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PP147 Olaratumab With Doxorubicin For Advanced Soft Tissue Sarcoma

  • Irina Tikhonova, Tracey Jones-Hughes, James Dunham, Fiona Warren, Sophie Robinson and Martin Hoyle...

Abstract

Introduction:

The National Institute for Health and Care Excellence (NICE) invited the manufacturer of olaratumab (Lartruvo®), Eli Lilly & Company Limited, to submit evidence for the clinical and cost effectiveness of this drug, in combination with doxorubicin, for advanced soft tissue sarcoma (STS) not amenable to surgery or radiotherapy, as part of the Institute's Single Technology Appraisal. The Peninsula Technology Assessment Group critically reviewed the submitted evidence.

Methods:

Clinical effectiveness was derived from an open-label, randomized controlled trial, JGDG. The economic analysis was based on a partitioned survival model with a time horizon of 25 years. The perspective was of the UK National Health Service (NHS) and Personal Social Services. Costs and benefits were discounted at 3.5 percent per year. The company's evidence was submitted in anticipation that olaratumab would be considered as an alternative to doxorubicin, which has been used as a first-line treatment for advanced STS. To improve the cost effectiveness of olaratumab, the company offered a discount through a Commercial Access Agreement with the NHS England.

Results:

In the company's submission, the mean base-case and probabilistic incremental cost-effectiveness ratios (ICERs) for olaratumab plus doxorubicin versus doxorubicin alone were GBP 46,076 (USD 61,403) and GBP 47,127 (USD 62,804) per quality-adjusted life-year (QALY) gained, respectively; the probability of this treatment being cost effective at the willingness-to-pay threshold of GBP 50,000 (USD 66,632) per QALY gained, applicable to end-of-life treatments, was 0.54. The respective estimates in our analysis were approximately GBP 60,000 (USD 79,959) per QALY gained, and the probability of cost-effectiveness was 0.21. The increase in the ICERs was primarily due to differences in extrapolation of overall survival, and drug administration costs.

Conclusions:

Based on the available evidence, olaratumab in combination with doxorubicin improves the survival of patients with advanced STS. However, this treatment is unlikely to be cost-effective. Olaratumab is now recommended for use within the Cancer Drugs Fund.

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