Cost-Effectiveness of Subsequent Whole-Brain Radiotherapy or Hippocampal-Avoidant Whole-Brain Radiotherapy Versus Stereotactic Radiosurgery or Surgery Alone for Treatment of Melanoma Brain Metastases.

Applied Health Economics and Health Policy
Anh Dam TranRachael L Morton

Abstract

A randomized phase III trial comparing whole-brain radiotherapy (WBRT) to observation following definitive local treatment of intracranial melanoma metastases with neurosurgery and/or stereotactic surgery (SRS) is underway. We sought to assess the pre-trial cost-effectiveness of WBRT, hippocampal-avoidant WBRT (HA-WBRT), and observation (SRS or surgery alone) for this population to guide trial data collection efforts and reduce decision uncertainty.  METHODS: A time-dependent Markov model followed patients treated with neurosurgery or SRS who received subsequent WBRT, HA-WBRT or observation over a 5-year time horizon. Model inputs were sourced from published literature and results tested for robustness using probabilistic sensitivity analysis. Value of information (VOI) analysis was undertaken to guide data collection for the randomized trial. Over 5 years, the WBRT strategy produced 1.74 QALYs (2.38 life-years) at a mean cost of $40,128 (costs in 2017 Australian dollars); HA-WBRT produced 1.88 QALYs (2.38 life-years) and cost $42,977; and SRS/surgery alone produced 1.65 QALYs (2.13 life-years) at a cost of $46,281. Probabilistic sensitivity analysis showed HA-WBRT was the preferred strategy in 77% of simulations. Cost-effectiv...Continue Reading

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Citations

Apr 22, 2020·Neurosurgery·Cecilia JiangMohammad K Khan

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