Heterozygous factor XI deficiency associated with three novel mutations

Area of Science:

• Genetics
• Molecular Biology
• Hematology

Background:

• Factor XI (fXI) deficiency is a rare bleeding disorder.
• Genetic mutations are a primary cause of fXI deficiency.
• Accurate genetic screening is crucial for diagnosis.

Purpose of the Study:

• To evaluate the utility of single-stranded conformation polymorphism (SSCP) analysis for screening mutations in the fXI gene.
• To identify novel mutations in patients with heterozygous factor XI deficiency.

Main Methods:

• Investigated three patients with heterozygous factor XI deficiency.
• Employed DNA sequence analysis to confirm mutations.
• Utilized single-stranded conformation polymorphism (SSCP) analysis for mutation screening.

Main Results:

• Confirmed three novel heterozygous mutations in the fXI gene: Arg308Cys (exon 9), Ala412Val (exon 11), and Ser576Arg (exon 15).
• Postulated structural implications of these missense mutations.
• Demonstrated the effectiveness of genotypic analysis in differentiating deficiency from normal subjects.

Conclusions:

• Single-stranded conformation polymorphism (SSCP) analysis is a valuable tool for screening fXI gene mutations.
• Genotypic analysis provides conclusive differentiation for heterozygous factor XI deficiency.
• Identification of novel mutations contributes to understanding fXI deficiency pathogenesis.