Abstract
BACKGROUNDGastroenteropancreatic neuroendocrine tumors (GEP-NETs) represent a relatively rare and heterogenous group of tumors. Currently available treatment options for patients with progressive GEP-NETs include lutetium (177Lu) oxodotreotide (177Lu-Dotatate) and everolimus [as well as sunitinib for patients with pancreatic NETs (P-NETs)]. AIMTo perform a health economic analysis to determine the cost-effectiveness of 177Lu-Dotatate compared with everolimus in patients with unresectable or metastatic midgut-NETs or P-NETs in both Sweden and Norway.METHODSSimulations were performed using a three-state partitioned survival model and analyses were performed separately for patients with midgut-NETs and P-NETs. Clinical input data were sourced from an indirect comparison that utilized survival data from clinical trials of 177Lu-Dotatate and everolimus. The analyses were performed from the healthcare payer perspective over a time horizon of 20 years. For Sweden, future costs and clinical outcomes were discounted at 3% per annum. For Norway, a discount rate of 4% per annum was applied.RESULTSFor Sweden, improved survival outcomes and higher lifetime costs with 177Lu-Dotatate resulted in an incremental cost-effectiveness ratio (ICER) of SEK 391194 per quality-adjusted life year (QALY) gained for midgut NETs and SEK 16764 per QALY gained for P-NETs for 177Lu-Dotatate compared with everolimus. For Norway, the corresponding ICERs were NOK 244444 per QALY gained and NOK 106451 per QALY gained, respectively. One-way sensitivity analyses revealed that the results were most sensitive to changes in drug acquisition costs and health state utility values.CONCLUSIONIn both Sweden and Norway, from a healthcare provider perspective, 177Lu-Dotatate is likely to be considered cost-effective relative to everolimus for the treatment of patients with unresectable or metastatic, progressive midgut-NETs or P-NETs.
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