NPPB and chronic kidney disease: Age, comorbid hypertension, haemoglobin, eGFR, cTnT, NTproBNP, %Cres, moderate-to-severe tubulopathy, and administration of glucocorticoids combined with other immunosuppressive therapies are classical prognostic factors for CKD; the results of our univariate Cox analysis also showed these factors to be related to the composite endpoint.