CMV‐associated collapsing focal segmental glomerulosclerosis after kidney transplant in a pediatric patient

Abstract

Collapsing focal segmental glomerulosclerosis (FSGS) is a rare presentation of FSGS and carries a significantly greater risk of progression than classical FSGS. 1 Histologically, it is characterized by segmental or global wrinkling and collapse of glomeruli with hypertrophy and hyperplasia of podocytes. 1 Collapsing FSGS is associated with various etiologies including infectious, such as human immunodeficiency virus (HIV), COVID-19, Epstein-Barr virus (EBV), and cytomegalovirus (CMV), in addition to genetic mutations in the APOL1 gene, malignancies, and ischemic events. 1-4 Among patients who have undergone kidney transplantation, immunosuppression