Baseline renal biopsy is of paramount value in assessing diagnosis and treatment of lupus nephritis.
The histological class and severity of lupus nephritis cannot be predicted by the clinical features.
Renal biopsy in lupus patients may diagnose other glomerular diseases not directly related to SLE.
Repeat biopsy can recognize histological class transformations and predict long-term outcome.
Repeat renal biopsy are of help in modulating therapy in refractory and relapsing lupus nephritis.