The impact of taci mutations: From hypogammaglobulinemia in infancy to autoimmunity in adulthood

A. B. Barroeta Seijas, S. Graziani, C. Cancrini, A. Finocchi, S. Ferrari, R. Miniero, F. Conti, R. Zuntini, L. Chini, P. Chiarello, M. Bengala, P. Rossi, Viviana Moschese, G. Di Matteo

Research output: Contribution to journalArticlepeer-review


Common variable immunodeficiency (CVID) is considered the most common symptomatic antibody deficiency and, although mainly reported in adults, it may present from childhood. Few data on the impact of TACI defects on the clinical and immunological status of children are available. We screened 42 hypogammaglobulinemic children to investigate the frequency and mutational features of TACI defects. The genetic, clinical and immunological characterization was extended to 31 relatives of 11 children with TACI mutations. Of interest, our analysis showed a considerably higher mutation frequency in hypogammaglobulinemic children (13/42; 31%) than in other cohorts of adult patients. In seven out of nine families with the C104R variant, the prevalence of autoimmunity was significantly higher in C104R heterozygous relatives (8/15; 53%) than in those with no C104R mutation (1/11; 9%). Our data suggest a different impact of TACI mutations, from hypogammaglobulinemia in children to autoimmune disease in adulthood.

Original languageEnglish
Pages (from-to)407-414
Number of pages8
JournalInternational Journal of Immunopathology and Pharmacology
Issue number2
Publication statusPublished - Apr 2012


  • Autoimmunity
  • Common Variable Immunodeficiency (CVID)
  • Pediatric hypogammaglobulinemia
  • TACI mutations

ASJC Scopus subject areas

  • Pharmacology
  • Immunology
  • Immunology and Allergy

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