Mutations in PLCE1 are a major cause of isolated diffuse mesangial sclerosis (IDMS)

PLCE1 mutation is the most common cause of IDMS in this cohort. We previously reported that one child with truncating mutation in PLCE1 responded to cyclosporine therapy. If this observation is confirmed in a larger study, mutations in PLCE1 may serve as a biomarker for selecting patients with IDMS who may benefit from treatment.