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Area of Science:

  • Genetics
  • Hematology
  • Molecular Biology

Background:

  • Fibrinogen, a key protein in blood coagulation, is a hexameric molecule.
  • Congenital fibrinogen disorders (CFDs) encompass qualitative and quantitative deficiencies.
  • These disorders arise from mutations in the FGA, FGB, and FGG genes.

Purpose of the Study:

  • To update the catalog of causative mutations for congenital fibrinogen disorders.
  • To identify and analyze novel mutations reported since 2016.
  • To provide structure-function insights into fibrinogen domains based on mutation visualization.

Main Methods:

  • Extensive literature search for studies reporting CFD mutations.
  • Compilation and analysis of 120 newly identified mutations.
  • Visualization of single nucleotide variations on FGA, FGB, and FGG coding sequences.

Main Results:

  • 120 additional mutations causing quantitative and qualitative CFDs were identified.
  • Mutations were mapped to the FGA, FGB, and FGG genes.
  • Analysis revealed structure-function implications for fibrinogen domains.

Conclusions:

  • The study expands the known spectrum of mutations associated with CFDs.
  • The findings contribute to understanding genotype-phenotype correlations in fibrinogen disorders.
  • Visualizing mutations provides valuable insights into fibrinogen structure and function.