QN exhibited lower cystatin C levels than those in CN (CN vs QN: 1.48 ± 0.39 vs 0.71 ± 0.26; P = .0015, CN vs CH: 1.48 ± 0.39 vs 0.55 ± 0.33; P = .0002). Here, CST3 is linked to cyclic hematopoiesis.