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06-09-2018 | Uitgave 1/2019

Quality of Life Research 1/2019

Quality-adjusted survival of nivolumab plus ipilimumab or nivolumab alone versus ipilimumab alone among treatment-naive patients with advanced melanoma: a quality-adjusted time without symptoms or toxicity (Q-TWiST) analysis

Tijdschrift:
Quality of Life Research > Uitgave 1/2019
Auteurs:
David F. McDermott, Ruchit Shah, Komal Gupte-Singh, Javier Sabater, Linlin Luo, Marc Botteman, Sumati Rao, Meredith M. Regan, Michael Atkins
Belangrijke opmerkingen

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s11136-018-1984-3) contains supplementary material, which is available to authorized users.
Prior presentation: The data from this study were presented at the European Society for Medical Oncology (ESMO) 2017 Congress; September 8–12, 2017; Madrid, Spain.

Abstract

Purpose

To compare the quality-adjusted survival of nivolumab plus ipilimumab combination and nivolumab alone versus ipilimumab alone among treatment-naive patients with advanced melanoma based on a minimum 36-month follow-up from the CheckMate 067 trial.

Methods

Overall survival was partitioned into time without symptoms of progression or toxicity (TWiST), time with treatment-related grade ≥ 3 adverse events after randomization but before progression (TOX), and time from progression until end of follow-up or death (REL). Mean quality-adjusted TWiST (Q-TWiST) was calculated by multiplying the mean time spent in each health state by a utility of 1.0 for TWiST and 0.5 for TOX and REL. Sensitivity analyses included varying utilities of TOX and REL; Q-TWiST gains at different follow-up times were calculated using EQ-5D-3L utilities from the trial. Relative Q-TWiST gain of ≥ 10% was considered clinically important.

Results

Compared with ipilimumab-treated patients, those who received nivolumab + ipilimumab combination had significantly longer TWiST and TOX but shorter REL; nivolumab-treated patients had significantly longer TWiST, shorter REL, and shorter but statistically nonsignificant TOX. Mean Q-TWiST was highest for nivolumab + ipilimumab (23.5 months; 95% CI 21.9–25.2), followed by nivolumab (21.8 months; 95% CI 20.2–23.4) and ipilimumab (15.3 months; 95% CI 13.9–16.6). Relative Q-TWiST gains were favorable and clinically important for nivolumab + ipilimumab combination (+ 36.81%) and nivolumab alone (+ 29.18%) versus ipilimumab alone. Relative gains increased with follow-up from 3 to 40 months for all comparisons. These gains remained consistent in magnitude and direction in the different sensitivity analyses.

Conclusions

Nivolumab + ipilimumab combination and nivolumab alone resulted in a statistically significant and clinically important improvement in quality-adjusted survival compared with ipilimumab alone.

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