Cross-Over Trial of Febuxostat and Topiroxostat for Hyperuricemia With Cardiovascular Disease (TROFEO Trial)

Akira Sezai, Kazuaki Obata, Keisuke Abe, Sakie Kanno, Hisakuni Sekino
Circulation Journal: Official Journal of the Japanese Circulation Society 2017 October 25, 81 (11): 1707-1712

BACKGROUND: We previously reported that febuxostat was more effective for hyperuricemia than allopurinol. The efficacy, however, of topiroxostat (a novel xanthine oxidase reductase inhibitor similar to febuxostat), for hyperuricemia is unknown.Methods and Results:Patients with cardiovascular disease and hyperuricemia, in whom serum uric acid (s-UA) was controlled at ≤6 mg/dL, were eligible for enrollment. Fifty-five patients were randomized to receive either febuxostat or topiroxostat for 6 months and were switched to the other drug for the following 6 months. The primary endpoint was s-UA. Secondary endpoints included serum creatinine, estimated glomerular filtration rate, urinary albumin, cystatin-C, oxidized low-density lipoprotein, eicosapentaenoic acid/arachidonic acid ratio, lipid biomarkers, high-sensitivity C-reactive protein and B-type natriuretic protein. Although s-UA level was similar for both drugs, significantly more patients required dose escalation during treatment with topiroxostat. There were no differences in renal function, inflammatory and lipid markers between the 2 drugs. A biomarker of oxidative stress was significantly lower after 3 months of febuxostat compared with topiroxostat.

CONCLUSIONS: Febuxostat causes more marked and more rapid reduction of s-UA than topiroxostat. With regard to the antioxidant effect, febuxostat was superior to topiroxostat after 3 months. The renal protective and anti-inflammatory effects of both drugs were also similar after 6 months of treatment. Thus, both of these agents were similarly effective for hyperuricemia in patients with cardiovascular disease.

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