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Prognostic Factors at Diagnosis Associated With Damage Accrual in Childhood-Onset Systemic Lupus Erythematosus
Ana Luisa Rodríguez-Lozano1, Francisco Eduardo Rivas-Larrauri2, Silvestre García-de la Puente3
1Servicio de Inmunología, Instituto Nacional de Pediatría, Ciudad de México, México; Programa de Maestría y Doctorado en Ciencias Médicas, Odontológicas y de la Salud, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, México.
Insights
Neurologic disease, vasculitis, and hemolytic anemia at diagnosis are key predictors of damage in childhood-onset systemic lupus erythematosus (cSLE). Early identification and close monitoring are crucial for better patient outcomes.
Area of Science:
- Pediatric Rheumatology
- Autoimmune Diseases
- Clinical Research
Background:
- Childhood-onset systemic lupus erythematosus (cSLE) is a chronic autoimmune condition with significant long-term morbidity.
- Damage accrual in cSLE can lead to irreversible complications and reduced quality of life.
- Identifying prognostic factors at diagnosis is crucial for early intervention and management.
Purpose of the Study:
- To associate prognostic factors identified at diagnosis with subsequent damage accrual in patients with cSLE.
- To identify specific clinical features that predict long-term damage in pediatric lupus patients.
Main Methods:
- A prospective cohort study was conducted with children (≤16 years) meeting the 1997 American College of Rheumatology (ACR) classification criteria for SLE.
- Disease activity was assessed every 3-6 months using SLEDAI and MEX-SLEDAI scores.
- Damage was measured annually using the Pediatric Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI).
Main Results:
- Ninety cSLE patients (median age 11.8 years) were analyzed, with 53% experiencing SDI ≥ 2.
- Neurologic disease (RR 9.55), vasculitis (RR 2.81), and hemolytic anemia (RR 2.09) at diagnosis were significantly associated with damage accrual.
- The presence of all three factors at diagnosis correlated with a 98.97% probability of developing damage.
Conclusions:
- Neurologic disease, vasculitis, and hemolytic anemia are critical prognostic factors for damage development in cSLE.
- These identified factors necessitate closer patient follow-up to mitigate the risk of long-term damage.
- Early recognition of these indicators can guide proactive management strategies in pediatric lupus patients.
Objectives:
To associate prognostic factors present at diagnosis with damage accrual in childhood-onset systemic lupus erythematosus (cSLE) patients.
Methods:
We designed a cohort study of eligible children age 16 or younger who fulfilled the 1997 American College of Rheumatology (ACR) classification criteria for SLE. Excluded were those with previous treatment of steroids or immunosuppressants. The diagnosis date was cohort entry. We followed up on all subjects prospectively for at least 2 years. Two experts assessed the disease activity with the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) and Mexican-SLEDAI (MEX-SLEDAI) every 3-6 months. Damage was measured annually, applying Pediatric Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI) to their last visit. We analyzed prognostic factors by relative risks (RR) and used logistic regression to construct the clinimetric table.
Results:
Ninety patients with a median age of 11.8 years at diagnosis had a SLEDAI score of 15.5 (2-40) and a MEX-SLEDAI score of 12 (2-29); and of them, forty-eight children (53%) had SDI ≥ 2. The associated variables to damage (SDI ≥ 2) are as follows: neurologic disease RR 9.55 [95% CI 1.411-64.621]; vasculitis RR 2.81 [95% CI 0.991-7.973], and hemolytic anemia RR 2.09 [95% CI 1.280-3.415]. When these three features are present at diagnosis, the probability of damage ascends to 98.97%.
Conclusion:
At diagnosis, we identified neurologic disease, vasculitis, and hemolytic anemia as prognostic factors related to the development of damage in cSLE. Their presence should lead to a closer follow-up to reduce the likelihood of damage development.
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