Background: Systemic lupus erythematosus (SLE) is an autoimmune disorder, multisystemic in nature more common in females of childbearing age. There are certain risk factors which predispose to this disease. It affects various organs, kidney is among them. Almost 60% patients having SLE ultimately leads to kidney dysfunction at some stage of the life.

Aim: To find out pattern of histopathological findings of lupus nephritis as per WHO classification on kidney biopsy in Pakistan.

Methodology: This cross-sectional study was completed in department of Medicine, Fatima Memorial Hospital, Lahore, from March 2016 to May, 2018. Total sample size was 165 patients. Only patients who fulfilled the 2012 SLICC (Systemic Lupus International Collaborating Clinics) criteria were included in the study. SPSS version 25.0 was used data analysis.

Results: Age of the patients was between 31-50 years i.e. 114(69.09%), mean and SD was 43.96±4.84 years, females were more commonly affected by calculating 99(59.70%). Patterns of lupus nephritis as per WHO classification and renal biopsy were noted which shows 18(10.91%) had Class I, 53(32.12%) Class II, 43(26.07%) Class III, 35(21.20%) Class IV, 10(6.06%) Class V and 6(3.64%) had Class VI.

Conclusion: Class II and Class III Lupus Nephritis are the most common modalities found in patients of SLE. Every patient with Lupus Nephritis should undergo a Renal Biopsy for correct diagnosis of the class of this disease and further management accordingly.

Keywords: Lupus Nephritis, SLE, renal biopsy