Her eGFR with body surface area (BSA) adjustment was calculated: eGFRcys calculated using CKD-EPI (The Chronic Kidney Disease Epidemiology Collaboration) cystatin C equation, 55 ml/min/1.73 m2 [9]; eGFRcr-cys calculated using the modified CKD-EPI creatinine- cystatin C equation with the coefficient for Japanese (0.908 × CKD-EPIcr-cys) [10], 60 ml/min/1.73 m2; and eGFRcr calculated using the equation for the Japanese population, 62 ml/min/1.73 m2 [11]. This evidence concerns the gene CST3 and chronic kidney disease.