When looking only at patients with SA-AKI, those receiving RRT also had higher levels of cfDNA compared to patients with SA-AKI without RRT, as follows (Figures 7D–F): mt-ND1 (median [IQR]; with RRT 2 273 [973–6 661] vs without RRT 882 [415–2 280], p=0.003), mt-CO3 (with RRT 1 211 [376–4 064] vs without RRT 401 [101–845], p<0.001), n-Rps18 (with RRT 3 939 [1 003–9 494] vs without RRT 1 672 [533–4 646], p=0.036). This evidence concerns the gene MT-CO3 and acute kidney injury.