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AB0656 Clinical, serological and immunogenetic features of late-onset systemic lupus erythematosus in a colombian population
  1. E.A. Peñaranda-Parada,
  2. U. Panqueva,
  3. W. Rojas,
  4. R. Mantilla,
  5. F. Rondon,
  6. G. Quintana,
  7. A. Iglesias-Gamarra
  1. Rheumatology Unit, National University of Colombia, Bogotá, Colombia


Background Late-onset systemic lupus erythematosus (LOSLE) is a disease-specific subgroup, which begins clinically after 50 years of age. LOSLE may have unusual clinical and laboratory characteristics, which may delay the diagnosis and timely treatment of the disease.

Objectives To determine the clinical, serological and immunogenetic (HLA-DRB1) differences among patients with LOSLE versus SLE starting at younger ages.

Methods Cross-sectional study in a Colombian population of individuals with SLE according to ACR criteria. Clinical and serological variables were analyzed in 98 patients with LOSLE and 72 patients with early-onset lupus. The HLA-DRB1 genotyping was analyzed in 62 samples from patients with LOSLE and 179 samples from patients without autoimmune disease.

Results Table 1 show the statistically significant clinical and laboratory findings between patients LOSLE vs. early-onset SLE. In patients with LOSLE, the HLA DR17 (DR3) was found more frequently compared to individuals without autoimmune disease (OR 3.81 - 95% CI 1.47 to 10.59) (p=0.0016).

Table 1. Frequency of clinical and laboratory findings

Conclusions In the Colombian population with SLE, there is a probable association between various clinical and serological features, which differentiate the beginning of disease among patients with late-onset SLE vs. early-onset SLE.

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Disclosure of Interest None Declared

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