Familial chilblain lupus--a monogenic form of cutaneous lupus erythematosus due to a heterozygous mutation in TREX1

Dermatology. 2009;219(2):162-6. doi: 10.1159/000222430. Epub 2009 May 28.

Abstract

Chilblain lupus erythematosus is a rare form of cutaneous lupus erythematosus characterized by bluish red infiltrates in acral locations of the body mostly affecting middle-aged women. We recently described a familial form of chilblain lupus manifesting in early childhood caused by a heterozygous mutation in the TREX1 gene, which encodes a 3'-5' DNA exonuclease. Thus, familial chilblain lupus represents the first monogenic form of cutaneous lupus erythematosus. Here we describe the unusual clinical course of this newly defined genodermatosis in an 18-year-old female member of the family in which familial chilblain lupus was originally described.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Aspirin / therapeutic use
  • Biopsy, Needle
  • Chronic Disease
  • Disease Progression
  • Drug Therapy, Combination
  • Exodeoxyribonucleases / genetics*
  • Female
  • Fluorescent Antibody Technique, Direct
  • Follow-Up Studies
  • Gene Expression Regulation
  • Genetic Predisposition to Disease*
  • Humans
  • Hydroxychloroquine / therapeutic use
  • Immunohistochemistry
  • Lupus Erythematosus, Cutaneous / drug therapy
  • Lupus Erythematosus, Cutaneous / genetics*
  • Lupus Erythematosus, Cutaneous / pathology*
  • Mutation
  • Phosphoproteins / genetics*
  • Rare Diseases
  • Risk Assessment
  • Severity of Illness Index
  • Treatment Outcome

Substances

  • Phosphoproteins
  • Hydroxychloroquine
  • Exodeoxyribonucleases
  • three prime repair exonuclease 1
  • Aspirin