ObjectiveTo determine whether a next-generation sequencing (NGS) panel of 34 cancer-associated genes would cost-effectively aid in the treatment selection for patients with metastatic melanoma, compared with a single-site BRAF V600 mutation test.MethodsA decision model was developed to estimate the costs and health outcomes of the two test strategies. The cost effectiveness of these two strategies was analyzed from a payer perspective over a 2-year time horizon with model parameters taken from the literature.ResultsIn the base case, the gene sequencing panel strategy resulted in a cost of US120,022and0.721qualityโadjustedlifeyears(QALYs)perpatient,whereasthesingleโsitemutationteststrategyresultedinacostofUS128,965 and 0.704 QALYs. Thus, the gene sequencing panel strategy cost US8943lessperpatientandincreasedQALYsby0.0174perpatient.Sensitivityanalysesshowedthat,comparedwiththesingleโsitemutationteststrategy,thegenesequencingpanelstrategyhada90.979.6 million and a gain of 155 QALYs