Even though the increased serum MMP‐7 in chronic kidney disease (CKD) patients has proved to be acted as a non‐invasive biomarker of pre‐fibrotic signalling,16 and the urine MMP‐7 was a promising predictor for acute kidney injury severity,13 the distribution and the potential role of MMP‐7 in PD patients are still unknown. Here, MMP7 is linked to chronic kidney disease.