Work

Q-TWiST Analysis of Tivozanib Versus Sorafenib in Patients With Advanced Renal Cell Carcinoma in the TIVO-3 Study

Year: 2021

Type: article

Abstract: BACKGROUND: In TIVO-3, tivozanib increased progression-free survival with no difference in overall survival relative to sorafenib as third- or fourth-line therapy in patients with metastatic renal cell carcinoma. We applied quality-adjusted time without symptoms of disease and toxicity (Q-TWiST) methods to quantify the net health benefits of tivozanib, in the presence of similar survival, when compared with sorafenib. METHODS: The mean Q-TWiST was calculated by applying utility coefficients of 0.5, 1.0, and 0.5 to the 36-month restricted mean health states of time with toxicity (TOX), TWiST, and time after progression/relapse, respectively. The relative Q-TWiST gain was defined as the mean absolute Q-TWiST difference divided by the sorafenib mean overall survival. RESULTS: The mean TWiST was longer for tivozanib than for sorafenib, mean time after progression/relapse was shorter for tivozanib, with no difference in mean TOX. Mean Q-TWiST was 15.04 months and 12.78 months for tivozanib and sorafenib, respectively (P = .0493). The tivozanib relative gain was 11.2%. DISCUSSION: Tivozanib increased Q-TWiST relative to sorafenib, primarily through an increase in TWiST, which is generally considered to be the highest utility state. CONCLUSION: Q-TWiST may be considered an alternative patient-centered measure of benefit of tivozanib in as a third- or fourth-line therapy in patients with renal cell carcinoma. CLINICAL TRIAL INFORMATION: NCT02627963.

Source: Clinical Genitourinary Cancer

DOI: 10.1016/j.clgc.2021.03.018