Inherited platelet disorders: toward DNA-based diagnosis

Area of Science:

• Genetics
• Hematology
• Molecular Biology

Background:

• Platelet traits are genetically influenced, with numerous loci identified via genome-wide association studies (GWASs).
• Over 30 years, 51 genes linked to inherited platelet disorders (IPDs) have been found, yet most patients remain undiagnosed.
• Accurate molecular diagnosis is crucial for understanding IPD-associated pathologies, including malignancy risks, and guiding patient care.

Purpose of the Study:

• To review inherited platelet disorders, categorizing them by platelet biology and clinical features.
• To discuss challenges in identifying causative genes and variants for IPDs.
• To highlight the evolving diagnostic landscape with high-throughput sequencing and future data integration strategies.

Main Methods:

• Review of existing literature on inherited platelet disorders.
• Analysis of genetic and clinical data, including GWASs and sequencing studies.
• Discussion of integrating multi-omics data (genomic, epigenomic, phenotypic) for novel discoveries.

Main Results:

• Overview of IPDs classified by their impact on platelet function and clinical presentation.
• Identification of 51 genes associated with IPDs, with a significant diagnostic gap remaining.
• Emerging role of high-throughput sequencing in improving diagnostic rates.

Conclusions:

• Despite genetic insights, a molecular diagnosis remains elusive for many IPD patients.
• Future research integrating diverse datasets will enhance understanding and diagnosis of IPDs.
• Improved diagnosis will lead to better patient management and prognosis for inherited platelet disorders.