), 3495-3501. Springer
Annals of Surgical Oncology
Annals of Surgical Oncology, 26(11), 3495. Springer New York
ISSN: 1068-9265
Popis: Purpose We assessed the recent trends in the administration of adjuvant chemotherapy thereby evaluating the role of the 70-gene signature (70-GS) testing in decision-making in the systemic treatment of patients with lymph node negative (N0) and lymph node positive (N+) breast cancer. Methods Patients with a national guideline directed indication for 70-GS use treated between 2013 and 2016 were selected from the Netherlands Cancer Registry. Time trends in the administration of adjuvant chemotherapy were evaluated within guideline- and age-delineated subgroups. The influence of the 70-GS on chemotherapy use was assessed with logistic regression. Results During the study period, the overall administration of adjuvant chemotherapy decreased from 49 to 23% and 70-GS use increased from 24 to 51%. The 70-GS was not associated with a decreased likelihood for N0 patients to receive chemotherapy (odds ratio [OR] 1.0; 95% confidence interval [CI] 0.86–1.17), as the proportion of N0 patients who received chemotherapy in the absence of 70-GS use decreased during the study period. In patients with N1a disease, 70-GS testing was associated with a decreased likelihood to receive chemotherapy (OR 0.21; 95% CI 0.15–0.29). In patients
Databáze: OpenAIRE