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This study successfully transitioned genotyping for small genes in coagulation and platelet disorders from Sanger sequencing to next-generation sequencing (NGS). The new NGS method accurately detects genetic variants, offering a flexible tool for molecular diagnostics.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Hematology

Background:

  • Molecular testing is crucial for diagnosing congenital coagulation and platelet disorders, guiding genetic counseling, and enabling predictive/prenatal diagnoses.
  • Genotype-phenotype correlations are vital for predicting disease course and tailoring therapy.
  • Sanger sequencing has been the traditional method for genotyping, but next-generation sequencing (NGS) offers parallel analysis of multiple genes.

Purpose of the Study:

  • To develop and validate an NGS-based method for genotyping small genes involved in congenital coagulation and platelet disorders.
  • To replace Sanger sequencing with a more efficient and cost-effective NGS approach for specific gene analyses.

Main Methods:

  • Utilized long-range PCR (LR-PCR) for target enrichment of entire genomic regions of genes: F7, F10, F11, F12, GATA1, MYH9, TUBB1, and WAS.
  • Employed high-throughput sequencing on a MiSeq platform for variant detection.

Main Results:

  • The NGS-based method successfully detected all previously identified variants from Sanger sequencing.
  • The approach demonstrated high accuracy and flexibility for molecular genetic diagnostics of individual small genes.

Conclusions:

  • The developed NGS method is a reliable and adaptable tool for molecular genetic diagnostics of small genes in congenital coagulation and platelet disorders.
  • This approach provides an accurate alternative to Sanger sequencing for specific gene analyses, potentially improving diagnostic efficiency.