Figure 2From: Association of decreased mitochondrial DNA content with the progression of colorectal cancer Overall survival. Patients who had a lower mtDNA copy number had poorer three-year survival than patients with a higher mtDNA copy number when assessed by Kaplan–Meier curves, but the difference was not significant (overall survival, 70.0 vs 86.7%, P = 0.082). 0 = low mtDNA copy number group; 1 = high mtDNA copy number group.Back to article page