Case Report: Ankylosing Spondylitis Complicated With Systemic Lupus Erythematosus

Area of Science:

• Rheumatology
• Immunology
• Genetics

Background:

• Ankylosing spondylitis (AS) is a rare condition when found with connective tissue diseases.
• Systemic lupus erythematosus (SLE) is an autoimmune disease that can affect multiple organ systems.
• The coexistence of AS and SLE is exceptionally uncommon in clinical reports.

Observation:

• A 58-year-old male patient presented with a 5-year history of lower spine pain.
• Immunological tests revealed positive antinuclear antibodies (ANA) and anti-Sm antibodies.
• Human leukocyte antigen B27 (HLA-B27) testing was also positive.

Findings:

• The patient was diagnosed with coexisting ankylosing spondylitis and systemic lupus erythematosus.
• The positive HLA-B27 marker is strongly associated with AS.
• Positive ANA and anti-Sm antibodies are characteristic markers for SLE.

Implications:

• This case highlights the importance of considering rare autoimmune disease comorbidities.
• Understanding the interplay between AS and SLE can improve diagnostic approaches.
• Further research into shared genetic or environmental factors may be warranted.