Abstract
Lenvatinib is approved as a first-line treatment for patients with unresectable and/or recurrent hepatocellular carcinoma (HCC). Lenvatinib achieved promising clinical benefits in REFLECT but was associated with clinically significant treatment-emergent hypertension (CSTE-HTN, a grouped term), a common class effect of tyrosine kinase inhibitors. This post hoc analysis assessed the impact of CSTE-HTN on the efficacy and safety of lenvatinib in HCC. Patients from REFLECT who received lenvatinib (n=476) were stratified according to CSTE-HTN. Tumors were assessed by mRECIST. Overall survival (OS) and progression-free survival (PFS) were evaluated using landmark analyses at 4 and 8weeks. A total of 212 patients in the lenvatinib arm developed CSTE-HTN, and 264 did not. CSTE-HTN first occurred at 3.7weeks (median); the worst grade CSTE-HTN occurred at 4.1weeks (median). No patients had life-threatening CSTE-HTN and/or died due to CSTE-HTN. Median OS was numerically longer in patients with versus without CSTE-HTN (at 4weeks: 16.3 vs. 11.6months; hazard ratio [HR], 0.79; 95% confidence interval [CI], 0.621-1.004; at 8weeks: 13.5 vs. 11.6months; HR, 0.87; 95% CI, 0.696-1.089). Median PFS was similar between patients with and without CSTE-HTN (at 4weeks: 6.6 vs. 6.4months; HR, 0.887; 95% CI, 0.680-1.157; at 8weeks: 5.7 vs. 6.4months; HR, 1.09; 95% CI, 0.84-1.41). Objective response rate was numerically higher in patients with (48.6%) versus without CSTE-HTN (34.5%). In this retrospective analysis, CSTE-HTN was associated with improved OS but not PFS. CSTE-HTN did not impair the outcomes of patients with HCC treated with lenvatinib when detected early and managed appropriately.
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