Riociguat in patients with early diffuse cutaneous systemic sclerosis (RISE-SSc): randomised, double-blind, placebo-controlled multicentre trial.
2020
Objectives Riociguat is approved for pulmonary arterial hypertension and has antiproliferative, anti-inflammatory and antifibrotic effects in animal models of tissue fibrosis. We evaluated the efficacy and safety of riociguat in patients with early diffuse cutaneous systemic sclerosis (dcSSc) at high risk of skin fibrosis progression. Methods In this randomised, double-blind, placebo-controlled, phase IIb trial, adults with dcSSc of Results At week 52, change from baseline in mRSS units was –2.09±5.66 (n=57) with riociguat and –0.77±8.24 (n=52) with placebo (difference of least squares means –2.34 (95% CI –4.99 to 0.30; p=0.08)). In patients with interstitial lung disease, forced vital capacity declined by 2.7% with riociguat and 7.6% with placebo. At week 14, average Raynaud’s condition score had improved ≥50% in 19 (41.3%)/46 patients with riociguat and 13 (26.0%)/50 patients with placebo. Safety assessments showed no new signals with riociguat and no treatment-related deaths. Conclusions Riociguat did not significantly benefit mRSS versus placebo at the predefined p
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