Perrone RD, Mouksassi M-S, Romero K, et al. Total kidney volume is a prognostic biomarker of renal function decline and progression to end-stage renal disease in patients with autosomal dominant polycystic kidney disease. Kidney Int Rep. 2017;2:442–450

In the above-mentioned article, the legends for Figures 2 and 3 incorrectly identify the blue and red lines. The red lines represent estimated glomerular filtration rate < 50 ml/min per 1.73 m², and the blue lines represent estimated glomerular filtration rate > 50 ml/min per 1.73 m². The blue and red explanation within the figures themselves is correct.