Long-term cost-effectiveness of Oncotype DX® versus current clinical practice from a Dutch cost perspective

This study analyzes the incremental cost-effectiveness of Oncotype DX(®) testing to support adjuvant chemotherapy recommendations, versus current clinical practice, for patients with estrogen receptor-positive (ER(+)), node-negative or micrometastatic (pN1mic) early-stage breast cancer in The Netherlands. Markov model projecting distant recurrence, survival, quality-adjusted life years (QALYs) and healthcare costs over a 30-year time horizon. Oncotype DX was projected to increase QALYs by 0.11 (0.07-0.58) and costs with €1236 (range: -€142-€1236) resulting in an incremental cost-effectiveness ratio of €11,236/QALY under the most conservative scenario. Reallocation of adjuvant chemotherapy based on Oncotype DX testing is most likely a cost-effective use of scarce resources, improving long-term survival and QALYs at marginal or lower costs.