Systemic lupus erythematosus one disease or many?

Area of Science:

• Rheumatology
• Immunology
• Genetics

Background:

• Systemic lupus erythematosus (SLE) presents with diverse clinical features and autoantibodies.
• The heterogeneity of SLE raises questions about its classification as a single disease entity.

Purpose of the Study:

• To debate the clinical, genetic, hormonal, and serological differences and similarities within SLE.
• To propose a revised understanding of SLE as a syndrome rather than a single disease.

Main Methods:

• Review and synthesis of existing clinical, genetic, hormonal, and serological data in SLE.
• Comparative analysis of SLE phenotypes and pathogenic mechanisms.

Main Results:

• Significant clinical and serological heterogeneity exists within SLE.
• Similarities across SLE subtypes suggest a shared underlying syndrome.

Conclusions:

• SLE is best conceptualized as a syndrome, defined by a constellation of signs and symptoms.
• Updated classification and criteria for SLE are needed, informed by gene expression, autoantibodies, and environmental factors.
• This approach may enable targeted therapies and personalized medicine for SLE.