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Platelet genetic testing by next-generation sequencing: A practical update
1Special Coagulation Laboratory, Division of Hematopathology, Mayo Clinic, Rochester, Minnesota, USA.
Insights
Diagnosing inherited platelet disorders (IPDs) is challenging due to overlapping symptoms. Genetic testing using next-generation sequencing (NGS) is becoming crucial for accurate diagnosis of these bleeding disorders.
Area of Science:
- Hematology
- Genetics
- Molecular Diagnostics
Background:
- Inherited platelet disorders (IPDs) present with variable platelet counts and bleeding tendencies, often with or without other organ involvement.
- Diagnostic challenges arise from non-specific platelet function tests and overlapping clinical/laboratory features.
- Accurate diagnosis of IPDs is essential for appropriate management and genetic counseling.
Purpose of the Study:
- To highlight the diagnostic challenges in inherited platelet disorders.
- To emphasize the growing role of genetic testing in IPD diagnosis.
- To underscore the importance of a comprehensive approach combining clinical, laboratory, and genetic data.
Main Methods:
- Review of current diagnostic approaches for IPDs.
- Discussion of the application of next-generation sequencing (NGS) technologies.
- Emphasis on the necessity of phenotype and genotype correlation studies.
Main Results:
- Next-generation sequencing (NGS) offers a powerful tool for rapid, multi-gene analysis in IPDs.
- NGS facilitates the identification of genetic underpinnings of IPDs, improving diagnostic accuracy.
- Systemic testing and detailed correlation studies are vital for confirming diagnoses.
Conclusions:
- Genetic testing, particularly NGS, is increasingly integral to the investigation of IPDs.
- A combined approach of clinical evaluation, laboratory testing, and genetic analysis is critical for accurate IPD diagnosis.
- Further research and application of genetic technologies will enhance the understanding and management of IPDs.
Abstract:
Inherited platelet disorders (IPDs) are a heterogeneous group of disorders characterized by normal or reduced platelet counts, bleeding diatheses of varying severities, and the presence (syndromic) or absence (non-syndromic) of involvement of other organs. Due to the lack of highly specific platelet function tests and overlapping clinical and laboratory features, diagnosing the underlying cause of IPDs remains challenging. In recent years, genetic testing via next-generation sequencing (NGS) technologies to rapidly analyze multiple genes has gradually emerged as an important part of the laboratory investigation of patients with IPDs. A systemic clinical and laboratory testing approach and thorough phenotype and genotype correlation studies of both patients and their family members are crucial for accurate diagnoses of IPDs.
