Phenotype-genotype characterization of 10 families with severe a subunit factor XIII deficiency.

Flora Peyvandi, Liliana Tagliabue, Marzia Menegatti, Mehran Karimi, I. Komáromi, E. Katona, L. Muszbek, Pier Mannuccio Mannucci

Research output: Article

38 Citations (Scopus)

Abstract

Factor XIII (FXIII) deficiency is a very rare severe autosomal bleeding disorder with a frequency of 1:2,000,000 in the general population and only a few patients have been genetically characterized so far. We report a phenotype-genotype characterization of 10 unrelated Iranian patients. Two FXIII (transglutaminase) activity assays showed no FXIII activity, except a conserved residual activity in patients receiving prophylactic substitution treatment. FXIII antigen concentrations measured by two immunoassays were comparable. Genotype characterization identified four novel mutations (2 missense and 2 small deletions) and two previously reported missense mutations in the FXIII A subunit gene (F13A). Molecular modeling was carried out to reveal the structural consequences of the missense mutations, that caused the replacement of an arginine residue involved in the formation of structurally important extensive hydrogen-bonded network. The replacements [c.320G>A (p.Arg77His) in the beta-sandwich, c.868C>T (p.Arg260Cys), c.869G>A (p.Arg260His) and c.1236G>T (p.Arg382Ser) in the core domain] resulted in the loss or impairment of such H-bonded network. Energy decomposition analysis demonstrated that this situation leads to the instability and perhaps to the incorrect folding of the A subunit, that would explain the development of severe FXIII deficiency.

Original languageEnglish
Pages (from-to)98
Number of pages1
JournalHuman Mutation
Volume23
Issue number1
Publication statusPublished - jan. 2004

Fingerprint

Factor XIII Deficiency
Factor XIII
Missense Mutation
Genotype
Phenotype
Transglutaminases
Immunoassay
Arginine
Hydrogen
Hemorrhage
Antigens
Population
Genes

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Peyvandi, F., Tagliabue, L., Menegatti, M., Karimi, M., Komáromi, I., Katona, E., ... Mannucci, P. M. (2004). Phenotype-genotype characterization of 10 families with severe a subunit factor XIII deficiency. Human Mutation, 23(1), 98.

Phenotype-genotype characterization of 10 families with severe a subunit factor XIII deficiency. / Peyvandi, Flora; Tagliabue, Liliana; Menegatti, Marzia; Karimi, Mehran; Komáromi, I.; Katona, E.; Muszbek, L.; Mannucci, Pier Mannuccio.

In: Human Mutation, Vol. 23, No. 1, 01.2004, p. 98.

Research output: Article

Peyvandi, F, Tagliabue, L, Menegatti, M, Karimi, M, Komáromi, I, Katona, E, Muszbek, L & Mannucci, PM 2004, 'Phenotype-genotype characterization of 10 families with severe a subunit factor XIII deficiency.', Human Mutation, vol. 23, no. 1, pp. 98.
Peyvandi, Flora ; Tagliabue, Liliana ; Menegatti, Marzia ; Karimi, Mehran ; Komáromi, I. ; Katona, E. ; Muszbek, L. ; Mannucci, Pier Mannuccio. / Phenotype-genotype characterization of 10 families with severe a subunit factor XIII deficiency. In: Human Mutation. 2004 ; Vol. 23, No. 1. pp. 98.
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