The frequency of a common anti-DNA antibody idiotype (16/6) in different populations of patients with systemic lupus erythematosus

R. Bakimer, I. Krause, M. Abu-Shakra, H. Teplizki-Amital, D. A. Isenberg, D. Alarcon-Segovia, G. M. Villareal, Y. Shoenfeld

Research output: Contribution to journalArticlepeer-review

Abstract

The 16/6 anti-DNA idiotype (id) is a pathogenic idiotype first identified on a human hybridoma antibody derived from a patient with systemic lupus erythematosus (SLE). The SA-1 anti-DNA, which antibody was established in a similar fashion from a patient with polymyositis, also carries the 16/6 id, although it has a greater reactivity with dsDNA. The presence of the 16/6 id as defined by anti-16/6 and anti-SA-1 was determined in 3 distinct populations of patients with SLE: 502 Mexicans, 98 English (including Caucasians, West Indians, Chinese, Asians) and 93 Israelis. A similar prevalence (around 20%) of the 2 idiotypes was found, with a significant overlap. The latter finding was supported by a significant correlation noted between the prevalence of the 2 idiotypes (r=0.58 p < 0.001). Despite the fact that 16/6 antibody is most probably encoded by a germline gene, thus being genetically determined, no distinction in the prevalence of the ids could be detected between completely different populations of patients with SLE. This finding may support the independent pathogenic role ascribed to the 16/6 id.

Original languageEnglish
Pages (from-to)1035-1037
Number of pages3
JournalJournal of Rheumatology
Volume18
Issue number7
StatePublished - 1991
Externally publishedYes

Keywords

  • Anti-DNA antibody
  • Autoantibodies
  • Autoimmunity
  • Idiotypes
  • SLE

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