Table 5.

Biopsy follow-up: Histologic and immunofluorescence findings in nine patients with C1q nephropathya

PatientClinical PresentationFirst Renal BiopsySecond/Third Renal BiopsyFollow-up (yr)
Light MicroscopyImmunofluorescence MicroscopyLight MicroscopyImmunofluorescence Microscopy
1NSNo lesionsIgG, IgM, IgA, C1q, C3No lesionsIgG, IgM, C1q, C30.5
2NSNo lesionsIgG, IgM, IgA, C1qNo lesionsIgG, IgM, IgA, C1q0.5
3NSNo lesionsIgG, IgM, IgA, C1q, C3FSGSIgM, C1q, C30.5
4NSFSGSIgG, IgM, IgA, C1q, C3, C4FSGSIgG, IgM, IgA, C1q, C3, C41.0
5NSNo lesionsIgM, C1q, C3Mild mes prolIgG, IgM, IgA, C31.0
6NSNo lesionsIgM, IgA, C3No lesionsIgM, IgA, C1q, C32.0
7NSNo lesionsIgM, C3Mild mes prolIgG, IgM, IgA, C1q, C3, C416.0
8NSNo lesionsIgM, C3No lesionsIgG, IgM, C1q, C313.0
9ARFTu-int nephrIgM, IgA, C3Tu-int nephrIgM, IgA, C1q, C30.5
  • a ARF, acute renal failure; Tu-int nephr, tubulointerstitial nephritis; Mild mes prol, mild mesangial proliferation.