This study will identify the level of serum Riboneuclease 1 in systemic lupus patients and compare between its level in lupus nephritis and non nephritis.
Adult patients (≥18 years old) with non lupus nephritis SLE diagnosed according to the 2019 EULAR/ACR Classification Criteria for Systemic Lupus Erythematosus .
Adult patients (≥18 years old) with Lupus Nephritis classified according to the 2018 ISN/RPS classification criteria.
Patients less than 18 years old
Patients with other autoimmune diseases
Active infection and malignancy
Pregnancy and lactation