CST3 and chronic kidney disease: We conducted GWAS on six traits: 1) creatinine levels, 2) cystatin C levels, 3) eGFRcre (2009) values, 4) eGFRcre (2021) values, 5) eGFRcys values, and 6) eGFRcrecys values; which were stratified based on eight creatinine levels (individuals in the top 1, 2 and 10 percentiles, and the bottom 1, 10, 90, 98 and 99 percentiles) as well as CKD status (disease, healthy).