22 februari 2023: Bron: Journal of Clinical Oncology Published online January 31, 2023.
Uit een nieuwe definitieve analyse van de fase III studie ADAURA blijkt dat Tyrosine Kinase Remmer Osimertinib aanvullend op chemo bij patiënten met niet-kleincellige longkanker met EGFR-gemuteerde stadium IB tot IIIA na volledige operatie een heel goed resultaat geeft op overall overleving en progressievrije ziekte.
Het ziektevrije overlevingspercentage na 4 jaar was 73% voor osimertinib en 38% voor placebo.
Onder behandeling met osimertinib aanvullend op chemo had op 4-jaars meting 13% van de patiënten metastasen op afstand en 12% had alleen lokaal/regionaal recidief. In vergelijking met percentages van respectievelijk 31% en 23% onder behandeling met chemo plus placebo. Met geen extra bijwerkingen t.o.v. alleen chemo. Een behoorlijk groot verschil dus met een verdubbeling van de ziektevrije overleving en statistisch significant.
Hier de originele tekst over het belang van deze studie:
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Key Objective
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ADAURA is an ongoing phase III trial assessing efficacy and safety of osimertinib versus placebo in patients with completely resected stage IB-IIIA non–small-cell lung cancer, with/without adjuvant chemotherapy. After 2 years of additional follow-up, we report updated analyses of final disease-free survival (DFS) data, recurrence patterns, and long-term safety.
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Knowledge Generated
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These updated data, in which all patients had the opportunity to receive 3 years of planned treatment, were consistent with the primary analysis and demonstrated prolonged DFS benefit with adjuvant osimertinib versus placebo: stage II-IIIA DFS hazard ratio, 0.23; 95% CI, 0.18 to 0.30; stage IB-IIIA DFS hazard ratio, 0.27; 95% CI, 0.21 to 0.34. Adjuvant osimertinib reduced the risk of local and distant recurrence, and improved CNS DFS. The long-term safety profile of osimertinib was consistent with the primary analysis.
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Relevance (T.E. Stinchcombe)
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The final DFS analysis demonstrated that adjuvant osimertinib improved DFS in resected EGFR-mutant non–small-cell lung cancer, and in the patient subgroups analyzed.*
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*Relevance section written by JCO Associate Editor Thomas E. Stinchcombe, MD.
Het volledige studierapport is gratis in te zien. Klik op de titel van het abstract.
*R.S.H. and Y.-L.W. contributed equally to this work.
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