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Estimation of Health-Related Utilities for 177Lu-DOTATATE in GEP-NET Patients Using Utilities Mapped from EORTC QLQ-C30 to EQ-5D-3L and QLU-C10D Utilities

Author

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  • Ioana-Alexandra Soare

    (PHMR Limited)

  • Oscar Leeuwenkamp

    (Advanced Accelerator Applications, a Novartis company)

  • Louise Longworth

    (PHMR Limited)

Abstract

Background Gastroenteropancreatic neuroendocrine tumours (GEP-NET) are a rare, life-threatening type of cancer. The survival benefit of 177Lu-DOTATATE has been demonstrated in GEP-NET patients. Health technology assessment bodies require data on health-related utility impacts of treatment. A cancer-specific instrument, EORTC QLQ-C30, was used to collect the data for 177Lu-DOTATATE within clinical studies, but utility-based instruments were not included. Objective The main aim of this study was to compare EQ-5D-3L and QLU-C10D utilities obtained from EORTC QLQ-C30 using two different approaches. A secondary aim was to analyse the EQ-5D-3L and QLU-C10D utilities of patients treated with 177Lu-DOTATATE versus best supportive care. A supplementary aim was to evaluate the effect of 177Lu-DOTATATE on patients’ health-related utility over time. Methods Three datasets were used for the analysis. NETTER-1 is a clinical trial, whilst ERASMUS and Guy’s and St. Thomas (GStT) are real-world datasets. Two mapping algorithms (response mapping and ordinary least square regression) were applied to generate EQ-5D-3L utilities from EORTC QLQ-C30. An algorithm was used to obtain QLU-C10D utilities from EORTC QLQ-C30. Results In all studies, EQ-5D-3L utilities were higher than QLU-C10D utilities at most time points measured, although the magnitude of the differences was small. In NETTER-1, EQ-5D-3L and QLU-C10D utilities were higher in the 177Lu-DOTATATE arm compared with the octreotide long-acting release (LAR) arm, overall and pre-progression. In all studies, patients’ health-related utilities seem to be maintained over time. Conclusion There were small differences between EQ-5D-3L and QLU-C10D utilities, but these did not translate to relative differences over time or between groups. In NETTER-1, patients in the 177Lu-DOTATATE arm had higher health-related utilities than patients in the octreotide LAR arm. Health-related utility may at least remain maintained in patients with GEP-NET receiving 177Lu-DOTATATE.

Suggested Citation

  • Ioana-Alexandra Soare & Oscar Leeuwenkamp & Louise Longworth, 2021. "Estimation of Health-Related Utilities for 177Lu-DOTATATE in GEP-NET Patients Using Utilities Mapped from EORTC QLQ-C30 to EQ-5D-3L and QLU-C10D Utilities," PharmacoEconomics - Open, Springer, vol. 5(4), pages 715-725, December.
    • Handle: RePEc:spr:pharmo:v:5:y:2021:i:4:d:10.1007_s41669-021-00280-9
    DOI: 10.1007/s41669-021-00280-9
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    References listed on IDEAS

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    1. John Brazier & Aki Tsuchiya, 2010. "Preference‐based condition‐specific measures of health: what happens to cross programme comparability?," Health Economics, John Wiley & Sons, Ltd., vol. 19(2), pages 125-129, February.
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