BACKGROUND AND OBJECTIVES: The number of patients with C1q nephropathy (C1qN) in previous reports is small and the duration of follow-up is short. Our study describes the clinicopathologic correlation and clinical outcome through the mean follow-up period of 7.2 yr in 61 patients. DESIGN, SETTINGS, PARTICIPANTS, & MEASUREMENTS: Sixty-one patients, 1 to 67 yr of age, with C1qN were enrolled in this study. RESULTS: According to presentation at onset, patients were divided into two groups: asymptomatic urinary abnormalities (asymptomatic) (n = 36) and nephrotic syndrome (NS) (n = 25). Light microscopy showed minimal change disease (MCD) in 46 patients (75%), mesangial proliferative glomerulonephritis in 7 (12%), and focal segmental glomerulosclerosis (FSGS) in 8 (13%). The prevalence of MCD was higher in the NS group than in the asymptomatic group. Nine patients in the asymptomatic group and all patients in the NS group were treated with prednisolone and/or cyclosporine. Normal urinalysis was found in 10 patients in asymptomatic group and 8 in NS group during the follow-up. Thirteen patients in the NS group were frequent relapsers at the latest follow-up. Three patients with FSGS developed chronic renal failure 8 to 15 yr after the diagnosis. C1q deposits disappeared in 3 of 8 patients receiving repeat biopsy, and 2 of these 3 showed FSGS. CONCLUSIONS: The prognosis of C1qN is good, associated with MCD in a large number. In some patients, C1q deposits disappear through the follow-up period. FSGS may develop in some patients on repeat biopsies. Further investigation is critically needed to settle this issue.
BACKGROUND AND OBJECTIVES: The number of patients with C1qnephropathy (C1qN) in previous reports is small and the duration of follow-up is short. Our study describes the clinicopathologic correlation and clinical outcome through the mean follow-up period of 7.2 yr in 61 patients. DESIGN, SETTINGS, PARTICIPANTS, & MEASUREMENTS: Sixty-one patients, 1 to 67 yr of age, with C1qN were enrolled in this study. RESULTS: According to presentation at onset, patients were divided into two groups: asymptomatic urinary abnormalities (asymptomatic) (n = 36) and nephrotic syndrome (NS) (n = 25). Light microscopy showed minimal change disease (MCD) in 46 patients (75%), mesangial proliferative glomerulonephritis in 7 (12%), and focal segmental glomerulosclerosis (FSGS) in 8 (13%). The prevalence of MCD was higher in the NS group than in the asymptomatic group. Nine patients in the asymptomatic group and all patients in the NS group were treated with prednisolone and/or cyclosporine. Normal urinalysis was found in 10 patients in asymptomatic group and 8 in NS group during the follow-up. Thirteen patients in the NS group were frequent relapsers at the latest follow-up. Three patients with FSGS developed chronic renal failure 8 to 15 yr after the diagnosis. C1q deposits disappeared in 3 of 8 patients receiving repeat biopsy, and 2 of these 3 showed FSGS. CONCLUSIONS: The prognosis of C1qN is good, associated with MCD in a large number. In some patients, C1q deposits disappear through the follow-up period. FSGS may develop in some patients on repeat biopsies. Further investigation is critically needed to settle this issue.
Authors: S Blumenthal; R P Epps; R Heavenrich; R M Lauer; E Lieberman; B Mirkin; S C Mitchell; V Boyar Naito; D O'Hare; W McFate Smith; R C Tarazi; D Upson Journal: Pediatrics Date: 1977-05 Impact factor: 7.124
Authors: Glen S Markowitz; Joshua A Schwimmer; M Barry Stokes; Samih Nasr; Robert L Seigle; Anthony M Valeri; Vivette D D'Agati Journal: Kidney Int Date: 2003-10 Impact factor: 10.612
Authors: Aram V Chobanian; George L Bakris; Henry R Black; William C Cushman; Lee A Green; Joseph L Izzo; Daniel W Jones; Barry J Materson; Suzanne Oparil; Jackson T Wright; Edward J Roccella Journal: JAMA Date: 2003-05-14 Impact factor: 56.272
Authors: Kipyo Kim; Hyung-Eun Son; Ji-Young Ryu; Hajeong Lee; Seung Hyeok Han; Dong-Ryeol Ryu; Jin Ho Paik; Sejoong Kim; Ki Young Na; Dong-Wan Chae; Ho Jun Chin; Se Won Oh Journal: PLoS One Date: 2019-04-19 Impact factor: 3.240