APOL1 and chronic kidney disease: While a previous report of two pediatric cohorts representing children with CKD (CKiD) and nephrotic syndrome (Nephrotic Syndrome Study Network; NEPTUNE) showed similar APOL1 characteristics in terms of FSGS diagnosis and disease progression (15), the association of APOL1 and cardiovascular comorbidities in the presence of CKD has not been explored.